如何在 5 秒延迟后自动单击 Android 中的按钮

问题描述

我有一个小的 Android 应用程序，它会在 5 秒后自动点击按钮.我使用了 performClick(); 但这不起作用.当计时器归零时，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

您应该发布包含错误消息的 logcat，但一个问题可能是您正在从 UI 线程访问 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.

要做你想做的事，你真的不需要另一个线程.您可以使用 Handler 和延迟的 Runnable 代替，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 在 5 秒后在 UI 线程上执行.如果仍然崩溃，请从 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.

这篇关于如何在 5 秒延迟后自动单击 Android 中的按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！