System.UnauthorizedAccessException: Access to the path "/storage/sdcard0/DCIM/ecec3402-d0b0-41ab-8da0-8dc18c7e7d07.jpg" is denied.

图片保存报错，

在 AndroidManifest.xml 文件中 添加下面两句代码，给文件夹读写权限

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />