focusscopenode专题

Flutter异常 NoSuchMethodError The getter focusScopeNode was called on null

在启动新页面是出现异常: [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The getter 'focusScopeNode' was called on null.E/flutter (26425): Receiver: null E/flutter (26