diff --git a/core/java/android/app/ContextImpl.java b/core/java/android/app/ContextImpl.java
index f32c230..0e473c9 100644
--- a/core/java/android/app/ContextImpl.java
+++ b/core/java/android/app/ContextImpl.java
@@ -1155,7 +1155,7 @@
             if (mUsbManager == null) {
                 IBinder b = ServiceManager.getService(USB_SERVICE);
                 IUsbManager service = IUsbManager.Stub.asInterface(b);
-                mUsbManager = new UsbManager(service);
+                mUsbManager = new UsbManager(this, service);
             }
         }
         return mUsbManager;
diff --git a/core/java/android/hardware/usb/IUsbManager.aidl b/core/java/android/hardware/usb/IUsbManager.aidl
index 9be7e77..ffe557c 100644
--- a/core/java/android/hardware/usb/IUsbManager.aidl
+++ b/core/java/android/hardware/usb/IUsbManager.aidl
@@ -16,6 +16,7 @@
 
 package android.hardware.usb;
 
+import android.app.PendingIntent;
 import android.hardware.usb.UsbAccessory;
 import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
@@ -36,12 +37,22 @@
      */
     void setAccessoryPackage(in UsbAccessory accessory, String packageName);
 
+    /* Returns true if the caller has permission to access the accessory. */
+    boolean hasAccessoryPermission(in UsbAccessory accessory);
+
+    /* Requests permission for the given package to access the accessory.
+     * Will display a system dialog to query the user if permission
+     * had not already been given. Result is returned via pi.
+     */
+    void requestAccessoryPermission(in UsbAccessory accessory, String packageName,
+            in PendingIntent pi);
+
     /* Grants permission for the given UID to access the accessory */
     void grantAccessoryPermission(in UsbAccessory accessory, int uid);
 
     /* Returns true if the USB manager has default preferences or permissions for the package */
-    boolean hasDefaults(String packageName, int uid);
+    boolean hasDefaults(String packageName);
 
     /* Clears default preferences and permissions for the package */
-    oneway void clearDefaults(String packageName, int uid);
+    void clearDefaults(String packageName);
 }
diff --git a/core/java/android/hardware/usb/UsbAccessory.java b/core/java/android/hardware/usb/UsbAccessory.java
index a7e953d..41aed99 100644
--- a/core/java/android/hardware/usb/UsbAccessory.java
+++ b/core/java/android/hardware/usb/UsbAccessory.java
@@ -31,18 +31,21 @@
 
     private final String mManufacturer;
     private final String mModel;
-    private final String mType;
+    private final String mDescription;
     private final String mVersion;
+    private final String mUri;
 
     /**
      * UsbAccessory should only be instantiated by UsbService implementation
      * @hide
      */
-    public UsbAccessory(String manufacturer, String model, String type, String version) {
+    public UsbAccessory(String manufacturer, String model, String description,
+            String version, String uri) {
         mManufacturer = manufacturer;
         mModel = model;
-        mType = type;
+        mDescription = description;
         mVersion = version;
+        mUri = uri;
     }
 
     /**
@@ -52,8 +55,9 @@
     public UsbAccessory(String[] strings) {
         mManufacturer = strings[0];
         mModel = strings[1];
-        mType = strings[2];
+        mDescription = strings[2];
         mVersion = strings[3];
+        mUri = strings[4];
     }
 
     /**
@@ -75,12 +79,12 @@
     }
 
     /**
-     * Returns the type of the accessory.
+     * Returns a user visible description of the accessory.
      *
-     * @return the accessory type
+     * @return the accessory description
      */
-    public String getType() {
-        return mType;
+    public String getDescription() {
+        return mDescription;
     }
 
     /**
@@ -92,6 +96,17 @@
         return mVersion;
     }
 
+    /**
+     * Returns the URI for the accessory.
+     * This is an optional URI that might show information about the accessory
+     * or provide the option to download an application for the accessory
+     *
+     * @return the accessory URI
+     */
+    public String getUri() {
+        return mUri;
+    }
+
     private static boolean compare(String s1, String s2) {
         if (s1 == null) return (s2 == null);
         return s1.equals(s2);
@@ -103,18 +118,29 @@
             UsbAccessory accessory = (UsbAccessory)obj;
             return (compare(mManufacturer, accessory.getManufacturer()) &&
                     compare(mModel, accessory.getModel()) &&
-                    compare(mType, accessory.getType()) &&
-                    compare(mVersion, accessory.getVersion()));
+                    compare(mDescription, accessory.getDescription()) &&
+                    compare(mVersion, accessory.getVersion()) &&
+                    compare(mUri, accessory.getUri()));
         }
         return false;
     }
 
     @Override
+    public int hashCode() {
+        return ((mManufacturer == null ? 0 : mManufacturer.hashCode()) ^
+                (mModel == null ? 0 : mModel.hashCode()) ^
+                (mDescription == null ? 0 : mDescription.hashCode()) ^
+                (mVersion == null ? 0 : mVersion.hashCode()) ^
+                (mUri == null ? 0 : mUri.hashCode()));
+    }
+
+    @Override
     public String toString() {
         return "UsbAccessory[mManufacturer=" + mManufacturer +
                             ", mModel=" + mModel +
-                            ", mType=" + mType +
-                            ", mVersion=" + mVersion + "]";
+                            ", mDescription=" + mDescription +
+                            ", mVersion=" + mVersion +
+                            ", mUri=" + mUri + "]";
     }
 
     public static final Parcelable.Creator<UsbAccessory> CREATOR =
@@ -122,9 +148,10 @@
         public UsbAccessory createFromParcel(Parcel in) {
             String manufacturer = in.readString();
             String model = in.readString();
-            String type = in.readString();
+            String description = in.readString();
             String version = in.readString();
-            return new UsbAccessory(manufacturer, model, type, version);
+            String uri = in.readString();
+            return new UsbAccessory(manufacturer, model, description, version, uri);
         }
 
         public UsbAccessory[] newArray(int size) {
@@ -139,7 +166,8 @@
     public void writeToParcel(Parcel parcel, int flags) {
         parcel.writeString(mManufacturer);
         parcel.writeString(mModel);
-        parcel.writeString(mType);
+        parcel.writeString(mDescription);
         parcel.writeString(mVersion);
+        parcel.writeString(mUri);
    }
 }
diff --git a/core/java/android/hardware/usb/UsbManager.java b/core/java/android/hardware/usb/UsbManager.java
index a350274..ea820f9 100644
--- a/core/java/android/hardware/usb/UsbManager.java
+++ b/core/java/android/hardware/usb/UsbManager.java
@@ -17,6 +17,8 @@
 
 package android.hardware.usb;
 
+import android.app.PendingIntent;
+import android.content.Context;
 import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
@@ -75,7 +77,7 @@
      *
      * This intent is sent when a USB accessory is detached.
      * <ul>
-     * <li> {@link #EXTRA_ACCESSORY} containing the {@link android.hardware.usb.UsbAccessory}
+     * <li> {@link #EXTRA_ACCESSORY} containing the {@link UsbAccessory}
      * for the attached accessory that was detached
      * </ul>
      */
@@ -145,12 +147,22 @@
      */
     public static final String EXTRA_ACCESSORY = "accessory";
 
-    private IUsbManager mService;
+    /**
+     * Name of extra added to the {@link android.app.PendingIntent}
+     * passed into {@link #requestPermission(UsbDevice, PendingIntent)}
+     * or {@link #requestPermission(UsbAccessory, PendingIntent)}
+     * containing a boolean value indicating whether the user granted permission or not.
+     */
+    public static final String EXTRA_PERMISSION_GRANTED = "permission";
+
+    private final Context mContext;
+    private final IUsbManager mService;
 
     /**
      * {@hide}
      */
-    public UsbManager(IUsbManager service) {
+    public UsbManager(Context context, IUsbManager service) {
+        mContext = context;
         mService = service;
     }
 
