前言：合格的游戏界面（UI）打开关闭通常需要过渡性的动画，这里记录如何在通用egret,MVC框架中,笔记一中创建的scene里面，增加打开界面添加动画效果的功能,效果如图：
1.打开\src\example\module\base\BasePanelView.ts 修改继承限定，运行关闭界面时进行其他操作
找到最底下的这几行代码：
private closeBtnClickHandler(e:egret.TouchEvent):void{
App.ViewManager.closeView(this);
}把private这个关键字改成protected:
protected closeBtnClickHandler(e:egret.TouchEvent):void{
App.ViewManager.closeView(this);
}原则上，框架内的东西不能随意更改，就像房子可以装修打洞，但不能动横梁柱子什么的，会出问题。
这里把private换成protected主要是方便继承基本panel界面的UI可以在关闭时增加新的功能，比如播放动画效果。
BasePanelView.ts参考代码：
/**
* Created by egret on 15-1-7.
*/
class BasePanelView extends BaseEuiView {
public closeBtn:eui.Button;
public iconDisplay:eui.Image;
public button:eui.Image;
public contentGroup:eui.Group;
private _icon:string;
private _btn:string;
public constructor(controller:BaseController, parent:eui.Group) {
super(controller, parent);
this.skinName = "resource/skins/PanelSkin.exml";
}
public set icon(value:string){
this._icon = value;
if(this.iconDisplay){
this.iconDisplay.source = this._icon;
}
}
public get icon():string{
return this._icon;
}
public set btn(value:string){
this._btn = value;
if(this.button){
this.button.source = this._btn;
}
}
public get btn():string{
return this._btn;
}
/**
*对面板进行显示初始化，用于子类继承
*
*/
public initUI():void {
super.initUI();
this.closeBtn.addEventListener(egret.TouchEvent.TOUCH_END,this.closeBtnClickHandler,this);
}
/**
*对面板数据的初始化，用于子类继承
*
*/
public initData():void{
super.initData();
this.iconDisplay.source = this._icon;
this.button.source = this._btn;
}
protected closeBtnClickHandler(e:egret.TouchEvent):void{
App.ViewManager.closeView(this);
//App.ViewManager.open(ViewConst.Home);//rongqingmei
}
}2.打开\src\example\module\friend\FriendView.ts： 关闭界面时进行播放动画操作
添加上这几句代码：
protected closeBtnClickHandler(e: egret.TouchEvent): void {
App.ViewManager.playcloseView(2, this);
//GameDispatcher.getInstance().dispatchEvent(new egret.Event(EventName.MAINBAR_CLOSE));
//App.ViewManager.open(ViewConst.Home);//rongqingmei
}就是FriendView的界面在关闭时，会调用这里面的方法，这里是把基类的相应关闭按钮方法给重写了。
其中有一个App.ViewManager.playcloseView是接下来要写的播放动画的方法.
FriendView.ts参考代码：（出现错误的代码删除掉，是之后的笔记用到的东西）
/**
* Created by egret on 15-1-7.
*/
class FriendView extends BasePanelView {
public constructor(controller: BaseController, parent: eui.Group) {
super(controller, parent);
this.icon = "table_tittle"; //好友的图片
}
protected closeBtnClickHandler(e: egret.TouchEvent): void {
App.ViewManager.playcloseView(2, this);
GameDispatcher.getInstance().dispatchEvent(new egret.Event(EventName.MAINBAR_CLOSE));
//App.ViewManager.open(ViewConst.Home);//rongqingmei
}
}3.打开\src\example\module\demo\DemoView.ts 打开界面时进行动画操作
添加组件：
button: eui.ToggleButton;组件按钮的点击事件，在public initUI(): void 中添加：
this.button.addEventListener(egret.TouchEvent.TOUCH_TAP, this.buttonClickHandler, this);点击事件的函数：
private buttonClickHandler(e: egret.TouchEvent): void {
App.ViewManager.playopen(2, ViewConst.Friend);
}核心与第二步类似，就是点击按钮播放动画并打开函数，这个函数接下来的步骤会写。
DemoView.ts参考代码：（出现错误的代码删除掉，是之后的笔记用到的东西）
/**
* Created by egret on 15-1-6.
