DefaultAssetPickerViewerBuilderDelegate class

Inheritance

• Object
• AssetPickerViewerBuilderDelegate<AssetEntity, AssetPathEntity>
• DefaultAssetPickerViewerBuilderDelegate

Constructors

DefaultAssetPickerViewerBuilderDelegate({required int currentIndex, required List<AssetEntity> previewAssets, required ThemeData themeData, AssetPickerProvider<AssetEntity, AssetPathEntity>? selectorProvider, AssetPickerViewerProvider<AssetEntity>? provider, List<AssetEntity>? selectedAssets, ThumbnailSize? previewThumbnailSize, SpecialPickerType? specialPickerType, int? maxAssets, bool shouldReversePreview = false, AssetSelectPredicate<AssetEntity>? selectPredicate})

Properties

bottomBarHeight → double

Height for bottom bar widget. 底栏部件的高度

no setter, inherited

bottomDetailHeight → double

no setter, inherited

bottomPreviewHeight → double

Height for bottom preview widget. 底栏预览部件的高度

no setter, inherited

currentAsset → AssetEntity

Getter for the current asset. 当前资源的Getter

no setter, inherited

currentIndex ↔ int

Current previewing index in assets. 当前查看的索引

getter/setter pair, inherited

doubleTapAnimation ↔ Animation<double>?

Animation for double tap. 双击缩放的动画

getter/setter pair, inherited

doubleTapAnimationController ↔ AnimationController

AnimationController for double tap animation. 双击缩放的动画控制器

getter/setter pair, inherited

doubleTapCurveAnimation ↔ Animation<double>

CurvedAnimation for double tap. 双击缩放的动画曲线

getter/setter pair, inherited

doubleTapListener ↔ VoidCallback

Callback for double tap. 双击缩放的回调

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

hasVideo → bool

Whether there are videos in preview/selected assets. 当前正在预览或已选的资源是否有视频

no setter

isAppleOS → bool

Whether the current platform is Apple OS. 当前平台是否为苹果系列系统

no setter, inherited

isDisplayingDetail → ValueNotifier<bool>

Whether detail widgets displayed. 详情部件是否显示

final, inherited

isSelectedPreviewing → bool

Whether the viewer is under preview mode for selected assets. 当前是否处于查看已选中资源的模式

late, final, inherited

isWeChatMoment → bool

Whether the SpecialPickerType.wechatMoment is enabled. 当前是否为微信朋友圈选择模式

no setter

maxAssets → int?

Maximum count for asset selection. 资源选择的最大数量

final, inherited

pageController → ExtendedPageController

PageController for assets preview PageView. 查看图片资源的页面控制器

no setter, inherited

pageStreamController → StreamController<int>

StreamController for viewing page index update. 用于更新当前正在浏览的资源页码的流控制器

final, inherited

previewAssets → List<AssetEntity>

Assets provided to preview. 提供预览的资源

final, inherited

previewingListController → ScrollController

The ScrollController for the previewing assets list. 正在预览的资源的 ScrollController

final, inherited

previewThumbnailSize → ThumbnailSize?

Thumb size for the preview of images in the viewer. 预览时图片的缩略图大小

final

provider → AssetPickerViewerProvider<AssetEntity>?

ChangeNotifier for photo selector viewer. 资源预览器的状态保持

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

selectedAssets → List<AssetEntity>?

Selected assets. 已选的资源

final, inherited

selectedCount → int

The length getter for selected assets currently. 当前选中的资源的长度获取

no setter, inherited

selectedMaximumAssets → bool

是否已经选择了最大数量的资源

no setter, inherited

selectedNotifier → ValueNotifier<int>

Construct a notifier to notify whether if a new asset is selected or unselected. 构造一个通知器，在新资源选中或取消选中时通知。

late, final, inherited

selectorProvider → AssetPickerProvider<AssetEntity, AssetPathEntity>?

Provider for AssetPicker. 资源选择器的状态保持

final, inherited

selectPredicate → AssetSelectPredicate<AssetEntity>?

