也可以分配不同的动作实现onCancelListener:

alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener(){                   
    @Override
    public void onCancel(DialogInterface dialogInterface) {
        //Your custom logic
    } 
});

也可以分配不同的动作实现onCancelListener:

alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener(){                   
    @Override
    public void onCancel(DialogInterface dialogInterface) {
        //Your custom logic
    } 
});

为了防止对话框在返回键按下时被取消，使用这个

dialog.setCancelable(false);

为了防止对话框在外部触摸时消失，使用这个

 dialog.setCanceledOnTouchOutside(false);

警告对话框已弃用，因此使用对话框对话框=新对话框(此);

防止外界接触

dialog.setCanceledOnTouchOutside(false);

将对话框可取消设置为false就足够了，并且您可以在警报对话框外触摸或单击后退按钮将使警报对话框消失。所以就用这个吧:

setCancelable(假)

另一个函数不再需要了: dialog.setCanceledOnTouchOutside(假);

如果你正在创建一个临时对话框，并想把这行代码放在那里，下面是一个例子:

new AlertDialog.Builder(this)
                        .setTitle("Trial Version")
                        .setCancelable(false)
                        .setMessage("You are using trial version!")
                        .setIcon(R.drawable.time_left)
                        .setPositiveButton(android.R.string.yes, null).show();

Dialog dialog = new Dialog(context)
dialog.setCanceledOnTouchOutside(true); 
//use this to dismiss the dialog on outside click of dialog

dialog.setCanceledOnTouchOutside(false);
//use this for not to dismiss the dialog on outside click of dialog.

观看这个链接了解更多关于对话的细节。

dialog.setCancelable(false);
//used to prevent the dismiss of dialog on backpress of that activity

dialog.setCancelable(true);
//used to dismiss the dialog on onbackpressed of that activity