android4.0 上定制状态栏

a)    代码在系统中的位置
status bar 的相关代码位于：frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar。
其中PhoneStatusBarPolicy类主要负责接收action动作。

frameworks\base\services\java\com\android\server

其他一些核心操作全部位于StatusBarManagerService类里面。

b)    在frameworks\base\core\res\res\values\config.xml中定义需要显示的Icon 的配置信息

 

c)  在frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\PhoneStatusBarPolicy.java 中初始化

       // Alarm clock
        mService.setIcon("alarm_clock", R.drawable.stat_sys_alarm, 0, null);
        mService.setIconVisibility("alarm_clock", false);

        // Sync state
        mService.setIcon("sync_active", R.drawable.stat_sys_sync, 0, null);
        mService.setIcon("sync_failing", R.drawable.stat_sys_sync_error, 0, null);
        mService.setIconVisibility("sync_active", false);
        mService.setIconVisibility("sync_failing", false);

 

d)  在frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\phone\PhoneStatusBarPolicy.java 中注册相应的receiver 来接受intent

 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);
            }
            else if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED) ||
                    action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) {
                updateBluetooth(intent);
            }
            else if (action.equals(AudioManager.RINGER_MODE_CHANGED_ACTION) ||
                    action.equals(AudioManager.VIBRATE_SETTING_CHANGED_ACTION)) {
                updateVolume();
            }
            else if (action.equals(TelephonyIntents.ACTION_SIM_STATE_CHANGED)) {
                updateSimState(intent);
            }
            else if (action.equals(TtyIntent.TTY_ENABLED_CHANGE_ACTION)) {
                updateTTY(intent);
            }
            // [SystemUI] Support "Headset icon". {
            else if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
                updateHeadSet(intent);
            }
            // [SystemUI] Support "Headset icon". }
        }
    };