*/
class DemoView extends BaseEuiView {
public constructor($controller: BaseController, $parent: eui.Group) {
super($controller, $parent);
this.skinName = "resource/skins/DemoSkin.exml";
}
button: eui.ToggleButton;
//展开菜单
menuBtn: eui.Button;
maskRect: eui.Rect;
menu: Menu;
//hp,mp条
lowHpRect: eui.Rect;
fastHpRect: eui.Rect;
addHP: eui.Button;
downHP: eui.Button;
//this.dispatchEvent(daterEvent);
/**
*对面板进行显示初始化，用于子类继承
*
*/
public initUI(): void {
super.initUI();
this.button.addEventListener(egret.TouchEvent.TOUCH_TAP, this.buttonClickHandler, this);
this.menuBtn.addEventListener(egret.TouchEvent.TOUCH_TAP, this.menubuttonClickHandler, this);
this.addHP.addEventListener(egret.TouchEvent.TOUCH_TAP, this.addbuttonClickHandler, this);
this.downHP.addEventListener(egret.TouchEvent.TOUCH_TAP, this.downbuttonClickHandler, this);
GameDispatcher.getInstance().addEventListener(EventName.MAINBAR_CLOSE, this.restoreButton, this);//监听界面的关闭
//为左边的弹出菜单设定遮罩
this.menu.mask = this.maskRect;
//人物血条的变化
this.initHpBar();
}
private buttonClickHandler(e: egret.TouchEvent): void {
App.ViewManager.playopen(2, ViewConst.Friend);
}
/**左边中间的那个折叠菜单的按钮事件 */
private menubuttonClickHandler(e: egret.TouchEvent): void {
let tween;
let self = this;
if (self.menu.$visible) {
self.menuBtn.touchEnabled = false;//播放动画时不可再次按按钮
tween = egret.Tween.get(this.menu).to({ scaleX: 1.0, scaleY: 1.0, x: 100 }, 0).to({ scaleX: 1.0, scaleY: 1.0, x: -400 }, 460).call(function () { self.menu.$setVisible(false); self.menuBtn.touchEnabled = true; });
} else {
self.menu.$setVisible(true);
self.menuBtn.touchEnabled = false;//播放动画时不可再次按按钮
tween = egret.Tween.get(this.menu).to({ scaleX: 1.0, scaleY: 1.0, x: -400 }, 0).to({ scaleX: 1.0, scaleY: 1.0, x: 100 }, 460).call(function () { self.menuBtn.touchEnabled = true; });
}
}
//关闭窗口时候的按钮恢复状态
private restoreButton(): void {
console.log("restoreButton");
this.button.selected = false;
}
//初始化initHpBar;
private initHpBar():void{
this.updateHpBar(1);
}
private HpBarNumNow:number = 0;//HP栏目前显示的数值
private HpBarV:number = 0.2;//Hp扣除时衰减的速度
/**更新血条状态 */
private updateHpBar(NumUpdate: number): void { //需要更新成的数值
let self = this;
if (NumUpdate > self.HpBarNumNow) {//更新的数值大于目前的数值时的逻辑
let tween;
//第一个条同时进行缓慢增长,实心的那条
egret.Tween.removeTweens(self.fastHpRect);//播放前先清除之前的动画
let tempHpNum:number = self.fastHpRect.scaleX;//动画是从目前的长度开始进行
tween = egret.Tween.get(self.fastHpRect).to({ scaleX: tempHpNum }, 0).to({ scaleX: NumUpdate }, 1200).call(function () {
});
//第二个条同时进行缓慢增长
egret.Tween.removeTweens(self.lowHpRect);//播放前先清除之前的动画
tempHpNum = self.fastHpRect.scaleX;//动画是从目前的长度开始进行
tween = egret.Tween.get(self.lowHpRect).to({ scaleX: tempHpNum }, 0).to({ scaleX: NumUpdate }, 1200).call(function () {
});
self.HpBarNumNow = NumUpdate; //HP栏目前的数值进行更新
console.log("这是之前的HpBarNumNow，NumUpdate",self.HpBarNumNow,NumUpdate);
} else if(NumUpdate < self.HpBarNumNow){//更新的数值小于目前的数值时的逻辑
let tween;
let tempHpNum:number = self.lowHpRect.scaleX;//动画是从目前的长度开始进行
egret.Tween.removeTweens(self.lowHpRect);////播放动画前先清除之前的动画
let t:number = (NumUpdate - tempHpNum)/this.HpBarV * 1000;//根据衰减时间计算衰减速度
if(t < 0) t=-t; //取绝对值
tween = egret.Tween.get(self.lowHpRect).to({ scaleX: tempHpNum }, 0).to({ scaleX: NumUpdate }, t);
egret.Tween.removeTweens(self.fastHpRect);////瞬变前先清除之前的动画
self.fastHpRect.scaleX = NumUpdate; //血条减血时瞬变
self.HpBarNumNow = NumUpdate;
}
}
private tempnum = 1;
private addbuttonClickHandler(): void {
if ((this.tempnum + 0.2) <= 1.0) {
this.tempnum += 0.2;
