Android 一起关闭警报对话框和 Activity

Question

在我的 android 应用程序中，我有一个警报对话框将在创建 activity 时作为 sson 打开，并根据警报对话框中给出的文本完成搜索，结果显示在列表视图中.但是，当我单击后退按钮时，警告对话框会先关闭，然后我需要再次单击后退按钮来关闭当前 activity。但是我需要在一个后退按钮中关闭警报对话框和 Activity click.I 我给出了下面的代码。

AlertDialog alertDialog;

    public SampleTest() {
        alertDialog = null;
    }


    public void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.search_branch_list);



        LayoutInflater li = LayoutInflater.from(context);
        View promptsView = li.inflate(R.layout.search_branch_predict, null);

        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                context);

        // set prompts.xml to alertdialog builder
        alertDialogBuilder.setView(promptsView);

        final EditText userInput = (EditText) promptsView
                .findViewById(R.id.edittext);

        final Button btnSearch = (Button) promptsView.findViewById(R.id.search_Button);


        // create alert dialog
        alertDialog = alertDialogBuilder.create();

        // show it
        alertDialog.show();

}
}
}

Answer 1

您可以将 onBackPressed() 方法重写为：

 @Override
    public void onBackPressed() {
        alertDialog.dismiss();
        yourActivity.this.finish();
    }

Answer 2

覆盖 activity 中的 onBackPressed() 并检查您的警报对话框是否打开，然后调用 finish 终止 activity。

    @Override
   public void onBackPressed() {
    if(alertDialog.isShowing()){
     alertDilaog.dismiss(); // this will dismiss your dialog
     finish(); // this will kill your activity
    }else{
     super.onBackPressed();   
    }
  }

Answer 3

试试这个，

@Override  
public boolean onKeyDown(int keyCode, KeyEvent event)  
{  
     //replaces the default 'Back' button action  
     if(keyCode==KeyEvent.KEYCODE_BACK)  
     {  

        dialog.dismiss();
        finish();

     }  
     return true;  
}

或

@Override
public void onBackPressed() {
    dialog.dismiss();
    finish();
}

编辑 1：

LayoutInflater li = LayoutInflater.from(context);
LinearLayout mainLayout = (LinearLayout) li.inflate(R.id.YOUR_LAYOU_ID_HERE, this);

mainLayout.setOnTouchListener(new OnTouchListener() {

        public boolean onTouch(View v, MotionEvent event) {
            int eid = event.getAction();
            switch (eid) {
            case MotionEvent.ACTION_DOWN:
                finish();
                break;
            }
            return true;
        }
    });

这可能对你有帮助。

Android 一起关闭警报对话框和 Activity

Android Close Alert Dialog box and Activity together

android

android-alertdialog

android-activity