HarmonyOS 鸿蒙Next 5.0 arkts怎么屏幕截图

// xxx.ets import window from ‘@ohos.window’; import photoAccessHelper from ‘@ohos.file.photoAccessHelper’; import fileIo from ‘@ohos.file.fs’; import { image } from ‘@kit.ImageKit’;

@Entry @Component struct SnapshotExample { @State image: PixelMap | ResourceStr = $r(‘app.media.icon’);

build() { Column() { Text(‘截图测试’) .fontColor(Color.Blue) .fontSize(20) Image(this.image) .width(‘50%’) .height(‘50%’) .objectFit(ImageFit.Contain) .margin({top:20,bottom:20}) .backgroundColor(Color.Gray)

  SaveButton({ text: SaveDescription.SAVE_IMAGE, icon: SaveIconStyle.LINES })
    .onClick(async (event: ClickEvent, result: SaveButtonOnClickResult) => {
      if (result == SaveButtonOnClickResult.SUCCESS) {

        let myWindow = await window.getLastWindow(getContext(this));
        let snapshot = await myWindow.snapshot();

        try {
          const context = getContext(this);
          let helper = photoAccessHelper.getPhotoAccessHelper(context);
          // onClick触发后10秒内通过createAsset接口创建图片文件，10秒后createAsset权限收回。
          let uri = await helper.createAsset(photoAccessHelper.PhotoType.IMAGE, 'jpg');
          // 使用uri打开文件，可以持续写入内容，写入过程不受时间限制
          let file = fileIo.openSync(uri, fileIo.OpenMode.READ_WRITE | fileIo.OpenMode.CREATE);

          let array = await this.pixelMapToArray(snapshot);
          // 写入文件
          fileIo.writeSync(file.fd, array);
          // 关闭文件
          fileIo.closeSync(file);
        } catch (error) {
          console.error(" error is " + JSON.stringify(error));
        }
      }
    })
}
.width('100%')
.justifyContent(FlexAlign.Center)
.height('100%')
.backgroundColor(0xDCDCDC)
.padding({ top: 5 })

}

async pixelMapToArray(pixelMap: PixelMap) { const imageImagePacker: image.ImagePacker = image.createImagePacker() let packOpts: image.PackingOption = { format: “image/jpeg”, quality: 100 }

return await imageImagePacker.packing(pixelMap, packOpts)

} }