Android 设置一个按钮作为后退按钮

我想设置一个简单的警报视图的OK按钮作为后退按钮。我应该用什么方法

AlertDialog.Builder alt_bld = new AlertDialog.Builder(this.getContext());
                AlertDialog alert = alt_bld.create();
                alert.setTitle("Your score is: " + score);
                alert.setButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) { 
  //here would be the "back button's method"
}});
                alert.show();   

只需添加：

NameOfYourContainingClass.this.onBackPressed();

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为此，请在活动中单击此按钮并调用

@Override
public void onBackPressed() 
{ 
     super.onBackPressed();
};



    AlertDialog.Builder alt_bld = new AlertDialog.Builder(this.getContext());
                AlertDialog alert = alt_bld.create();
                alert.setTitle("Your score is: " + score);
                alert.setButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) { 
               onBackPressed();
}});
                alert.show();  

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您必须调用finish方法才能销毁活动

AlertDialog.Builder alt_bld = new AlertDialog.Builder(this.getContext());
                AlertDialog alert = alt_bld.create();
                alert.setTitle("Your score is: " + score);
                alert.setButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) { 

                   // Enter you activity Name add call finish.

                   MyAcitivity.this.finish(); // Or MyAcitivity.this.onBackPressed()

}});
alert.show();   

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您想完成活动吗？还是要解雇Dailog？请注意，我想完成当前活动并关闭对话框，然后返回到上一个活动。这应该是答案