We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

Bug 4566

Summary: Hot-plugging Bluetooth controller causes force-quit on Android
Product: SDL Reporter: Anthony @ POW Games <ant>
Component: joystickAssignee: Sylvain <sylvain.becker>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: sylvain.becker
Version: HG 2.0   
Hardware: All   
OS: Android (All)   

Description Anthony @ POW Games 2019-03-27 16:07:38 UTC 
Since the HIDAPI was introduced, turning a paired Bluetooth controller on or off will cause a force-quit on Android. A quick glance over Logcat and I saw this:

D/hidapi: Initializing Bluetooth
D/hidapi: Couldn't initialize Bluetooth, missing android.permission.BLUETOOTH

Do we need to add another permission to AndroidManifest.xml?
Comment 1 Sylvain 2019-04-02 07:02:58 UTC 
Not sure but is it working correctly when you add this very permission ?
Comment 2 Sam Lantinga 2019-04-17 03:13:05 UTC 
This sounds like Android is restarting the application due to a configuration change:
https://developer.android.com/guide/topics/manifest/activity-element.html#config

The default AndroidManifest.xml has this, can you try adding other values to see if one of those is triggering?
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
Comment 3 Anthony @ POW Games 2019-04-24 18:35:36 UTC 
Adding bluetooth permission = no change.

I tried adding different configChanges and sure enough, "navigation" worked! Now bluetooth controllers hot-plug nicely. So shall we add it as a default to the AndroidManifest.xml?

Funny that this is how this activity is described:

"navigation" The navigation type (trackball/dpad) has changed. (This should never normally happen.)
Comment 4 Anthony @ POW Games 2019-04-24 18:38:22 UTC 
I think the reason behind this is because the bluetooth game controller I was testing doubles-up as a keyboard, which probably comes with a DPAD? It's a MOCUTE-032X_B63-88CE
Comment 5 Sam Lantinga 2019-04-24 19:54:36 UTC 
Added to the default manifest, thanks!
https://hg.libsdl.org/SDL/rev/f926c8070a2a