硬件键在 Flutter 上显示屏幕键盘

Question

I discovered a strange behaviour in Flutter. I have a Zebra PDA with Android, and so I have an hardware keyboard on the device. If I press an hardware key on the device keyboard, the on-screen keyboard shows up, and I don't think that is supposed to happen. After some investigation, I found out that this happen as soon as I show a widget with a TextField on it. After the first time the on-screen keyboard appears, every time I press an hardware key the on-screen keyboard appears. This is very frustrating, because if I use hardware keys of course I don't need the on-screen keyboard. I don't really understand if this is an expected behaviour and, if so, how can I avoid it.

Answer 1

This doesn't seem to be an issue with Flutter, but rather on the device that you're using. If the device displays the softkeyboard on hardware keyboard key presses, it's likely that you need to have the softkeyboard disabled on the device's Settings.

On stock Android Settings, it's under System > Languages & input > Physical keyboard . Then toggle 'Show virtual keyboard'

I've also tried setting TextField keyboardType to null to see if it can forcefully disable the softkeyboard, but doing so just shows the default softkeyboard.

TextField(
  keyboardType: null
),