ImageLoader class

图片工具类

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

config → ImageLoaderConfig

获取当前配置

no setter

imgCache ↔ Map<String, Uint8List>

getter/setter pair

Static Methods

asset(String name, {Key? key, ImageFrameBuilder? frameBuilder, ImageErrorWidgetBuilder? errorBuilder, String? semanticLabel, bool excludeFromSemantics = false, Color? color, double? scale, double? width, double? height, Animation<double>? opacity, BoxFit? fit = BoxFit.cover, BlendMode? colorBlendMode, ImageRepeat repeat = ImageRepeat.noRepeat, AlignmentGeometry alignment = Alignment.center, Rect? centerSlice, bool matchTextDirection = false, bool isAntiAlias = false, bool gaplessPlayback = false, int? cacheWidth, int? cacheHeight, FilterQuality filterQuality = FilterQuality.medium, bool? isRe, bool circular = false, double? radius, BorderRadius? borderRadius, BoxBorder? border}) → Widget

加载本地资源图片 name 资源名称 isRe 是否使用特殊路径，如果为null则使用全局配置 circular 是否设置为圆形 radius 圆角半径 borderRadius 自定义圆角

cachedNetwork(String? imageUrl, {double? width, double? height, String? placeholder, ImageErrorWidgetBuilder? errorBuilder, Alignment alignment = Alignment.center, BoxFit? fit = BoxFit.cover, BoxFit? placeholderFit = BoxFit.cover, Duration? fadeOutDuration, Duration? placeholderFadeInDuration, Duration? fadeInDuration, bool? useOldImageOnUrlChange, bool matchTextDirection = false, bool circular = false, double? radius, BorderRadius? borderRadius, BoxBorder? border}) → Widget

加载一张网络图片并使用缓存 imageUrl 网络图片的地址 width 图片视图宽 height 图片视图高 placeholder 加载占位图，如果为空则使用全局配置的默认占位图 alignment 对齐方式，默认 Alignment.center fit 网络图片的裁剪方式 placeholderFit 占位图片的裁剪方式 fadeOutDuration 淡出动画时长 placeholderFadeInDuration 占位图淡入动画时长 fadeInDuration 图片淡入动画时长 useOldImageOnUrlChange 是否在URL改变时使用旧图片 circular 是否设置为圆形 radius 圆角半径 borderRadius 自定义圆角

file(String localPath, {double? size, double? width, double? height, Key? key, ImageFrameBuilder? frameBuilder, ImageErrorWidgetBuilder? errorBuilder, String? semanticLabel, bool excludeFromSemantics = false, Color? color, double? scale, Animation<double>? opacity, BoxFit? fit = BoxFit.cover, BlendMode? colorBlendMode, ImageRepeat repeat = ImageRepeat.noRepeat, AlignmentGeometry alignment = Alignment.center, Rect? centerSlice, bool matchTextDirection = false, bool isAntiAlias = false, bool gaplessPlayback = false, int? cacheWidth, int? cacheHeight, FilterQuality filterQuality = FilterQuality.medium, String? placeholder, bool circular = false, double? radius, BorderRadius? borderRadius, BoxBorder? border}) → Widget

加载文件图片

getUint8List(String name) → Uint8List?

imageProvider(String name, {bool? isRe}) → ImageProvider<Object>

获取图片提供者 name 资源名称 isRe 是否使用特殊路径，如果为null则使用全局配置

local(String name, {double? size, double? width, double? height, BoxFit? fit = BoxFit.cover, bool? isRe, bool matchTextDirection = false, bool circular = false, double? radius, BorderRadius? borderRadius, BoxBorder? border}) → Widget

便捷方法：加载本地图片（使用全局配置） circular 是否设置为圆形 radius 圆角半径 borderRadius 自定义圆角

memory(Uint8List bytes, {double? size, double? width, double? height, int? cacheWidth, int? cacheHeight, Key? key, ImageFrameBuilder? frameBuilder, ImageErrorWidgetBuilder? errorBuilder, String? semanticLabel, bool excludeFromSemantics = false, Color? color, double? scale, Animation<double>? opacity, BoxFit? fit = BoxFit.cover, BlendMode? colorBlendMode, ImageRepeat repeat = ImageRepeat.noRepeat, AlignmentGeometry alignment = Alignment.center, Rect? centerSlice, bool matchTextDirection = false, bool isAntiAlias = false, bool gaplessPlayback = false, FilterQuality filterQuality = FilterQuality.medium, bool circular = false, double? radius, BorderRadius? borderRadius, BoxBorder? border}) → Widget

从Uint8List数据加载图片 bytes 图片的字节数据 width 图片视图宽 height 图片视图高 fit 图片填充方式 circular 是否设置为圆形 radius 圆角半径 borderRadius 自定义圆角

network(String? imageUrl, {double? size, double? width, double? height, String? placeholder, BoxFit? fit = BoxFit.cover, Alignment alignment = Alignment.center, bool circular = false, double? radius, BorderRadius? borderRadius, BoxBorder? border}) → Widget

便捷方法：加载网络图片（使用全局配置） circular 是否设置为圆形 radius 圆角半径 borderRadius 自定义圆角

preloadNetworkImage(String? imageUrl, BuildContext context, ImageStreamListener? listener) → void

预加载图片

setConfig(ImageLoaderConfig config) → void

设置全局配置