@@ -169,7 +181,7 @@
                 return new UsbAccessory[] { accessory };
             }
         } catch (RemoteException e) {
-            Log.e(TAG, "RemoteException in getAccessoryList" , e);
+            Log.e(TAG, "RemoteException in getAccessoryList", e);
             return null;
         }
     }
@@ -184,11 +196,55 @@
         try {
             return mService.openAccessory(accessory);
         } catch (RemoteException e) {
-            Log.e(TAG, "RemoteException in openAccessory" , e);
+            Log.e(TAG, "RemoteException in openAccessory", e);
             return null;
         }
     }
 
+    /**
+     * Returns true if the caller has permission to access the accessory.
+     * Permission might have been granted temporarily via
+     * {@link #requestPermission(UsbAccessory, PendingIntent)} or
+     * by the user choosing the caller as the default application for the accessory.
+     *
+     * @param accessory to check permissions for
+     * @return true if caller has permission
+     */
+    public boolean hasPermission(UsbAccessory accessory) {
+        try {
+            return mService.hasAccessoryPermission(accessory);
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException in hasPermission", e);
+            return false;
+        }
+    }
+
+    /**
+     * Requests temporary permission for the given package to access the accessory.
+     * This may result in a system dialog being displayed to the user
+     * if permission had not already been granted.
+     * Success or failure is returned via the {@link android.app.PendingIntent} pi.
+     * If successful, this grants the caller permission to access the accessory only
+     * until the device is disconnected.
+     *
+     * The following extras will be added to pi:
+     * <ul>
+     * <li> {@link #EXTRA_ACCESSORY} containing the accessory passed into this call
+     * <li> {@link #EXTRA_PERMISSION_GRANTED} containing boolean indicating whether
+     * permission was granted by the user
+     * </ul>
+     *
+     * @param accessory to request permissions for
+     * @param pi PendingIntent for returning result
+     */
+    public void requestPermission(UsbAccessory accessory, PendingIntent pi) {
+        try {
+            mService.requestAccessoryPermission(accessory, mContext.getPackageName(), pi);
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException in requestPermission", e);
+        }
+    }
+
     private static File getFunctionEnableFile(String function) {
         return new File("/sys/class/usb_composite/" + function + "/enable");
     }
diff --git a/libs/usb/src/com/android/future/usb/UsbAccessory.java b/libs/usb/src/com/android/future/usb/UsbAccessory.java
index cdd2b73..3d0707f 100644
--- a/libs/usb/src/com/android/future/usb/UsbAccessory.java
+++ b/libs/usb/src/com/android/future/usb/UsbAccessory.java
@@ -23,14 +23,16 @@
 
     private final String mManufacturer;
     private final String mModel;
-    private final String mType;
+    private final String mDescription;
     private final String mVersion;
+    private final String mUri;
 
     /* package */ UsbAccessory(android.hardware.usb.UsbAccessory accessory) {
         mManufacturer = accessory.getManufacturer();
         mModel = accessory.getModel();
-        mType = accessory.getType();
+        mDescription = accessory.getDescription();
         mVersion = accessory.getVersion();
+        mUri = accessory.getUri();
     }
 
     /**
@@ -52,12 +54,12 @@
     }
 
     /**
-     * Returns the type of the accessory.
+     * Returns a user visible description of the accessory.
      *
-     * @return the accessory type
+     * @return the accessory description
      */
-    public String getType() {
-        return mType;
+    public String getDescription() {
+        return mDescription;
     }
 
     /**
@@ -69,6 +71,17 @@
         return mVersion;
     }
 
+    /**
+     * Returns the URI for the accessory.
+     * This is an optional URI that might show information about the accessory
+     * or provide the option to download an application for the accessory
+     *
+     * @return the accessory URI
+     */
+    public String getUri() {
+        return mUri;
+    }
+
     private static boolean compare(String s1, String s2) {
         if (s1 == null) return (s2 == null);
         return s1.equals(s2);
@@ -80,17 +93,28 @@
             UsbAccessory accessory = (UsbAccessory)obj;
             return (compare(mManufacturer, accessory.getManufacturer()) &&
                     compare(mModel, accessory.getModel()) &&
-                    compare(mType, accessory.getType()) &&
-                    compare(mVersion, accessory.getVersion()));
+                    compare(mDescription, accessory.getDescription()) &&
+                    compare(mVersion, accessory.getVersion()) &&
+                    compare(mUri, accessory.getUri()));
         }
         return false;
     }
 
     @Override
+    public int hashCode() {
+        return ((mManufacturer == null ? 0 : mManufacturer.hashCode()) ^
+                (mModel == null ? 0 : mModel.hashCode()) ^
+                (mDescription == null ? 0 : mDescription.hashCode()) ^
+                (mVersion == null ? 0 : mVersion.hashCode()) ^
+                (mUri == null ? 0 : mUri.hashCode()));
+    }
+
+    @Override
     public String toString() {
         return "UsbAccessory[mManufacturer=" + mManufacturer +
                             ", mModel=" + mModel +
-                            ", mType=" + mType +
-                            ", mVersion=" + mVersion + "]";
+                            ", mDescription=" + mDescription +
+                            ", mVersion=" + mVersion +
+                            ", mUri=" + mUri + "]";
     }
 }
diff --git a/libs/usb/src/com/android/future/usb/UsbManager.java b/libs/usb/src/com/android/future/usb/UsbManager.java
index f74b291..840e1e3 100644
--- a/libs/usb/src/com/android/future/usb/UsbManager.java
+++ b/libs/usb/src/com/android/future/usb/UsbManager.java
@@ -17,6 +17,7 @@
 
 package com.android.future.usb;
 
+import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.hardware.usb.IUsbManager;
@@ -55,28 +56,39 @@
     public static final String ACTION_USB_ACCESSORY_DETACHED =
             "android.hardware.usb.action.USB_ACCESSORY_DETACHED";
 
+    /**
+     * Name of extra added to the {@link android.app.PendingIntent}
+     * passed into {#requestPermission} or {#requestPermission}
+     * containing a boolean value indicating whether the user granted permission or not.
+     */
+    public static final String EXTRA_PERMISSION_GRANTED = "permission";
+
+    private final Context mContext;
     private final IUsbManager mService;
 
-    private UsbManager(IUsbManager service) {
+    private UsbManager(Context context, IUsbManager service) {
+        mContext = context;
         mService = service;
     }
 
     /**
      * Returns a new instance of this class.
      *
+     * @param context the caller's {@link android.content.Context}
      * @return UsbManager instance.
      */
-    public static UsbManager getInstance() {
+    public static UsbManager getInstance(Context context) {
         IBinder b = ServiceManager.getService(Context.USB_SERVICE);
-        return new UsbManager(IUsbManager.Stub.asInterface(b));
+        return new UsbManager(context, IUsbManager.Stub.asInterface(b));
     }
 
