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Comment ajouter une image d'actif dans la barre d'application en tant qu'icône d'action dans l'application Flutter?

Problème J'essaie d'ajouter une icône d'image de déconnexion dans la barre d'applications de l'écran flottant. J'ai créé un dossier de ressources et créé des répertoires images/icônes/et y ai placé des icônes. Je les ai mentionnés dans le fichier pubspec.yaml. J'ai essayé d'implémenter une image d'actif dans la barre d'applications, mais cela ne fonctionne pas.

Code

pubspe.yaml 


    name: mtrack_notifications
    description: Flutter application for MTrack Notifications 

    dependencies:
      flutter:
        sdk: flutter
      # The following adds the Cupertino Icons font to your application.
      # Use with the CupertinoIcons class for iOS style icons.
      cupertino_icons: ^0.1.2
      http: ^0.11.3+16
      shared_preferences: "^0.4.2"


    dev_dependencies:
      flutter_test:
        sdk: flutter


    # For information on the generic Dart part of this file, see the
    # following page: https://www.dartlang.org/tools/pub/pubspec

    # The following section is specific to Flutter.
    flutter:

      # The following line ensures that the Material Icons font is
      # included with your application, so that you can use the icons in
      # the material Icons class.
      uses-material-design: true

      # To add assets to your application, add an assets section, like this:
      # assets:
      #  - images/a_dot_burr.jpeg
      #  - images/a_dot_ham.jpeg
      assets:
      - assets/images/icons/like.png
      - assets/images/icons/logout.png
      # An image asset can refer to one or more resolution-specific "variants", see
      # https://flutter.io/assets-and-images/#resolution-aware.

      # For details regarding adding assets from package dependencies, see
      # https://flutter.io/assets-and-images/#from-packages

      # To add custom fonts to your application, add a fonts section here,
      # in this "flutter" section. Each entry in this list should have a
      # "family" key with the font family name, and a "fonts" key with a
      # list giving the asset and other descriptors for the font. For
      # example:
      # fonts:
      #   - family: Schyler
      #     fonts:
      #       - asset: fonts/Schyler-Regular.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.io/custom-fonts/#from-packages

Cliquez pour voir la capture d'écran IDE ici

Code Appbar 




    @override
      Widget build(BuildContext context) {
        //build a form widget using the form key we created above
        return new Scaffold(
          appBar: new AppBar(
            title: new Text(StringRef.appName),
            actions: [

          new Center(
          child:new Text(
            userName,
            textScaleFactor: 1.5,
            style: new TextStyle(
              fontSize: 12.0,
              color: Colors.white,
            ),
          )),
          new IconButton(
            icon: new Icon(Icons.close),
            tooltip: 'Closes application',
            onPressed: () => exit(0),
          ),

          new IconButton(
            icon: new Image.asset('images/icons/logout.png'),
            tooltip: 'Closes application',
            onPressed: () => exit(0),
          ),

            ],
          ),
androidflutterflutter-layoutflutter-dependenciesflutter-animation
13
user3831831

vous devez donner 2 espaces avant "-" et 1 espace après "-" pour la spécification de l'emplacement de l'image.

flutter:
  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

 assets:
   - assets/images/icons/like.png
   - assets/images/icons/logout.png
0
Deepya

n'essayez pas d'enregistrer toutes vos images dans pubspec.yaml si vous placez l'image dans le dossier des dossiers, vous devez enregistrer tous les dossiers. comme ça

vous mettez une image: hero.png dans le dossier Images dans le dossier Assets. Actifs> Images> hero.png

alors vous devriez les écrire dans 'pubspec.yaml' sous: 'flutter: assets: -Assets/Images/hero.png'

0
Roman Traversine