PathMotion
public
abstract
class
PathMotion
extends Object
Known direct subclasses
ArcMotion |
A PathMotion that generates a curved path along an arc on an imaginary circle containing
the two points.
|
PatternPathMotion |
A PathMotion that takes a Path pattern and applies it to the separation between two points.
|
|
This base class can be extended to provide motion along a Path to Transitions.
Transitions such as ChangeBounds
move Views, typically
in a straight path between the start and end positions. Applications that desire to
have these motions move in a curve can change how Views interpolate in two dimensions
by extending PathMotion and implementing getPath(float, float, float, float)
.
This may be used in XML as an element inside a transition.
<changeBounds>
<pathMotion class="my.app.transition.MyPathMotion"/>
</changeBounds>
Summary
Public methods |
abstract
Path
|
getPath(float startX, float startY, float endX, float endY)
Provide a Path to interpolate between two points (startX, startY) and
(endX, endY) .
|
Inherited methods |
From class
java.lang.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
PathMotion
public PathMotion ()
PathMotion
public PathMotion (Context context,
AttributeSet attrs)
Parameters |
context |
Context |
attrs |
AttributeSet |
Public methods
getPath
public abstract Path getPath (float startX,
float startY,
float endX,
float endY)
Provide a Path to interpolate between two points (startX, startY)
and
(endX, endY)
. This allows controlled curved motion along two dimensions.
Parameters |
startX |
float : The x coordinate of the starting point. |
startY |
float : The y coordinate of the starting point. |
endX |
float : The x coordinate of the ending point. |
endY |
float : The y coordinate of the ending point. |
Returns |
Path |
A Path along which the points should be interpolated. The returned Path
must start at point (startX, startY) , typically using
Path.moveTo(float, float) and end at (endX, endY) . |