Question

I am trying to write a file to the external storage of the android.
On the AndroidManifest.xml I’ve added (within the manifest tag)

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

then I tried:

File root = Environment.getExternalStorageDirectory();
File file = new File(root, xmlFilename);
file.createNewFile();

And then I get the exception.
How may I resolve this?

Answer 1

Make sure your SD card is not mounted to your computer. If you have enabled USB storage, your SD card becomes read-only for Android.

Other then that, your application looks fine and should work.

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Oh, and I would modify your code in a next way:

if(root.canWrite()){
    File file = new File(root, "file.xml");         
    file.createNewFile();
}