}
this.updateHpBar(this.tempnum);
}
private downbuttonClickHandler(): void {
if ((this.tempnum - 0.2) >= 0) {
this.tempnum -= 0.2;
}
this.updateHpBar(this.tempnum);
}
}4.打开\src\core\mvc\ViewManager.ts 动画操作的具体函数代码
添加上以下三个函数：
/**
* 带动画开启面板
* @param key 面板唯一标识
* @param param 参数
*
*/
public playopen(playmode:number,key:number, ...param:any[]):IBaseView {
var view:IBaseView = this.getView(key);
if (view == null) {
Log.trace("UI_" + key + "不存在");
return;
}
if (view.isShow()) {
view.open.apply(view, param);
return view;
}
if (view.isInit()) {
view.addToParent();
view.open.apply(view, param);
}
else {
App.EasyLoading.showLoading();
view.loadResource(function () {
view.setVisible(false);
view.addToParent();
}.bind(this), function () {
view.initUI();
view.initData();
view.open.apply(view, param);
view.setVisible(true);
App.EasyLoading.hideLoading();
}.bind(this));
}
//动画,动画从零开始就会卡
let _tween;
switch(playmode){
//从小变大
case 1: _tween = egret.Tween.get(view).to( {scaleX: 0.3,scaleY: 0.3}, 0 ).to( {scaleX: 1.0,scaleY: 1.0}, 200 );break;
//逐渐显现
case 2: _tween = egret.Tween.get(view).to( {alpha:0.3,scaleX: 1.0,scaleY: 1.0}, 0 ).to( {alpha:1.0,scaleX: 1.0,scaleY: 1.0}, 200 );break;
default:break;
}
this._opens.push(key);
return view;
}
/**
* 带动画关闭面板
* @param playmode 动画播放形式
* @param key 面板唯一标识
* @param param 参数
*
*/
public playclose(playmode:number,key:number, ...param:any[]):void {
if (!this.isShow(key)) {
return;
}
var view:IBaseView = this.getView(key);
if (view == null) {
return;
}
var viewIndex = this._opens.indexOf(key);
if (viewIndex >= 0) {
this._opens.splice(viewIndex, 1);
}
//动画,动画从零开始就会卡
// console.log( "完成加载" )
let _tween;
switch(playmode){
//从小变大
case 1: _tween = egret.Tween.get(view).to( {scaleX: 1.0,scaleY: 1.0}, 0 ).to( {scaleX: 0.1,scaleY: 0.1}, 80 ).call( function(){ view.removeFromParent(); view.close.apply(view, param); } );break;
//逐渐显现
case 2: _tween = egret.Tween.get(view).to( {scaleX: 1.0,scaleY: 1.0,alpha:1.0}, 0 ).to( {scaleX: 1.0,scaleY: 1.0,alpha:0.1}, 80 ).call( function(){ view.removeFromParent(); view.close.apply(view, param); } );break;
default:break;
}
}
/**
* 带动画关闭面板
* @param view
* @param param
*/
public playcloseView(playmode:number,view:IBaseView, ...param:any[]):void {
var keys = Object.keys(this._views);
for (var i:number = 0, len = keys.length; i < len; i++) {
var key:number = parseInt(keys[i]);
if (this._views[key] == view) {
this.playclose(playmode,key, param);
return;
}
}
}其中的核心主要是在switch(playmode)中，根据要求播放相应动画，注意，对界面进行播放动画特别是缩放时，尽量避免从0开始变化，界面缩小到0的过程非常卡，等到0.2或者0.1时就让界面消失就可以避免卡顿。
ViewManager.ts 参考代码：
class ViewManager extends BaseClass {
/**
* 已注册的UI
*/
private _views:any;
/**
* 开启中UI
*/
private _opens:Array<number>;
/**
* 构造函数
*/
public constructor() {
super();
this._views = {};
this._opens = [];
}
/**
* 清空处理
*/
public clear():void {
this.closeAll();
this._views = {};
}
/**
* 面板注册
* @param key 面板唯一标识
* @param view 面板
*/
public register(key:number, view:IBaseView):void {
if (view == null) {
return;
}
if (this._views[key]) {
return;
}
this._views[key] = view;
}
/**
* 面板解除注册
* @param key
*/
public unregister(key:number):void {
if (!this._views[key]) {
return;
}
this._views[key] = null;
delete this._views[key];
}
/**
* 销毁一个面板
* @param key 唯一标识
* @param newView 新面板
*/
public destroy(key:number, newView:IBaseView = null):void {
var oldView:IBaseView = this.getView(key);
if (oldView) {
this.unregister(key);
oldView.destroy();
oldView = null;
}
this.register(key, newView);
}
/**
* 开启面板
