Question

我创建了带复选框的Multiselect微调器但是如果没有从微调器中选择任何内容我点击'确定'然后显示吐司请给出解决方案

public void onClick(DialogInterface dialog, int which, boolean isChecked) {
    if (mSelection != null && which < mSelection.length) {
        mSelection[which] = isChecked;

        simple_adapter.clear();
        simple_adapter.add(buildSelectedItemString());
    } else {
        throw new IllegalArgumentException(
                "Argument 'which' is out of bounds.");
    }
}


@Override
public boolean performClick() {
    final AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
    builder.setMultiChoiceItems(_items, mSelection, this);

    builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface arg0, int arg1) {





        }
    });

    builder.show();
    return true;
}

Answer 1

您可以使用以下代码行在对话框按钮单击侦听器

上显示吐司

       CharSequence[] items={"One","Two"};
       boolean isAnyCheckboxTick=false;
       AlertDialog.Builder builder =
               new AlertDialog.Builder(context);


       builder.setItems(items, new DialogInterface.OnClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int which) {

              isAnyCheckboxTick=true;
           }
       });
       builder.setPositiveButton("OK",new DialogInterface.OnClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int which) {
              if(!isAnyCheckboxTick)
              Toast.makeText(context,"Ok Clicked",Toast.LENGTH_LONG).show();
           }
       });

       builder.show();

Multiselect Spinner CheckBox当我点击'确定'时，我想在对话框中显示Toast

1 个答案: