如何在对话框中处理后退按钮?

How to handle Back button with in the dialog?(如何在对话框中处理后退按钮?)

问题描述

我正在开发一个应用程序，当按下按钮时，它会打开一个带有确定和取消按钮的对话框.

I am developing an application that when the button is pressed, it opens a dialog with OK and Cancel buttons.

效果很好.

当用户按下后退按钮时，我按如下方式处理

When the user presses the back button, I am handling this as follows

public boolean onKeyDown(int keyCode, KeyEvent event) 
{
    if ((keyCode == KeyEvent.KEYCODE_BACK)) 
    {

    }
 return super.onKeyDown(keyCode, event);
}

但是上面的方法没有被调用.我该如何处理?

But the above method is not called. How can I handle this?

推荐答案

dialog.setOnKeyListener(new Dialog.OnKeyListener() {

            @Override
            public boolean onKey(DialogInterface arg0, int keyCode,
                    KeyEvent event) {
                // TODO Auto-generated method stub
                if (keyCode == KeyEvent.KEYCODE_BACK) {
                    finish();
                    dialog.dismiss();
                }
                return true;
            }
        });

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