android.view
public
class
android.view.TouchDelegate
Helper class to handle situations where you want a view to have a larger touch area than its
actual view bounds. The view whose touch area is changed is called the delegate view. This
class should be used by an ancestor of the delegate. To use a TouchDelegate, first create an
instance that specifies the bounds that should be mapped to the delegate and the delegate
view itself.
The ancestor should then forward all of its touch events received in its
onTouchEvent(MotionEvent) to onTouchEvent(MotionEvent).
Summary
Constants
|
|
|
Value |
|
int |
ABOVE |
The touchable region of the View extends above its actual extent. |
1 |
0x00000001 |
int |
BELOW |
The touchable region of the View extends below its actual extent. |
2 |
0x00000002 |
int |
TO_LEFT |
The touchable region of the View extends to the left of its
actual extent. |
4 |
0x00000004 |
int |
TO_RIGHT |
The touchable region of the View extends to the right of its
actual extent. |
8 |
0x00000008 |
Public Constructors
Public Methods
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
Details
Constants
public
static
final
int
ABOVE
The touchable region of the View extends above its actual extent.
Constant Value:
1
(0x00000001)
public
static
final
int
BELOW
The touchable region of the View extends below its actual extent.
Constant Value:
2
(0x00000002)
public
static
final
int
TO_LEFT
The touchable region of the View extends to the left of its
actual extent.
Constant Value:
4
(0x00000004)
public
static
final
int
TO_RIGHT
The touchable region of the View extends to the right of its
actual extent.
Constant Value:
8
(0x00000008)
Public Constructors
public
TouchDelegate(Rect bounds, View delegateView)
Constructor
Parameters
bounds
| Bounds in local coordinates of the containing view that should be mapped to
the delegate view |
delegateView
| The view that should receive motion events
|
Public Methods
public
boolean
onTouchEvent(MotionEvent event)
Will forward touch events to the delegate view if the event is within the bounds
specified in the constructor.
Parameters
event
| The touch event to forward |
Returns
- True if the event was forwarded to the delegate, false otherwise.