Dirty-hack, but works. Please submit PR if you know better solution
Primitive application for triggering system android screenshotter. It uses AccessibilityService for taking screenshots.
Useful for mapping hardware buttons to screenshot action when it not possible due to vendor limits. For example on my Sony Xperia 1 III I can remap 'custom' button to launch any app, but not for actions like creating screenshots.
- Install APK from releases
- Enable Accessibility feature: Settings -> Accessibility -> Screenshot -> Use Screenshot
- Assign your custom button to launch this application