图片下载模块

@@ -7,10 +7,14 @@ import { photoAccessHelper } from '@kit.MediaLibraryKit';
 import fs from '@ohos.file.fs';
 
 const PERMISSIONS: Array<Permissions> = [
-  'ohos.permission.READ_MEDIA',
-  'ohos.permission.WRITE_MEDIA'
+  'ohos.permission.READ_IMAGEVIDEO',
+  'ohos.permission.WRITE_IMAGEVIDEO'
 ];
 
+/*
+ * saveButton参考文档
+ * https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/savebutton-0000001820999677
+ * */
 @Component
 export struct ImageDownloadComponent {
   @State image: PixelMap | undefined = undefined;
@@ -20,12 +24,8 @@ export struct ImageDownloadComponent {
 
   build() {
     Column() {
-      Image($r('app.media.icon_arrow_left_white'))
-        .width(24)
-        .height(24)
-        .aspectRatio(1)
-        .interpolation(ImageInterpolation.High)
-        .rotate({ angle: -90 })
+      SaveButton({ icon: SaveIconStyle.LINES })
+        .iconColor(Color.White)
         .onClick(async () => {
           console.info(`cj2024 onClick ${this.imageBuffer}`)
           if (this.imageBuffer !== undefined) {