Android allows other apps to access protected content of an app without requesting the
necessary permission when the app returns an Intent with FLAG_GRANT_READ_URI_PERMISSION.
This regularly happens as a result of ACTION_GET_CONTENT, i.e. what we use to pick content
to be attached to a message. Accessing that content only works while the receiving activity
is running. Afterwards accessing the content throws a SecurityException because of the
missing permission.
This commit changes K-9 Mail's behavior to copy the content to a temporary file in K-9's
cache directory while the activity is still running.
Fixes issue 4847, 5821
This also fixes bugs related to the fact that K-9 Mail didn't save a copy of attached content
in the message database.
Fixes issue 1187, 3330, 4930
Gmail style user pics, 2nd try
* sfuhrm/gmail-style-user-pics:
Changed the fallback char from 'K' to '?'. The riddler was here ;).
Using Android proposed colors as contact color palette now: http://developer.android.com/design/style/color.html
Fixed NPE found by blackbox87 ... thanks pal!
Added more finer characters as proposed by cketti
Caching also the calculated anonymous bitmap as proposed by maniac103. This removes a lot of code for special handling unknown contacts.
Bugfix for negative modulo result indexing the palette array
Changed hash based color calc to a hash indexed palette as discussed in the pull request.
GMail-app-style generated colorful one-letter contact pictures for pictureless contacts
Conflicts:
src/com/fsck/k9/activity/misc/ContactPictureLoader.java
src/com/fsck/k9/fragment/MessageListFragment.java
