public abstract class VisibilityPropagation extends TransitionPropagation
TransitionPropagation
s that care about
View Visibility and the center position of the View.Constructor and Description |
---|
VisibilityPropagation() |
Modifier and Type | Method and Description |
---|---|
void |
captureValues(TransitionValues values)
Captures the values in the start or end scene for the properties that this
transition propagation monitors.
|
String[] |
getPropagationProperties()
Returns the set of property names stored in the
TransitionValues
object passed into TransitionPropagation.captureValues(TransitionValues) that
this transition propagation cares about for the purposes of preventing
duplicate capturing of property values. |
int |
getViewVisibility(TransitionValues values)
Returns
View.getVisibility() for the View at the time the values
were captured. |
int |
getViewX(TransitionValues values)
Returns the View's center x coordinate, relative to the screen, at the time the values
were captured.
|
int |
getViewY(TransitionValues values)
Returns the View's center y coordinate, relative to the screen, at the time the values
were captured.
|
getStartDelay
public void captureValues(TransitionValues values)
TransitionPropagation
TransitionPropagation.getStartDelay(ViewGroup, Transition, 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
TransitionPropagation.getStartDelay(ViewGroup, Transition, TransitionValues, TransitionValues)
.
method to determine the start delay.
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.
captureValues
in class TransitionPropagation
values
- 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.public String[] getPropagationProperties()
TransitionPropagation
TransitionValues
object passed into TransitionPropagation.captureValues(TransitionValues)
that
this transition propagation cares about for the purposes of preventing
duplicate capturing of property values.
A TransitionPropagation
must override this method to prevent
duplicate capturing of values and must contain at least one
getPropagationProperties
in class TransitionPropagation
TransitionValues
.public int getViewVisibility(TransitionValues values)
View.getVisibility()
for the View at the time the values
were captured.values
- The TransitionValues captured at the start or end of the Transition.View.getVisibility()
for the View at the time the values
were captured.public int getViewX(TransitionValues values)
values
- The TransitionValues captured at the start or end of the Transition.public int getViewY(TransitionValues values)
values
- The TransitionValues captured at the start or end of the Transition.