Android Status bar添加耳机图标

1. 将耳机资源图片文件stat_sys_headset.png放到android/frameworks/base/packages/SystemUI/res/drawable-nodpi/
2. 修改android/frameworks/base/core/res/res/values/config.xml

      
          ime
          volume
          headset
          wifi
      

3. 修改android\frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\PhoneStatusBarPolicy.java

private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (action.equals(Intent.ACTION_ALARM_CHANGED)) {
                updateAlarm(intent);
            }
            else if (action.equals(Intent.ACTION_SYNC_STATE_CHANGED)) {
                updateSyncState(intent);
            }
            ......

            //add start

            else if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
		updateHeadset(intent);   
            }//zhanbing add end
	}

 

public PhoneStatusBarPolicy(Context context) {
        mContext = context;
        mService = (StatusBarManager)context.getSystemService(Context.STATUS_BAR_SERVICE);

        // listen for broadcasts
        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_ALARM_CHANGED);
        filter.addAction(TtyIntent.TTY_ENABLED_CHANGE_ACTION);
        ......

        filter.addAction(Intent.ACTION_HEADSET_PLUG);//zhanbing add
        mContext.registerReceiver(mIntentReceiver, filter, null, mHandler);

        ......

        //headset zhanbing.li add
        mService.setIcon("headset", R.drawable.stat_sys_headset, 0, null);
        mService.setIconVisibility("headset", false);
        //zhanbing modify here end

//modify here start

private final void updateHeadset(Intent intent) {
        Slog.d(TAG, "updateHeadset: state=" + intent.getIntExtra("state", 0));
        mService.setIconVisibility("headset", (intent.getIntExtra("state", 0) == 1)?true:false);

}

//modify here end