Permission to write to the SD card

Question

I would like my app to archive the application DB to the SD card  In my code I check if the directory canWrite   exists  and if not  throw an IOException  In this particular instance  I am trying to copy the db file to the root directory on the SD card  but it s throwing an IOException  How can I change the permission on a folder file to be able to write to it

User · Answer

You re right that the SD Card directory is  sdcard but you shouldn t be hard coding it   Instead  make a call to Environment getExternalStorageDirectory   to get the directory   File sdDir   Environment getExternalStorageDirectory      If you haven t done so already  you will need to give your app the correct permission to write to the SD Card by adding the line below to your Manifest    lt uses-permission android name  android permission WRITE EXTERNAL STORAGE    gt

User · Answer

The suggested technique above in Dave s answer is certainly a good design practice  and yes ultimately the required permission must be set in the AndroidManifest xml file to access the external storage   However  the Mono-esque way to add most  if not all  not sure   manifest options  is through the attributes of the class implementing the activity  or service    The Visual Studio Mono plugin automatically generates the manifest  so its best not to manually tamper with it  I m sure there are cases where there is no other option    For example    Activity Label  MonoDroid App   MainLauncher true  Permission  android permission WRITE EXTERNAL STORAGE    public class MonoActivity   Activity     protected override void OnCreate Bundle bindle          base OnCreate bindle

[java] Permission to write to the SD card

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