     /**
      * Returns the {@link com.google.android.usb.UsbAccessory} for
      * a {@link #ACTION_USB_ACCESSORY_ATTACHED} or {@link #ACTION_USB_ACCESSORY_ATTACHED}
-     * broadcast Intent
+     * broadcast Intent. This can also be used to retrieve the accessory from the result
+     * of a call to {#requestPermission}.
      *
-     * @return UsbAccessory for the broadcast.
+     * @return UsbAccessory for the intent.
      */
     public static UsbAccessory getAccessory(Intent intent) {
         android.hardware.usb.UsbAccessory accessory =
@@ -118,10 +130,54 @@
         try {
             return mService.openAccessory(new android.hardware.usb.UsbAccessory(
                     accessory.getManufacturer(),accessory.getModel(),
-                    accessory.getType(), accessory.getVersion()));
+                    accessory.getDescription(), accessory.getVersion(), accessory.getUri()));
         } catch (RemoteException e) {
             Log.e(TAG, "RemoteException in openAccessory" , e);
             return null;
         }
     }
+
+    /**
+     * Returns true if the caller has permission to access the accessory.
+     * Permission might have been granted temporarily via
+     * {@link #requestPermission(android.hardware.usb.UsbAccessory} or
+     * by the user choosing the caller as the default application for the accessory.
+     *
+     * @param accessory to check permissions for
+     * @return true if caller has permission
+     */
+    public boolean hasPermission(UsbAccessory accessory) {
+        try {
+            return mService.hasAccessoryPermission(new android.hardware.usb.UsbAccessory(
+                    accessory.getManufacturer(),accessory.getModel(),
+                    accessory.getDescription(), accessory.getVersion(), accessory.getUri()));
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException in hasPermission", e);
+            return false;
+        }
+    }
+
+    /**
+     * Requests temporary permission for the given package to access the accessory.
+     * This may result in a system dialog being displayed to the user
+     * if permission had not already been granted.
+     * Success or failure is returned via the {@link android.app.PendingIntent} pi.
+     * The boolean extra {@link #EXTRA_PERMISSION_GRANTED} will be attached to the
+     * PendingIntent to indicate success or failure.
+     * If successful, this grants the caller permission to access the device only
+     * until the device is disconnected.
+     *
+     * @param accessory to request permissions for
+     * @param pi PendingIntent for returning result
+     */
+    public void requestPermission(UsbAccessory accessory, PendingIntent pi) {
+        try {
+            mService.requestAccessoryPermission(new android.hardware.usb.UsbAccessory(
+                    accessory.getManufacturer(),accessory.getModel(),
+                    accessory.getDescription(), accessory.getVersion(), accessory.getUri()),
+                    mContext.getPackageName(), pi);
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException in requestPermission", e);
+        }
+    }
 }
diff --git a/libs/usb/tests/AccessoryChat/accessorychat/accessorychat.c b/libs/usb/tests/AccessoryChat/accessorychat/accessorychat.c
index 94cc0ce..3c0de69 100644
--- a/libs/usb/tests/AccessoryChat/accessorychat/accessorychat.c
+++ b/libs/usb/tests/AccessoryChat/accessorychat/accessorychat.c
@@ -133,10 +133,19 @@
         } else {
             printf("Found possible android device - attempting to switch to accessory mode\n");
 
+            uint16_t protocol;
+            ret = usb_device_control_transfer(device, USB_DIR_IN | USB_TYPE_VENDOR,
+                    ACCESSORY_GET_PROTOCOL, 0, 0, &protocol, sizeof(protocol), 0);
+            if (ret == 2)
+                printf("device supports protocol version %d\n", protocol);
+            else
+                fprintf(stderr, "failed to read protocol version\n");
+
             send_string(device, ACCESSORY_STRING_MANUFACTURER, "Google, Inc.");
             send_string(device, ACCESSORY_STRING_MODEL, "AccessoryChat");
-            send_string(device, ACCESSORY_STRING_TYPE, "Sample Program");
+            send_string(device, ACCESSORY_STRING_DESCRIPTION, "Sample Program");
             send_string(device, ACCESSORY_STRING_VERSION, "1.0");
+            send_string(device, ACCESSORY_STRING_URI, "http://www.android.com");
 
             ret = usb_device_control_transfer(device, USB_DIR_OUT | USB_TYPE_VENDOR,
                     ACCESSORY_START, 0, 0, 0, 0, 0);
diff --git a/libs/usb/tests/AccessoryChat/src/com/android/accessorychat/AccessoryChat.java b/libs/usb/tests/AccessoryChat/src/com/android/accessorychat/AccessoryChat.java
index 5cf02c7..f9a5bf4 100644
--- a/libs/usb/tests/AccessoryChat/src/com/android/accessorychat/AccessoryChat.java
+++ b/libs/usb/tests/AccessoryChat/src/com/android/accessorychat/AccessoryChat.java
@@ -17,9 +17,11 @@
 package com.android.accessorychat;
 
 import android.app.Activity;
+import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
@@ -42,18 +44,47 @@
 public class AccessoryChat extends Activity implements Runnable, TextView.OnEditorActionListener {
 
     private static final String TAG = "AccessoryChat";
-    TextView mLog;
-    EditText mEditText;
-    ParcelFileDescriptor mFileDescriptor;
-    FileInputStream mInputStream;
-    FileOutputStream mOutputStream;
+
+    private static final String ACTION_USB_PERMISSION =
+            "com.android.accessorychat.action.USB_PERMISSION";
+
+    private TextView mLog;
+    private EditText mEditText;
+    private ParcelFileDescriptor mFileDescriptor;
+    private FileInputStream mInputStream;
+    private FileOutputStream mOutputStream;
+    private UsbManager mUsbManager;
+    private PendingIntent mPermissionIntent;
+    private boolean mPermissionRequestPending;
 
     private static final int MESSAGE_LOG = 1;
 
+   private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (ACTION_USB_PERMISSION.equals(intent.getAction())) {
+                synchronized (this) {
+                    UsbAccessory accessory = UsbManager.getAccessory(intent);
+                    if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
+                        openAccessory(accessory);
+                    } else {
+                        Log.d(TAG, "permission denied for accessory " + accessory);
+                    }
+                    mPermissionRequestPending = false;
+                }
+            }
+        }
+    };
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        mUsbManager = UsbManager.getInstance(this);
+        mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0);
+        IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
+        registerReceiver(mUsbReceiver, filter);
+
         setContentView(R.layout.accessory_chat);
         mLog = (TextView)findViewById(R.id.log);
         mEditText = (EditText)findViewById(R.id.message);
@@ -66,21 +97,20 @@
 
         Intent intent = getIntent();
         Log.d(TAG, "intent: " + intent);
-        UsbManager manager = UsbManager.getInstance();
-        UsbAccessory[] accessories = manager.getAccessoryList();
+        UsbAccessory[] accessories = mUsbManager.getAccessoryList();
         UsbAccessory accessory = (accessories == null ? null : accessories[0]);
         if (accessory != null) {
-            mFileDescriptor = manager.openAccessory(accessory);
-            if (mFileDescriptor != null) {
-                FileDescriptor fd = mFileDescriptor.getFileDescriptor();
-                mInputStream = new FileInputStream(fd);
-                mOutputStream = new FileOutputStream(fd);
-                Thread thread = new Thread(null, this, "AccessoryChat");
-                thread.start();
+            if (mUsbManager.hasPermission(accessory)) {
+                openAccessory(accessory);
             } else {
-                Log.d(TAG, "openAccessory fail");
+                synchronized (mUsbReceiver) {
+                    if (!mPermissionRequestPending) {
+                        mUsbManager.requestPermission(accessory, mPermissionIntent);
+                        mPermissionRequestPending = true;
+                    }
+                }
             }
-        } else {
+         } else {
             Log.d(TAG, "mAccessory is null");
         }
     }
@@ -100,9 +130,24 @@
 
     @Override
     public void onDestroy() {
+        unregisterReceiver(mUsbReceiver);
        super.onDestroy();
     }
 
+    private void openAccessory(UsbAccessory accessory) {
+       mFileDescriptor = mUsbManager.openAccessory(accessory);
+        if (mFileDescriptor != null) {
+            FileDescriptor fd = mFileDescriptor.getFileDescriptor();
+            mInputStream = new FileInputStream(fd);
+            mOutputStream = new FileOutputStream(fd);
+            Thread thread = new Thread(null, this, "AccessoryChat");
+            thread.start();
+            Log.d(TAG, "openAccessory succeeded");
+        } else {
+            Log.d(TAG, "openAccessory fail");
+        }
+    }
+
     public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
         if (actionId == EditorInfo.IME_ACTION_DONE && mOutputStream != null) {
             try {
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 7995869..571729b 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -5,6 +5,7 @@
         >
 
     <uses-permission android:name="android.permission.STATUS_BAR_SERVICE" />
+    <uses-permission android:name="android.permission.MANAGE_USB" />
 
     <application
         android:persistent="true"
@@ -25,5 +26,31 @@
                 android:excludeFromRecents="true">
         </activity>
 
+        <!-- started from UsbDeviceSettingsManager -->
+        <activity android:name=".usb.UsbPermissionActivity"
+            android:exported="true"
+            android:permission="android.permission.MANAGE_USB"
+            android:theme="@*android:style/Theme.Dialog.Alert"
+            android:finishOnCloseSystemDialogs="true"
+            android:excludeFromRecents="true">
+        </activity>
+
+        <!-- started from UsbDeviceSettingsManager -->
+        <activity android:name=".usb.UsbResolverActivity"
+            android:exported="true"
+            android:permission="android.permission.MANAGE_USB"
+            android:theme="@*android:style/Theme.Dialog.Alert"
+            android:finishOnCloseSystemDialogs="true"
+            android:excludeFromRecents="true">
+        </activity>
+
+        <!-- started from UsbDeviceSettingsManager -->
+        <activity android:name=".usb.UsbAccessoryUriActivity"
+            android:exported="true"
+            android:permission="android.permission.MANAGE_USB"
+            android:theme="@*android:style/Theme.Dialog.Alert"
+            android:finishOnCloseSystemDialogs="true"
+            android:excludeFromRecents="true">
+        </activity>
     </application>
 </manifest>
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index ba3a3d1..3e548a2 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -51,4 +51,19 @@
          power usage activity to find out what drained the battery. -->
     <string name="battery_low_why">Battery use</string>
 
