A GlobalKey was used multiple times inside one widget's child list.
出師未捷身先死：
Installing ../../flutter/myapp/build/app/outputs/apk/app.apk...
E/flutter ( 3378): [ERROR:flutter/shell/common/shell.cc(178)] Dart Error: Unhandled exception:
E/flutter ( 3378): 'dart:ui/window.dart': Failed assertion: line 306: '<optimized out>': is not true.
E/flutter ( 3378): #0? ? ? _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:40:39)
E/flutter ( 3378): #1? ? ? _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
E/flutter ( 3378): #2? ? ? new Locale.fromSubtags (dart:ui/window.dart:306:15)
E/flutter ( 3378): #3? ? ? _updateLocales (dart:ui/hooks.dart:89:43)
Syncing files to device Android SDK built for x86...
I/flutter ( 3378): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter ( 3378): The following NoSuchMethodError was thrown building ScrollConfiguration(behavior:
I/flutter ( 3378): _MaterialScrollBehavior):
I/flutter ( 3378): The getter 'languageCode' was called on null.
I/flutter ( 3378): Receiver: null
I/flutter ( 3378): Tried calling: languageCode
初始化項(xiàng)目，啟動(dòng)時(shí)報(bào)這個(gè)錯(cuò)誤，不知道有沒有遇到的，如何解決？
2019-09-06
問題解決了！可能原因是虛擬設(shè)備為設(shè)置語言環(huán)境，默認(rèn)und語言，無法識(shí)別語言環(huán)境報(bào)的錯(cuò)誤。