* @param key 面板唯一标识
* @param param 参数
*
*/
public open(key:number, ...param:any[]):IBaseView {
var view:IBaseView = this.getView(key);
if (view == null) {
Log.trace("UI_" + key + "不存在");
return;
}
if (view.isShow()) {
view.open.apply(view, param);
return view;
}
if (view.isInit()) {
view.addToParent();
view.open.apply(view, param);
}
else {
App.EasyLoading.showLoading();
view.loadResource(function () {
view.setVisible(false);
view.addToParent();
}.bind(this), function () {
view.initUI();
view.initData();
view.open.apply(view, param);
view.setVisible(true);
App.EasyLoading.hideLoading();
}.bind(this));
}
this._opens.push(key);
return view;
}
/**
* 带动画开启面板
* @param key 面板唯一标识
* @param param 参数
*
*/
public playopen(playmode:number,key:number, ...param:any[]):IBaseView {
var view:IBaseView = this.getView(key);
if (view == null) {
Log.trace("UI_" + key + "不存在");
return;
}
if (view.isShow()) {
view.open.apply(view, param);
return view;
}
if (view.isInit()) {
view.addToParent();
view.open.apply(view, param);
}
else {
App.EasyLoading.showLoading();
view.loadResource(function () {
view.setVisible(false);
view.addToParent();
}.bind(this), function () {
view.initUI();
view.initData();
view.open.apply(view, param);
view.setVisible(true);
App.EasyLoading.hideLoading();
}.bind(this));
}
//动画,动画从零开始就会卡
let _tween;
switch(playmode){
//从小变大
case 1: _tween = egret.Tween.get(view).to( {scaleX: 0.3,scaleY: 0.3}, 0 ).to( {scaleX: 1.0,scaleY: 1.0}, 200 );break;
//逐渐显现
case 2: _tween = egret.Tween.get(view).to( {alpha:0.3,scaleX: 1.0,scaleY: 1.0}, 0 ).to( {alpha:1.0,scaleX: 1.0,scaleY: 1.0}, 200 );break;
default:break;
}
this._opens.push(key);
return view;
}
/**
* 关闭面板
* @param key 面板唯一标识
* @param param 参数
*
*/
public close(key:number, ...param:any[]):void {
if (!this.isShow(key)) {
return;
}
var view:IBaseView = this.getView(key);
if (view == null) {
return;
}
var viewIndex = this._opens.indexOf(key);
if (viewIndex >= 0) {
this._opens.splice(viewIndex, 1);
}
view.removeFromParent();
view.close.apply(view, param);
}
/**
* 带动画关闭面板
* @param playmode 动画播放形式
* @param key 面板唯一标识
* @param param 参数
*
*/
public playclose(playmode:number,key:number, ...param:any[]):void {
if (!this.isShow(key)) {
return;
}
var view:IBaseView = this.getView(key);
if (view == null) {
return;
}
var viewIndex = this._opens.indexOf(key);
if (viewIndex >= 0) {
this._opens.splice(viewIndex, 1);
}
//动画,动画从零开始就会卡
// console.log( "完成加载" )
let _tween;
switch(playmode){
//从小变大
case 1: _tween = egret.Tween.get(view).to( {scaleX: 1.0,scaleY: 1.0}, 0 ).to( {scaleX: 0.1,scaleY: 0.1}, 80 ).call( function(){ view.removeFromParent(); view.close.apply(view, param); } );break;
//逐渐显现
case 2: _tween = egret.Tween.get(view).to( {scaleX: 1.0,scaleY: 1.0,alpha:1.0}, 0 ).to( {scaleX: 1.0,scaleY: 1.0,alpha:0.1}, 80 ).call( function(){ view.removeFromParent(); view.close.apply(view, param); } );break;
default:break;
}
}
/**
* 带动画关闭面板
* @param view
* @param param
*/
public playcloseView(playmode:number,view:IBaseView, ...param:any[]):void {
var keys = Object.keys(this._views);
for (var i:number = 0, len = keys.length; i < len; i++) {
var key:number = parseInt(keys[i]);
if (this._views[key] == view) {
this.playclose(playmode,key, param);
return;
}
}
}
/**
* 关闭面板
* @param view
* @param param
*/
public closeView(view:IBaseView, ...param:any[]):void {
var keys = Object.keys(this._views);
for (var i:number = 0, len = keys.length; i < len; i++) {
var key:number = parseInt(keys[i]);
