java.lang.Object | |
↳ | android.transition.Transition |
Known Direct Subclasses |
Known Indirect Subclasses |
A Transition holds information about animations that will be run on its
targets during a scene change. Subclasses of this abstract class may
choreograph several child transitions (TransitionSet
or they may
perform custom animations themselves. Any Transition has two main jobs:
(1) capture property values, and (2) play animations based on changes to
captured property values. A custom transition knows what property values
on View objects are of interest to it, and also knows how to animate
changes to those values. For example, the Fade
transition tracks
changes to visibility-related properties and is able to construct and run
animations that fade items in or out based on changes to those properties.
Note: Transitions may not work correctly with either SurfaceView
or TextureView
, due to the way that these views are displayed
on the screen. For SurfaceView, the problem is that the view is updated from
a non-UI thread, so changes to the view due to transitions (such as moving
and resizing the view) may be out of sync with the display inside those bounds.
TextureView is more compatible with transitions in general, but some
specific transitions (such as Fade
) may not be compatible
with TextureView because they rely on ViewOverlay
functionality,
which does not currently work with TextureView.
Transitions can be declared in XML resource files inside the res/transition
directory. Transition resources consist of a tag name for one of the Transition
subclasses along with attributes to define some of the attributes of that transition.
For example, here is a minimal resource file that declares a ChangeBounds
transition:
<changeBounds/>
This TransitionSet contains Explode
for visibility,
ChangeBounds
, ChangeTransform
,
and ChangeClipBounds
for non-ImageView
s and
MoveImage
for ImageView
s:
<transitionSet xmlns:android="http://schemas.android.com/apk/res/android"> <explode/> <transitionSet> <targets> <target android:excludeClass="android.widget.ImageView"/> </targets> <changeBounds/> <changeTransform/> <changeClipBounds/> </transitionSet> <moveImage> <targets> <target android:targetClass="android.widget.ImageView"/> </targets> </moveImage> </transitionSet>
Note that attributes for the transition are not required, just as they are
optional when declared in code; Transitions created from XML resources will use
the same defaults as their code-created equivalents. Here is a slightly more
elaborate example which declares a TransitionSet
transition with
ChangeBounds
and Fade
child transitions:
<transitionSet xmlns:android="http://schemas.android.com/apk/res/android" android:transitionOrdering="sequential"> <changeBounds/> <fade android:fadingMode="fade_out" > <targets> <target android:targetId="@id/grayscaleContainer" /> </targets> </fade> </transitionSet>
In this example, the transitionOrdering attribute is used on the TransitionSet
object to change from the default ORDERING_TOGETHER
behavior
to be ORDERING_SEQUENTIAL
instead. Also, the Fade
transition uses a fadingMode of OUT
instead of the default
out-in behavior. Finally, note the use of the targets
sub-tag, which
takes a set of target
tags, each
of which lists a specific targetId
, targetClass
,
targetViewName
, excludeId
, excludeClass
, or
excludeViewName
, which this transition acts upon.
Use of targets is optional, but can be used to either limit the time spent checking
attributes on unchanging views, or limiting the types of animations run on specific views.
In this case, we know that only the grayscaleContainer
will be
disappearing, so we choose to limit the Fade
transition to only that view.
Transition
, TransitionSet
,
TransitionTarget
, Fade
, and
Slide
.
Nested Classes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Transition.EpicenterCallback | Class to get the epicenter of Transition. | ||||||||||
Transition.TransitionListener | A transition listener receives notifications from a transition. |
XML Attributes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
android:duration | setDuration(long) | Amount of time (in milliseconds) that the transition should run. | |||||||||
android:interpolator | setInterpolator(TimeInterpolator) | Interpolator to be used in the animations spawned by this transition. | |||||||||
android:startDelay | setStartDelay(long) | Delay in milliseconds before the transition starts. |
Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
int | MATCH_ID | With setMatchOrder(int) , chooses to match by
getId() . |
|||||||||
int | MATCH_INSTANCE | With setMatchOrder(int) , chooses to match by View instance. |
|||||||||
int | MATCH_ITEM_ID | With setMatchOrder(int) , chooses to match by the Adapter
item id. |
|||||||||
int | MATCH_VIEW_NAME | With setMatchOrder(int) , chooses to match by
getViewName() . |
Public Constructors | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Constructs a Transition object with no target objects.
