Crashes when tapping with more fingers

[tacone]

WorkspaceView crashes when tapping very fast one child window.

To reproduce tap the screen fast using at least two o three fingers, (first with the index finger, then with the second finger, then with the third finger).

I haven't been able to reproduce the issue with just 1 finger, and with two it is difficult to reproduce (at least on a fast smartphone). With three fingers is pretty easy though.

Full stacktrace:

27782 workspace D Intercepted a touch event
27782 MotionEvent V ArrayIndexOutOfBoundsException!!! pointerIndex -1; i -4
27782 AndroidRuntime D Shutting down VM
27782 dalvikvm W threadid=1: thread exiting with uncaught exception (group=0x40025a70)
AndroidRuntime E FATAL EXCEPTION: main
27490 AndroidRuntime E java.lang.ArrayIndexOutOfBoundsException
27490 AndroidRuntime E at android.view.MotionEvent.getX(MotionEvent.java:783)
27490 AndroidRuntime E at org.jared.commons.ui.WorkspaceView.handleInterceptMove(WorkspaceView.java:497)
27490 AndroidRuntime E at org.jared.commons.ui.WorkspaceView.onInterceptTouchEvent(WorkspaceView.java:453)
27490 AndroidRuntime E at org.jared.commons.ui.WorkspaceView.onTouchEvent(WorkspaceView.java:592)
27490 AndroidRuntime E at android.view.View.dispatchTouchEvent(View.java:3778)
27490 AndroidRuntime E at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:919)
27490 AndroidRuntime E at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
27490 AndroidRuntime E at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
27490 AndroidRuntime E at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
27490 AndroidRuntime E at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1716)
27490 AndroidRuntime E at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1124)
27490 AndroidRuntime E at android.app.Activity.dispatchTouchEvent(Activity.java:2125)
27490 AndroidRuntime E at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1700)
27490 AndroidRuntime E at android.view.ViewRoot.handleMessage(ViewRoot.java:1802)
27490 AndroidRuntime E at android.os.Handler.dispatchMessage(Handler.java:99)
27490 AndroidRuntime E at android.os.Looper.loop(Looper.java:143)
27490 AndroidRuntime E at android.app.ActivityThread.main(ActivityThread.java:5068)
27490 AndroidRuntime E at java.lang.reflect.Method.invokeNative(Native Method)
27490 AndroidRuntime E at java.lang.reflect.Method.invoke(Method.java:521)
27490 AndroidRuntime E at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
27490 AndroidRuntime E at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
27490 AndroidRuntime E at dalvik.system.NativeStart.main(Native Method)

[ol0]

Hello,
My suggestion for quick fix for this one is to add:
"if ( pointerIndex == -1 ) return;"
at the beginning of handleScrollMove and handleInterceptMove.

Bug happens because findPointerIndex can sometimes return "-1". It seems to work fine with this fix.