Question

我在setAdapter()上使用AlertDialog.Builder为我的列表提供我自己的自定义ListAdapter。但在调用DialogInterface.OnClickListener()后，对话框会自动被解除。

下面是AlertController.createListView(...)中的Android源代码导致我的对话框被解雇：

if (mOnClickListener != null) {
  listView.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView parent, View v, int position, long id) {
      mOnClickListener.onClick(dialog.mDialogInterface, position);
      if (!mIsSingleChoice) {
        dialog.mDialogInterface.dismiss();
      }
    }
  });
}

目前我正在使用AlertDialog.Builder.setSingleChoiceItems(..)而不是setAdapter(..)。有没有更好的方法来使用自定义ListAdapter并允许在对话框中进行多项选择？我发现将setSingleChoiceItems用于多选列表会产生误导。

Answer 1

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
    m_adapter = new MyAdapter();
    builder.setAdapter(m_adapter, new OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });

    final AlertDialog alertDialog = builder.create();
    // override default behavior of dismissing dialog on clicking list item
    final ListView listView = alertDialog.getListView();
    listView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {

        }
    });

    return alertDialog;
}

Answer 2

您可以使用Handler类的任一方式关闭AlertDailog。请参阅以下代码

if (mOnClickListener != null) 
{
     listView.setOnItemClickListener(new OnItemClickListener() 
     { 
         public void onItemClick(AdapterView parent, View v, int position, long id) 
         {
            mOnClickListener.onClick(dialog.mDialogInterface, position);
           if (!mIsSingleChoice) 
           {
               //dialog.mDialogInterface.dismiss();
              // call handler class as follows, 
                 handler.sendMessage(handler.obtainMessage());
           }
        }
   });
}


private Handler handler = new Handler()
{
      @Override
      public void handleMessage ( Message message )
      {
          dialog.mDialogInterface.dismiss();
      }
};

使用多选AlertDialog时不解除对话框

2 个答案: