###Reproduce steps
- Run the sample.
- Long click with three finger,
or touch back and forth with two finger and three finger. (press down a finger down, press down another one, release one finger and another hold steady.) - Exception throws.
###Exception Sample
FATAL EXCEPTION: main
Process: com.example.cardscrolltest, PID: 5689
java.lang.IllegalStateException: Could not find pointer '1' in reference point: At time 5516242: pointer 0 ACTION_DOWN: (366.000000,82.000000) to be calculated against current event: At time 5516361: pointer 1 ACTION_UP: (795.000000,100.000000).
at com.google.android.glass.touchpad.Utils.isWithinDistance(Utils.java:179)
at com.google.android.glass.touchpad.Utils.isWithinTapArea(Utils.java:145)
at com.google.android.glass.touchpad.OneFingerState.onEvent(OneFingerState.java:47)
at com.google.android.glass.touchpad.StateMachine.onEvent(StateMachine.java:100)
at com.google.android.glass.touchpad.GestureDetector.onMotionEvent(GestureDetector.java:283)
at com.example.cardscrolltest.HelloActivity.onGenericMotionEvent(HelloActivity.java:94)
at android.app.Activity.dispatchGenericMotionEvent(Activity.java:2501)
at com.example.cardscrolltest.HelloActivity.dispatchGenericMotionEvent(HelloActivity.java:85)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchGenericMotionEvent(PhoneWindow.java:2154)
at android.view.ViewRootImpl$ViewPostImeInputStage.processGenericMotionEvent(ViewRootImpl.java:3995)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3859)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3421)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3471)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3440)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3547)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3448)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3604)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3421)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3471)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3440)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3448)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3421)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3471)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3440)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3580)
at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:3740)
at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:2010)
at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:1704)
at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:1695)
at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:1987)
at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:141)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:138)
at android.os.Looper.loop(Looper.java:131)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
at dalvik.system.NativeStart.main(Native Method)
####Reported issues