|
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Adds a listener to the set of listeners that are sent events through the
life of an animation, such as start, repeat, and end.
| |||||||||||
Adds the id of a target view that this Transition is interested in
animating.
| |||||||||||
Adds the Class of a target view that this Transition is interested in
animating.
| |||||||||||
Sets the target view instances that this Transition is interested in
animating.
| |||||||||||
Adds the viewName of a target view that this Transition is interested in
animating.
| |||||||||||
Captures the values in the end scene for the properties that this
transition monitors.
| |||||||||||
Captures the values in the start scene for the properties that this
transition monitors.
| |||||||||||
Creates and returns a copy of this
Object . | |||||||||||
This method creates an animation that will be run for this transition
given the information in the startValues and endValues structures captured
earlier for the start and end scenes.
| |||||||||||
Whether to add the children of given target to the list of target children
to exclude from this transition.
| |||||||||||
Whether to add the given type to the list of types whose children should
be excluded from this transition.
| |||||||||||
Whether to add the children of the given id to the list of targets to exclude
from this transition.
| |||||||||||
Whether to add the given viewName to the list of target viewNames to exclude from this
transition.
| |||||||||||
Whether to add the given id to the list of target ids to exclude from this
transition.
| |||||||||||
Whether to add the given type to the list of types to exclude from this
transition.
| |||||||||||
Whether to add the given target to the list of targets to exclude from this
transition.
| |||||||||||
Returns the duration set on this transition.
| |||||||||||
Returns the epicenter as specified by the
Transition.EpicenterCallback or null if no callback exists. | |||||||||||
Returns the callback used to find the epicenter of the Transition.
| |||||||||||
Returns the interpolator set on this transition.
| |||||||||||
Returns the name of this Transition.
| |||||||||||
Returns the
TransitionPropagation used to calculate Animator start
delays. | |||||||||||
Returns the startDelay set on this transition.
| |||||||||||
Returns the list of target IDs that this transition limits itself to
tracking and animating.
| |||||||||||
Returns the list of target viewNames that this transition limits itself to
tracking and animating.
| |||||||||||
Returns the list of target viewNames that this transition limits itself to
tracking and animating.
| |||||||||||
Returns the list of target views that this transition limits itself to
tracking and animating.
| |||||||||||
Returns the set of property names used stored in the
TransitionValues
object passed into captureStartValues(TransitionValues) that
this transition cares about for the purposes of canceling overlapping animations. | |||||||||||
This method can be called by transitions to get the TransitionValues for
any particular view during the transition-playing process.
| |||||||||||
Removes a listener from the set listening to this animation.
| |||||||||||
Removes the given targetId from the list of ids that this Transition
is interested in animating.
| |||||||||||
Removes the given target from the list of targets that this Transition
is interested in animating.
| |||||||||||
Removes the given targetName from the list of viewNames that this Transition
is interested in animating.
| |||||||||||
Removes the given target from the list of targets that this Transition
is interested in animating.
| |||||||||||
Sets the duration of this transition.
| |||||||||||
Sets the callback to use to find the epicenter of a Transition.
| |||||||||||
Sets the interpolator of this transition.
| |||||||||||
Sets the order in which Transition matches View start and end values.
| |||||||||||
Sets the method for determining Animator start delays.
| |||||||||||
Sets the startDelay of this transition.
| |||||||||||
Returns a string containing a concise, human-readable description of this
object.
|
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.lang.Object
|
Amount of time (in milliseconds) that the transition should run.
Must be an integer value, such as "100
".
This may also be a reference to a resource (in the form
"@[package:]type:name
") or
theme attribute (in the form
"?[package:][type:]name
")
containing a value of this type.
This corresponds to the global attribute
resource symbol duration
.
Interpolator to be used in the animations spawned by this transition.
Must be a reference to another resource, in the form "@[+][package:]type:name
"
or to a theme attribute in the form "?[package:][type:]name
".
This corresponds to the global attribute
resource symbol interpolator
.
Delay in milliseconds before the transition starts.
Must be an integer value, such as "100
".
