public void log(String msg, int i) {
   Log.d(TAG, msg);
   try {
     mLogWriter.print(msg);
   } catch (IOException e) {
     // TODO Auto-generated catch block
     Log.d(TAG, e.getMessage());
   }
 }
  @Override
  public void onCreate() {
    super.onCreate();
    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Tag");
    mWakeLock.acquire();
    File logf =
        new File(Environment.getExternalStorageDirectory() + File.separator + "DemoLog.txt");

    try {
      mLogWriter = LogWriter.open(logf.getAbsolutePath());
    } catch (IOException e) {
      // TODO Auto-generatedo catch block
      log(e.getMessage());
    }
    log("onCreate()");
    // 测试杀掉teamview再打开功能
    try {
      Runtime.getRuntime().exec(new String[] {"/system/bin/su", "-c", "ls -al"});
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    if (!isAppInstalled(WatchService.this, paName)) {
      Log.d("DemoLog", "no install");
      ApkController apkController = new ApkController(WatchService.this);
      apkController.install();
      handler.removeMessages(UPDATE_BEGIN_ZHUANGTAI);
      handler.sendEmptyMessage(UPDATE_BEGIN_ZHUANGTAI);
    } else {
      try {
        startTeamView();
      } catch (Exception e) {

      }
    }
    // 亮度调节
    settingUtils = new SettingUtils(WatchService.this);
    settingUtils.setBrightness(0);
  }