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Commit e39304db authored by lijilou's avatar lijilou Committed by Jilou li
Browse files

Fix array index out of bounds exception problem. 

The getPrimaryPointerId method may return the  INVALID_POINTER_ID(-1) value and result to  array index out of bounds exception.The crash log:
java.lang.ArrayIndexOutOfBoundsException: length=32; index=-1
at com.android.server.accessibility.gestures.TouchState$ReceivedPointerTracker.getReceivedPointerDownX(TouchState.java:482)
at com.android.server.accessibility.gestures.TouchExplorer.handleActionMoveStateTouchExploring(TouchExplorer.java:910)
.....

Test: monkey test
Flag: EXEMPT bugfix
Bug: 399557645
Change-Id: Ib0b14471953d8f78cf98122dd868be8b80059a75
parent 42401c8b

services/accessibility/java/com/android/server/accessibility/gestures/TouchExplorer.java

+3 −0
Original line number Diff line number Diff line
@@ -901,6 +901,9 @@ public class TouchExplorer extends BaseEventStreamTransformation 
                    mSendHoverEnterAndMoveDelayed.cancel();

                    mSendHoverExitDelayed.cancel();

                }

                if (pointerIndex < 0) {

                    return;

                }

                // If the user is touch exploring the second pointer may be

                // performing a double tap to activate an item without need

                // for the user to lift their exploring finger.