如何使按钮取消CountDownTimer

本文介绍了如何使按钮取消CountDownTimer-Android应用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个带有以下代码的倒数计时器，如何使按钮(i.d button2)停止(或取消)计时器.但也要这样做，如果时间用完了，可以将它们用于Scores.class.

I have a Count down timer with the following code, how can I make a button (i.d button2) stop (or cancel) the timer. but also make it so if the time runs out they are intent'ed to Scores.class.

计时器代码:

LevelOne context; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Intent intent = getIntent(); setContentView(R.layout.activity_level_one); context = this; new CountDownTimer(1500, 1500) { public void onTick(long millisUntilFinished) { } public void onFinish() { Intent intent = new Intent(context, Scores.class); startActivity(intent); } }.start(); }

推荐答案

不要只使用"new CountDownTimer"(不实例化CountDownTimer对象)，否则您基本上将无法再次引用它.

Don't just use "new CountDownTimer" (without instantiating a CountDownTimer object) or else you basically won't have a way to reference it again.

因此，改为创建一个实际的CountDownTimer对象，例如

So instead, make an actual CountDownTimer object, e.g.

CountDownTimer myCountDownTimerObject = new CountDownTimer(1500, 1500) { public void onTick(long millisUntilFinished) { } public void onFinish() { Intent intent = new Intent(context, Scores.class); startActivity(intent); } };

请注意，我没有包含".start()".那是因为您稍后会调用它在onCreate或您要启动"计时器的任何地方.

Notice there I did not include the ".start()". That is because you will call it later e.g. in onCreate, or wherever you want to "start" your timer.

因此，在onCreate(例如)中，写:

So, in onCreate (for example), write:

myCountDownTimerObject.start();

然后，在onClick中为您的按钮键入以下内容:

Then, inside your onClick for your button, type this:

myCountDownTimerObject.cancel();

我希望这会有所帮助！

编辑

EDIT

public class MyActivity extends Activity { Button myButton; CountDownTimer timer = new CountDownTimer(30000, 1000) { @Override public void onFinish() { Intent intent = new Intent("com.example.intentForYourActivity"); startActivity(intent); } @Override public void onTick(long arg0) { //do something } }; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //ass soon as this activity is created, I start my timer. timer.start(); myButton = (Button) findViewById(R.id.cancel); myButton.setOnClickListener(new OnClickListener(){ @Override public void onClick(View arg0) { timer.cancel(); }}); } }