HarmonyOS 如何支持.9图

Image组件当前已支持点九图，可以通过设置resizable达到图片拉伸的效果 。

官网文档对应链接：

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-basic-components-image-V5#resizableoptions11

参考demo如下：

@Entry
@Component
struct ImageExample2 {
  @State show: Boolean = true
  @State top: number = 0
  @State bottom: number = 0
  @State left: number = 0
  @State right: number = 0
  @State fit: ImageFit = ImageFit.Contain
  @State w: number = 300
  @State h: number = 300

  build() {
    Column({ space: 10 }) {
      if (this.show) {
        Image($r('app.media.avatar'))// 具体的图片
          .width(this.w)
          .height(this.h)
          .borderRadius(4)
          .padding(10)
          .resizable({
            slice: {
              top: this.top,
              bottom: this.bottom,
              left: this.left,
              right: this.right
            }
          })
          .objectFit(this.fit)
          .backgroundColor(Color.Orange)
      }
      Row() {
        Button('add top to ' + this.top).fontSize(10)
          .onClick(() => {
            this.top += 2
          })
        Button('add bottom ' + this.bottom).fontSize(10)
          .onClick(() => {
            this.bottom += 2
          })
        Button('add left ' + this.left).fontSize(10)
          .onClick(() => {
            this.left += 2
          })
        Button('add right ' + this.right).fontSize(10)
          .onClick(() => {
            this.right += 2
          })
      }

      Row() {
        Button('reduce top to ' + this.top).fontSize(10)
          .onClick(() => {
            this.top -= 2
          })
        Button('reduce bottom ' + this.bottom).fontSize(10)
          .onClick(() => {
            this.bottom -= 2
          })
        Button('reduce left ' + this.left).fontSize(10)
          .onClick(() => {
            this.left -= 2
          })
        Button('reduce right ' + this.right).fontSize(10)
          .onClick(() => {
            this.right -= 2
          })
      }

      Row() {
        Button('add w').fontSize(10)
          .onClick(() => {
            this.w += 2
          })
        Button('add h').fontSize(10)
          .onClick(() => {
            this.h += 2
          })
      }

    }.width('100%').height('100%').backgroundColor(Color.Pink)
    .onClick(() => {
      this.show = !this.show
    })
  }
}