Question

我正在使用cs3组合框控件。我希望提示“选择一个城市”保持不变，但只要您在列表中选择一个项目，它就会消失。有谁知道如何解决这个问题？

谢谢！

public class ComboSkin extends Sprite
{
    private var _cboCities:ComboBox = new ComboBox();

    public function ComboSkin()
    {
        init();
    }


    private function init():void
    {
        _cboCities.y = 30;
        _cboCities.setSize(100, 15); 
        _cboCities.prompt = "Select a City";

        var items:Array = [ 
            {label:"San Francisco", data:"601 Townsend St."}, 
            {label:"San Jose", data:"345 Park Ave."}, 
            {label:"San Diego", data:"10590 West Ocean Air Drive, Suite 100"}, 
            {label:"Santa Rosa", data:"2235 Mercury Way, Suite 105"}, 
            {label:"San Luis Obispo", data:"3220 South Higuera Street, Suite 311"} 
        ]; 
        _cboCities.dataProvider = new DataProvider(items);


        var tf:TextFormat;// = new TextFormat(); 

        tf = new TextFormat("Arial", 8, 0x000000);
        _cboCities.textField.height = 10;
        _cboCities.textField.setStyle("textFormat", tf);
        addChild(_cboCities);
    }
}
}

Answer 1

选择下拉列表后，只需将selectedItem保存在您自己的类中，然后将数据提供者重新分配给组件，它将覆盖所有数据，并且提示应该再次可见。

var selectedCity = null;

_cboCities.y = 30;

_cboCities.setSize（100,30）;

_cboCities.prompt =“选择一个城市”;

    var items:Array = [ 
        {label:"San Francisco", data:"601 Townsend St."}, 
        {label:"San Jose", data:"345 Park Ave."}, 
        {label:"San Diego", data:"10590 West Ocean Air Drive,Suite 100"}, 
        {label:"Santa Rosa", data:"2235 Mercury Way, Suite 105"}, 
        {label:"San Luis Obispo", data:"3220 South Higuera Street,Suite 311"} 
    ]; 

    _cboCities.dataProvider = new DataProvider(items);

  _cboCities.addEventListener(SliderEvent.CHANGE, function():void{

              selectedCity = items[_cboCities.selectedIndex].label;

              trace(selectedCity)

              _cboCities.dataProvider = new DataProvider(items);

  })

Flash组合框 - 消失提示

1 个答案: