Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied)

来源：互联网发布：目标检测知乎编辑：程序博客网时间：2024/05/17 01:29

在API23+以上，不止要在AndroidManifest.xml里面添加权限

1 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />2 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

还要在JAVA代码中请求权限：

 1     // Storage Permissions 2     private static final int REQUEST_EXTERNAL_STORAGE = 1; 3     private static String[] PERMISSIONS_STORAGE = { 4             Manifest.permission.READ_EXTERNAL_STORAGE, 5             Manifest.permission.WRITE_EXTERNAL_STORAGE }; 6  7     /** 8      * Checks if the app has permission to write to device storage 9      * 10      * If the app does not has permission then the user will be prompted to11      * grant permissions12      * 13      * @param activity14      */15     public static void verifyStoragePermissions(Activity activity) {16         // Check if we have write permission17         int permission = ActivityCompat.checkSelfPermission(activity,18                 Manifest.permission.WRITE_EXTERNAL_STORAGE);19 20         if (permission != PackageManager.PERMISSION_GRANTED) {21             // We don't have permission so prompt the user22             ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,23                     REQUEST_EXTERNAL_STORAGE);24         }25     }

在报错的方法前面调用即可

官方文档：http://developer.android.com/training/permissions/requesting.html

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