选择选项后如何关闭充气机菜单

Question

我创建了一个充气机菜单，它会显示两个按钮，其中一个链接到可单击项目列表，单击该按钮会关闭菜单并返回到主屏幕视图。然而，另一个按钮会弹出一个单选按钮列表，这些单选按钮可以工作，但必须按下返回键才能关闭此菜单。我希望它在选择其中一个选项后自动关闭。

任何有关如何实现这一点的建议将不胜感激，提前感谢您的帮助。

这是我的代码：

@Override
public boolean onCreateOptionsMenu(Menu menu) { //creates the menu options that appear when the menu button is pressed
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.mainmenu, menu);
    return true;
} 
public boolean onOptionsItemSelected(MenuItem item) { // assigns one button in the menu to display Rhythm and then further options

    final CharSequence[] Rhythms = {"Sinus Rhythm", "Atrial Fibulation", "Atrial Flutter", "Junctional Rhythm", "SVT", "Ventricular Tachycardia"};
    AlertDialog.Builder builder = new AlertDialog.Builder(this);

    builder.setTitle("Interpretation of ECG waveform");
    builder.setItems(Rhythms, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int Rhythm) {
            Toast.makeText(getApplicationContext(), Rhythms[Rhythm], Toast.LENGTH_SHORT).show(); // add a save function here to utilise the onclick function
        }                                                                                        // saved file should match the ecg file name and also be loaded when app is started
    });
    final CharSequence[] annotations = {"A", "B", "B-","C", "C-", "D", "F"}; // assigns a new button with the annotation options

    AlertDialog.Builder builder1 = new AlertDialog.Builder(this);
    builder1.setTitle("Evaluate ECG quality");
    builder1.setSingleChoiceItems(annotations, 0, new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int item) {
             Toast.makeText(getApplicationContext(), annotations[item], Toast.LENGTH_SHORT).show();  // again add a save function here, this should be able to override the 
                                                                                                     // annotation coding written by Daniel.
        }
    });

           setCancelable(true);    

    switch (item.getItemId()) { 

    case R.id.annotatebutton: // when annotation button is click display annotation options
        builder1.show();
        return true;

    case R.id.rhythmbutton: // when rhythm button is clicked display rhythm options
        builder.show();        
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

Answer 1

case R.id.annotatebutton:
    builder1.show();
    closeOptionsMenu();
    return true;
case R.id.rhythmbutton:
    builder.show();        
    closeOptionsMenu();
    return true;
default:
    return super.onOptionsItemSelected(item);

您可以使用 closeOptionsMenu() 以编程方式关闭选项菜单，

请参阅 http://developer .android.com/reference/android/app/Activity.html#closeOptionsMenu()

Answer 2

添加这一行：
对话框.dismiss();

    final CharSequence[] annotations = {"A", "B", "B-", "C", "C-", "D", "F"}; // assigns a new button with the annotation options
    AlertDialog.Builder builder1 = new AlertDialog.Builder(this);
    AlertDialog alert;
    builder1.setTitle("Evaluate ECG quality");
    builder1.setSingleChoiceItems(annotations, -1, new DialogInterface.OnClickListener() { //change it by -1
        public void onClick(DialogInterface dialog, int item) {
            Toast.makeText(getApplicationContext(), annotations[item], Toast.LENGTH_SHORT).show();  // again add a save function here, this should be able to override the
            dialog.dismiss(); //add this line
            // annotation coding written by Daniel.
        }
    });

    final CharSequence[] Rhythms = {"Sinus Rhythm", "Atrial Fibulation", "Atrial Flutter", "Junctional Rhythm", "SVT", "Ventricular Tachycardia"};
    final AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Interpretation of ECG waveform");
    builder.setItems(Rhythms, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int Rhythm) {
            Toast.makeText(getApplicationContext(), Rhythms[Rhythm], Toast.LENGTH_SHORT).show(); // add a save function here to utilise the onclick function
        }                                                                                        // saved file should match the ecg file name and also be loaded when app is started
    });

    switch (item.getItemId()) {

        case R.id.op_uno: // when annotation button is click display annotation options
            builder1.show();
            //closeOptionsMenu();
            return true;

        case R.id.op_dos: // when rhythm button is clicked display rhythm options
            builder.show();
            //closeOptionsMenu();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }