Java 如何在 5 秒延迟后自动单击 Android 中的按钮
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原文地址: http://stackoverflow.com/questions/35708453/
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How to automatically Click a Button in Android after a 5 second delay
提问by Coder1
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.
我有一个小的 Android 应用程序，它会在 5 秒后自动点击按钮。我用过，performClick();但这不起作用。当计时器归零时，它只会崩溃。
Here is my code:
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);
}
});
}
采纳答案by George Mulligan
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.
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。
To do what you want you really don't need another thread. You can use a Handlerand a delayed Runnableinstead like below.
做你想做的事，你真的不需要另一个线程。您可以使用 aHandler和 a delayRunnable代替，如下所示。
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
button1.performClick();
}
}, 5000);
This will schedule the Runnableto be executed on the UI thread after 5 seconds. If that still crashes post the stack trace from logcat.
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。
回答by TechnoBlahble
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();
getLocationOnClick();
}
}
};
timer.start();
} catch (NotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Change you button click method to like this -
将您的按钮单击方法更改为这样 -
public void getLocationOnClick(View v) {
Intent i = new Intent(TestButton2.this, LocationView.class);
startActivity(i);
}
In the xml for your Button add an onClick attribute -
在 Button 的 xml 中添加一个 onClick 属性 -
<Button
android:id="@+id/btnid"
android:onClick="getLocationOnClick"
.... >
回答by Amir Mohsenian
Use the runOnUiThread()method. This method run your method of UI thread
使用runOnUiThread()方法。此方法运行您的 UI 线程方法
