commit fbc01fcbd5cae80c56745102b40d6b764050d630
author Mike Ma <yanmin@google.com> Mon Apr 02 10:28:28 2018 -0700
committer Mike Ma <yanmin@google.com> Tue Apr 03 12:32:56 2018 -0700
tree 3ab7f1a116dde1b38f192a2a0800b4d7c8d360d8
parent 7219f8bac8447a4e4a1ff55341f4a461865bf9bf

Register broadcast receiver at runtime instead

Cannot find class when registering Usb connection broadcast receiver
in AndroidManifest, causing system process to crash. Switch to
register receiver at runtime when boot complete.

Fixes: 77274266
Test: Manually plug & unplug usb cable, and reboot device
Test: Verify usb_data appears in batterystats dump
Test: Verify there is no crash log
Change-Id: If4a9e85aa81173ad6d8cb6ce28cc030814c520a5

core/java/com/android/internal/os/BatteryStatsImpl.java

diff --git a/core/java/com/android/internal/os/BatteryStatsImpl.java b/core/java/com/android/internal/os/BatteryStatsImpl.java
index 89f6156..5da3874 100644
--- a/core/java/com/android/internal/os/BatteryStatsImpl.java
+++ b/core/java/com/android/internal/os/BatteryStatsImpl.java
@@ -21,10 +21,13 @@
 import android.app.ActivityManager;
 import android.bluetooth.BluetoothActivityEnergyInfo;
 import android.bluetooth.UidTraffic;
+import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.database.ContentObserver;
+import android.hardware.usb.UsbManager;
 import android.net.ConnectivityManager;
 import android.net.NetworkStats;
 import android.net.Uri;
@@ -766,7 +769,10 @@
     int mCameraOnNesting;
     StopwatchTimer mCameraOnTimer;
 
-    int mUsbDataState; // 0: unknown, 1: disconnected, 2: connected
+    private static final int USB_DATA_UNKNOWN = 0;
+    private static final int USB_DATA_DISCONNECTED = 1;
+    private static final int USB_DATA_CONNECTED = 2;
+    int mUsbDataState = USB_DATA_UNKNOWN;
 
     int mGpsSignalQualityBin = -1;
     @VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE)
@@ -5241,8 +5247,30 @@
         }
     }
 
-    public void noteUsbConnectionStateLocked(boolean connected) {
-        int newState = connected ? 2 : 1;
+    private void registerUsbStateReceiver(Context context) {
+        final IntentFilter usbStateFilter = new IntentFilter();
+        usbStateFilter.addAction(UsbManager.ACTION_USB_STATE);
+        context.registerReceiver(new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                final boolean state = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
+                synchronized (BatteryStatsImpl.this) {
+                    noteUsbConnectionStateLocked(state);
+                }
+            }
+        }, usbStateFilter);
+        synchronized (this) {
+            if (mUsbDataState == USB_DATA_UNKNOWN) {
+                final Intent usbState = context.registerReceiver(null, usbStateFilter);
+                final boolean initState = usbState != null && usbState.getBooleanExtra(
+                        UsbManager.USB_CONNECTED, false);
+                noteUsbConnectionStateLocked(initState);
+            }
+        }
+    }
+
+    private void noteUsbConnectionStateLocked(boolean connected) {
+        int newState = connected ? USB_DATA_CONNECTED : USB_DATA_DISCONNECTED;
         if (mUsbDataState != newState) {
             mUsbDataState = newState;
             if (connected) {
@@ -13218,6 +13246,7 @@
 
     public void systemServicesReady(Context context) {
         mConstants.startObserving(context.getContentResolver());
+        registerUsbStateReceiver(context);
     }
 
     @VisibleForTesting