Question

我需要在Android中默认情况下（在弹出警报框时）在ALERTDIALOG中显示复选框列表项的列表。

这是我的代码，

 final String[] items = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
    final List<String> itemlist = Arrays.asList(items);


    AlertDialog dialog = new AlertDialog.Builder(this)
            .setTitle("Working days")
            .setMultiChoiceItems(items, seletedvaluesbool, new DialogInterface.OnMultiChoiceClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int indexSelected, boolean isChecked) {

                    if (isChecked) {
                        // If the user checked the item, add it to the selected items
                    seletedvaluesbool[indexSelected] = isChecked;

                    } else if (seletedItems.contains(indexSelected)) {
                        // Else, if the item is already in the array, remove it
                    seletedItems.remove(Integer.valueOf(indexSelected));
                    seletedvaluesbool[indexSelected] = isChecked;
                    }
                }
            }).setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {

                }
            }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                    //  Your code when user clicked on Cancel
                }
            }).create();
    dialog.show();

    }

当对话框弹出时，默认情况下，我需要显示几项为“已选中”。我为此尝试了以下代码，但无法正常工作。

    ListView lv = ((AlertDialog) dialog).getListView();
    dialog.getListView().setSelection(0); //To set the 0th position as checked

任何帮助都会很棒。预先感谢。

Answer 1

代替：

dialog.getListView().setSelection(0);

您应该使用此：

dialog.getListView().setItemChecked(0, true);

如何在AlertDialog中将复选框列表项设置为Checked by DEFAULT？

1 个答案: