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Commit 35b88900 authored by Yorke Lee's avatar Yorke Lee
Browse files

Fix IOOB exception in ViewDragHelper 

If findPointerIndex returns -1, ignore the motion event. The
equivalent fix is done for other handlers of motion events as well.

Bug: 18186775

Change-Id: Ia7548335eeb84310510260381a8bcedf6556aa40
parent 612f818e

src/com/android/dialer/widget/ViewDragHelper.java

+7 −1
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ import android.content.Context; 
import android.support.v4.view.MotionEventCompat;

import android.support.v4.view.VelocityTrackerCompat;

import android.support.v4.view.ViewCompat;

import android.util.Log;

import android.view.MotionEvent;

import android.view.VelocityTracker;

import android.view.View;
@@ -1176,7 +1177,12 @@ public class ViewDragHelper { 


            case MotionEvent.ACTION_MOVE: {

                if (mDragState == STATE_DRAGGING) {

                    final int index = MotionEventCompat.findPointerIndex(ev, mActivePointerId);

                    int index = MotionEventCompat.findPointerIndex(ev, mActivePointerId);

                    if (index < 0) {

                        Log.e(TAG, "Pointer index for id " + mActivePointerId + " not found."

                                + " Skipping MotionEvent");

                        return;

                    }

                    final float x = MotionEventCompat.getX(ev, index);

                    final float y = MotionEventCompat.getY(ev, index);

                    final int idx = (int) (x - mLastMotionX[mActivePointerId]);