在Gui中对Button换皮相当的给力:

Gui.Button.skinName = new egret.gui.ButtonSkin(normal_resource, up_resource , disable_resource);

但是在EUI中没有ButtonSkin类.所以找到了其他方法.

我用三种按钮进行测试 : 1,有自定义皮肤的按钮 2,没有自定义皮肤的按钮(三种状态都有resource图片) , 3,new的Button

测试View:

一 : 自定义皮肤情况

①,自定义皮肤 : AonauflyButton.exml

<?xml version="1.0" encoding="utf-8"?>
<e:Skin class="skins.AonauflyButton"  states="up,down,disabled" width="75" height="75" xmlns:e="http://ns.egret.com/eui"><e:Image width="100%" height="100%" scale9Grid="1,3,8,8" alpha.disabled="0.5"source="变强01_png"source.down="橙色小按钮_png"source.disabled="蓝色小按钮_png"/><e:Label id="labelDisplay" top="8" bottom="8" left="8" right="8"size="20"textColor="0xFFFFFF" verticalAlign="middle" textAlign="center"/><e:Image id="iconDisplay" horizontalCenter="0" verticalCenter="0"/>
</e:Skin>

②,现在一个ButtonDemo.exml用于显示如上图.建一个Button,设置他的皮肤为我们的自定义皮肤

命名 : btn_demo

二 : 使用默认Button(三种状态都有resource图片)

命名 : btn_demo2

三 : 自定义一个Button , 命名 : $btn_demo3

代码如下:

module app {export class ButtonDemo extends eui.Component implements eui.UIComponent {private btn_demo : eui.Button;private btn_demo2 : eui.Button;private $btn_demo3 : eui.Button;public constructor() {super();this.skinName = "resource/eui_skins/ButtonDemo.exml";}private handlerListener( isAdd : boolean ) : void{this.touchEnabled = isAdd;if( isAdd ){this.addEventListener( egret.TouchEvent.TOUCH_TAP , this.onclick , this );}else{this.removeEventListener( egret.TouchEvent.TOUCH_TAP , this.onclick , this );}}private onclick( $e : egret.TouchEvent ) : void{this.btn_demo.enabled = !this.btn_demo.enabled;this.btn_demo2.enabled = !this.btn_demo2.enabled;this.$btn_demo3.enabled = !this.$btn_demo3.enabled;}protected childrenCreated():void{super.childrenCreated();this.handlerListener(true);this.btn_demo.label="第一种情况";this.btn_demo.icon = RES.getRes("button_down_png");this.baseChildren4BTN(this.btn_demo);this.changeChildren4BTN( this.btn_demo );egret.log("===== 第二种情况 =====");this.baseChildren4BTN( this.btn_demo2 );this.changeChildren4BTN( this.btn_demo2 );egret.log("===== 第三种情况 =====");this.$btn_demo3 = new eui.Button();this.$btn_demo3.label = "第三种情况";this.$btn_demo3.x = this.$btn_demo3.y = 250;this.addChild( this.$btn_demo3 );this.baseChildren4BTN( this.$btn_demo3 );this.changeChildren4BTN( this.$btn_demo3 );}private baseChildren4BTN(btn : eui.Button) : void{let $img2Btn_normal : eui.Image = <eui.Image>btn.getChildAt(0);egret.log(" 常态 img 0 :" + $img2Btn_normal.source);// 改变常态img( 成功 )// $img2Btn_normal.source = RES.getRes("蓝色小按钮_png");let $label2Btn : eui.Label = <eui.Label>btn.getChildAt(1);egret.log(" 文本 1 :" + $label2Btn.text);if( btn.numChildren >= 3 ){let $icon2Btn : eui.Image = <eui.Image>btn.getChildAt(2);if( $icon2Btn != null && $icon2Btn.source != null)egret.log("icon 2 :" + $icon2Btn.source.toString());}}private changeChildren4BTN(btn : eui.Button) : void{if( btn.skin != null && btn.skin.states != null){let arr2States : eui.State[] = btn.skin.states;let target2State : eui.State = null;//up - 状态target2State = arr2States[1];let property2up: eui.SetProperty = <eui.SetProperty>target2State.overrides[ target2State.overrides.length -1];if( property2up.name == "source" ){egret.log("up : value ->" + property2up.value );property2up.value = RES.getRes("蓝色小按钮_png");}//disabled 状态target2State = arr2States[2];let property2d: eui.SetProperty = <eui.SetProperty>target2State.overrides[ target2State.overrides.length -1];if( property2d.name == "source" ){egret.log("--改变图片资源--");egret.log("disabled : value ->" + property2d.value );property2d.value = RES.getRes("radiobutton_select_up_png");}else if( property2d.name == "alpha" ){egret.log("--改变图片透明度--");property2d.value = 0.3;//改变透明度}}}}
}

要更改normal :

要更改 up , disable :(可以同时有alpha和source , 可以同时得修改他们)

//******************************************************************************************************************

补充

public static setBtnSkin(btn: eui.Button, upImg, downImg, enableImg = null): void {if (btn.skin.states[0].overrides[0]["value"] == upImg && btn.skin.states[1].overrides[0]["value"] == downImg && btn.skin.states[2].overrides[0]["value"] == enableImg)return;btn.skin.states[1].overrides[0]["value"] = downImg;if (btn.enabled)btn.skin.states[2].overrides[0]["value"] = btn.skin.states[0].overrides[0]["value"];elsebtn.skin.states[0].overrides[0]["value"] = btn.skin.states[2].overrides[0]["value"]btn.enabled = !btn.enabled;DelayCall.call(1, EuiUtil.releaseBtn, EuiUtil, [btn, !btn.enabled, upImg, enableImg == null ? upImg : enableImg])}private static releaseBtn(btn: eui.Button, flag: boolean, upimg: string, disimg: string) {btn.skin.states[0].overrides[0]["value"] = upimg;btn.skin.states[2].overrides[0]["value"] = disimg;btn.enabled = flag;}