处理程序或计时器android

Question

我试着每1分钟显示一次消息！ 不停！ 我发现在固定延迟后只显示一次msg的例子！ 你能帮忙怎么设置它？ 或者如果使用计时器是更好的工作方式，我需要一个例子！

public class TimertestActivity extends Activity {
    /** Called when the activity is first created. */

      @Override   
      public void onCreate(Bundle icicle) {   
        super.onCreate(icicle);   
        setContentView(R.layout.main);  
        Handler handler = new Handler();
        handler.postDelayed(
            new Runnable() {
                public void run() {
                    afficher();
                }
            }, 1000L);

      }   

      public void afficher()
      {
          Toast.makeText(getBaseContext(),
                     "test",
                     Toast.LENGTH_SHORT).show();
      }
}

谢谢！

Answer 1

试试这个代码 -

public class TimertestActivity extends Activity {
    Handler handler = new Handler();
    Runnable runnable = new Runnable() {
        public void run() {
            afficher();
        }
    };

    /** Called when the activity is first created. */

      @Override   
      public void onCreate(Bundle icicle) {   
        super.onCreate(icicle);   
        setContentView(R.layout.main);  
        runnable.run();
      }   

      public void afficher()
      {
          Toast.makeText(getBaseContext(),
                     "test",
                     Toast.LENGTH_SHORT).show();
          handler.postDelayed(runnable, 1000);
      }
}

Answer 2

// Timer using Handler

private final int SPLASH_TIME = 3000;

// Handling splash timer.
private void startSplashTimer() {
    new Handler().postDelayed(
    new Runnable() {
    @Override
    public void run() {
        startActivity(new Intent(SplashScreen.this,MainActivity.class));
    }
}, SPLASH_TIME);

}

Answer 3

您可以使用TimerTask 。但是当您的设备进入休眠状态时它将无法工作，所以我认为您可以使用AlarmManager 。 无论如何，请参阅此链接以获取TimerTask ，

AlarmManager代码，

AlarmManager am = (AlarmManager) Context.getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                SystemClock.elapsedRealtime(), interval, pendingIntent);