Pinch to zoom - Githubissues

Hey, First: Thanks for your awesome library. It really helps a lot. But I have a strange error and dont know how to handle it. My initialization of the scrollviewGallery happens after a doubletap, recongized by a TouchListener. Then I simply add the bitmaps, enable zoom and request the SupportedFragmentManager:

case MotionEvent.ACTION_DOWN:

                    if(mTime != 0f && System.currentTimeMillis() - mTime<160f){
                        Log.d(TAG,"doubletap");
                        List<MediaInfo> infos = new ArrayList<>(mBitmaps.size());
                        for(Bitmap b : mBitmaps){
                            infos.add(MediaInfo.mediaLoader(new DefaultImageLoader(b)));
                        }
                       scrollGalleryView.setThumbnailSize(100)
                                .setZoom(true)
                                .setFragmentManager(getActivity().getSupportFragmentManager())
                                .addMedia(infos);
                        //scrollGalleryView.bringToFront();
                        scrollGalleryView.setVisibility(View.VISIBLE);
                        singleViewContainer.setVisibility(View.GONE);
                        mTime = System.currentTimeMillis();
                        break;
                    }else{
                        mTime = System.currentTimeMillis();
                    }
                    mScrollView.setScrollingEnabled(false);
                    lastImagePosition = event.getX();
                    break;

The Gallery shows up, but if I perform a "pinch to zoom" action, I get an Exception with:

03-31 17:46:56.893 12711-12711/de.reno.app E/AndroidRuntime: FATAL EXCEPTION: main Process: de.reno.app, PID: 12711 java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 at android.support.v4.widget.ViewDragHelper.saveLastMotion(ViewDragHelper.java:849) at android.support.v4.widget.ViewDragHelper.shouldInterceptTouchEvent(ViewDragHelper.java:1057) at android.support.v4.widget.DrawerLayout.onInterceptTouchEvent(DrawerLayout.java:1438) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2175) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2632) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2321) at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:413) at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1808) at android.app.Activity.dispatchTouchEvent(Activity.java:3061) at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:63) at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:375) at android.view.View.dispatchPointerEvent(View.java:10243) at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4438) at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4306) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853) at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3906) at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3872) at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3999) at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3880) at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4056) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853) at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3906) at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3872) at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3880) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853) at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6246) at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6220) at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6181) at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6349) at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:176) at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:6320) at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:6372) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874) at android.view.Choreographer.doCallbacks(Choreographer.java:686) at android.view.Choreographer.doFrame(Choreographer.java:615) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6119) at java.lang.reflect.Method.invoke(Native Method) 03-31 17:46:56.893 12711-12711/de.reno.app E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

Do you have any idea how I can handle the pinch to zoom gesture?

VEINHORN / ScrollGalleryView

Pinch to zoom #46