后續(xù)遇到問題會(huì)陸續(xù)更新 ...
1、Error: Cannot run with sound null safety, because the following dependencies
don't support null safety:

• package:flutter_swiper
• package:flutter_screenutil
• package:flutter_page_indicator
• package:transformer_page_view

For solutions, see https://dart.dev/go/unsound-null-safety

碰到這種問題，安卓和iOS項(xiàng)目都跑不起來，一般2種解決方案：
a、降低 flutter 使用的版本
b、Flutter IDE啟動(dòng)禁用sound null safety
Android Studiio(原生開發(fā)，即根目錄為android)
flutter項(xiàng)目?jī)?nèi)的android 目錄下gradle.properties 增加extra-front-end-options=--no-sound-null-safety
Xcode(原生開發(fā)，即根目錄為ios)
在 Build Settings-》User-Defined. 添加 鍵EXTRA_FRONT_END_OPTIONS ，值 --no-sound-null-safety