update zh-cn/application-dev/media/image-pixelmap-operation.md.

Signed-off-by: N 刘关鹏 <liuguanpeng1@huawei.com>

update zh-cn/application-dev/media/image-pixelmap-operation.md.
Signed-off-by: N 刘关鹏 <liuguanpeng1@huawei.com>
c2d6bb9d · 刘关鹏 · Gitee · 4f166235 · c2d6bb9d
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zh-cn/application-dev/media/image-pixelmap-operation.md zh-cn/application-dev/media/image-pixelmap-operation.md +1 -0

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@@ -27,6 +27,7 @@
 3. 读取并修改目标区域像素数据，写回原图。
     
   ```ts
+   import {BusinessError} from '@ohos.base'
   // 场景一：将读取的整张图像像素数据结果写入ArrayBuffer中
   const readBuffer = new ArrayBuffer(pixelBytesNumber);
   pixelMap.readPixelsToBuffer(readBuffer).then(() => {