Reading from the documentation. I have to ask user for permission at runtime. Code example :
Add permission to android manifest like we used to do earlier :
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Check if the user has already granted the permission. If yes, skip asking for permission and continue with your work flow else ask user for permission :
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.System.canWrite(this)) {
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.READ_EXTERNAL_STORAGE}, 2909);
} else {
// continue with your code
}
} else {
// continue with your code
}
Now to check if the user granted the permission or denied it @Override OnRequestPermissionResult to get a callback :
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case 2909: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.e("Permission", "Granted");
} else {
Log.e("Permission", "Denied");
}
return;
}
}
}
I was not able to READ external storage only by asking WRITE
permission, so i had to request for
Manifest.permission.READ_EXTERNAL_STORAGE as well.
Also if you want to target versions below api 23, check the Build
VERSION at runtime with IF statement and ask for permissions only if
VERSION is equal or above Android M.
