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(), and if not then throw an IOException. In this perticular instance, I am trying to copy the db file to the root directory on the SD card, but its throwing an IOException. How can I change the permission on a folder/file to be able to write to it?

thanks

patrick

Answer 1

Figured out I need to use /sdcard/

Answer 2

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 you app the correct permission to write to the SD Card by adding this to your Manifest:

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

Answer 3

Thanks a lot Dave Webb. I am now able to create file in the SD Card.