This may also be a reference to a resource (in the form
"@[package:]type:name
") or
theme attribute (in the form
"?[package:][type:]name
")
containing a value of this type.
This corresponds to the global attribute
resource symbol startDelay
.
With setMatchOrder(int)
, chooses to match by
getId()
. Negative IDs will not be matched.
With setMatchOrder(int)
, chooses to match by View instance.
With setMatchOrder(int)
, chooses to match by the Adapter
item id. When hasStableIds()
returns false, no match
will be made for items.
With setMatchOrder(int)
, chooses to match by
getViewName()
. Null names will not be matched.
Constructs a Transition object with no target objects. A transition with no targets defaults to running on all target objects in the scene hierarchy (if the transition is not contained in a TransitionSet), or all target objects passed down from its parent (if it is in a TransitionSet).
Adds a listener to the set of listeners that are sent events through the life of an animation, such as start, repeat, and end.
listener | the listener to be added to the current set of listeners for this animation. |
---|
Adds the id of a target view that this Transition is interested in animating. By default, there are no targetIds, and a Transition will listen for changes on every view in the hierarchy below the sceneRoot of the Scene being transitioned into. Setting targetIds constrains the Transition to only listen for, and act on, views with these IDs. Views with different IDs, or no IDs whatsoever, will be ignored.
Note that using ids to specify targets implies that ids should be unique within the view hierarchy underneat the scene root.
targetId | The id of a target view, must be a positive number. |
---|
transitionSet.addTransitions(new Fade()).addTarget(someId);
Adds the Class of a target view that this Transition is interested in animating. By default, there are no targetTypes, and a Transition will listen for changes on every view in the hierarchy below the sceneRoot of the Scene being transitioned into. Setting targetTypes constrains the Transition to only listen for, and act on, views with these classes. Views with different classes will be ignored.
Note that any View that can be cast to targetType will be included, so
if targetType is View.class
, all Views will be included.
targetType | The type to include when running this transition. |
---|
transitionSet.addTransitions(new Fade()).addTarget(ImageView.class);
Sets the target view instances that this Transition is interested in animating. By default, there are no targets, and a Transition will listen for changes on every view in the hierarchy below the sceneRoot of the Scene being transitioned into. Setting targets constrains the Transition to only listen for, and act on, these views. All other views will be ignored.
The target list is like the targetId
list except this list specifies the actual View instances, not the ids
of the views. This is an important distinction when scene changes involve
view hierarchies which have been inflated separately; different views may
share the same id but not actually be the same instance. If the transition
should treat those views as the same, then addTarget(int)
should be used
instead of addTarget(View)
. If, on the other hand, scene changes involve
changes all within the same view hierarchy, among views which do not
necessarily have ids set on them, then the target list of views may be more
convenient.
target | A View on which the Transition will act, must be non-null. |
---|
transitionSet.addTransitions(new Fade()).addTarget(someView);
Adds the viewName of a target view that this Transition is interested in animating. By default, there are no targetNames, and a Transition will listen for changes on every view in the hierarchy below the sceneRoot of the Scene being transitioned into. Setting targetNames constrains the Transition to only listen for, and act on, views with these viewNames. Views with different viewNames, or no viewName whatsoever, will be ignored.
Note that viewNames should be unique within the view hierarchy.
targetName | The viewName of a target view, must be non-null. |
---|
transitionSet.addTransitions(new Fade()).addTarget(someName);
Captures the values in the end scene for the properties that this
transition monitors. These values are then passed as the endValues
structure in a later call to
createAnimator(ViewGroup, TransitionValues, TransitionValues)
.
The main concern for an implementation is what the
properties are that the transition cares about and what the values are
for all of those properties. The start and end values will be compared
later during the
createAnimator(android.view.ViewGroup, TransitionValues, TransitionValues)
method to determine what, if any, animations, should be run.
Subclasses must implement this method. The method should only be called by the transition system; it is not intended to be called from external classes.
transitionValues | The holder for any values that the Transition
wishes to store. Values are stored in the values field
of this TransitionValues object and are keyed from
a String value. For example, to store a view's rotation value,
a transition might call
transitionValues.values.put("appname:transitionname:rotation",
view.getRotation()) . The target view will already be stored in
the transitionValues structure when this method is called. |
---|
Captures the values in the start scene for the properties that this
transition monitors. These values are then passed as the startValues
structure in a later call to
createAnimator(ViewGroup, TransitionValues, TransitionValues)
.
