Android ListView listSelector无效

Question

我正在尝试将自定义选择器设置为ListView.它在较新的设备上工作正常,但不能在较低版本的设备上工作.我希望ListView所选项目保持突出显示.

请帮忙.

提前致谢.

ListView.xml

<?xml version="1.0" encoding="utf-8"?>
        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical" >

            <ListView
                android:id="@+id/listViewBell"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:cacheColorHint="#00000000"
                android:choiceMode="singleChoice"
                android:divider="#b5b5b5"
                android:dividerHeight="1dp"
                android:listSelector="@drawable/list_selector_color" >

            </ListView>

        </LinearLayout>

list_selectror_color.xml

<?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android"
        android:shape="rectangle" >

        <solid android:color="@color/list_selector" />

        <stroke
            android:dashWidth="2dp"
            android:width="1dp"
            android:color="@color/white" />

    </shape>

我也尝试过选择器,但没有任何反应

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/list_selector_color" android:state_pressed="true"/>
    <item android:drawable="@drawable/list_selector_color" android:state_focused="true"/>
    <item android:drawable="@drawable/list_selector_color" android:state_selected="true"/>
    <item android:drawable="@drawable/list_selector_normal"/>

</selector>

这是我的自定义适配器getView方法

public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = (LayoutInflater) mContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        convertView = inflater.inflate(R.layout.listview_bell_items, parent,
                false);

        ImageView imageview = (ImageView) convertView
                .findViewById(R.id.list_bell_image);
        imageview.setImageResource(mDataImage[position]);

        TextView textview = (TextView) convertView
                .findViewById(R.id.txt_bell_title);
        textview.setText(mDataText[position]);

        return convertView;
    }

Answer 1

我有类似的问题.对不起,无法发表评论,所以我发布了一个可能的答案.

1. android:listSelector="@drawable/list_selector_color"从ListView声明中删除属性

2. 在R.layout.listview_bell_items为根布局指定自定义选择器.例如,如果列表项的根布局是RelativeLayout,请尝试:
   <RelativeLayout ... android:background="@drawable/listitem_selector">...

任何其他类型的布局也是如此.

如果仍然无法提供您想要的结果,请提供更多详细信息.

更新 确定,如果没有其他帮助,那么您的问题就会出现临时的脏问题.我不明白为什么它不起作用.

引入一个包含当前所选项的selectedPos变量.

private class MyAdapter extends .../*your base adapter*/ {                
    private static final int NOT_SELECTED = -1;
    private int selectedPos = NOT_SELECTED;

    // if called with the same position multiple lines it works as toggle
    public void setSelection(int position) {
        if (selectedPos == position) {
            selectedPos = NOT_SELECTED;
        } else {
            selectedPos = position;
        }
        notifyDataSetChanged();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = super.getView(position, convertView, parent);
        if (position == selectedPos) {
            // your color for selected item
            view.setBackgroundColor(Color.parseColor("#000000"));
        } else {
            // your color for non-selected item
            view.setBackgroundColor(Color.parseColor("#FFFFFF"));
        }
        return view;
    }
}

现在,在创建并设置ListView适配器后添加以下代码:

final MyAdapter adapter = new MyAdapter(...);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        adapter.setSelection(position);
    }
});