DialogInterface中的Android后退软键代码行

debugcn 发表于 Dev

罗萨里奥（Ej del Rosario）

如何在DialogInterface.OnClickListner肯定按钮内执行back命令？我想先询问用户是否要返回上一个活动。我已经尝试过了，super.onBackPressed();但这不是有效的代码。这是我的代码：

@Override
    public void onBackPressed(){

    DialogInterface.OnClickListener confirm = new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            switch(which){
            case DialogInterface.BUTTON_POSITIVE:{
                //execute back function
                super.onBackPressed();
                break;
            }
            case DialogInterface.BUTTON_NEGATIVE:{
                //Do nothing, just stay on the current activity
            }

            }
        }
    };
    AlertDialog.Builder msgbox = new AlertDialog.Builder(this);
    msgbox.setMessage("Are you sure you want to go back?");
    msgbox.setPositiveButton("Yes", confirm);
    msgbox.setNegativeButton("No", confirm);
    msgbox.show();
}

这super.onBackPressed();给了我这个错误提示The method onBackPressed() is undefined for the type object

TGO

好的，我已经对代码进行了更改以反映您的需求。这应该做。

@Override
    public void onBackPressed(){

    DialogInterface.OnClickListener confirm = new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            switch(which){
            case DialogInterface.BUTTON_POSITIVE:{
                //execute back function
                finish();
                break;
            }
            case DialogInterface.BUTTON_NEGATIVE:{
                //Do nothing, just stay on the current activity
                break;
            }

            }
        }
    };
    AlertDialog.Builder msgbox = new AlertDialog.Builder(this);
    msgbox.setMessage("Are you sure you want to go back?");
    msgbox.setPositiveButton("Yes", confirm);
    msgbox.setNegativeButton("No", confirm);
    msgbox.show();
}

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