案例源码:
Zodiac_cards: 鸿蒙生肖抽奖卡片
效果演示
初始布局
1. Badge 角标组件
此处为语雀内容卡片,点击链接查看:https://www.yuque.com/kevin-nzthp/lvl039/rccg0o4pkp3v6nua
2. Grid 布局
// 定义接口
interface ImageCount {url: ResourceStr,count: number
}@Entry@Componentstruct Index {@State images: ImageCount[] = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 1 },{ url: '/images/bg_02.png', count: 2 },{ url: '/images/bg_03.png', count: 3 },{ url: '/images/bg_04.png', count: 4 },{ url: '/images/bg_05.png', count: 5 },]// 控制遮罩的显隐@State maskOpacity: number = 0 // 透明度@State maskIndex: number = -1; // 显示层级// 控制图片的缩放@State maskImgX: number = 0 // 水平缩放比@State maskImgY: number = 0 // 垂直缩放比build() {Stack() {Column() {Grid() {ForEach(this.images, (item: ImageCount) => {GridItem() {Badge({count: item.count,position: BadgePosition.RightTop,style: {badgeSize: this.maskImgX,fontSize: this.maskImgY}}) {Image(item.url).width(80)}}})}.rowsTemplate('1fr 1fr').columnsTemplate('1fr 1fr 1fr').width('100%').height(300).margin({ top: 100 })Button('立即抽卡').width(200).backgroundColor('#ed5b8c').margin({ top: 50 }).onClick(()=>{// 点击时,修改遮罩参数,让遮罩显示this.maskOpacity = 1this.maskIndex = 99// 图片需要缩放this.maskImgX = 1this.maskImgY = 1})}.width('100%').height('100%').backgroundColor(Color.Pink)// 抽卡遮盖层Column({space: 30}) {Text('获得生肖卡').fontColor('#f5ebcf').fontSize(25).fontWeight(FontWeight.Bold)Image('/images/img_00.png').width(200)//控制元素的缩放.scale({x: this.maskImgX,y: this.maskImgY})Button('开心收下').width(200).height(50).backgroundColor(Color.Transparent).border({ width: 2 ,color:'#fff9e0'}).onClick(()=>{// 控制弹层显隐this.maskOpacity = 0this.maskIndex = -1// 重置缩放比为0,便于下一次进行缩放this.maskImgX = 0this.maskImgY = 0})}.justifyContent(FlexAlign.Center).width('100%').height('100%').backgroundColor('#cc000000')// 设置透明度.opacity(this.maskOpacity).zIndex(this.maskIndex)// 动画 animation 当我们元素有状态的改变,可以添加animation做动画.animation({duration: 500})}}}
抽卡遮罩层
静态页面
点击立即抽卡按钮后,会进入遮罩层,显示抽取的卡片,此时抽卡的页面转换为背景图,使用层叠布局
// 定义图片接口
interface ImageCount {url: ResourceStr,count: number
}@Entry@Componentstruct Index {// 定义图片渲染数组@State images: ImageCount[] = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 1 },{ url: '/images/bg_02.png', count: 2 },{ url: '/images/bg_03.png', count: 3 },{ url: '/images/bg_04.png', count: 4 },{ url: '/images/bg_05.png', count: 5 },]build() {Stack(){Column() {Grid() {ForEach(this.images, (item: ImageCount) => {GridItem() {Badge({count: item.count,position: BadgePosition.RightTop,style: {fontSize: 12,badgeSize: 16}}) {Image(item.url).width(80)}}})}.rowsTemplate('1fr 1fr').columnsTemplate('1fr 1fr 1fr').height(300).margin({top: 50, bottom: 50})// .backgroundColor(Color.Pink)Button('立即抽卡').width(200).backgroundColor('#ED5B8C')}Column({space: 30}){Text('获得生肖卡').fontColor('#F3EAD3').fontWeight(700).fontSize(24)Image('/images/img_00.png').width(200)Button('开心收下').width(200).border({width: 2,color:'#9F9C90',}).backgroundColor(Color.Transparent)}.backgroundColor('#cc000000').width('100%').height('100%').justifyContent(FlexAlign.Center)}}}
抽卡遮罩层- 显隐效果控制
添加状态变量控制遮罩层 Z 轴 和 不透明度的数值.