if (this._views[key] == view) {
this.close(key, param);
return;
}
}
}
/**
* 根据唯一标识获取一个UI对象
* @param key
* @returns {any}
*/
public getView(key:number):IBaseView {
return this._views[key];
}
/**
* 关闭所有开启中的UI
*/
public closeAll():void {
while (this._opens.length) {
this.close(this._opens[0]);
}
}
/**
* 当前ui打开数量
* @returns {number}
*/
public currOpenNum():number {
return this._opens.length;
}
/**
* 检测一个UI是否开启中
* @param key
* @returns {boolean}
*/
public isShow(key:number):boolean {
return this._opens.indexOf(key) != -1;
}
}
界面文件：\resource\skins\DemoSkin.exml 参考代码：
<?xml version="1.0" encoding="utf-8"?>
<e:Skin class="DemoSkin" width="650" height="1000" xmlns:e="http://ns.egret.com/eui" xmlns:w="http://ns.egret.com/wing" xmlns:ns1="*">
<e:Image width="362" height="48" x="19" y="232" anchorOffsetX="0" anchorOffsetY="0" source="table_cloud_top" fillMode="repeat" visible="false"/>
<e:Group width="450" height="108" anchorOffsetX="0" anchorOffsetY="0" horizontalCenter="0" bottom="0">
<e:Rect width="448" height="67" x="1.3199999999999932" y="42.24000000000001" fillColor="0xebfff8" anchorOffsetX="0" anchorOffsetY="0" scaleX="1" scaleY="1"/>
<e:Image width="449" height="41.99" x="449.20000000000005" y="50.24000000000001" anchorOffsetX="0" anchorOffsetY="0" source="table_cloud_top" fillMode="repeat" rotation="180.16" scaleX="1" scaleY="1"/>
<e:ToggleButton id="button" label="ToggleButton" x="45" y="32" anchorOffsetX="0" width="74" anchorOffsetY="0" height="75" skinName="MenuButtonSkin" scaleX="1" scaleY="1"/>
<e:ToggleButton id="button2" label="ToggleButton" x="140.76" y="32" anchorOffsetX="0" width="74" anchorOffsetY="0" height="75" skinName="MenuButtonSkin" scaleX="1" scaleY="1"/>
<e:ToggleButton id="button3" label="ToggleButton" x="237" y="32" anchorOffsetX="0" width="74" anchorOffsetY="0" height="75" skinName="MenuButtonSkin" scaleX="1" scaleY="1"/>
<e:ToggleButton id="button4" label="ToggleButton" x="335" y="32" anchorOffsetX="0" width="74" anchorOffsetY="0" height="75" skinName="MenuButtonSkin" scaleX="1" scaleY="1"/>
</e:Group>
<e:Group width="610.61" height="192.42" x="0" y="178.79" anchorOffsetX="0" anchorOffsetY="0">
<ns1:Menu id="menu" x="78" y="37.21000000000001" skinName="MenuSkin" scaleX="1" scaleY="1" visible="false"/>
<e:Rect id="maskRect" width="530.61" height="191.22" x="77.72" y="0" anchorOffsetX="0" anchorOffsetY="0" scaleX="1" scaleY="1"/>
<e:ToggleButton id="menuBtn" label="切换按钮" skinName="MenuButtonSkin" x="14" y="58.210000000000036" scaleX="1" scaleY="1"/>
</e:Group>
<e:Group width="481.82" height="162.12" x="268.09" y="0" anchorOffsetX="0" anchorOffsetY="0">
<e:Image width="354.76" height="130.62" x="17.36" y="18.78" anchorOffsetX="0" anchorOffsetY="0" source="menu_bg"/>
<e:Rect width="83.63" height="85.16" x="38.73" y="41.51" anchorOffsetX="0" anchorOffsetY="0" scaleX="1" scaleY="1" fillColor="0xffffff"/>
<e:Rect width="167" height="19" x="157.41" y="71.56" anchorOffsetX="0" anchorOffsetY="0" fillColor="0xffffff"/>
<e:Rect id="lowHpRect" width="167" height="19" x="157.41" y="71.56" anchorOffsetX="0" anchorOffsetY="0" fillColor="0xff0202"/>
<e:Rect id="fastHpRect" width="167" height="19" x="157.41" y="71.56" anchorOffsetX="0" anchorOffsetY="0" fillColor="0xff7a7a"/>
<e:Button id="addHP" label="+" x="175.24" y="105.67" anchorOffsetX="0" width="39" anchorOffsetY="0" height="38"/>
<e:Button id="downHP" label="-" x="240.91" y="107.67" anchorOffsetX="0" width="33" anchorOffsetY="0" height="34"/>
</e:Group>
</e:Skin>