Flutter报错总结

报错一) jbr jre 安装包索引不对

解决方案:

// 去Contents 目录 
cd /Applications/Android\ Studio.app/Contents 
// 创建快捷方式 
   ln -sf jbr jre
   flutter doctor

ln -sf jbr jre 命令

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解决完毕

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网上很多所谓的创建文件夹拷贝contents 的方式是不行的 , 直接导致Android Studio.app 报文件损坏的错误

报错 2 安卓模拟器的内存不够, 要5个G才可以跑

The Android emulator exited with code 1 during startup Android emulator stderr: ERROR | Not enough space to create userdata partition. Available: 4136.085938 MB at /Users/wanggang/.android/avd/Nexus_7_API_26.avd, need 7372.800000 MB. Address these issues and try again.
清理内存即可 /

报错3) 《Flutter实战·第二版》 书籍demo运行报错 问题

《Flutter实战·第二版》 书籍demo问题

demo来源

《Flutter实战·第二版》

对应的源码地址

源码

出现的错误 ①

Because flutter_in_action_2 depends on flukit from path which doesn't exist (could not find package flukit at "../flukit/package_src"), version solving failed.
Running "flutter pub get" in flutter_in_action_2-main...                
pub get failed (66; Because flutter_in_action_2 depends on flukit from path
which doesn't exist (could not find package flukit at "../flukit/package_src"),
version solving failed.)

解决方案

  ## flukit:
  ##   path: ../flukit/package_src

改为

  flukit: ^3.0.1

书籍出现的错误②

lib/chapter13/webview.dart:36:30: Error: The method 'showSnackBar' isn't defined for the class 'ScaffoldState'.
 - 'ScaffoldState' is from 'package:flutter/src/material/scaffold.dart' ('../../flutter/packages/flutter/lib/src/material/scaffold.dart').
Try correcting the name to the name of an existing method, or defining a method named 'showSnackBar'.
        Scaffold.of(context).showSnackBar(
                             ^^^^^^^^^^^^

Command PhaseScriptExecution failed with a nonzero exit code
** BUILD FAILED **

Building macOS application...                                           
Exception: Build process failed

解决办法

错误的api 注释

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解决完所有的错误 (完美运行)

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报错4) 安卓模拟器安装打怪之路

① 升级flutter

Flutter upgrade升级一直停留在 Running pub upgrade...
解决方案直接下载对应 的SDK

② 缺少安卓stuio

Unable to find bundled Java version 进行链接创建快捷方式 ,我相关的 博客有介绍

This app is using a deprecated version of the Android embedding. To avoid unexpected runtime failure

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版权声明：本文为CSDN博主「曲黎雪」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_45624072/article/details/127755574

Building a deployable iOS app requires a selected Development Team with a
Provisioning Profile. Please ensure that a Development Team is selected by:
1- Open the Flutter project's Xcode target with
open ios/Runner.xcworkspace
2- Select the 'Runner' project in the navigator then the 'Runner' target
in the project settings
3- Make sure a 'Development Team' is selected under Signing & Capabilities >
Team.
You may need to:
- Log in with your Apple ID in Xcode first
- Ensure you have a valid unique Bundle ID
- Register your device with your Apple Developer Account
- Let Xcode automatically provision a profile for your app
4- Build or run your project again

For more information, please visit:
https://flutter.dev/docs/get-started/install/macos#deploy-to-ios-devices

Or run on an iOS simulator without code signing

报错5) 使用r刷新界面问题

报错内容:

Another exception was thrown: 'package:flutter/src/widgets/framework.dart':
Failed assertion: line 4313 pos 14: 'owner!._debugCurrentBuildTarget == this':
is not true.

解决方案 :

使用'R'刷新 , 此问题未解决每次需要run 会让人崩溃,无法体验到fluterr 开发的乐趣 .

https://stackoverflow.com/questions/49371221/duplicate-globalkey-detected-in-widget-tree

报错6) provider报错

This is likely caused by an event handler (like a button's onPressed) that called
Provider.of without passing `listen: false`.

To fix, write:
Provider.of<ThemeProvider>(context, listen: false);

此处需要 进行 将watch 改为read