当点击 “立即抽卡”按钮时,显示遮罩层。(此时不能隐藏)
当点击 遮罩层“开心收下”按钮时,隐藏遮罩层。
添加动画
添加遮罩层图片的缩放
效果
// 定义图片接口
interface ImageCount {url: ResourceStr,count: number
}@Entry@Componentstruct Index {// 定义图片渲染数组@State images: ImageCount[] = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 1 },{ url: '/images/bg_02.png', count: 2 },{ url: '/images/bg_03.png', count: 3 },{ url: '/images/bg_04.png', count: 4 },{ url: '/images/bg_05.png', count: 5 },]// 控制遮罩的显隐@State maskOpacity: number = 0 // 透明度@State maskIndex: number = -1; // 显示层级// 控制遮罩层图片的缩放@State maskImgScaleX: number = 0 // 水平缩放比@State maskImgScaleY: number = 0 // 垂直缩放比// 获取图片build() {Stack() {// 抽卡层Column() {Grid() {ForEach(this.images, (item: ImageCount) => {GridItem() {Badge({count: item.count,position: BadgePosition.RightTop,style: {fontSize: 12,badgeSize: 16}}) {Image(item.url).width(80)}}})}.rowsTemplate('1fr 1fr').columnsTemplate('1fr 1fr 1fr').height(300).margin({ top: 50, bottom: 50 })// .backgroundColor(Color.Pink)Button('立即抽卡').width(200).backgroundColor('#ED5B8C').onClick(() => {// 点击时,修改遮罩参数,让遮罩显示this.maskOpacity = 1this.maskIndex = 99// 点击时修改遮罩层图片的缩放比this.maskImgScaleX = 1this.maskImgScaleY = 1})}// 遮罩层Column({ space: 30 }) {Text('获得生肖卡').fontColor('#F3EAD3').fontWeight(700).fontSize(24)Image('/images/img_00.png').width(200).scale({//控制图片的缩放x: this.maskImgScaleX,y: this.maskImgScaleY}).animation({// 动画duration: 500})Button('开心收下').width(200).border({width: 2,color: '#9F9C90',}).backgroundColor(Color.Transparent).onClick(() => {// 点击时,修改遮罩参数,让遮罩隐藏this.maskOpacity = 0this.maskIndex = -1// // 点击时修改遮罩层图片的缩放比为1:1this.maskImgScaleX = 0this.maskImgScaleY = 0})}.zIndex(this.maskIndex).opacity(this.maskOpacity).backgroundColor('#cc000000').width('100%').height('100%').justifyContent(FlexAlign.Center)}}}
随机卡片
效果演示:
要获得 0-5 的整数索引,随机抽取卡片
此时可以获取随机卡片,接下来要将抽到的随机卡片显示在主页面并右上角角标显示。
// 定义图片接口
interface ImageCount {url: ResourceStr,count: number
}@Entry@Componentstruct Index {// 定义图片渲染数组@State images: ImageCount[] = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 0 },{ url: '/images/bg_02.png', count: 0 },{ url: '/images/bg_03.png', count: 0 },{ url: '/images/bg_04.png', count: 0 },{ url: '/images/bg_05.png', count: 0 },]// 控制遮罩的显隐@State maskOpacity: number = 0 // 透明度@State maskIndex: number = -1; // 显示层级// 控制遮罩层图片的缩放@State maskImgScaleX: number = 0 // 水平缩放比@State maskImgScaleY: number = 0 // 垂直缩放比// 获取遮罩层选择的图片Index@State maskImgIndex: number = 0build() {Stack() {// 抽卡层Column() {Grid() {ForEach(this.images, (item: ImageCount) => {GridItem() {Badge({count: item.count,position: BadgePosition.RightTop,style: {fontSize: 12,badgeSize: 16}}) {Image(item.url).width(80)}}})}.rowsTemplate('1fr 1fr').columnsTemplate('1fr 1fr 1fr').height(300).margin({ top: 50, bottom: 50 })// .backgroundColor(Color.Pink)Button('立即抽卡').width(200).backgroundColor('#ED5B8C').onClick(() => {// 点击时,修改遮罩参数,让遮罩显示this.maskOpacity = 1this.maskIndex = 99// 点击时修改遮罩层图片的缩放比this.maskImgScaleX = 1this.maskImgScaleY = 1// // 随机获取图片的Indexthis.maskImgIndex = Math.floor(Math.random() * 6)})}// 遮罩层Column({ space: 30 }) {Text('获得生肖卡').fontColor('#F3EAD3').fontWeight(700).fontSize(24)Image(`/images/img_0${this.maskImgIndex}.png`).width(200).scale({//控制图片的缩放x: this.maskImgScaleX,y: this.maskImgScaleY}).animation({// 动画duration: 500})Button('开心收下').width(200).border({width: 2,color: '#9F9C90',}).backgroundColor(Color.Transparent).onClick(() => {// 点击时,修改遮罩参数,让遮罩隐藏this.maskOpacity = 0this.maskIndex = -1// // 点击时修改遮罩层图片的缩放比为1:1this.maskImgScaleX = 0this.maskImgScaleY = 0// 开心收下this.images[this.maskImgIndex] = {url: `/images/img_0${this.maskImgIndex}.png`,count: this.images[this.maskImgIndex].count + 1}})}.zIndex(this.maskIndex).opacity(this.maskOpacity).backgroundColor('#cc000000').width('100%').height('100%').justifyContent(FlexAlign.Center)}}
}
抽大奖遮罩层
静态页面
// 定义图片接口
interface ImageCount {url: ResourceStr,count: number
}@Entry
@Component
struct Index {// 定义图片渲染数组@State images: ImageCount[] = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 0 },{ url: '/images/bg_02.png', count: 0 },{ url: '/images/bg_03.png', count: 0 },{ url: '/images/bg_04.png', count: 0 },{ url: '/images/bg_05.png', count: 0 },]// 控制遮罩的显隐@State maskOpacity: number = 0 // 透明度@State maskIndex: number = -1; // 显示层级// 控制遮罩层图片的缩放@State maskImgScaleX: number = 0 // 水平缩放比@State maskImgScaleY: number = 0 // 垂直缩放比// 获取遮罩层选择的图片Index@State maskImgIndex: number = 0build() {Stack() {// 抽卡层Column() {Grid() {ForEach(this.images, (item: ImageCount) => {GridItem() {Badge({count: item.count,position: BadgePosition.RightTop,style: {fontSize: 12,badgeSize: 16}}) {Image(item.url).width(80)}}})}.rowsTemplate('1fr 1fr').columnsTemplate('1fr 1fr 1fr').height(300).margin({ top: 50, bottom: 50 })// .backgroundColor(Color.Pink)Button('立即抽卡').width(200).backgroundColor('#ED5B8C').onClick(() => {// 点击时,修改遮罩参数,让遮罩显示this.maskOpacity = 1this.maskIndex = 99// 点击时修改遮罩层图片的缩放比this.maskImgScaleX = 1this.maskImgScaleY = 1// // 随机获取图片的Indexthis.maskImgIndex = Math.floor(Math.random() * 6)})}// 遮罩层Column({ space: 30 }) {Text('获得生肖卡').fontColor('#F3EAD3').fontWeight(700).fontSize(24)Image(`/images/img_0${this.maskImgIndex}.png`).width(200).scale({//控制图片的缩放x: this.maskImgScaleX,y: this.maskImgScaleY}).animation({// 动画duration: 500})Button('开心收下').width(200).border({width: 2,color: '#9F9C90',}).backgroundColor(Color.Transparent).onClick(() => {// 点击时,修改遮罩参数,让遮罩隐藏this.maskOpacity = 0this.maskIndex = -1// // 点击时修改遮罩层图片的缩放比为1:1this.maskImgScaleX = 0this.maskImgScaleY = 0// 开心收下this.images[this.maskImgIndex] = {url: `/images/img_0${this.maskImgIndex}.png`,count: this.images[this.maskImgIndex].count + 1}})}.zIndex(this.maskIndex).opacity(this.maskOpacity).backgroundColor('#cc000000').width('100%').height('100%').justifyContent(FlexAlign.Center)// 抽大奖遮罩层Column({space: 30}) {Text('恭喜获得手机一部').fontColor('#E4DDC7').fontWeight(700).fontSize(25)Image('/images/hw.png').width(300)Button('再来一次').width(200).height(50).border({width: 2,color: '#E4DDC7'}).backgroundColor(Color.Transparent)}.justifyContent(FlexAlign.Center).width('100%').height('100%').backgroundColor('#cc000000')}}
}
抽大奖遮罩层的显隐
前提:
六张卡片集齐,显示 --- 中大奖页面
默认为 false,不显示此抽大奖遮罩层
判断数组项的count, 是否都大于0, 只能有一个等于0,就意味着没及其
最终效果演示
随机奖品 & 再来一次
奖品随机抽 -》准备一个奖品数组, Math
再来一次 -》重置数据
奖品随机抽
准备奖品数组,默认抽中的奖品为空
准备随机数
在“”开心收下“”按钮下,判断是否中奖,如果中奖了,准备抽奖。
效果:
再来一次
将数据重置
效果演示:
完整代码:
import { trustedAppService } from '@kit.DeviceSecurityKit';// 定义图片接口
interface ImageCount {url: ResourceStr,count: number
}@Entry@Componentstruct Index {// 定义图片渲染数组@State images: ImageCount[] = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 0 },{ url: '/images/bg_02.png', count: 0 },{ url: '/images/bg_03.png', count: 0 },{ url: '/images/bg_04.png', count: 0 },{ url: '/images/bg_05.png', count: 0 },]// 奖品池@State prizePool: string[] = ['/images/pg.png','/images/hw.png','/images/xm.png']//抽中的奖品@State prize: string = '' // 默认没中奖// 控制遮罩的显隐@State maskOpacity: number = 0 // 透明度@State maskIndex: number = -1; // 显示层级// 控制遮罩层图片的缩放@State maskImgScaleX: number = 0 // 水平缩放比@State maskImgScaleY: number = 0 // 垂直缩放比// 获取遮罩层选择的图片Index@State maskImgIndex: number = 0// 控制中大奖的显隐@State isGet: boolean = false // 中大奖显隐build() {Stack() {// 抽卡层Column() {Grid() {ForEach(this.images, (item: ImageCount) => {GridItem() {Badge({count: item.count,position: BadgePosition.RightTop,style: {fontSize: 12,badgeSize: 16}}) {Image(item.url).width(80)}}})}.rowsTemplate('1fr 1fr').columnsTemplate('1fr 1fr 1fr').height(300).margin({ top: 50, bottom: 50 })// .backgroundColor(Color.Pink)Button('立即抽卡').width(200).backgroundColor('#ED5B8C').onClick(() => {// 点击时,修改遮罩参数,让遮罩显示this.maskOpacity = 1this.maskIndex = 99// 点击时修改遮罩层图片的缩放比this.maskImgScaleX = 1this.maskImgScaleY = 1// // 随机获取图片的Indexthis.maskImgIndex = Math.floor(Math.random() * 6)})}// 遮罩层Column({ space: 30 }) {Text('获得生肖卡').fontColor('#F3EAD3').fontWeight(700).fontSize(24)Image(`/images/img_0${this.maskImgIndex}.png`).width(200).scale({//控制图片的缩放x: this.maskImgScaleX,y: this.maskImgScaleY}).animation({// 动画duration: 500})Button('开心收下').width(200).border({width: 2,color: '#9F9C90',}).backgroundColor(Color.Transparent).onClick(() => {// 点击时,修改遮罩参数,让遮罩隐藏this.maskOpacity = 0this.maskIndex = -1// // 点击时修改遮罩层图片的缩放比为1:1this.maskImgScaleX = 0this.maskImgScaleY = 0// 开心收下this.images[this.maskImgIndex] = {url: `/images/img_0${this.maskImgIndex}.png`,count: this.images[this.maskImgIndex].count + 1}// 每次收完,要进行简单检索,判断是否集齐// 需求:判断数组项的count, 是否都大于0, 只能有一个等于0,就意味着没及其let flag: boolean = true // 假设集齐// 验证是否集齐for (let item of this.images) {if (item.count === 0) {flag = false // 没集齐break; // 只要没集齐,便可退出循环}}this.isGet = flagif (flag) {let randIndex: number = Math.floor(Math.random() * 3)this.prize = this.prizePool[randIndex]}})}.zIndex(this.maskIndex).opacity(this.maskOpacity).backgroundColor('#cc000000').width('100%').height('100%').justifyContent(FlexAlign.Center)// 抽大奖遮罩层if (this.isGet) {Column({ space: 30 }) {Text('恭喜获得手机一部').fontColor('#E4DDC7').fontWeight(700).fontSize(25)Image(this.prize).width(300)Button('再来一次').width(200).height(50).border({width: 2,color: '#E4DDC7'}).backgroundColor(Color.Transparent).onClick(() => {this.isGet = falsethis.prize = ''this.images = [{ url: '/images/bg_00.png', count: 0 },{ url: '/images/bg_01.png', count: 0 },{ url: '/images/bg_02.png', count: 0 },{ url: '/images/bg_03.png', count: 0 },{ url: '/images/bg_04.png', count: 0 },{ url: '/images/bg_05.png', count: 0 },]})}.justifyContent(FlexAlign.Center).width('100%').height('100%').backgroundColor('#cc000000')}}}
}