在对话框中如何处理后退按钮? [英] How to handle Back button with in the dialog?
本文介绍了在对话框中如何处理后退按钮?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在开发一个应用程序,当按下按钮时,它会打开一个对话框,并点击确定和取消按钮。
当用户按下后退按钮时,我正在处理如下
public boolean onKeyDown (int keyCode,KeyEvent事件)
{
if((keyCode == KeyEvent.KEYCODE_BACK))
{
}
返回super.onKeyDown keyCode,event);
}
但是上面的方法没有被调用。如何处理这个?
解决方案
dialog.setOnKeyListener(new Dialog.OnKeyListener {
@Override
public boolean onKey(DialogInterface arg0,int keyCode,
KeyEvent event){
// TODO自动生成的方法存根
if (keyCode == KeyEvent.KEYCODE_BACK){
finish();
dialog.dismiss();
}
return true;
}
}) ;
I am developing an application that when the button is pressed, it opens a dialog with OK and Cancel buttons.
It works fine.
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);
}
But the above method is not called. How can I handle this?
解决方案
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;
}
});
这篇关于在对话框中如何处理后退按钮?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IT屋!
查看全文