<itemvalue="Waits for multiple futures to complete and collects their results. Returns a future which will complete once all the provided futures have completed, either with their results, or with an error if any of the provided futures fail. The value of the returned future will be a list of all the values that were produced in the order that the futures are provided by iterating [futures]. If any future completes with an error, then the returned future completes with that error. If further futures also complete with errors, those errors are discarded. If `eagerError` is true, the returned future completes with an error immediately on the first error from one of the futures. Otherwise all futures must complete before the returned future is completed (still with the first error; the remaining errors are silently dropped). In the case of an error, [cleanUp] (if provided), is invoked on any non-null result of successful futures. This makes it possible to `cleanUp` resources that would otherwise be lost (since the returned future does not provide access to these values). The [cleanUp] function is unused if there is no error. The call to [cleanUp] should not throw. If it does, the error will be an uncaught asynchronous error. @pragma("vm:recognized", "other")"/>
<itemvalue="Add delay before hide skeletons."/>
<itemvalue="repeat"/>
<itemvalue="Creates an animation controller with no upper or lower bound for its value. [value] is the initial value of the animation. [duration] is the length of time this animation should last. [debugLabel] is a string to help identify this animation during debugging (used by [toString]). `vsync` is the [TickerProvider] for the current context. It can be changed by calling [resync]. It is required and must not be null. See [TickerProvider] for advice on obtaining a ticker provider. This constructor is most useful for animations that will be driven using a physics simulation, especially when the physics simulation has no pre-determined bounds."/>
@ -53,12 +54,11 @@
<itemvalue="interaction"/>
<itemvalue="菜谱"/>
<itemvalue="RenderBox.size accessed beyond the scope of resize, layout, or permitted parent access. RenderBox can always access its own size, otherwise, the only object that is allowed to read RenderBox.size is its parent, if they have said they will. It you hit this assert trying to access a child's size, pass "parentUsesSize: true" to that child's layout()."/>