i have implemented OnTouchListener for my view which uses the
gestureDetecter.
here i am posting my code..
########### Code starts here #################
public WebText(Context context) {
super(context);
initilizeAll(context);
}
public void initilizeAll(Context context) {
this.context = context;
viewGestureDetector = new GestureDetector(new
MyGestureListener());
swip = (SwipInterfase) context;
this.setOnTouchListener(this);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
if (viewGestureDetector.onTouchEvent(event)) {
return true;
}
return false;
}
class MyGestureListener extends SimpleOnGestureListener {
@Override
public boolean onSingleTapUp(MotionEvent e) {
return swip.onSingleTap(e);
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float
velocityX,
float velocityY) {
try {
if (Math.abs(e1.getY() - e2.getY()) >
SWIPE_MAX_OFF_PATH) {
return false;
}
// right to left swipe
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) >
SWIPE_THRESHOLD_VELOCITY) {
Toast.makeText(context, "Left Swipe",
Toast.LENGTH_SHORT)
.show();
swip.leftSwip();
} else if (e2.getX() - e1.getX() >
SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) >
SWIPE_THRESHOLD_VELOCITY) {
Toast.makeText(context, "Right Swipe",
Toast.LENGTH_SHORT)
.show();
swip.rightSwip();
}
} catch (Exception e) {
// nothing
}
return true;
}
}
########### Code ends here #################
where as it works properly on android 2.3 and lower versions..
when i tried to install in HonyComb(xoom skin emulator) it throwing
NullPointerException exception..(see at below..)
please any help....?
Thanks in Advance...
03-08 14:34:10.768: ERROR/AndroidRuntime(779): FATAL EXCEPTION: main
03-08 14:34:10.768: ERROR/AndroidRuntime(779):
java.lang.NullPointerException
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.GestureDetector.onTouchEvent(GestureDetector.java:576)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
com.jinibook.android.view.WebText.onTouch(WebText.java:56)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.View.dispatchTouchEvent(View.java:4458)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:
1469)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1237)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:
1475)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1250)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:
1475)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1250)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:
1475)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1250)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:
1475)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1250)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:
1475)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1250)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
com.android.internal.policy.impl.PhoneWindow
$DecorView.superDispatchTouchEvent(PhoneWindow.java:1706)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:
1276)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.app.Activity.dispatchTouchEvent(Activity.java:2258)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
com.android.internal.policy.impl.PhoneWindow
$DecorView.dispatchTouchEvent(PhoneWindow.java:1686)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewRoot.deliverPointerEvent(ViewRoot.java:2235)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.view.ViewRoot.handleMessage(ViewRoot.java:1927)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.os.Handler.dispatchMessage(Handler.java:99)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.os.Looper.loop(Looper.java:126)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
android.app.ActivityThread.main(ActivityThread.java:3900)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
java.lang.reflect.Method.invokeNative(Native Method)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
java.lang.reflect.Method.invoke(Method.java:491)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:841)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
03-08 14:34:10.768: ERROR/AndroidRuntime(779): at
dalvik.system.NativeStart.main(Native Method)
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