Android 计时器滴答一次后停止

Question

我需要在 10 秒后隐藏 TextView。我想我可以实现一个计时器，当经过的时间大于 10000 毫秒时，我隐藏 TextView。我的问题是计时器只滴答一次然后就停止了。知道我错过了什么吗？

Activity ctx = this;
...

private void ShowText(String message)
    {
        txtProceed.setText(message);
        txtProceed.setVisibility(View.VISIBLE);


        chronoHideText = new Chronometer(ctx);
        chronoHideText.setOnChronometerTickListener(new OnChronometerTickListener()
        {
               public void onChronometerTick(Chronometer arg0) {

                  long elapsed = SystemClock.elapsedRealtime() - chronoHideText.getBase();
                  Log.i("Chrono",String.valueOf(elapsed));
                   if (elapsedTime>10000)
                   {
                       txtProceed.setVisibility(View.INVISIBLE);
                       chronoHideText.stop();
                   }
               }
        }
        );

        chronoHideText.setBase(SystemClock.elapsedRealtime());
        chronoHideText.start();

    }

谢谢贾努斯的帮助。现在效果很好的解决方案是：

Handler splashHandler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                    switch (msg.what) {
                    case 0:
                            //remove SplashScreen from view
                            txtProceed.setVisibility(View.INVISIBLE);
                            break;
                    }
                    super.handleMessage(msg);
            }
    };

    Message msg = new Message();
    msg.what = 0;
    splashHandler.sendMessageDelayed(msg, 10000);

Answer 1

您可以使用 handleMessage 方法。

这样你就不需要自己测量时间并每秒或毫秒进行计算工作。在 Android 操作系统传送消息之前，您的应用程序不会占用任何 cpu 时间。

Answer 2

public class ButtonVisibility extends Activity {

Button mButton;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.layout_button);

    mButton = (Button)findViewById(R.id.button);

    new MyTask().execute(null);
}

public class MyTask extends AsyncTask<Void, Void, Void> {

    @Override
    protected Void doInBackground(Void... params) {
        try {
            Thread.sleep(10000);
        }
        catch(InterruptedException e) {
            Log.e("MyTask", "InterruptedException", e);
        }
        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);
        mButton.setVisibility(View.INVISIBLE);
    }
  }

}