Predicate whether an asset can be selected or unselected. 判断资源可否被选择。

final, inherited

semanticsTextDelegate → AssetPickerTextDelegate

no setter, inherited

shouldReversePreview → bool

Whether the preview sequence is reversed. 预览时顺序是否为反向

final, inherited

specialPickerType → SpecialPickerType?

The current special picker type for the viewer. 当前特殊选择类型

final

textDelegate → AssetPickerTextDelegate

no setter, inherited

themeData → ThemeData

Theme for the viewer. 主题

final, inherited

viewerState ↔ AssetPickerViewerState<AssetEntity, AssetPathEntity>

The State for a viewer. 预览器的状态实例

getter/setter pair, inherited

Methods

appBar(BuildContext context) → Widget

AppBar widget. 顶栏部件

assetPageBuilder(BuildContext context, int index) → Widget

Split page builder according to type of asset. 根据资源类型使用不同的构建页

override

bottomDetailBuilder(BuildContext context) → Widget

Detail widget aligned to bottom. 底部信息部件

override

bottomDetailItemBuilder(BuildContext context, int index) → Widget

Thumb item widgets in bottom detail. 底部信息栏单个资源缩略部件

override

build(BuildContext context) → Widget

Yes, the build method. 没错，是它是它就是它，我们亲爱的 build 方法~

override

confirmButton(BuildContext context) → Widget

It'll pop with AssetPickerProvider.selectedAssets when there are any assets were chosen. Then, the assets picker will pop too. 当有资源已选时，点击按钮将把已选资源通过路由返回。 资源选择器将识别并一同返回。

override

didUpdateViewer(covariant AssetPickerViewerState<AssetEntity, AssetPathEntity> state, covariant AssetPickerViewer<AssetEntity, AssetPathEntity> oldWidget, covariant AssetPickerViewer<AssetEntity, AssetPathEntity> newWidget) → void

Call when the viewer is calling State.didUpdateWidget. 当预览器调用 State.didUpdateWidget 时操作 State。

inherited

dispose() → void

Keep a dispose method to sync with State. 保留一个 dispose 方法与 State 同步。

inherited

failedItemBuilder(BuildContext context) → Widget

The item widget when AssetEntity.thumbnailData load failed. 资源缩略数据加载失败时使用的部件

inherited

initAnimations(covariant AssetPickerViewerState<AssetEntity, AssetPathEntity> state) → void

Initialize animations related to the zooming preview. 为缩放预览初始化动画

inherited

initStateAndTicker(covariant AssetPickerViewerState<AssetEntity, AssetPathEntity> state, TickerProvider v) → void

Call when viewer is calling State.initState. 当预览器调用 State.initState 时注册 State。

inherited

momentVideoBackButton(BuildContext context) → Widget

The back button when previewing video in SpecialPickerType.wechatMoment. 使用 SpecialPickerType.wechatMoment 预览视频时的返回按钮

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onChangingSelected(BuildContext context, AssetEntity asset, bool isSelected) → Future<bool>

inherited

ordinalSortKey(double value) → OrdinalSortKey

Produce OrdinalSortKey with the fixed name.

inherited

previewWidgetLoadStateChanged(BuildContext context, ExtendedImageState state, {bool hasLoaded = false}) → Widget

Common image load state changed callback with Widget. 图片加载状态的部件回调

inherited

selectAsset(AssetEntity entity) → void

inherited

selectButton(BuildContext context) → Widget

Select button. 选择按钮

override

switchDisplayingDetail({bool? value}) → void

Method to switch isDisplayingDetail. 切换显示详情状态的方法

inherited

syncSelectedAssetsWhenPop() → Future<bool>

Sync selected assets currently with asset picker provider. 在预览中当前已选的图片同步到选择器的状态

inherited

toString() → String

A string representation of this object.

inherited

unSelectAsset(AssetEntity entity) → void

inherited

updateAnimation(ExtendedImageGestureState state) → void

Execute scale animation when double tap. 双击时执行缩放动画

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited