1 package com.android.bluetooth.btservice; 2 3 import android.bluetooth.BluetoothAdapter; 4 import android.content.BroadcastReceiver; 5 import android.content.Context; 6 import android.content.Intent; 7 import android.content.IntentFilter; 8 import android.database.ContentObserver; 9 import android.os.Handler; 10 import android.provider.Settings; 11 12 /** 13 * This helper class monitors the state of the enabled profiles and will update and restart 14 * the adapter when necessary. 15 */ 16 public class ProfileObserver extends ContentObserver { 17 private Context mContext; 18 private AdapterService mService; 19 private AdapterStateObserver mStateObserver; 20 21 public ProfileObserver(Context context, AdapterService service, Handler handler) { 22 super(handler); 23 mContext = context; 24 mService = service; 25 mStateObserver = new AdapterStateObserver(this); 26 } 27 28 public void start() { 29 mContext.getContentResolver().registerContentObserver( 30 Settings.Global.getUriFor(Settings.Global.BLUETOOTH_DISABLED_PROFILES), false, 31 this); 32 } 33 34 private void onBluetoothOff() { 35 mContext.unregisterReceiver(mStateObserver); 36 Config.init(mContext); 37 mService.enable(); 38 } 39 40 public void stop() { 41 mContext.getContentResolver().unregisterContentObserver(this); 42 } 43 44 @Override 45 public void onChange(boolean selfChange) { 46 if (mService.isEnabled()) { 47 mContext.registerReceiver(mStateObserver, 48 new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); 49 mService.disable(); 50 } 51 } 52 53 private static class AdapterStateObserver extends BroadcastReceiver { 54 private ProfileObserver mProfileObserver; 55 56 public AdapterStateObserver(ProfileObserver observer) { 57 mProfileObserver = observer; 58 } 59 60 @Override 61 public void onReceive(Context context, Intent intent) { 62 if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(intent.getAction()) 63 && intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, -1) 64 == BluetoothAdapter.STATE_OFF) { 65 mProfileObserver.onBluetoothOff(); 66 } 67 } 68 } 69 } 70
