ChangeImageTransform


public class ChangeImageTransform
extends Transition

java.lang.Object
   ↳ android.transition.Transition
     ↳ android.transition.ChangeImageTransform


This Transition captures an ImageView's matrix before and after the scene change and animates it during the transition.

In combination with ChangeBounds, ChangeImageTransform allows ImageViews that change size, shape, or ImageView.ScaleType to animate contents smoothly.

Summary

Inherited XML attributes

android:duration Amount of time (in milliseconds) that the transition should run. 
android:interpolator Interpolator to be used in the animations spawned by this transition. 
android:startDelay Delay in milliseconds before the transition starts. 

Inherited constants

int MATCH_ID

With setMatchOrder(int), chooses to match by View.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_NAME

With setMatchOrder(int), chooses to match by View.getTransitionName().

Public constructors

ChangeImageTransform()
ChangeImageTransform(Context context, AttributeSet attrs)

Public methods

void captureEndValues(TransitionValues transitionValues)

Captures the values in the end scene for the properties that this transition monitors.

void captureStartValues(TransitionValues transitionValues)

Captures the values in the start scene for the properties that this transition monitors.

Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues, TransitionValues endValues)

Creates an Animator for ImageViews moving, changing dimensions, and/or changing ImageView.ScaleType.

String[] getTransitionProperties()

Returns the set of property names used stored in the TransitionValues object passed into captureStartValues(android.transition.TransitionValues) that this transition cares about for the purposes of canceling overlapping animations.

Inherited methods

Transition addListener(Transition.TransitionListener listener)

Adds a listener to the set of listeners that are sent events through the life of an animation, such as start, repeat, and end.

Transition addTarget(View target)

Sets the target view instances that this Transition is interested in animating.

Transition addTarget(int targetId)

Adds the id of a target view that this Transition is interested in animating.

Transition addTarget(Class<T> targetType)

Adds the Class of a target view that this Transition is interested in animating.

Transition addTarget(String targetName)

Adds the transitionName of a target view that this Transition is interested in animating.

boolean canRemoveViews()
abstract void captureEndValues(TransitionValues transitionValues)

Captures the values in the end scene for the properties that this transition monitors.

abstract void captureStartValues(TransitionValues transitionValues)

Captures the values in the start scene for the properties that this transition monitors.

Transition clone()

Creates and returns a copy of this object.

Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues, TransitionValues endValues)

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.

Transition excludeChildren(int targetId, boolean exclude)

Whether to add the children of the given id to the list of targets to exclude from this transition.

Transition excludeChildren(Class<T> type, boolean exclude)

Whether to add the given type to the list of types whose children should be excluded from this transition.

Transition excludeChildren(View target, boolean exclude)

Whether to add the children of given target to the list of target children to exclude from this transition.

Transition excludeTarget(View target, boolean exclude)

Whether to add the given target to the list of targets to exclude from this transition.

Transition excludeTarget(Class<T> type, boolean exclude)

Whether to add the given type to the list of types to exclude from this transition.

Transition excludeTarget(String targetName, boolean exclude)

Whether to add the given transitionName to the list of target transitionNames to exclude from this transition.

Transition excludeTarget(int targetId, boolean exclude)

Whether to add the given id to the list of target ids to exclude from this transition.

long getDuration()

Returns the duration set on this transition.

Rect getEpicenter()

Returns the epicenter as specified by the Transition.EpicenterCallback or null if no callback exists.

Transition.EpicenterCallback getEpicenterCallback()

Returns the callback used to find the epicenter of the Transition.

TimeInterpolator getInterpolator()

Returns the interpolator set on this transition.

String getName()

Returns the name of this Transition.

PathMotion getPathMotion()

Returns the algorithm object used to interpolate along two dimensions.

TransitionPropagation getPropagation()

Returns the TransitionPropagation used to calculate Animator start delays.

long getStartDelay()

Returns the startDelay set on this transition.

List<Integer> getTargetIds()

Returns the list of target IDs that this transition limits itself to tracking and animating.

List<String> getTargetNames()

Returns the list of target transitionNames that this transition limits itself to tracking and animating.

