com.google.android.maps
public class
public class
com.google.android.maps.TrackballGestureDetector
| java.lang.Object | ||
| com.google.android.maps.TrackballGestureDetector | ||
Analyzes a series of motion events and detects gestures. Right now only very simple gestures are detected: scroll, tap, and double-tap.
Summary
Public Constructors
| TrackballGestureDetector(Handler handler) |
Public Methods
| void | analyze(MotionEvent ev) | ||||
| Analyze a motion event. | |||||
| float | getCurrentDownX() | ||||
| This value is only defined if either isTap() is true. | |||||
| float | getCurrentDownY() | ||||
| This value is only defined if either isTap() is true. | |||||
| float | getFirstDownX() | ||||
| This value is only defined if isDoubleTap() is true. | |||||
| float | getFirstDownY() | ||||
| This value is only defined if isDoubleTap() is true. | |||||
| boolean | isDoubleTap() | ||||
| boolean | isScroll() | ||||
| boolean | isTap() | ||||
| void | registerLongPressCallback(Runnable runnable) | ||||
| Register a runnable to be called when a longPress event is detected. | |||||
| float | scrollX() | ||||
| This value is only defined if isScroll() is true. | |||||
| float | scrollY() | ||||
| This value is only defined if isScroll() is true. | |||||
Methods inherited
from class
java.lang.Object
Details
Public Constructors
public TrackballGestureDetector(Handler handler)
Public Methods
public void analyze(MotionEvent ev)
Analyze a motion event. Call this once for each motion event
that is received by a view.
Parameters
| ev | the motion event to analyze. |
|---|
public float getCurrentDownX()
This value is only defined if either isTap() is true.
Returns
- the X position of the current tap event.
public float getCurrentDownY()
This value is only defined if either isTap() is true.
Returns
- the Y position of the current tap event.
public float getFirstDownX()
This value is only defined if isDoubleTap() is true. This returns
the X position of the first down X in the double tap.
Returns
- the X position of the double tap event.
public float getFirstDownY()
This value is only defined if isDoubleTap() is true. This returns
the Y position of the first down Y in the double tap.
Returns
- the Y position of the double tap event.
public boolean isDoubleTap()
Returns
- true if the current motion event is a double-tap event.
public boolean isScroll()
Returns
- true if the current motion event is a scroll event.
public boolean isTap()
Returns
- true if the current motion event is a single-tap event.
public void registerLongPressCallback(Runnable runnable)
Register a runnable to be called when a longPress event is detected.
public float scrollX()
This value is only defined if isScroll() is true.
Returns
- the X position of the current scroll event. event.
public float scrollY()
This value is only defined if isScroll() is true.
Returns
- the Y position of the current scroll event. event.