【Egret】中tree组件使用案例

Egret中tree组件使用案例，包含（文本过多时，自动换行功能）

下面代码结合http://bbs.egret.com/forum.php?mod=viewthread&tid=19028&page=1#pid133680这篇文章，修改exml；

private creatTree(): void {
        var dp: egret.gui.ObjectCollection = new egret.gui.ObjectCollection();
        dp.source = { children: [{ dir: true,name: "TreeItem0",children: [{ name: "TreeItem00大娃娃吾问无为谓\r呜呜呜呜呜呜dawd" },
            { dir: true,name: "TreeItem01",children: [{ name: "TreeItem010" }] }] },
            { dir: true,name: "TreeItem1",children: [{ name: "TreeItem10" },{ name: "TreeItem11" }] },{ name: "TreeItem2" }] };

    //设置数据源的父子关系，这样才会缩进 
    egret.gui.ObjectCollection.assignParent(dp.source,"children","parent");

    //创建树 
    var tree: egret.gui.Tree = new egret.gui.Tree();
    tree.labelField = "name";
    tree.top = 20;
    tree.left = 20;
    tree.right = 20;
    tree.height = 300;
    tree.dataProvider = dp;
    tree.expandItem(dp.getItemAt(0),true);
    this.addChild(tree);

    // 还可以通过iconFunction，设置每一项前面显示的小图标：
    //           tree.iconFunction = this.iconFunc; 
    /*呈现项的icon筛选*/
}

private iconFunc(item: any): any {
    if(item.dir) return "tree_icon_dir_png";
    else return "tree_icon_file_png";
} </pre>







完整的项目案例：https://github.com/arvin0/EgretExamples/tree/master/GUI%20Tree