我會使用處理程序.

private static final int WHAT = 1;

private static final int TIME_TO_WAIT = 5000;

Handler regularHandler = new Handler(new Handler.Callback() {

public boolean handleMessage(Message msg) {

// Do stuff

regularHandler.sendEmptyMessageDelayed(msg.what, TIME_TO_WAIT);

return true;

}

});

regularHandler.sendEmptyMessageDelayed(WHAT, TIME_TO_WAIT);

例如,這將每隔5000毫秒“執行任務”.通過將WHAT作為不同的整數傳入并在handleMessage函數中進行處理,可以使Handler對不同的事件做出反應.

編輯：通常,我會將常量和Handler作為成員,并在onResume(){}中將regularHandler.sendEmptyMessageDelayed(…)放置在類中

我也將其放在onPause(){}中

regularHandler.removeMessages(WHAT)

Edit2：示例：

public class HomeActivity extends Activity implements OnClickListener {

private static final int WHAT = 1;

private static final int TIME_TO_WAIT = 5000;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

textTitle = (TextView) findViewById(R.id.textTitle);

textArtist = (TextView) findViewById(R.id.textArtist);

}

@Override

public void onResume() {

super.onResume();

regularHandler.sendEmptyMessageDelayed(WHAT, TIME_TO_WAIT);

}

@Override

public void onPause() {

super.onPause();

regularHandler.removeMessages(WHAT);

}

Handler regularHandler = new Handler(new Handler.Callback() {

public boolean handleMessage(Message msg) {

// Do stuff

regularHandler.sendEmptyMessageDelayed(msg.what, TIME_TO_WAIT);

return true;

}

});

}

您需要在onResume()和onPause()中執行此操作,因為如果不將其放在onPause中,則當您的Activity不在前臺時,處理程序將繼續循環.您需要使循環在回到前臺時再次啟用(因此onResume()).

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