Question

我有一个只显示图像的ListView。我想要一个功能，如果我点击ListView中的任何图像，它应该打开一个弹出菜单，弹出菜单应该包含3-4个复选框，其中一些名称代表用户想要将该图像放入的文件夹。 / p>

我到处搜索，但找不到任何此类教程。我该如何实施呢？

Answer 1

尝试这样的事情：

ListView listview = (ListView) findViewById(R.id.list_item);
final CharSequence[] items = {" Easy "," Medium "," Hard "," Very Hard "};
final ArrayList selectedItems=new ArrayList();
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    AlertDialog.Builder builder = new AlertDialog.Builder(ActualActivity.this);
    builder.setTitle("This is a title");

    builder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which, boolean isChecked) {
            //Here you add or remove the items from the list selectedItems. That list will be the result of the user selection.
            if (isChecked) {
                selectedItems.add(which);
             } else if (selectedItems.contains(which)) {
                        selectedItems.remove(Integer.valueOf(which));
                    }
                }
            });

    builder.setPositiveButton("Done", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

            //Do something when the user closes the dialog by pressing the Done button
        }
    });

    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
             dialog.dismiss();
             //Do something else if you want
        }
    });

       builder.create();
       builder.show();
    }
});

基于this answer！

如何在单击列表视图中的项目时创建弹出的复选框？

1 个答案: