的Android AlertDialog没有显示单选按钮或消息

Question

在我的应用我带来了上长按一个ListActivity的上下文菜单。其中一个选项“优先级” 3个单选按钮，选择弹出一个AlertDialog。问题是，它会显示没有我的3只选择一个空的对话框，或消息，我设置。这是我的代码..

protected Dialog onCreateDialog(int id) {
    AlertDialog dialog;
    switch(id) {
    case DIALOG_SAB_PRIORITY_ID:
        final CharSequence[] items = {"High", "Normal", "Low"};

        AlertDialog.Builder builder = new AlertDialog.Builder(SabMgmt.this);
        builder.setMessage("Select new priority")
               .setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
            }
        });

        dialog = builder.create();            
        break;
    default:
        dialog = null;
    }
    return dialog;
}

如果我更换一个正和负按钮代替.setSingleChoiceItems，它显示的按钮和该消息如预期。我在做什么错在建立我的单选按钮列表？这是我的调用代码以及..

public boolean onContextItemSelected(MenuItem item) {
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
    switch (item.getItemId()) {
    case R.id.sabdelete:
        // Correct position (-1) for 1 header
        final SabQueueItem qItem = (SabQueueItem) itla.getItem(info.position-1);
        SabNZBdUtils.deleteItem(qItem.getNzo_id());
        getQueue();
        ListView lv = getListView();
        View v = lv.findViewById(R.id.sablistheader);
        setHeader(v);
        itla.notifyDataSetChanged();
        return true;
    case R.id.sabpriority:
        showDialog(DIALOG_SAB_PRIORITY_ID);
        return true;
    default:
        return super.onContextItemSelected(item);
    }
}

Answer 1

想通了！我用一个singleChoiceItem对话，而不是builder.setTitle builder.setMessage。看来，使用单选按钮选择对话框不支持设置一条消息，只有一个标题。似乎奇怪的是，该方法虽然提供。总之，这里是工作代码..

protected Dialog onCreateDialog(int id) {
    AlertDialog dialog;
    switch(id) {
    case DIALOG_SAB_PRIORITY_ID:
        final CharSequence[] items = {"High", "Normal", "Low"};

        AlertDialog.Builder builder = new AlertDialog.Builder(SabMgmt.this);
        builder.setTitle("Select new priority")
               .setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
            }
        });

        dialog = builder.create();  
        break;
    default:
        dialog = null;
    }
    return dialog;