+    <!-- Prompt for the USB accessory permission dialog [CHAR LIMIT=80] -->
+    <string name="usb_accessory_permission_prompt">Allow the application %1$s to access the USB accessory?</string>
+
+    <!-- Prompt for the USB accessory URI dialog [CHAR LIMIT=80] -->
+    <string name="usb_accessory_uri_prompt">Additional information for this device may be found at: %1$s</string>
+
+    <!-- Title for USB accessory dialog.  Used when the name of the accessory cannot be determined.  [CHAR LIMIT=50] -->
+    <string name="title_usb_accessory">USB accessory</string>
+
+    <!-- View button label for USB dialogs.  [CHAR LIMIT=15] -->
+    <string name="label_view">View</string>
+
+    <!-- Ignore button label for USB dialogs.  [CHAR LIMIT=15] -->
+    <string name="label_ignore">Ignore</string>
+
 </resources>
diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbAccessoryUriActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbAccessoryUriActivity.java
new file mode 100644
index 0000000..eefb1c6
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbAccessoryUriActivity.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.usb;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.net.Uri;
+import android.hardware.usb.UsbAccessory;
+import android.hardware.usb.UsbManager;
+import android.os.Bundle;
+import android.util.Log;
+
+import com.android.internal.app.AlertActivity;
+import com.android.internal.app.AlertController;
+
+import com.android.systemui.R;
+
+/**
+ * If the attached USB accessory has a URL associated with it, and that URL is valid,
+ * show this dialog to the user to allow them to optionally visit that URL for more
+ * information or software downloads.
+ * Otherwise (no valid URL) this activity does nothing at all, finishing immediately.
+ */
+public class UsbAccessoryUriActivity extends AlertActivity
+        implements DialogInterface.OnClickListener {
+
+    private static final String TAG = "UsbAccessoryUriActivity";
+
+    private UsbAccessory mAccessory;
+    private Uri mUri;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+       super.onCreate(icicle);
+
+       Intent intent = getIntent();
+        mAccessory = (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
+        String uriString = intent.getStringExtra("uri");
+        mUri = (uriString == null ? null : Uri.parse(uriString));
+
+        // sanity check before displaying dialog
+        if (mUri == null) {
+            Log.e(TAG, "could not parse Uri " + uriString);
+            finish();
+            return;
+        }
+        String scheme = mUri.getScheme();
+        if (!"http".equals(scheme) && !"https".equals(scheme)) {
+            Log.e(TAG, "Uri not http or https: " + mUri);
+            finish();
+            return;
+        }
+
+        final AlertController.AlertParams ap = mAlertParams;
+        ap.mTitle = mAccessory.getDescription();
+        if (ap.mTitle == null || ap.mTitle.length() == 0) {
+            ap.mTitle = getString(R.string.title_usb_accessory);
+        }
+        ap.mMessage = getString(R.string.usb_accessory_uri_prompt, mUri);
+        ap.mPositiveButtonText = getString(R.string.label_view);
+        ap.mNegativeButtonText = getString(R.string.label_ignore);
+        ap.mPositiveButtonListener = this;
+        ap.mNegativeButtonListener = this;
+
+        setupAlert();
+    }
+
+    public void onClick(DialogInterface dialog, int which) {
+        if (which == AlertDialog.BUTTON_POSITIVE) {
+            // launch the browser
+            Intent intent = new Intent(Intent.ACTION_VIEW, mUri);
+            intent.addCategory(Intent.CATEGORY_BROWSABLE);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            try {
+                startActivity(intent);
+            } catch (ActivityNotFoundException e) {
+                Log.e(TAG, "startActivity failed for " + mUri);
+            }
+        }
+        finish();
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbDisconnectedReceiver.java b/packages/SystemUI/src/com/android/systemui/usb/UsbDisconnectedReceiver.java
new file mode 100644
index 0000000..4fa3ad0
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbDisconnectedReceiver.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.usb;
+
+import android.app.Activity;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.hardware.usb.UsbAccessory;
+import android.hardware.usb.UsbManager;
+
+// This class is used to close UsbPermissionsActivity and UsbResolverActivity
+// if their accessory is disconnected while the dialog is still open
+class UsbDisconnectedReceiver extends BroadcastReceiver {
+    private final Activity mActivity;
+    private UsbAccessory mAccessory;
+
+    public UsbDisconnectedReceiver(Activity activity, UsbAccessory accessory) {
+        mActivity = activity;
+        mAccessory = accessory;
+
+        IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
+        activity.registerReceiver(this, filter);
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        String action = intent.getAction();
+        if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
+            UsbAccessory accessory =
+                    (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
+            if (accessory != null && accessory.equals(mAccessory)) {
+                mActivity.finish();
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbPermissionActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbPermissionActivity.java
new file mode 100644
index 0000000..c017676
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbPermissionActivity.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.usb;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.hardware.usb.IUsbManager;
+import android.hardware.usb.UsbAccessory;
+import android.hardware.usb.UsbManager;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.TextView;
+
+import com.android.internal.app.AlertActivity;
+import com.android.internal.app.AlertController;
+
+import com.android.systemui.R;
+
+public class UsbPermissionActivity extends AlertActivity
+        implements DialogInterface.OnClickListener, CheckBox.OnCheckedChangeListener {
+
+    private static final String TAG = "UsbPermissionActivity";
+
+    private CheckBox mAlwaysCheck;
+    private TextView mClearDefaultHint;
+    private UsbAccessory mAccessory;
+    private PendingIntent mPendingIntent;
+    private String mPackageName;
+    private int mUid;
+    private boolean mPermissionGranted;
+    private UsbDisconnectedReceiver mDisconnectedReceiver;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+
+        Intent intent = getIntent();
+        mAccessory = (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
+        mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mAccessory);
+        mPendingIntent = (PendingIntent)intent.getParcelableExtra(Intent.EXTRA_INTENT);
+        mUid = intent.getIntExtra("uid", 0);
+        mPackageName = intent.getStringExtra("package");
+
+        PackageManager packageManager = getPackageManager();
+        ApplicationInfo aInfo;
+        try {
+            aInfo = packageManager.getApplicationInfo(mPackageName, 0);
+        } catch (PackageManager.NameNotFoundException e) {
+            Log.e(TAG, "unable to look up package name", e);
+            finish();
+            return;
+        }
+        String appName = aInfo.loadLabel(packageManager).toString();
+
+        final AlertController.AlertParams ap = mAlertParams;
+        ap.mIcon = aInfo.loadIcon(packageManager);
+        ap.mTitle = appName;
+        ap.mMessage = getString(R.string.usb_accessory_permission_prompt, appName);
+        ap.mPositiveButtonText = getString(com.android.internal.R.string.ok);
+        ap.mNegativeButtonText = getString(com.android.internal.R.string.cancel);
+        ap.mPositiveButtonListener = this;
+        ap.mNegativeButtonListener = this;
+
+        // add "always use" checkbox
+        LayoutInflater inflater = (LayoutInflater)getSystemService(
+                Context.LAYOUT_INFLATER_SERVICE);
+        ap.mView = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null);
+        mAlwaysCheck = (CheckBox)ap.mView.findViewById(com.android.internal.R.id.alwaysUse);
+        mAlwaysCheck.setText(com.android.internal.R.string.alwaysUse);
+        mAlwaysCheck.setOnCheckedChangeListener(this);
+        mClearDefaultHint = (TextView)ap.mView.findViewById(
+                                                    com.android.internal.R.id.clearDefaultHint);
+        mClearDefaultHint.setVisibility(View.GONE);
+
+        setupAlert();
+
+    }
+
+    @Override
+    public void onDestroy() {
+        IBinder b = ServiceManager.getService(USB_SERVICE);
+        IUsbManager service = IUsbManager.Stub.asInterface(b);
+
+        // send response via pending intent
+        Intent intent = new Intent();
+        try {
+            if (mAccessory != null) {
+                intent.putExtra(UsbManager.EXTRA_ACCESSORY, mAccessory);
+                if (mPermissionGranted) {
+                    service.grantAccessoryPermission(mAccessory, mUid);
+                    if (mAlwaysCheck.isChecked()) {
+                        service.setAccessoryPackage(mAccessory, mPackageName);
+                    }
+                }
+            }
+            intent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, mPermissionGranted);
+            mPendingIntent.send(this, 0, intent);
+        } catch (PendingIntent.CanceledException e) {
+            Log.w(TAG, "PendingIntent was cancelled");
+        } catch (RemoteException e) {
+            Log.e(TAG, "IUsbService connection failed", e);
+        }
+
+        if (mDisconnectedReceiver != null) {
+            unregisterReceiver(mDisconnectedReceiver);
+        }
+        super.onDestroy();
+    }
+
+    public void onClick(DialogInterface dialog, int which) {
+        if (which == AlertDialog.BUTTON_POSITIVE) {
+            mPermissionGranted = true;
+        }
+        finish();
+    }
+
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        if (mClearDefaultHint == null) return;
+
+        if(isChecked) {
+            mClearDefaultHint.setVisibility(View.VISIBLE);
+        } else {
+            mClearDefaultHint.setVisibility(View.GONE);
+        }
+    }
+}
diff --git a/services/java/com/android/server/usb/UsbResolverActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbResolverActivity.java
similarity index 75%
rename from services/java/com/android/server/usb/UsbResolverActivity.java
rename to packages/SystemUI/src/com/android/systemui/usb/UsbResolverActivity.java
index 02669fd..2de56e5 100644
--- a/services/java/com/android/server/usb/UsbResolverActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbResolverActivity.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.server.usb;
+package com.android.systemui.usb;
 