The main concern for an implementation is what the
properties are that the transition cares about and what the values are
for all of those properties. The start and end values will be compared
later during the
createAnimator(android.view.ViewGroup, TransitionValues, TransitionValues)
method to determine what, if any, animations, should be run.
Subclasses must implement this method. The method should only be called by the transition system; it is not intended to be called from external classes.
transitionValues | The holder for any values that the Transition
wishes to store. Values are stored in the values field
of this TransitionValues object and are keyed from
a String value. For example, to store a view's rotation value,
a transition might call
transitionValues.values.put("appname:transitionname:rotation",
view.getRotation()) . The target view will already be stored in
the transitionValues structure when this method is called. |
---|
Creates and returns a copy of this Object
. The default
implementation returns a so-called "shallow" copy: It creates a new
instance of the same class and then copies the field values (including
object references) from this instance to the new instance. A "deep" copy,
in contrast, would also recursively clone nested objects. A subclass that
needs to implement this kind of cloning should call super.clone()
to create the new instance and then create deep copies of the nested,
mutable objects.
This method creates an animation that will be run for this transition given the information in the startValues and endValues structures captured earlier for the start and end scenes. Subclasses of Transition should override this method. The method should only be called by the transition system; it is not intended to be called from external classes.
This method is called by the transition's parent (all the way up to the
topmost Transition in the hierarchy) with the sceneRoot and start/end
values that the transition may need to set up initial target values
and construct an appropriate animation. For example, if an overall
Transition is a TransitionSet
consisting of several
child transitions in sequence, then some of the child transitions may
want to set initial values on target views prior to the overall
Transition commencing, to put them in an appropriate state for the
delay between that start and the child Transition start time. For
example, a transition that fades an item in may wish to set the starting
alpha value to 0, to avoid it blinking in prior to the transition
actually starting the animation. This is necessary because the scene
change that triggers the Transition will automatically set the end-scene
on all target views, so a Transition that wants to animate from a
different value should set that value prior to returning from this method.
Additionally, a Transition can perform logic to determine whether the transition needs to run on the given target and start/end values. For example, a transition that resizes objects on the screen may wish to avoid running for views which are not present in either the start or end scenes.
If there is an animator created and returned from this method, the
transition mechanism will apply any applicable duration, startDelay,
and interpolator to that animation and start it. A return value of
null
indicates that no animation should run. The default
implementation returns null.
The method is called for every applicable target object, which is
stored in the view
field.
sceneRoot | The root of the transition hierarchy. |
---|---|
startValues | The values for a specific target in the start scene. |
endValues | The values for the target in the end scene. |
Whether to add the children of given target to the list of target children
to exclude from this transition. The exclude
parameter specifies
whether the target should be added to or removed from the excluded list.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded either by their
id, or by their instance reference, or by the Class of that view
(eg, Spinner
).
target | The target to ignore when running this transition. |
---|---|
exclude | Whether to add the target to or remove the target from the current list of excluded targets. |
Whether to add the given type to the list of types whose children should
be excluded from this transition. The exclude
parameter
specifies whether the target type should be added to or removed from
the excluded list.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded either by their
id, or by their instance reference, or by the Class of that view
(eg, Spinner
).
type | The type to ignore when running this transition. |
---|---|
exclude | Whether to add the target type to or remove it from the current list of excluded target types. |
Whether to add the children of the given id to the list of targets to exclude
from this transition. The exclude
parameter specifies whether
the children of the target should be added to or removed from the excluded list.
