Android（二十六）：Spinner 列表下拉选择框

    
    
    

    
    
    

    
    
    

    

    

    spinnerMode="dropdown" 生效
        dropDownHorizontalOffset    下拉框水平偏移
        dropDownVerticalOffset      下拉框垂直偏移
        dropDownSelector            下拉框选中背景颜色
        popupBackground             下拉框背景颜色
        dropDownWidth               下拉框宽度
    spinnerMode                 下拉框显示的形式(dialog：对话框风格的窗口, dropdown：下拉菜单风格的窗口(默认))
    entries                     下拉框数据

    刘备
    关羽
    张飞
    李二蛋

var spinner_03 = (Spinner)FindViewById(Resource.Id.spinner_03);
IList> list = new JavaList>
{
    new JavaDictionary
    {
        { "avatar", Resource.Drawable.avatar },
        { "say", "人海茫茫，你我依旧孤独～～～" }
    },
    new JavaDictionary
    {
        { "avatar", Resource.Drawable.avatar },
        { "say", "谁又能来拯救我这灰暗的人生呢……" }
    },
    new JavaDictionary
    {
        { "avatar", Resource.Drawable.avatar },
        { "say", "道不尽世间的沧桑，诉不完人生的悲凉！" }
    }
};
var keys = new[] { "avatar", "say" };
var targets = new[] { Resource.Id.avatar, Resource.Id.say };
var simpleAdapter = new SimpleAdapter(this, list, Resource.Layout.spinner_item, keys, targets);
if (spinner_03 == null) return;
spinner_03.Adapter = simpleAdapter;
spinner_03.ItemSelected += (sender, args) =>
{
    var say = (TextView)args.View?.FindViewById(Resource.Id.say);
    Toast.MakeText(this, say?.Text, ToastLength.Long)?.Show();
};