Sample App to reproduce the push notification sound file switching problem.
I want to have a solution to switch between different remote notification sounds, without storing something on the backend. So I tried to store different sounds in the main bundle of the app, and let the user decide which sound he wants. If the sound is selected I copy the file to $APPDIR/Library/Sounds with a specific filename (demo.caf). So I can push to a group of people, an everybody gets a different notification sound. The problem is, that if I copy the file into the $APPDIR/Library/Sounds dictionary the first time, everything works fine. If I switch the file the second time (remove the old one, copy the new one to the same place, with the same name) the sound isn't played anymore. If I reboot the iOS device, the new sound is played until I switch to another file again.
The Library/Sounds directory should work as notification sound directory, have a look at the documentation at:
Apple Remote Notification Documentation
So I have written a little sample app, this one uses local notifications, because they are easier to setup.
- Build the app with Xcode.
- Launch the app on an iOS device. (Don't use the simulator)
- Select a notification sound.
- Now you have 5 seconds to put the app into the background, or close the app.
- After 5 seconds the local notification should appear an also play the selected sound.
- Lauch the app again, and select another sound.
- You have again 5 seconds to put the app in the background, or close the app.
- The local notification appears, but there is no notification sound.
I have the same problem with remote notifications. If I send a remote notification after rebooting the device, the selected sound is played.