如何在延迟5秒后自动点击Android中的按钮 [英] How to automatically Click a Button in Android after a 5 second delay

问题描述

我有一个小型Android应用程序，可在5秒后自动点击按钮。我使用 performClick（）; 但这不起作用。当计时器变为零时，它就会崩溃。

I have a small Android application that automatically clicks the button after 5 seconds. I have used performClick(); but this does not work. When the timer gets to zero it simply crashes.

这是我的代码：

protected void onCreate(Bundle savedInstanceState) {
    try {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.local);
        getActionBar().setIcon(R.drawable.menu_drop);

        buttonClick();

        Thread timer = new Thread(){
            public void run(){ 
                try{
                    sleep(5000);
                } catch (InterruptedException e){
                    e.printStackTrace();
                }finally{
                    button1.performClick();
                }
            }
        };
        timer.start();
    } catch (NotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public void buttonClick() {
    button1 = (Button) findViewById(R.id.button);
    button1.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent i = new Intent(TestButton2.this, LocationView.class);
            startActivity(i);
        } 
    }); 
}

推荐答案

你应该发布你的logcat包含错误消息，但一个问题可能是你正在访问UI线程的UI元素，这不是一个好主意。

You should post your logcat that includes the error message but one issue might be that you are accessing a UI element off the UI thread which isn't a good idea.

要做你想要的你真的不需要另一个线程。您可以使用处理程序和延迟的 Runnable ，如下所示。

To do what you want you really don't need another thread. You can use a Handler and a delayed Runnable instead like below.

new Handler().postDelayed(new Runnable() {
    @Override
    public void run() {
        button1.performClick();
    }
}, 5000);

这将安排 Runnable 执行5秒后在UI线程上。如果仍然崩溃从logcat发布堆栈跟踪。

This will schedule the Runnable to be executed on the UI thread after 5 seconds. If that still crashes post the stack trace from logcat.

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