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Commit 1e8dfc73 authored by Dianne Hackborn's avatar Dianne Hackborn
Browse files

Fix crash when MotionEvent is initialized with more than 2 fingers, and bump 

its initial size to allow for up to 5 fingers.
parent 838ffacd

core/java/android/view/MotionEvent.java

+19 −3
Original line number Original line Diff line number Diff line
@@ -185,7 +185,12 @@ public final class MotionEvent implements Parcelable { 
     */

     */

    static public final int NUM_SAMPLE_DATA = 4;

    static public final int NUM_SAMPLE_DATA = 4;

    

    

    static private final int BASE_AVAIL_POINTERS = 2;

    /**

     * Number of possible pointers.

     * @hide

     */

    static public final int BASE_AVAIL_POINTERS = 5;

    

    static private final int BASE_AVAIL_SAMPLES = 8;

    static private final int BASE_AVAIL_SAMPLES = 8;

    

    

    static private final int MAX_RECYCLED = 10;

    static private final int MAX_RECYCLED = 10;
@@ -290,8 +295,19 @@ public final class MotionEvent implements Parcelable { 
        ev.mNumPointers = pointers;

        ev.mNumPointers = pointers;

        ev.mNumSamples = 1;

        ev.mNumSamples = 1;

        

        

        System.arraycopy(inPointerIds, 0, ev.mPointerIdentifiers, 0, pointers);

        int[] pointerIdentifiers = ev.mPointerIdentifiers;

        System.arraycopy(inData, 0, ev.mDataSamples, 0, pointers * NUM_SAMPLE_DATA);

        if (pointerIdentifiers.length < pointers) {

            ev.mPointerIdentifiers = pointerIdentifiers = new int[pointers];

        }

        System.arraycopy(inPointerIds, 0, pointerIdentifiers, 0, pointers);

        

        final int ND = pointers * NUM_SAMPLE_DATA;

        float[] dataSamples = ev.mDataSamples;

        if (dataSamples.length < ND) {

            ev.mDataSamples = dataSamples = new float[ND];

        }

        System.arraycopy(inData, 0, dataSamples, 0, ND);

        

        ev.mTimeSamples[0] = eventTime;

        ev.mTimeSamples[0] = eventTime;





        if (DEBUG_POINTERS) {

        if (DEBUG_POINTERS) {