Add button to take a photo This calls an external intent [1]. This does not work yet -- while the camera app is being called correctly, onActivityResult() always gets a -1 result. [1] https://developer.android.com/training/camera/photobasics
Use apostrophe in string
Two activities connected with an intent with a string message. Concludes <https://developer.android.com/training/basics/firstapp/building-ui>
Initial hello world