 import com.android.internal.app.ResolverActivity;
 
@@ -38,6 +38,9 @@
     public static final String TAG = "UsbResolverActivity";
     public static final String EXTRA_RESOLVE_INFOS = "rlist";
 
+    private UsbAccessory mAccessory;
+    private UsbDisconnectedReceiver mDisconnectedReceiver;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         Intent intent = getIntent();
@@ -49,7 +52,6 @@
         }
         Intent target = (Intent)targetParcelable;
         ArrayList<ResolveInfo> rList = intent.getParcelableArrayListExtra(EXTRA_RESOLVE_INFOS);
-        Log.d(TAG, "rList.size() " + rList.size());
         CharSequence title = getResources().getText(com.android.internal.R.string.chooseUsbActivity);
         super.onCreate(savedInstanceState, target, title, null, rList,
                 true, /* Set alwaysUseOption to true to enable "always use this app" checkbox. */
@@ -57,6 +59,22 @@
                          This is necessary because this activity is needed for the user to allow
                          the application permission to access the device */
                 );
+
+        mAccessory = (UsbAccessory)target.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
+        if (mAccessory == null) {
+            Log.e(TAG, "accessory is null");
+            finish();
+            return;
+        }
+        mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mAccessory);
+    }
+
+    @Override
+    protected void onDestroy() {
+        if (mDisconnectedReceiver != null) {
+            unregisterReceiver(mDisconnectedReceiver);
+        }
+        super.onDestroy();
     }
 
     protected void onIntentSelected(ResolveInfo ri, Intent intent, boolean alwaysCheck) {
@@ -64,19 +82,14 @@
             IBinder b = ServiceManager.getService(USB_SERVICE);
             IUsbManager service = IUsbManager.Stub.asInterface(b);
             int uid = ri.activityInfo.applicationInfo.uid;
-            String action = intent.getAction();
 
-            if (UsbManager.ACTION_USB_ACCESSORY_ATTACHED.equals(action)) {
-                UsbAccessory accessory = (UsbAccessory)intent.getParcelableExtra(
-                        UsbManager.EXTRA_ACCESSORY);
-                // grant permission for the accessory
-                service.grantAccessoryPermission(accessory, uid);
-                // set or clear default setting
-                if (alwaysCheck) {
-                    service.setAccessoryPackage(accessory, ri.activityInfo.packageName);
-                } else {
-                    service.setAccessoryPackage(accessory, null);
-                }
+            // grant permission for the accessory
+            service.grantAccessoryPermission(mAccessory, uid);
+            // set or clear default setting
+            if (alwaysCheck) {
+                service.setAccessoryPackage(mAccessory, ri.activityInfo.packageName);
+            } else {
+                service.setAccessoryPackage(mAccessory, null);
             }
 
             try {
diff --git a/services/java/com/android/server/usb/UsbDeviceSettingsManager.java b/services/java/com/android/server/usb/UsbDeviceSettingsManager.java
index 0cb788e..8f6de2f 100644
--- a/services/java/com/android/server/usb/UsbDeviceSettingsManager.java
+++ b/services/java/com/android/server/usb/UsbDeviceSettingsManager.java
@@ -16,11 +16,14 @@
 
 package com.android.server.usb;
 
+import android.app.PendingIntent;
 import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
@@ -31,7 +34,7 @@
 import android.os.FileUtils;
 import android.os.Process;
 import android.util.Log;
-import android.util.SparseArray;
+import android.util.SparseBooleanArray;
 import android.util.Xml;
 
 import com.android.internal.content.PackageMonitor;
@@ -60,10 +63,11 @@
     private static final File sSettingsFile = new File("/data/system/usb_device_manager.xml");
 
     private final Context mContext;
+    private final PackageManager mPackageManager;
 
-    // maps UID to user approved USB accessories
-    private final SparseArray<ArrayList<AccessoryFilter>> mAccessoryPermissionMap =
-            new SparseArray<ArrayList<AccessoryFilter>>();
+    // Temporary mapping UsbAccessory to list of UIDs with permissions for the accessory
+    private final HashMap<UsbAccessory, SparseBooleanArray> mAccessoryPermissionMap =
+            new HashMap<UsbAccessory, SparseBooleanArray>();
     // Maps AccessoryFilter to user preferred application package
     private final HashMap<AccessoryFilter, String> mAccessoryPreferenceMap =
             new HashMap<AccessoryFilter, String>();
@@ -79,22 +83,18 @@
         public final String mManufacturer;
         // USB accessory model (or null for unspecified)
         public final String mModel;
-        // USB accessory type (or null for unspecified)
-        public final String mType;
         // USB accessory version (or null for unspecified)
         public final String mVersion;
 
-        public AccessoryFilter(String manufacturer, String model, String type, String version) {
+        public AccessoryFilter(String manufacturer, String model, String version) {
             mManufacturer = manufacturer;
             mModel = model;
-            mType = type;
             mVersion = version;
         }
 
         public AccessoryFilter(UsbAccessory accessory) {
             mManufacturer = accessory.getManufacturer();
             mModel = accessory.getModel();
-            mType = accessory.getType();
             mVersion = accessory.getVersion();
         }
 
@@ -102,7 +102,6 @@
                 throws XmlPullParserException, IOException {
             String manufacturer = null;
             String model = null;
-            String type = null;
             String version = null;
 
             int count = parser.getAttributeCount();
@@ -114,13 +113,11 @@
                     manufacturer = value;
                 } else if ("model".equals(name)) {
                     model = value;
-                } else if ("type".equals(name)) {
-                    type = value;
                 } else if ("version".equals(name)) {
                     version = value;
                 }
              }
-             return new AccessoryFilter(manufacturer, model, type, version);
+             return new AccessoryFilter(manufacturer, model, version);
         }
 
         public void write(XmlSerializer serializer)throws IOException {
@@ -131,9 +128,6 @@
             if (mModel != null) {
                 serializer.attribute(null, "model", mModel);
             }
-            if (mType != null) {
-                serializer.attribute(null, "type", mType);
-            }
             if (mVersion != null) {
                 serializer.attribute(null, "version", mVersion);
             }
@@ -143,29 +137,33 @@
         public boolean matches(UsbAccessory acc) {
             if (mManufacturer != null && !acc.getManufacturer().equals(mManufacturer)) return false;
             if (mModel != null && !acc.getModel().equals(mModel)) return false;
-            if (mType != null && !acc.getType().equals(mType)) return false;
             if (mVersion != null && !acc.getVersion().equals(mVersion)) return false;
             return true;
         }
 