Excluding children in this way provides a simple mechanism for excluding all
children of specific targets, rather than individually excluding each
child individually.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded either by their
id, or by their instance reference, or by the Class of that view
(eg, Spinner
).
targetId | The id of a target whose children should be ignored when running this transition. |
---|---|
exclude | Whether to add the target to or remove the target from the current list of excluded-child targets. |
Whether to add the given viewName to the list of target viewNames to exclude from this
transition. The exclude
parameter specifies whether the target
should be added to or removed from the excluded list.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded by their
id, their instance reference, their viewName, or by the Class of that view
(eg, Spinner
).
targetViewName | The name of a target to ignore when running this transition. |
---|---|
exclude | Whether to add the target to or remove the target from the current list of excluded targets. |
Whether to add the given id to the list of target ids to exclude from this
transition. The exclude
parameter specifies whether the target
should be added to or removed from the excluded list.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded either by their
id, or by their instance reference, or by the Class of that view
(eg, Spinner
).
targetId | The id of a target to ignore when running this transition. |
---|---|
exclude | Whether to add the target to or remove the target from the current list of excluded targets. |
Whether to add the given type to the list of types to exclude from this
transition. The exclude
parameter specifies whether the target
type should be added to or removed from the excluded list.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded either by their
id, or by their instance reference, or by the Class of that view
(eg, Spinner
).
type | The type to ignore when running this transition. |
---|---|
exclude | Whether to add the target type to or remove it from the current list of excluded target types. |
Whether to add the given target to the list of targets to exclude from this
transition. The exclude
parameter specifies whether the target
should be added to or removed from the excluded list.
Excluding targets is a general mechanism for allowing transitions to run on
a view hierarchy while skipping target views that should not be part of
the transition. For example, you may want to avoid animating children
of a specific ListView or Spinner. Views can be excluded either by their
id, or by their instance reference, or by the Class of that view
(eg, Spinner
).
target | The target to ignore when running this transition. |
---|---|
exclude | Whether to add the target to or remove the target from the current list of excluded targets. |
Returns the duration set on this transition. If no duration has been set, the returned value will be negative, indicating that resulting animators will retain their own durations.
Returns the epicenter as specified by the
Transition.EpicenterCallback
or null if no callback exists.
Transition.EpicenterCallback
or null if no callback exists.Returns the callback used to find the epicenter of the Transition.
Transitions like Explode
use a point or Rect to orient
the direction of travel. This is called the epicenter of the Transition and is
typically centered on a touched View. The
Transition.EpicenterCallback
allows a Transition to
dynamically retrieve the epicenter during a Transition.
Returns the interpolator set on this transition. If no interpolator has been set, the returned value will be null, indicating that resulting animators will retain their own interpolators.
Returns the name of this Transition. This name is used internally to distinguish between different transitions to determine when interrupting transitions overlap. For example, a ChangeBounds running on the same target view as another ChangeBounds should determine whether the old transition is animating to different end values and should be canceled in favor of the new transition.
By default, a Transition's name is simply the value of getName()
,
but subclasses are free to override and return something different.
Returns the TransitionPropagation
used to calculate Animator start
delays.
When a Transition affects several Views like Explode
or
Slide
, there may be a desire to have a "wave-front" effect
such that the Animator start delay depends on position of the View. The
TransitionPropagation specifies how the start delays are calculated.
TransitionPropagation
used to calculate Animator start
delays. This is null by default.
Returns the startDelay set on this transition. If no startDelay has been set, the returned value will be negative, indicating that resulting animators will retain their own startDelays.
Returns the list of target IDs that this transition limits itself to
tracking and animating. If the list is null or empty for
getTargetIds()
, getTargets()
, getTargetViewNames()
, and
getTargetTypes()
then this transition is
not limited to specific views, and will handle changes to any views
in the hierarchy of a scene change.
Returns the list of target viewNames that this transition limits itself to
tracking and animating. If the list is null or empty for
getTargetIds()
, getTargets()
, getTargetViewNames()
, and
getTargetTypes()
then this transition is
not limited to specific views, and will handle changes to any views
in the hierarchy of a scene change.
Returns the list of target viewNames that this transition limits itself to
tracking and animating. If the list is null or empty for
getTargetIds()
, getTargets()
, getTargetViewNames()
, and
getTargetTypes()
then this transition is
not limited to specific views, and will handle changes to any views
in the hierarchy of a scene change.
Returns the list of target views that this transition limits itself to
tracking and animating. If the list is null or empty for
getTargetIds()
, getTargets()
, getTargetViewNames()
, and
getTargetTypes()
then this transition is
not limited to specific views, and will handle changes to any views
in the hierarchy of a scene change.
