自定义bottomNavigationBar,导入自定义图标

flutter:
  uses-material-design: true
  assets:
    #   - images/a_dot_burr.jpeg
    #   - images/a_dot_ham.jpeg
    - assets/images/home_logo.png
  # list giving the asset and other descriptors for the font. For
  # example:
  fonts:
    - family: iconfont
      fonts:
        - asset: assets/fonts/iconfont.ttf
  #       - asset: fonts/Schyler-Italic.ttf
  #         style: italic
  #   - family: Trajan Pro
  #     fonts:
  #       - asset: fonts/TrajanPro.ttf
  #       - asset: fonts/TrajanPro_Bold.ttf
  #         weight: 700
  #
  # For details regarding fonts from package dependencies,
  # see https://flutter.dev/custom-fonts/#from-packages

 

https://blog.csdn.net/qq_16221009/article/details/123856834

https://blog.csdn.net/hhbbeijing/article/details/124682762