+        public boolean matches(AccessoryFilter f) {
+            if (mManufacturer != null && !f.mManufacturer.equals(mManufacturer)) return false;
+            if (mModel != null && !f.mModel.equals(mModel)) return false;
+            if (mVersion != null && !f.mVersion.equals(mVersion)) return false;
+            return true;
+        }
+
         @Override
         public boolean equals(Object obj) {
             // can't compare if we have wildcard strings
-            if (mManufacturer == null || mModel == null || mType == null || mVersion == null) {
+            if (mManufacturer == null || mModel == null || mVersion == null) {
                 return false;
             }
             if (obj instanceof AccessoryFilter) {
                 AccessoryFilter filter = (AccessoryFilter)obj;
                 return (mManufacturer.equals(filter.mManufacturer) &&
                         mModel.equals(filter.mModel) &&
-                        mType.equals(filter.mType) &&
                         mVersion.equals(filter.mVersion));
             }
             if (obj instanceof UsbAccessory) {
                 UsbAccessory accessory = (UsbAccessory)obj;
                 return (mManufacturer.equals(accessory.getManufacturer()) &&
                         mModel.equals(accessory.getModel()) &&
-                        mType.equals(accessory.getType()) &&
                         mVersion.equals(accessory.getVersion()));
             }
             return false;
@@ -175,7 +173,6 @@
         public int hashCode() {
             return ((mManufacturer == null ? 0 : mManufacturer.hashCode()) ^
                     (mModel == null ? 0 : mModel.hashCode()) ^
-                    (mType == null ? 0 : mType.hashCode()) ^
                     (mVersion == null ? 0 : mVersion.hashCode()));
         }
 
@@ -183,59 +180,35 @@
         public String toString() {
             return "AccessoryFilter[mManufacturer=\"" + mManufacturer +
                                 "\", mModel=\"" + mModel +
-                                "\", mType=\"" + mType +
                                 "\", mVersion=\"" + mVersion + "\"]";
         }
     }
 
     private class MyPackageMonitor extends PackageMonitor {
-        public void onPackageRemoved(String packageName, int uid) {
-            synchronized (mLock) {
-                // clear all activity preferences for the package
-                if (clearPackageDefaultsLocked(packageName)) {
-                    writeSettingsLocked();
-                }
-            }
+
+        public void onPackageAdded(String packageName, int uid) {
+            handlePackageUpdate(packageName);
         }
 
-        public void onUidRemoved(int uid) {
-            synchronized (mLock) {
-                // clear all permissions for the UID
-                if (clearUidDefaultsLocked(uid)) {
-                    writeSettingsLocked();
-                }
-            }
+        public void onPackageChanged(String packageName, int uid, String[] components) {
+            handlePackageUpdate(packageName);
+        }
+
+        public void onPackageRemoved(String packageName, int uid) {
+            clearDefaults(packageName);
         }
     }
     MyPackageMonitor mPackageMonitor = new MyPackageMonitor();
 
     public UsbDeviceSettingsManager(Context context) {
         mContext = context;
+        mPackageManager = context.getPackageManager();
         synchronized (mLock) {
             readSettingsLocked();
         }
         mPackageMonitor.register(context, true);
     }
 
-    private void readAccessoryPermission(XmlPullParser parser)
-            throws XmlPullParserException, IOException {
-        int uid = -1;
-        ArrayList<AccessoryFilter> filters = new ArrayList<AccessoryFilter>();
-        int count = parser.getAttributeCount();
-        for (int i = 0; i < count; i++) {
-            if ("uid".equals(parser.getAttributeName(i))) {
-                uid = Integer.parseInt(parser.getAttributeValue(i));
-                break;
-            }
-        }
-        XmlUtils.nextElement(parser);
-        while ("usb-accessory".equals(parser.getName())) {
-            filters.add(AccessoryFilter.read(parser));
-            XmlUtils.nextElement(parser);
-        }
-        mAccessoryPermissionMap.put(uid, filters);
-    }
-
     private void readPreference(XmlPullParser parser)
             throws XmlPullParserException, IOException {
         String packageName = null;
@@ -264,9 +237,7 @@
             XmlUtils.nextElement(parser);
             while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
                 String tagName = parser.getName();
-                if ("accessory-permission".equals(tagName)) {
-                    readAccessoryPermission(parser);
-                } else if ("preference".equals(tagName)) {
+                if ("preference".equals(tagName)) {
                     readPreference(parser);
                  } else {
                     XmlUtils.nextElement(parser);
@@ -299,19 +270,6 @@
             serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);
             serializer.startTag(null, "settings");
 
-            int count = mAccessoryPermissionMap.size();
-            for (int i = 0; i < count; i++) {
-                int uid = mAccessoryPermissionMap.keyAt(i);
-                ArrayList<AccessoryFilter> filters = mAccessoryPermissionMap.valueAt(i);
-                serializer.startTag(null, "accessory-permission");
-                serializer.attribute(null, "uid", Integer.toString(uid));
-                int filterCount = filters.size();
-                for (int j = 0; j < filterCount; j++) {
-                    filters.get(j).write(serializer);
-                }
-                serializer.endTag(null, "accessory-permission");
-            }
-
             for (AccessoryFilter filter : mAccessoryPreferenceMap.keySet()) {
                 serializer.startTag(null, "preference");
                 serializer.attribute(null, "package", mAccessoryPreferenceMap.get(filter));
@@ -335,11 +293,10 @@
     private boolean packageMatchesLocked(ResolveInfo info, String metaDataName,
             UsbAccessory accessory) {
         ActivityInfo ai = info.activityInfo;
-        PackageManager pm = mContext.getPackageManager();
 
         XmlResourceParser parser = null;
         try {
-            parser = ai.loadXmlMetaData(pm, metaDataName);
+            parser = ai.loadXmlMetaData(mPackageManager, metaDataName);
             if (parser == null) {
                 Log.w(TAG, "no meta-data for " + info);
                 return false;
@@ -367,8 +324,7 @@
     private final ArrayList<ResolveInfo> getAccessoryMatchesLocked(
             UsbAccessory accessory, Intent intent) {
         ArrayList<ResolveInfo> matches = new ArrayList<ResolveInfo>();
-        PackageManager pm = mContext.getPackageManager();
-        List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent,
+        List<ResolveInfo> resolveInfos = mPackageManager.queryIntentActivities(intent,
                 PackageManager.GET_META_DATA);
         int count = resolveInfos.size();
         for (int i = 0; i < count; i++) {
@@ -381,75 +337,247 @@
     }
 
     public void accessoryAttached(UsbAccessory accessory) {
-        Intent accessoryIntent = new Intent(UsbManager.ACTION_USB_ACCESSORY_ATTACHED);
-        accessoryIntent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
-        accessoryIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        Intent intent = new Intent(UsbManager.ACTION_USB_ACCESSORY_ATTACHED);
+        intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 
         ArrayList<ResolveInfo> matches;
         String defaultPackage;
         synchronized (mLock) {
-            matches = getAccessoryMatchesLocked(accessory, accessoryIntent);
+            matches = getAccessoryMatchesLocked(accessory, intent);
             // Launch our default activity directly, if we have one.
             // Otherwise we will start the UsbResolverActivity to allow the user to choose.
             defaultPackage = mAccessoryPreferenceMap.get(new AccessoryFilter(accessory));
         }
 
