PreloadVideo<T extends VideoVo, M extends VideoModel<T>> class

封装一个支持预加载、业务控制的播放器 1）：预加载 2）：播放时避免屏幕熄灭 3）：横竖屏切换 4）：自定义样式 5）：业务化

参数说明: 参数 model 是初始视频列表的基础业务类，开发者需要创建一个类去继承

参数 initPlayIndex 是用于初始播放的下标，即从第 X 个视频播起

参数 buildPan 是构建视频以外的布局，如：评论、点赞等等

参数 getPlayUrlService 是用于获取播放地址的业务。当播放列表中的某一个item没有播放地址，此参数必传，用于获取播放地址的逻辑。无论item有没有播放地址，若传了该参数，则优先使用该参数去获取播放地址。

参数 loadingBuild 是构建获取视频列表过程中的构建布局

参数 errorBuild 是构建获取视频列表过程中失败的构建布局

参数 noDataBuild 是构建获取视频列表后没有数据的构建布局

参数 noMoreBuild 是构建获取视频列表没有更多数据时的构建布局

参数 scrollSpeed 更改pageView的滚动速度，取值0～1，越大则越快，默认0.4。注意：只在首次起作用，修改值后无法实时生效，销毁页面再重新进入即可。

参数 needVipBuild 加载某个视频，提示需要vip才能播放的布局

参数 needPurchaseBuild 加载某个视频，提示需要购买才能播放的布局

参数 needAdvBuild 加载某个视频，提示需要看广告才能播放的布局

Inheritance

Constructors

PreloadVideo({Key? key, required M model, int initPlayIndex = 0, ItemPanBuilder? buildPan, Future<ServicePlayStateVo> getPlayUrlService(T item)?, Widget? loadingBuild, Widget? errorBuild, Widget? noDataBuild, Widget? noMoreBuild, double scrollSpeed = 0.4, Widget? needAdvBuild, Widget? needPurchaseBuild, Widget? needVipBuild, Widget? gettingPlayUrlBuild, Widget? getErrorPlayUrlBuild}): const

buildPan → ItemPanBuilder?: 以下参数将赋值给列表中的item管理
final
errorBuild → Widget?: final
getErrorPlayUrlBuild → Widget?: final
getPlayUrlService → Future<ServicePlayStateVo> Function(T item)?: final
gettingPlayUrlBuild → Widget?: final
hashCode → int: The hash code for this object.
no setterinherited
initPlayIndex → int: final
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
loadingBuild → Widget?: final
model → M: final
needAdvBuild → Widget?: final
needPurchaseBuild → Widget?: final
needVipBuild → Widget?: final
noDataBuild → Widget?: final
noMoreBuild → Widget?: final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
scrollSpeed → double: 滚动控制相关
final

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<PreloadVideo<VideoVo, VideoModel<VideoVo>>>: Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode: Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String: A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String: Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String: Returns a one-line detailed description of the object.
inherited
toStringShort() → String: A short, textual description of this widget.
inherited