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     【HarmonyOS Next】动画 原创
奥尼5354
 发布于 2025-3-10 22:19
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页面分类动画

显示动画
function animateTo(value: AnimateParam, event: () => void): void;
代码如下:(实现属性变化引发的动画)
@Entry
@Component
struct Animate_Page1 {
  @State boxWidth: number = 100;
  @State boxHeight: number = 100;
  @State flag: boolean = true;
  build() {
    Stack({ alignContent: Alignment.BottomEnd }) {
      Column() {
        Row() {
        }
        .width(this.boxWidth)
        .height(this.boxHeight)
        .backgroundColor(Color.Red)
      }
      .height('100%')
      .width('100%')
      .justifyContent(FlexAlign.Center)
      Button("动画")
        .width(50)
        .height(50)
        .margin(20)
        .onClick(() => {
          animateTo({
            duration: 1000 //动画时间
          }, () => {
            if (this.flag) {
              this.boxWidth = 240;
              this.boxHeight = 240;
            } else {
              this.boxWidth = 100;
              this.boxHeight = 100;
            }
            this.flag = !this.flag;
          })
        })
    }
    .width('100%')
  }
}
常见属性
- 
duration:动画执行时间
 - 
iterations:动画播放次数,-1表示无限次播放
 - 
curve:播放曲线
 - 
playMode:动画播放模式
 - 
delay:动画延迟播放时间
 
属性动画
使用animation属性去定义动画的属性,需要注意的点是,如果在animation方法后定义的属性,在改变时将不会触发动画。
@Entry
@Component
struct Animate_Page2 {
  @State boxWidth: number = 100;
  @State boxHeight: number = 100;
  @State flag: boolean = true;
  build() {
    Stack({ alignContent: Alignment.BottomEnd }) {
      Column() {
        Row() {
        }
        .width(this.boxWidth)
        .height(this.boxHeight)
        .backgroundColor(Color.Red)
        .animation({
          duration: 1000
        })
      }
      .height('100%')
      .width('100%')
      .justifyContent(FlexAlign.Center)
      Button("动画")
        .width(50)
        .height(50)
        .margin(20)
        .onClick(() => {
          if (this.flag) {
            this.boxWidth = 240;
            this.boxHeight = 240;
          } else {
            this.boxWidth = 100;
            this.boxHeight = 100;
          }
          this.flag = !this.flag;
        })
    }
    .width('100%')
  }
}
常见属性
- 
duration:动画执行时间
 - 
iterations:动画播放次数,-1表示无限次播放
 - 
curve:播放曲线
 - 
playMode:动画播放模式
 - 
delay:动画延迟播放时间
 
弹簧曲线动画(springCurve属性)
实现组件的左右抖动
import curves from '@ohos.curves';
@Entry
@Component
struct Animate_Page3 {
  @State message: string = '登录框';
  @State translateX: number = 0;
  @State translateY: number = 0;
  jumpWithSpeed(velocity: number) {
    this.translateX = -10;
    animateTo({
      duration: 2000,
      //速度(velocity)质量(mass)刚度(stiffness)阻尼(damping)
      curve: curves.springCurve(velocity, 1, 1, 1)
    }, () => {
      this.translateX = 0;
    })
  }
  build() {
    Column() {
      Row() {
        Text(this.message).fontSize(40).width('100%').textAlign(TextAlign.Center)
      }
      .width(200)
      .height(200)
      .backgroundColor(Color.Gray)
      .margin({
        top: 20,
        bottom: 50
      })
      .translate({
        x: this.translateX,
        y: this.translateY
      })
      Row() {
        Button("jump10").width(100).onClick(() => {
          this.jumpWithSpeed(10)
        })
        Button("jump200").width(100)
          .onClick(() => {
            this.jumpWithSpeed(200)
          })
      }.justifyContent(FlexAlign.SpaceAround)
      .width('100%')
    }
    .height('100%')
    .width('100%')
  }
}
路径动画(motionPath属性)
需要在改变的外层轮廓添加animation属性,才能实现。需要注意点坐标需要乘2.
@Entry
@Component
struct Animate_Page4 {
  @State message: string = 'Hello World';
  @State flag: boolean = true;
  build() {
    Column() {
      Row() {
        Text(this.message).fontSize(20).width('100%').textAlign(TextAlign.Center)
      }
      .width(100)
      .height(100)
      .backgroundColor(Color.Gray)
      .margin(10)
      .onClick(() => {
        this.flag = !this.flag;
      })
      .motionPath({
        path: "M start.x start.y L10 400 L400 400 Lend.x end.y",
        from: 0,
        to: 1,
        rotatable: false//控制组件是否沿运动方向旋转
      })
    }
    .height('100%')
    .width('100%')
    .alignItems(this.flag ? HorizontalAlign.Start : HorizontalAlign.End)
    .animation({
      duration: 2000
    })
  }
}
页面间动画-放大缩小视图
关键属性:sharedTransition属性
sharedTransition属性中的type类型包含Exchange和Static两种,详细简介如下图:

实现两个页面之间的图片放大缩小的方式跳转
Animate_Page5:
import router from '@ohos.router';
@Entry
@Component
struct Animate_Page5 {
  @State message: string = 'Hello World';
  build() {
    Column() {
      Image($r('app.media.app_icon'))
        .width(50)
        .height(50)
        .margin({
          top: 30,
          bottom: 30
        })
        .sharedTransition("icon1", {
          duration: 1000,
          type: SharedTransitionEffectType.Exchange
        })
      Button("点我跳转")
        .width(200)
        .fontSize(20)
        .fontColor(Color.White)
        .onClick((event: ClickEvent) => {
          router.pushUrl({
            url: "pages/Animate_Page5_Image"
          })
        })
    }
    .height('100%')
    .width('100%')
  }
}
Animate_Page5_Image:
import router from '@ohos.router';
@Entry
@Component
struct Animate_Page5_Image {
  @State message: string = 'Hello World';
  build() {
    Column() {
      Image($r('app.media.app_icon'))
        .width(50)
        .height(50)
        .onClick(() => {
          router.back();
        })
        .sharedTransition("icon1")
    }
    .height('100%')
    .width('100%')
    .justifyContent(FlexAlign.Center)
  }
}

页面转场动画
可以设置转场动画方向和透明度等属性
pageTransition() {
    //页面打开时候的动画
  PageTransitionEnter({})
    .onEnter((type: RouteType, progress: number) => {
    })
    //页面离开时候的动画
  PageTransitionExit({})
    .onExit((type: RouteType, progress: number) => {
    })
}
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