当后退按钮pressed的onPause不叫？

问题描述

这是我的理解，显然是错误的，那的onPause（）被称为每当后退按钮是pressed？现在在我的code，我已经把这个的onPause（）事件：

It was my understanding, obviously wrong, that onPause() is called whenever the back button is pressed? Now in my code I've put this onPause() event:

@Override
protected void onPause(){
    super.onPause();

    if(!_END_GAME){
        Builder _alert = new AlertDialog.Builder(this)
        .setMessage("onPause, with game NOT over!");
        _alert.setNeutralButton("OK.",
                new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface arg0, int arg1) {
                arg0.dismiss(); // Kills the interface
                System.runFinalizersOnExit(true);
                finish();
            }
        });
        _alert.setTitle("Your Score!");
        _alert.show();
    }

}

现在的问题是，该对话框不会推出什么那么以往，然后code错误的。我把对话框出现，试图以可视化的的onPause（）被调用的地方，帮我调试其他一些变量和这样的。然而，正如我说从来没有被显示。任何想法，为什么这会是什么？是否有先于的onPause推出了功能（）时，后退按钮pressed？预先感谢您的任何信息。

Now the problem is, the dialog does not launch what-so-ever, and then the code errors out. I put the dialog there to try to visualize where the onPause() was called and help me debug some other variables and such. Yet like I said it never even gets shown. Any ideas why this would be? Is there a function that is launched prior to onPause() when the back button is pressed? Thank you in advance for any info.

推荐答案

您应该通过重写检查后退按钮的onkeydown 在不测试在onPause 。 的onPause 被调用时，您的活动叶前景;它不一定整理。 （您可以检查 isFinishing（）了点。）请参阅的。

You should check for the back button by overriding onKeyDown, not testing in onPause. onPause gets called whenever your activity leaves the foreground; it is not necessarily finishing. (You can check isFinishing() for that.) See here for more info on handling the back key.

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