<itemvalue="The length of time this animation should last. If [reverseDuration] is specified, then [duration] is only used when going [forward]. Otherwise, it specifies the duration going in both directions."/>
<itemvalue="Called whenever the widget configuration changes. If the parent widget rebuilds and request that this location in the tree update to display a new widget with the same [runtimeType] and [Widget.key], the framework will update the [widget] property of this [State] object to refer to the new widget and then call this method with the previous widget as an argument. Override this method to respond when the [widget] changes (e.g., to start implicit animations). The framework always calls [build] after calling [didUpdateWidget], which means any calls to [setState] in [didUpdateWidget] are redundant. {@macro flutter.widgets.State.initState} Implementations of this method should start with a call to the inherited method, as in `super.didUpdateWidget(oldWidget)`."/>
<itemvalue="Called when a dependency of this [State] object changes. For example, if the previous call to [build] referenced an [InheritedWidget] that later changed, the framework would call this method to notify this object about the change. This method is also called immediately after [initState]. It is safe to call [BuildContext.dependOnInheritedWidgetOfExactType] from this method. Subclasses rarely override this method because the framework always calls [build] after a dependency changes. Some subclasses do override this method because they need to do some expensive work (e.g., network fetches) when their dependencies change, and that work would be too expensive to do for every build."/>
<itemvalue="Whether to continue showing the old image (true), or briefly show nothing (false), when the image provider changes. The default value is false. Design discussion Why is the default value of [gaplessPlayback] false? Having the default value of [gaplessPlayback] be false helps prevent situations where stale or misleading information might be presented. Consider the following case: We have constructed a 'Person' widget that displays an avatar [Image] of the currently loaded person along with their name. We could request for a new person to be loaded into the widget at any time. Suppose we have a person currently loaded and the widget loads a new person. What happens if the [Image] fails to load? Option A ([gaplessPlayback] = false): The new person's name is coupled with a blank image. Option B ([gaplessPlayback] = true): The widget displays the avatar of the previous person and the name of the newly loaded person. This is why the default value is false. Most of the time, when you change the image provider you're not just changing the image, you're removing the old widget and adding a new one and not expecting them to have any relationship. With [gaplessPlayback] on you might accidentally break this expectation and re-use the old widget."/>
@ -55,12 +56,11 @@
<itemvalue="number Of Particles"/>
<itemvalue="emission Frequency"/>
<itemvalue="particle Drag"/>
<itemvalue="A Timestamp represents a point in time independent of any time zone or calendar, represented as seconds and fractions of seconds at nanosecond resolution in UTC Epoch time. It is encoded using the Proleptic Gregorian Calendar which extends the Gregorian calendar backwards to year one. It is encoded assuming all minutes are 60 seconds long, i.e. leap seconds are "smeared" so that no leap second table is needed for interpretation. Range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. By restricting to that range, we ensure that we can convert to and from RFC 3339 date strings. For more information, see [the reference timestamp definition](https:github.comgoogleprotobufblobmastersrcgoogleprotobuftimestamp.proto)"/>
debuggerx
3 years ago