Returns the set of property names used stored in the TransitionValues
object passed into captureStartValues(TransitionValues)
that
this transition cares about for the purposes of canceling overlapping animations.
When any transition is started on a given scene root, all transitions
currently running on that same scene root are checked to see whether the
properties on which they based their animations agree with the end values of
the same properties in the new transition. If the end values are not equal,
then the old animation is canceled since the new transition will start a new
animation to these new values. If the values are equal, the old animation is
allowed to continue and no new animation is started for that transition.
A transition does not need to override this method. However, not doing so will mean that the cancellation logic outlined in the previous paragraph will be skipped for that transition, possibly leading to artifacts as old transitions and new transitions on the same targets run in parallel, animating views toward potentially different end values.
TransitionValues
. The default implementation returns null
.
This method can be called by transitions to get the TransitionValues for any particular view during the transition-playing process. This might be necessary, for example, to query the before/after state of related views for a given transition.
Removes a listener from the set listening to this animation.
listener | the listener to be removed from the current set of listeners for this transition. |
---|
Removes the given targetId from the list of ids that this Transition is interested in animating.
targetId | The id of a target view, must be a positive number. |
---|
transitionSet.addTransitions(new Fade()).removeTargetId(someId);
Removes the given target from the list of targets that this Transition is interested in animating.
target | The target view, must be non-null. |
---|
transitionSet.addTransitions(new Fade()).removeTarget(someView);
Removes the given targetName from the list of viewNames that this Transition is interested in animating.
targetName | The viewName of a target view, must not be null. |
---|
transitionSet.addTransitions(new Fade()).removeTargetName(someName);
Removes the given target from the list of targets that this Transition is interested in animating.
target | The type of the target view, must be non-null. |
---|
transitionSet.addTransitions(new Fade()).removeTarget(someType);
Sets the duration of this transition. By default, there is no duration (indicated by a negative number), which means that the Animator created by the transition will have its own specified duration. If the duration of a Transition is set, that duration will override the Animator duration.
duration | The length of the animation, in milliseconds. |
---|
Sets the callback to use to find the epicenter of a Transition. A null value indicates
that there is no epicenter in the Transition and onGetEpicenter() will return null.
Transitions like Explode
use a point or Rect to orient
the direction of travel. This is called the epicenter of the Transition and is
typically centered on a touched View. The
Transition.EpicenterCallback
allows a Transition to
dynamically retrieve the epicenter during a Transition.
epicenterCallback | The callback to use to find the epicenter of the Transition. |
---|
Sets the interpolator of this transition. By default, the interpolator is null, which means that the Animator created by the transition will have its own specified interpolator. If the interpolator of a Transition is set, that interpolator will override the Animator interpolator.
interpolator | The time interpolator used by the transition |
---|
Sets the order in which Transition matches View start and end values.
The default behavior is to match first by getViewName()
,
then by View instance, then by getId()
and finally
by its item ID if it is in a direct child of ListView. The caller can
choose to have only some or all of the values of MATCH_INSTANCE
,
MATCH_VIEW_NAME
, MATCH_ITEM_ID
, and MATCH_ID
. Only
the match algorithms supplied will be used to determine whether Views are the
the same in both the start and end Scene. Views that do not match will be considered
as entering or leaving the Scene.
matches | A list of zero or more of MATCH_INSTANCE ,
MATCH_VIEW_NAME , MATCH_ITEM_ID , and MATCH_ID .
If none are provided, then the default match order will be set.
|
---|
Sets the method for determining Animator start delays.
When a Transition affects several Views like Explode
or
Slide
, there may be a desire to have a "wave-front" effect
such that the Animator start delay depends on position of the View. The
TransitionPropagation specifies how the start delays are calculated.
transitionPropagation | The class used to determine the start delay of Animators created by this Transition. A null value indicates that no delay should be used. |
---|
Sets the startDelay of this transition. By default, there is no delay (indicated by a negative number), which means that the Animator created by the transition will have its own specified startDelay. If the delay of a Transition is set, that delay will override the Animator delay.
startDelay | The length of the delay, in milliseconds. |
---|
Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression:
getClass().getName() + '@' + Integer.toHexString(hashCode())
See Writing a useful
toString
method
if you intend implementing your own toString
method.