-        int count = matches.size();
-        // don't show the resolver activity if there are no choices available
-        if (count == 0) return;
-
-        if (defaultPackage != null) {
-            for (int i = 0; i < count; i++) {
-                ResolveInfo rInfo = matches.get(i);
-                if (rInfo.activityInfo != null &&
-                        defaultPackage.equals(rInfo.activityInfo.packageName)) {
-                    try {
-                        accessoryIntent.setComponent(new ComponentName(
-                                defaultPackage, rInfo.activityInfo.name));
-                        mContext.startActivity(accessoryIntent);
-                    } catch (ActivityNotFoundException e) {
-                        Log.e(TAG, "startActivity failed", e);
-                    }
-                    return;
-                }
-            }
-        }
-
-        Intent intent = new Intent(mContext, UsbResolverActivity.class);
-        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-
-        intent.putExtra(Intent.EXTRA_INTENT, accessoryIntent);
-        intent.putParcelableArrayListExtra(UsbResolverActivity.EXTRA_RESOLVE_INFOS, matches);
-        try {
-            mContext.startActivity(intent);
-        } catch (ActivityNotFoundException e) {
-            Log.w(TAG, "unable to start UsbResolverActivity");
-        }
+        resolveActivity(intent, matches, defaultPackage, accessory);
     }
 
     public void accessoryDetached(UsbAccessory accessory) {
+        // clear temporary permissions for the accessory
+        mAccessoryPermissionMap.remove(accessory);
+
         Intent intent = new Intent(
                 UsbManager.ACTION_USB_ACCESSORY_DETACHED);
         intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
         mContext.sendBroadcast(intent);
     }
 
-    public void checkPermission(UsbAccessory accessory) {
-        if (accessory == null) return;
-        synchronized (mLock) {
-            ArrayList<AccessoryFilter> filterList = mAccessoryPermissionMap.get(Binder.getCallingUid());
-            if (filterList != null) {
-                int count = filterList.size();
-                for (int i = 0; i < count; i++) {
-                    AccessoryFilter filter = filterList.get(i);
-                    if (filter.equals(accessory)) {
-                        // permission allowed
-                        return;
+    private void resolveActivity(Intent intent, ArrayList<ResolveInfo> matches,
+            String defaultPackage, UsbAccessory accessory) {
+        int count = matches.size();
+
+        // don't show the resolver activity if there are no choices available
+        if (count == 0) {
+            if (accessory != null) {
+                String uri = accessory.getUri();
+                if (uri != null && uri.length() > 0) {
+                    // display URI to user
+                    // start UsbResolverActivity so user can choose an activity
+                    Intent dialogIntent = new Intent();
+                    dialogIntent.setClassName("com.android.systemui",
+                            "com.android.systemui.usb.UsbAccessoryUriActivity");
+                    dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                    dialogIntent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
+                    dialogIntent.putExtra("uri", uri);
+                    try {
+                        mContext.startActivity(dialogIntent);
+                    } catch (ActivityNotFoundException e) {
+                        Log.e(TAG, "unable to start UsbAccessoryUriActivity");
                     }
                 }
             }
+
+            // do nothing
+            return;
         }
-        throw new SecurityException("User has not given permission to accessory " + accessory);
+
+        ResolveInfo defaultRI = null;
+        if (count == 1 && defaultPackage == null) {
+            // Check to see if our single choice is on the system partition.
+            // If so, treat it as our default without calling UsbResolverActivity
+            ResolveInfo rInfo = matches.get(0);
+            if (rInfo.activityInfo != null &&
+                    rInfo.activityInfo.applicationInfo != null &&
+                    (rInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
+                defaultRI = rInfo;
+            }
+        }
+
+        if (defaultRI == null && defaultPackage != null) {
+            // look for default activity
+            for (int i = 0; i < count; i++) {
+                ResolveInfo rInfo = matches.get(i);
+                if (rInfo.activityInfo != null &&
+                        defaultPackage.equals(rInfo.activityInfo.packageName)) {
+                    defaultRI = rInfo;
+                    break;
+                }
+            }
+        }
+
+        if (defaultRI != null) {
+            // grant permission for default activity
+            grantAccessoryPermission(accessory, defaultRI.activityInfo.applicationInfo.uid);
+
+            // start default activity directly
+            try {
+                intent.setComponent(
+                        new ComponentName(defaultRI.activityInfo.packageName,
+                                defaultRI.activityInfo.name));
+                mContext.startActivity(intent);
+            } catch (ActivityNotFoundException e) {
+                Log.e(TAG, "startActivity failed", e);
+            }
+        } else {
+            // start UsbResolverActivity so user can choose an activity
+            Intent resolverIntent = new Intent();
+            resolverIntent.setClassName("com.android.systemui",
+                    "com.android.systemui.usb.UsbResolverActivity");
+            resolverIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            resolverIntent.putExtra(Intent.EXTRA_INTENT, intent);
+            resolverIntent.putParcelableArrayListExtra("rlist", matches);
+            try {
+                mContext.startActivity(resolverIntent);
+            } catch (ActivityNotFoundException e) {
+                Log.e(TAG, "unable to start UsbResolverActivity");
+            }
+        }
+    }
+
+    private boolean clearCompatibleMatchesLocked(String packageName, AccessoryFilter filter) {
+        boolean changed = false;
+        for (AccessoryFilter test : mAccessoryPreferenceMap.keySet()) {
+            if (filter.matches(test)) {
+                mAccessoryPreferenceMap.remove(test);
+                changed = true;
+            }
+        }
+        return changed;
+    }
+
+    private boolean handlePackageUpdateLocked(String packageName, ActivityInfo aInfo,
+            String metaDataName) {
+        XmlResourceParser parser = null;
+        boolean changed = false;
+
+        try {
+            parser = aInfo.loadXmlMetaData(mPackageManager, metaDataName);
+            if (parser == null) return false;
+
+            XmlUtils.nextElement(parser);
+            while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
+                String tagName = parser.getName();
+                if ("usb-accessory".equals(tagName)) {
+                    AccessoryFilter filter = AccessoryFilter.read(parser);
+                    if (clearCompatibleMatchesLocked(packageName, filter)) {
+                        changed = true;
+                    }
+                }
+                XmlUtils.nextElement(parser);
+            }
+        } catch (Exception e) {
+            Log.w(TAG, "Unable to load component info " + aInfo.toString(), e);
+        } finally {
+            if (parser != null) parser.close();
+        }
+        return changed;
+    }
+
+    // Check to see if the package supports any USB devices or accessories.
+    // If so, clear any non-matching preferences for matching devices/accessories.
+    private void handlePackageUpdate(String packageName) {
+        synchronized (mLock) {
+            PackageInfo info;
+            boolean changed = false;
+
+            try {
+                info = mPackageManager.getPackageInfo(packageName,
+                        PackageManager.GET_ACTIVITIES | PackageManager.GET_META_DATA);
+            } catch (NameNotFoundException e) {
+                Log.e(TAG, "handlePackageUpdate could not find package " + packageName, e);
+                return;
+            }
+
+            ActivityInfo[] activities = info.activities;
+            if (activities == null) return;
+            for (int i = 0; i < activities.length; i++) {
+                // check for meta-data, both for devices and accessories
+                if (handlePackageUpdateLocked(packageName, activities[i],
+                        UsbManager.ACTION_USB_ACCESSORY_ATTACHED)) {
+                    changed = true;
+                }
+            }
+
+            if (changed) {
+                writeSettingsLocked();
+            }
+        }
+    }
+
+    public boolean hasPermission(UsbAccessory accessory) {
+        synchronized (mLock) {
+            SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
+            if (uidList == null) {
+                return false;
+            }
+            return uidList.get(Binder.getCallingUid());
+        }
+    }
+
+    public void checkPermission(UsbAccessory accessory) {
+        if (!hasPermission(accessory)) {
+            throw new SecurityException("User has not given permission to accessory " + accessory);
+        }
+    }
+
+    private void requestPermissionDialog(Intent intent, String packageName, PendingIntent pi) {
+        int uid = Binder.getCallingUid();
+
+        // compare uid with packageName to foil apps pretending to be someone else
+        try {
+            ApplicationInfo aInfo = mPackageManager.getApplicationInfo(packageName, 0);
+            if (aInfo.uid != uid) {
+                throw new IllegalArgumentException("package " + packageName +
+                        " does not match caller's uid " + uid);
+            }
+        } catch (PackageManager.NameNotFoundException e) {
+            throw new IllegalArgumentException("package " + packageName + " not found");
+        }
+
+        long identity = Binder.clearCallingIdentity();
+        intent.setClassName("com.android.systemui",
+                "com.android.systemui.usb.UsbPermissionActivity");
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        intent.putExtra(Intent.EXTRA_INTENT, pi);
+        intent.putExtra("package", packageName);
+        intent.putExtra("uid", uid);
+        try {
+            mContext.startActivity(intent);
+        } catch (ActivityNotFoundException e) {
+            Log.e(TAG, "unable to start UsbPermissionActivity");
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    public void requestPermission(UsbAccessory accessory, String packageName, PendingIntent pi) {
+      Intent intent = new Intent();
+
+        // respond immediately if permission has already been granted
+        if (hasPermission(accessory)) {
+            intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
+            intent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, true);
+           try {
+                pi.send(mContext, 0, intent);
+            } catch (PendingIntent.CanceledException e) {
+                Log.w(TAG, "requestPermission PendingIntent was cancelled");
+            }
+            return;
+        }
+
+        intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
+        requestPermissionDialog(intent, packageName, pi);
     }
 
