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| android.view.GestureDetector.OnGestureListener |
 Known Indirect Subclasses
|
The listener that is used to notify when gestures occur.
If you want to listen for all the different gestures then implement
this interface. If you only want to listen for a subset it might
be easier to extend GestureDetector.SimpleOnGestureListener.
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Notified when a tap occurs with the down
MotionEvent
that triggered it. | |||||||||||
Notified of a fling event when it occurs with the initial on down
MotionEvent
and the matching up MotionEvent. | |||||||||||
Notified when a long press occurs with the initial on down
MotionEvent
that trigged it. | |||||||||||
Notified when a scroll occurs with the initial on down
MotionEvent and the
current move MotionEvent. | |||||||||||
The user has performed a down
MotionEvent and not performed
a move or up yet. | |||||||||||
Notified when a tap occurs with the up
MotionEvent
that triggered it. | |||||||||||
Notified when a tap occurs with the down MotionEvent
that triggered it. This will be triggered immediately for
every down event. All other events should be preceded by this.
| e | The down motion event. |
|---|
Notified of a fling event when it occurs with the initial on down MotionEvent
and the matching up MotionEvent. The calculated velocity is supplied along
the x and y axis in pixels per second.
| e1 | The first down motion event that started the fling. |
|---|---|
| e2 | The move motion event that triggered the current onFling. |
| velocityX | The velocity of this fling measured in pixels per second along the x axis. |
| velocityY | The velocity of this fling measured in pixels per second along the y axis. |
Notified when a long press occurs with the initial on down MotionEvent
that trigged it.
| e | The initial on down motion event that started the longpress. |
|---|
Notified when a scroll occurs with the initial on down MotionEvent and the
current move MotionEvent. The distance in x and y is also supplied for
convenience.
| e1 | The first down motion event that started the scrolling. |
|---|---|
| e2 | The move motion event that triggered the current onScroll. |
| distanceX | The distance along the X axis that has been scrolled since the last
call to onScroll. This is NOT the distance between e1
and e2. |
| distanceY | The distance along the Y axis that has been scrolled since the last
call to onScroll. This is NOT the distance between e1
and e2. |
The user has performed a down MotionEvent and not performed
a move or up yet. This event is commonly used to provide visual
feedback to the user to let them know that their action has been
recognized i.e. highlight an element.
| e | The down motion event |
|---|
Notified when a tap occurs with the up MotionEvent
that triggered it.
| e | The up motion event that completed the first tap |
|---|