From b00fca281d3d04fd67765ff8073389f84f1e5d95 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E5=8B=A4=E6=B0=91?= <xuqinmin@bjca.org.cn>
Date: Sat, 9 Nov 2024 18:56:59 +0800
Subject: [PATCH] =?UTF-8?q?feat(ContactSupportView):=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E4=BF=9D=E5=AD=98=E5=9B=BE=E7=89=87=E5=88=B0=E6=9C=AC=E5=9C=B0?=
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- 在 ContactSupportView 组件中添加保存图片按钮
- 实现保存图片到本地的逻辑
- 更新权限请求，添加对相册的访问权限
- 优化界面布局，调整图片显示和按钮样式
---
 src/main/ets/utils/FileHelper.ets | 37 +++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/main/ets/utils/FileHelper.ets b/src/main/ets/utils/FileHelper.ets
index bc26baa..991133a 100644
--- a/src/main/ets/utils/FileHelper.ets
+++ b/src/main/ets/utils/FileHelper.ets
@@ -6,6 +6,9 @@ import { hilog } from '@kit.PerformanceAnalysisKit';
 import { image } from '@kit.ImageKit';
 import { buffer } from '@kit.ArkTS';
 import { LogHelper } from './LogHelper';
+import { ToolsHelper } from './ToolsHelper';
+import { photoAccessHelper } from '@kit.MediaLibraryKit';
+import { GlobalContext } from '../ContextConfig';
 
 export class FileHelper {
   private constructor() {
@@ -311,6 +314,11 @@ export class FileHelper {
     return fs.accessSync(path);
   }
 
+  /**
+   * 图片转base64
+   * @param photoUri
+   * @returns
+   */
   static BmpToBase64(photoUri: string): Promise<string> {
     const imagePackerApi: image.ImagePacker = image.createImagePacker();
     const packOpts: image.PackingOption = { format: 'image/jpeg', quality: 100 };
@@ -336,6 +344,35 @@ export class FileHelper {
     })
   }
 
+  /**
+   * 保存图片到相册，需要注意权限
+   * @param pixmap
+   */
+  static async saveImage(pixmap: image.PixelMap) {
+    let imageBuffer: ArrayBuffer = new ArrayBuffer(1)
+    try {
+      imageBuffer = await image.createImagePacker().packing(pixmap, { format: "image/png", quality: 100 })
+    } catch (err) {
+      ToolsHelper.showMessage('保存失败')
+      console.error(`Invoke packingPixelMap2Jpg failed, err: ${JSON.stringify(err)}`)
+    }
+
+    const uri = await photoAccessHelper.getPhotoAccessHelper(GlobalContext.getContext())
+      .createAsset(photoAccessHelper.PhotoType.IMAGE, 'png')
+
+    fs.open(uri, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE)
+      .then(async (file) => {
+        try {
+          await fs.write(file.fd, imageBuffer)
+          ToolsHelper.showMessage('保存成功')
+        } finally {
+          await fs.close(file.fd) // 确保文件关闭
+        }
+      }).catch(() => {
+      ToolsHelper.showMessage('保存失败')
+    })
+  }
+
   /**
    * 打开文件，支持使用URI打开文件。使用Promise异步回调。
    * @param path string 文件的应用沙箱路径或URI。