未解决的参考:新Flutter项目上的android [英] `Unresolved reference: android` on new Flutter project
问题描述
到目前为止，我的第一个Flutter应用程序似乎可以在手机上调试正常，但是突然之间，我在android/app/src/main/kotlin/my.appname.whatever/MainActivity文件中看到了此错误(下面的屏幕截图).
My first Flutter app seems to be debugging okay so far on my phone, but all of a sudden I'm seeing this error in my android/app/src/main/kotlin/my.appname.whatever/MainActivity file (screenshot below).
当我将鼠标悬停在onCreate上时，它显示如下:
Cannot access class 'android.Os.Bundle'. Check your module classpath for missing or conflicting dependencies.
And when I rollover the onCreate, it shows this:
Cannot access class 'android.Os.Bundle'. Check your module classpath for missing or conflicting dependencies.
我正在使用AndroidStudio 3.2.1
I'm using AndroidStudio 3.2.1
在尝试使Firebase正常运行时，我更改了此版本(我认为是1.2.17，但警告说它与IDE不同，因此我将其更改为建议的内容，警告消失了. ).即使尝试将其改回，我仍然在下面收到警告.
While trying to get Firebase going, I changed the version of this (it was 1.2.17 I think, but had a warning about it being different than the IDE, so I changed it to what it suggested and the warning went away). Even after trying to change it back, I'm still getting the warning below.
buildscript {
ext.kotlin_version = '1.3.11'
buildscript {
ext.kotlin_version = '1.3.11'
我认为这很简单，但是对于刚接触Android/Flutter的人...等等，我只是不知道在哪里寻找Unresolved reference: android，也不知道我做了什么它出现了.
I assume this is something simple, but for someone very new to Android/Flutter...etc, I just don't have a clue where to look for the Unresolved reference: android, nor have any idea what I did to make it show up.
推荐答案
在我来说，File -> Invalidate Caches / Restart起作用了.当Android Studio开始备份时，问题就消失了.并没有真正回答为什么"，但是...确实有效.
In my case, File -> Invalidate Caches / Restart worked. When Android Studio started back up, the issue was gone. Doesn't really answer the "why", but... it worked.
这篇关于未解决的参考:新Flutter项目上的android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