List<Class<T>> getTargetTypes()

Returns the list of target transitionNames that this transition limits itself to tracking and animating.

List<View> getTargets()

Returns the list of target views that this transition limits itself to tracking and animating.

String[] getTransitionProperties()

Returns the set of property names used stored in the TransitionValues object passed into captureStartValues(android.transition.TransitionValues) that this transition cares about for the purposes of canceling overlapping animations.

TransitionValues getTransitionValues(View view, boolean start)

This method can be called by transitions to get the TransitionValues for any particular view during the transition-playing process.

boolean isTransitionRequired(TransitionValues startValues, TransitionValues endValues)

Returns whether or not the transition should create an Animator, based on the values captured during captureStartValues(android.transition.TransitionValues) and captureEndValues(android.transition.TransitionValues).

Transition removeListener(Transition.TransitionListener listener)

Removes a listener from the set listening to this animation.

Transition removeTarget(int targetId)

Removes the given targetId from the list of ids that this Transition is interested in animating.

Transition removeTarget(View target)

Removes the given target from the list of targets that this Transition is interested in animating.

Transition removeTarget(String targetName)

Removes the given targetName from the list of transitionNames that this Transition is interested in animating.

Transition removeTarget(Class<T> target)

Removes the given target from the list of targets that this Transition is interested in animating.

Transition setDuration(long duration)

Sets the duration of this transition.

void setEpicenterCallback(Transition.EpicenterCallback epicenterCallback)

Sets the callback to use to find the epicenter of a Transition.

Transition setInterpolator(TimeInterpolator interpolator)

Sets the interpolator of this transition.

void setMatchOrder(int... matches)

Sets the order in which Transition matches View start and end values.

void setPathMotion(PathMotion pathMotion)

Sets the algorithm used to calculate two-dimensional interpolation.

void setPropagation(TransitionPropagation transitionPropagation)

Sets the method for determining Animator start delays.

Transition setStartDelay(long startDelay)

Sets the startDelay of this transition.

String toString()

Returns a string representation of the object.

Object clone()

Creates and returns a copy of this object.

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

void finalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

final Class<?> getClass()

Returns the runtime class of this Object.

int hashCode()

Returns a hash code value for the object.

final void notify()

Wakes up a single thread that is waiting on this object's monitor.

final void notifyAll()

Wakes up all threads that are waiting on this object's monitor.

String toString()

Returns a string representation of the object.

final void wait(long timeoutMillis, int nanos)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait(long timeoutMillis)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait()

Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

ChangeImageTransform

Added in API level 21
public ChangeImageTransform ()

ChangeImageTransform

Added in API level 21
public ChangeImageTransform (Context context, 
                AttributeSet attrs)

Parameters
context Context

attrs AttributeSet

Public methods

captureEndValues

Added in API level 21
public void captureEndValues (TransitionValues transitionValues)

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(android.view.ViewGroup, android.transition.TransitionValues, android.transition.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, android.transition.TransitionValues, android.transition.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.

Parameters
transitionValues 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.

captureStartValues

Added in API level 21
public void captureStartValues (TransitionValues transitionValues)

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(android.view.ViewGroup, android.transition.TransitionValues, android.transition.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, android.transition.TransitionValues, android.transition.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.

Parameters
transitionValues 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.

createAnimator

Added in API level 21
public Animator createAnimator (ViewGroup sceneRoot, 
                TransitionValues startValues, 
                TransitionValues endValues)

Creates an Animator for ImageViews moving, changing dimensions, and/or changing ImageView.ScaleType.

Parameters
sceneRoot ViewGroup: The root of the transition hierarchy. This value cannot be null.

startValues TransitionValues: The values for a specific target in the start scene. This value may be null.

endValues TransitionValues: The values for the target in the end scene. This value may be null.

Returns
Animator An Animator to move an ImageView or null if the View is not an ImageView, the Drawable changed, the View is not VISIBLE, or there was no change.

getTransitionProperties

Added in API level 21
public String[] getTransitionProperties ()

Returns the set of property names used stored in the TransitionValues object passed into captureStartValues(android.transition.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.

Returns
String[] An array of property names as described in the class documentation for TransitionValues. The default implementation returns null.