| /* |
| * Copyright (C) 2016 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 android.car.usb.handler; |
| |
| import static android.content.Intent.ACTION_USER_UNLOCKED; |
| |
| import android.annotation.Nullable; |
| import android.app.Activity; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.hardware.usb.UsbDevice; |
| import android.hardware.usb.UsbManager; |
| import android.os.Bundle; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Log; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.Window; |
| import android.widget.AdapterView; |
| import android.widget.ArrayAdapter; |
| import android.widget.ImageView; |
| import android.widget.LinearLayout; |
| import android.widget.ListView; |
| import android.widget.TextView; |
| |
| import java.util.List; |
| |
| /** |
| * Activity to handle USB device attached. |
| * <p> |
| * When user plugs in USB device: a) Device was used before and user selected handler for it. In |
| * this case handler will be launched. b) Device has not handler assigned. In this case supported |
| * handlers will be captured, and user will be presented with choice to assign default handler. |
| * After that handler will be launched. |
| */ |
| public class UsbHostManagementActivity extends Activity { |
| private static final String TAG = UsbHostManagementActivity.class.getSimpleName(); |
| |
| private HandlersAdapter mListAdapter; |
| private ListView mHandlersList; |
| private TextView mHandlerTitle; |
| private LinearLayout mUsbHandlersDialog; |
| private UsbHostController mController; |
| private PackageManager mPackageManager; |
| |
| private final ResolveBroadcastReceiver mResolveBroadcastReceiver |
| = new ResolveBroadcastReceiver(); |
| private boolean mReceiverRegistered = false; |
| |
| private void unregisterResolveBroadcastReceiver() { |
| if (mReceiverRegistered) { |
| unregisterReceiver(mResolveBroadcastReceiver); |
| mReceiverRegistered = false; |
| } |
| } |
| |
| private void processDevice() { |
| UsbDevice connectedDevice = getDevice(); |
| |
| if (connectedDevice != null) { |
| mController.processDevice(connectedDevice); |
| } else { |
| unregisterResolveBroadcastReceiver(); |
| finish(); |
| } |
| } |
| |
| private class ResolveBroadcastReceiver extends BroadcastReceiver { |
| public void onReceive(Context context, Intent intent) { |
| // We could have been unregistered after receiving the intent but before processing it, |
| // so make sure we are still registered. |
| if (mReceiverRegistered) { |
| processDevice(); |
| unregisterResolveBroadcastReceiver(); |
| } |
| } |
| } |
| |
| private final AdapterView.OnItemClickListener mHandlerClickListener = |
| new AdapterView.OnItemClickListener() { |
| @Override |
| public void onItemClick(AdapterView<?> parent, final View view, int position, long id) { |
| UsbDeviceSettings settings = (UsbDeviceSettings) parent.getItemAtPosition(position); |
| settings.setDefaultHandler(true); |
| mController.applyDeviceSettings(settings); |
| } |
| }; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| requestWindowFeature(Window.FEATURE_NO_TITLE); |
| setContentView(R.layout.usb_host); |
| mUsbHandlersDialog = findViewById(R.id.usb_handlers_dialog); |
| mHandlersList = findViewById(R.id.usb_handlers_list); |
| mHandlerTitle = findViewById(R.id.usb_handler_heading); |
| mListAdapter = new HandlersAdapter(this); |
| mHandlersList.setAdapter(mListAdapter); |
| mHandlersList.setOnItemClickListener(mHandlerClickListener); |
| mController = new UsbHostController(this, new UsbCallbacks()); |
| mPackageManager = getPackageManager(); |
| } |
| |
| @Override |
| public void onDestroy() { |
| super.onDestroy(); |
| mController.release(); |
| } |
| |
| @Override |
| public void onPause() { |
| super.onPause(); |
| unregisterResolveBroadcastReceiver(); |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| |
| UserManager userManager = getSystemService(UserManager.class); |
| if (userManager.isUserUnlocked() || getUserId() == UserHandle.USER_SYSTEM) { |
| processDevice(); |
| } else { |
| mReceiverRegistered = true; |
| registerReceiver(mResolveBroadcastReceiver, new IntentFilter(ACTION_USER_UNLOCKED)); |
| // in case the car was unlocked while the receiver was being registered |
| if (userManager.isUserUnlocked()) { |
| mResolveBroadcastReceiver.onReceive(this, new Intent(ACTION_USER_UNLOCKED)); |
| } |
| } |
| } |
| |
| class UsbCallbacks implements UsbHostController.UsbHostControllerCallbacks { |
| private boolean mProcessing = false; |
| |
| @Override |
| public void shutdown() { |
| runOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| finish(); |
| } |
| }); |
| } |
| |
| @Override |
| public void processingStarted() { |
| mProcessing = true; |
| runOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| if (mProcessing && !mListAdapter.isEmpty()) { |
| mUsbHandlersDialog.setVisibility(View.VISIBLE); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void titleChanged(final String title) { |
| runOnUiThread(() -> mHandlerTitle.setText(title)); |
| } |
| |
| @Override |
| public void optionsUpdated(final List<UsbDeviceSettings> options) { |
| if (options != null && !options.isEmpty()) { |
| runOnUiThread(new Runnable() { |
| @Override |
| public void run() { |
| if (mProcessing) { |
| mUsbHandlersDialog.setVisibility(View.VISIBLE); |
| } |
| mListAdapter.clear(); |
| mListAdapter.addAll(options); |
| } |
| }); |
| } |
| } |
| } |
| |
| @Override |
| public void onNewIntent(Intent intent) { |
| super.onNewIntent(intent); |
| setIntent(intent); |
| } |
| |
| @Nullable |
| private UsbDevice getDevice() { |
| if (!UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(getIntent().getAction())) { |
| return null; |
| } |
| return (UsbDevice) getIntent().getParcelableExtra(UsbManager.EXTRA_DEVICE); |
| } |
| |
| private class HandlersAdapter extends ArrayAdapter<UsbDeviceSettings> { |
| class HandlerHolder { |
| public TextView mAppName; |
| public ImageView mAppIcon; |
| } |
| |
| HandlersAdapter(Context context) { |
| super(context, R.layout.usb_handler_row); |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| View rowView = convertView; |
| if (rowView == null) { |
| rowView = getLayoutInflater().inflate(R.layout.usb_handler_row, null); |
| HandlerHolder holder = new HandlerHolder(); |
| holder.mAppName = (TextView) rowView.findViewById(R.id.usb_handler_title); |
| holder.mAppIcon = (ImageView) rowView.findViewById(R.id.usb_handler_icon); |
| rowView.setTag(holder); |
| } |
| |
| HandlerHolder holder = (HandlerHolder) rowView.getTag(); |
| ComponentName handler = getItem(position).getHandler(); |
| |
| try { |
| ApplicationInfo appInfo = |
| mPackageManager.getApplicationInfo(handler.getPackageName(), 0); |
| holder.mAppName.setText(appInfo.loadLabel(mPackageManager)); |
| holder.mAppIcon.setImageDrawable(appInfo.loadIcon(mPackageManager)); |
| } catch (NameNotFoundException e) { |
| Log.e(TAG, "Handling package not found: " + handler.getPackageName()); |
| holder.mAppName.setText(handler.flattenToShortString()); |
| holder.mAppIcon.setImageResource(android.R.color.transparent); |
| } |
| return rowView; |
| } |
| } |
| } |