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Bug 4191 - SDL_StartTextInput() mangles Android joystick input
Summary: SDL_StartTextInput() mangles Android joystick input
Status: NEW
Alias: None
Product: SDL
Classification: Unclassified
Component: joystick (show other bugs)
Version: 2.0.7
Hardware: ARM Android (All)
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-06-08 13:09 UTC by RobLM
Modified: 2018-06-09 13:30 UTC (History)
0 users

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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.