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Bug 4191

Summary: SDL_StartTextInput() mangles Android joystick input
Product: SDL Reporter: RobLM <rob.l.molenaar>
Component: joystickAssignee: Sam Lantinga <slouken>
Status: NEW --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: 2.0.7   
Hardware: ARM   
OS: Android (All)   

Description RobLM 2018-06-08 13:09:10 UTC 
Joystick (game controller) events are limited and mangled after calling SDL_StartTextInput() on Android. This might be due to the OS entering 'text input mode'. Apps also generate a lot of ANRs (6000ms UI timeout warnings) while processing joystick events afterwards.

On my phone and game controller only the left stick and D-pad generate any events in the mangled mode, with the D-pad sending wrong axis IDs. The adb log is also spammed with ANRs.

I solved this by adding:
mLayout.removeView(mTextEdit);

To the SDLActivity SDLCommandHandler 'COMMAND_TEXTEDIT_HIDE' case so the DummyEdit is completely removed from the UI stack. This way regular joystick control resumes after finishing text entry. It would be nice however to find a way to make joystick buttons and axes work during text entry as well.
Comment 1 RobLM 2018-06-09 13:30:50 UTC 
After more testing, it turns out that my previous fix prevents the soft keyboard showing for successive calls to SDL_StartTextInput().

Unfocusing the text field using 'mLayout.requestFocus();' seems to work as a better fix. It re-enables joystick events and doesn't permanently hide the soft keyboard.