java - 将 arrayList 传递给对话框中的 setMultiChoiceItems

Question

我正在实现一个简单的对话框，其中包含一个选中的 listview。这是我到目前为止所做的:

CharSequence[] items = {"Brand A", "Brand B", "Brand C"};
    AlertDialog.Builder builder = new AlertDialog.Builder(StrengthOfDemandsView.this);
    builder.setTitle("Select Brands");
    final ArrayList seletedItems=new ArrayList();

    builder.setMultiChoiceItems(items, null,
            new DialogInterface.OnMultiChoiceClickListener() {
                // indexSelected contains the index of item (of which checkbox checked)
                @Override
                public void onClick(DialogInterface dialog, int indexSelected,
                                    boolean isChecked) {
                    if (isChecked) {

                        seletedItems.add(indexSelected);
                    } else{
                        seletedItems.remove(Integer.valueOf(indexSelected));
                    }
                }
            })

         .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) {

                }
            });

    dialog = builder.create();
    dialog.show();

问题:

最初，我将数组传递给 setMultiChoiceItems 方法，它工作正常，但如何传递 ArrayList 而不是数组？像这样:

ArrayList<Products> brandList = new ArrayList<>();

每当我尝试将 ArrayList 传递给 setMultiChoiceItems 方法时，它都会给我这个错误:

Cannot resolve method 'setMultiChoiceItems(java.util.ArrayList<com.application.marketvisit.dataItem.Products>, null, anonymous android.content.DialogInterface.OnMultiChoiceClickListener)'

Answer 1

您需要传递一个String 数组给AlertDialog.Builder#setMultiChoiceItems所以将它收集为一个字符串数组

String arr = new String[brandList.size()];
for(int i=0 ; i< brandList.size();i++){
    arr[i] = brandList.get(i).getProductName();
   //getProductName or any suitable method
}