I’ve been having the same problem with Pandora freezing. It’s been such a pain. I’ve also tried uninstalling the app but it still freezes. I notice it freezes more when I’m using another app with it like an exercise app or Map my walk app.
Sorry to hear that you're having trouble with the Pandora app freezing during your exercise sessions.
Something to note, the sound settings of each app are set by the needs of the app and cannot be altered. If you are playing a game or using an app that requires sound, the audio from Pandora may pause. It's not possible for us to override the sound settings, or any other functions of another app. However, I do have an iPhone and personally use the Map My Walk app with Pandora so this shouldn't impact your listening sessions.