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我已經創建了一個充氣器菜單，它帶有兩個按鈕，其中一個鏈接指向可點擊項目列表，點擊時關閉菜單並返回主菜單屏幕視圖。然而，另一個按鈕會彈出一個單選按鈕列表，但必須按下返回鍵才能關閉此菜單。我希望一旦選擇了其中一個選項，它就會自動關閉。如何在選擇選項後讓我的充氣器菜單關閉
任何有關如何做到這一點的建議將非常感謝，提前感謝任何幫助。
這裏是我的代碼：
@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);
}
}