android实现添加耳机状态图标的方法

public class StatusBarPolicy {
 private static final String TAG = "StatusBarPolicy";
 private static StatusBarPolicy sInstance;
 .....
 // alarm clock
 // Icon lit when clock is set
 private IBinder mAlarmClockIcon;
 private IconData mAlarmClockIconData;
 //modify here start
 //HeadSet
 private IBinder mHeadSetPlugIcon;
 private IconData mHeadSetPlugIconData;
 //modify here end
 .....
 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
  @Override
  public void onReceive(Context context, Intent intent) {
   String action = intent.getAction();
   if (action.equals(Intent.ACTION_TIME_TICK)) {
    updateClock();
   }
   .....
   else if (action.equals(Intent.ACTION_ALARM_CHANGED)) {
    updateAlarm(intent);
   }
   //modify here start
   else if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
    updateHeadset(intent);
   }
   //modify here end
   else if (action.equals(Intent.ACTION_SYNC_STATE_CHANGED)) {
    updateSyncState(intent);
   }
   ......
  };
  private StatusBarPolicy(Context context, StatusBarService service) {
  mCOntext= context;
  mService = service;
  mSignalStrength = new SignalStrength();
  if(FeatureOption.MTK_GEMINI_SUPPORT == true) {
   mSignalStrengthGemini = new SignalStrength();
  }
  mBatteryStats = BatteryStatsService.getService();
  ....
  //modify here start
  //HeadSet
  mHeadSetPlugIcOnData= IconData.makeIcon(
   "headset", 
   null,com.android.internal.R.drawable.stat_sys_headset, 0, 0);
  mHeadSetPlugIcon = service.addIcon(mHeadSetPlugIconData, null);
  service.setIconVisibility(mHeadSetPlugIcon, false);
  //modify here end
  ....
  IntentFilter filter = new IntentFilter();
  // Register for Intent broadcasts for...
  filter.addAction(Intent.ACTION_TIME_TICK);
  ....
  //modify here start
  filter.addAction(Intent.ACTION_HEADSET_PLUG);
  //modify here end
  ....
 }
 //modify here start
 private final void updateHeadset(Intent intent) {
  Slog.d(TAG, "updateHeadset: state=" + intent.getIntExtra("state", 0)); 
  mService.setIconVisibility(mHeadSetPlugIcon, (intent.getIntExtra("state", 0) == 1)&＃63;true:false);
 }
 //modify here end
 .....
}

  clock
  secure
  alarm_clock
  battery
  phone_signal_2
  phone_signal
  phone_evdo_signal
  data_connection
  cdma_eri
  tty
  volume
  mute
  speakerphone
  
  headset
  
  wifi
  tty
  bluetooth
  gps
  sync_active
  sync_failing
  ime