Widgetbuild(BuildContext context){returnFadeInImage(width:100,height:100,fadeOutDuration:Duration(seconds:1),fadeOutCurve:Curves.easeOutQuad,fadeInDuration:Duration(seconds:2),fadeInCurve:Curves.easeInQuad,placeholderErrorBuilder:_placeholderErrorBuilder,placeholder:AssetImage('assets/images/default_icon2....
FadeInImage( image: _addImageLoadListener(imageUrl), // TODO 未加载出来前的占位图 placeholder: AssetImage("xxx/xxx.jpg"), fit: BoxFit.fill, imageErrorBuilder: (context, error, stackTrace) { // TODO 图片加载错误后展示的 widget // print("---图片加载错误---"); // 此处不能 setState ...
在你的代码中,ResizeImage可能是一个自定义组件,用于调整图片大小。如果ResizeImage内部没有正确处理图片加载状态或图片数据,它可能会阻止FadeInImage接收到正确的图片加载信号。 解决方案: 检查ResizeImage组件的实现,确保它正确地将图片加载状态传递给其子组件。 尝试直接使用NetworkImage而不通过ResizeImage,看问题是否仍...
child: FadeInImage.assetNetwork( placeholder:"assets/images/normal_user_icon.png",//预览图fit: BoxFit.fitWidth, image:"https://img.alicdn.com/tfs/TB148sWfMHqK1RjSZFgXXa7JXXa-536-482.png", width:160.0, height:160.0, ), ), SizedBox( height:20.0, ), CircleAvatar( backgroundImage: Netwo...
child: FadeInImage.assetNetwork( placeholder:"assets/images/app_loading.png", fadeOutDuration: Duration(milliseconds:3000), fadeOutCurve: Curves.easeOut, image: "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1584502838493&di=a911bd87ead27d565adafde13d8c5cef&imgtype=0...
Flutter原有的图片缓存机制,是通过PaintingBinding.instance!.imageCache来管理缓存的,这个缓存缓存到的是内存中,每次重新打开APP或者缓存被清理都会再次进行网络请求,大图片加载慢不友好,且增加服务器负担。 二、思路 1、查看FadeInImage.assetNetwork、Image.network等几个网络请求的命名构造方法,初始化了ImageProvider。
/// The scale to place in the [ImageInfo] object of the image. final double scale; /// The HTTP headers that will be used with [HttpClient.get] to fetch image from network. final Map<String, String> headers; @override Future<NetworkImageWithoutAuth> obtainKey(ImageConfiguration configuratio...
child:FadeInImage.memoryNetwork( color:Colors.blue, colorBlendMode:BlendMode.color, fadeInDuration:constDuration(seconds:2), placeholder:kTransparentImage, image:'https://picsum.photos/600', ), ), ); } } Screenshots or Video Screenshots / Video demonstration ...
fadeOutDuration: Duration(milliseconds: 10), fadeInDuration: Duration(milliseconds: 10), image: NetworkImage( //网络图片地址, ), placeholder: AssetImage( //自己占位图 'images/Me/ic_avatar_default.png', ), ), ), 1. 2. 3. 4.
return Image.asset("images/test.jpg"); } } 1 2 3 4 5 6 占位图的实现 class _DemoFulWidgetState extends State<DemoFulWidget> { @override Widget build(BuildContext context) { return FadeInImage( fadeOutDuration: Duration(milliseconds: 1), ...