     public void setAccessoryPackage(UsbAccessory accessory, String packageName) {
@@ -472,49 +600,29 @@
 
     public void grantAccessoryPermission(UsbAccessory accessory, int uid) {
         synchronized (mLock) {
-            ArrayList<AccessoryFilter> filterList = mAccessoryPermissionMap.get(uid);
-            if (filterList == null) {
-                filterList = new ArrayList<AccessoryFilter>();
-                mAccessoryPermissionMap.put(uid, filterList);
-            } else {
-                int count = filterList.size();
-                for (int i = 0; i < count; i++) {
-                    if (filterList.get(i).equals(accessory)) return;
-                }
+            SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
+            if (uidList == null) {
+                uidList = new SparseBooleanArray(1);
+                mAccessoryPermissionMap.put(accessory, uidList);
             }
-            filterList.add(new AccessoryFilter(accessory));
-            writeSettingsLocked();
+            uidList.put(uid, true);
         }
     }
 
-    public boolean hasDefaults(String packageName, int uid) {
+    public boolean hasDefaults(String packageName) {
         synchronized (mLock) {
-            if (mAccessoryPermissionMap.get(uid) != null) return true;
-            if (mAccessoryPreferenceMap.values().contains(packageName)) return true;
-            return false;
+            return mAccessoryPreferenceMap.values().contains(packageName);
         }
     }
 
-    public void clearDefaults(String packageName, int uid) {
+    public void clearDefaults(String packageName) {
         synchronized (mLock) {
-            boolean packageCleared = clearPackageDefaultsLocked(packageName);
-            boolean uidCleared = clearUidDefaultsLocked(uid);
-            if (packageCleared || uidCleared) {
+            if (clearPackageDefaultsLocked(packageName)) {
                 writeSettingsLocked();
             }
         }
     }
 
-    private boolean clearUidDefaultsLocked(int uid) {
-        boolean cleared = false;
-        int index = mAccessoryPermissionMap.indexOfKey(uid);
-        if (index >= 0) {
-            mAccessoryPermissionMap.removeAt(index);
-            cleared = true;
-        }
-        return cleared;
-    }
-
     private boolean clearPackageDefaultsLocked(String packageName) {
         boolean cleared = false;
         synchronized (mLock) {
@@ -536,14 +644,14 @@
     public void dump(FileDescriptor fd, PrintWriter pw) {
         synchronized (mLock) {
             pw.println("  Accessory permissions:");
-            int count = mAccessoryPermissionMap.size();
-            for (int i = 0; i < count; i++) {
-                int uid = mAccessoryPermissionMap.keyAt(i);
-                pw.println("    " + "uid " + uid + ":");
-                ArrayList<AccessoryFilter> filters = mAccessoryPermissionMap.valueAt(i);
-                for (AccessoryFilter filter : filters) {
-                    pw.println("      " + filter);
+            for (UsbAccessory accessory : mAccessoryPermissionMap.keySet()) {
+                pw.print("    " + accessory + ": ");
+                SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
+                int count = uidList.size();
+                for (int i = 0; i < count; i++) {
+                    pw.print(Integer.toString(uidList.keyAt(i)) + " ");
                 }
+                pw.println("");
             }
             pw.println("  Accessory preferences:");
             for (AccessoryFilter filter : mAccessoryPreferenceMap.keySet()) {
diff --git a/services/java/com/android/server/usb/UsbService.java b/services/java/com/android/server/usb/UsbService.java
index 6825f19..7b32fd1 100644
--- a/services/java/com/android/server/usb/UsbService.java
+++ b/services/java/com/android/server/usb/UsbService.java
@@ -16,6 +16,7 @@
 
 package com.android.server.usb;
 
+import android.app.PendingIntent;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
@@ -267,10 +268,7 @@
 
     /* returns the currently attached USB accessory (device mode) */
     public UsbAccessory getCurrentAccessory() {
-        synchronized (mLock) {
-            mDeviceManager.checkPermission(mCurrentAccessory);
-            return mCurrentAccessory;
-        }
+        return mCurrentAccessory;
     }
 
     /* opens the currently attached USB accessory (device mode) */
@@ -294,19 +292,28 @@
         mDeviceManager.setAccessoryPackage(accessory, packageName);
     }
 
+    public boolean hasAccessoryPermission(UsbAccessory accessory) {
+        return mDeviceManager.hasPermission(accessory);
+    }
+
+    public void requestAccessoryPermission(UsbAccessory accessory, String packageName,
+            PendingIntent pi) {
+        mDeviceManager.requestPermission(accessory, packageName, pi);
+    }
+
     public void grantAccessoryPermission(UsbAccessory accessory, int uid) {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
         mDeviceManager.grantAccessoryPermission(accessory, uid);
     }
 
-    public boolean hasDefaults(String packageName, int uid) {
+    public boolean hasDefaults(String packageName) {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
-        return mDeviceManager.hasDefaults(packageName, uid);
+        return mDeviceManager.hasDefaults(packageName);
     }
 
-    public void clearDefaults(String packageName, int uid) {
+    public void clearDefaults(String packageName) {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
-        mDeviceManager.clearDefaults(packageName, uid);
+        mDeviceManager.clearDefaults(packageName);
     }
 
     /*
diff --git a/services/jni/com_android_server_UsbService.cpp b/services/jni/com_android_server_UsbService.cpp
index 08a526e..2ce0eaa 100644
--- a/services/jni/com_android_server_UsbService.cpp
+++ b/services/jni/com_android_server_UsbService.cpp
@@ -63,7 +63,6 @@
     buffer[0] = 0;
     int length = ioctl(fd, cmd, buffer);
     if (buffer[0]) {
-        LOGD("string %d: %s", index, buffer);
         jstring obj = env->NewStringUTF(buffer);
         env->SetObjectArrayElement(strArray, index, obj);
         env->DeleteLocalRef(obj);
@@ -73,19 +72,19 @@
 
 static jobjectArray android_server_UsbService_getAccessoryStrings(JNIEnv *env, jobject thiz)
 {
-    LOGD("getAccessoryStrings");
     int fd = open(DRIVER_NAME, O_RDWR);
     if (fd < 0) {
         LOGE("could not open %s", DRIVER_NAME);
         return NULL;
     }
     jclass stringClass = env->FindClass("java/lang/String");
-    jobjectArray strArray = env->NewObjectArray(4, stringClass, NULL);
+    jobjectArray strArray = env->NewObjectArray(5, stringClass, NULL);
     if (!strArray) goto out;
     set_accessory_string(env, fd, ACCESSORY_GET_STRING_MANUFACTURER, strArray, 0);
     set_accessory_string(env, fd, ACCESSORY_GET_STRING_MODEL, strArray, 1);
-    set_accessory_string(env, fd, ACCESSORY_GET_STRING_TYPE, strArray, 2);
+    set_accessory_string(env, fd, ACCESSORY_GET_STRING_DESCRIPTION, strArray, 2);
     set_accessory_string(env, fd, ACCESSORY_GET_STRING_VERSION, strArray, 3);
+    set_accessory_string(env, fd, ACCESSORY_GET_STRING_URI, strArray, 4);
 
 out:
     close(fd);