systemHideKeyboard function
关闭键盘
Implementation
void systemHideKeyboard({bool hideFocus = true}) async {
if (hideFocus) {
/// 关闭键盘并失去焦点
return FocusManager.instance.primaryFocus?.unfocus();
}
/// 关闭键盘并保留焦点
return SystemChannels.textInput.invokeMethod('TextInput.hide');
}