Crash on ZoomFrameLayout onTouchEvent Method

[abdulmic]

On Scaling/Zooming the timeline it sometimes works fine but sometimes it crashes. with below stack trace

java.lang.NullPointerException: Parameter specified as non-null is null: method com.meitu.timeline.widget.ZoomFrameLayout$gestureListener$1.onScroll, parameter e1 at com.meitu.timeline.widget.ZoomFrameLayout$gestureListener$1.onScroll(Unknown Source:2) at android.view.GestureDetector.onTouchEvent(GestureDetector.java:731) at com.meitu.timeline.widget.ZoomFrameLayout.onTouchEvent(ZoomFrameLayout.kt:325) at android.view.View.dispatchTouchEvent(View.java:14368) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3857) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3535) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3863) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:3551) at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:770) at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1952) at android.app.Activity.dispatchTouchEvent(Activity.java:4038) at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:70) at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:728) at android.view.View.dispatchPointerEvent(View.java:14636) at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:6582) at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:6360) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5796) at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5849) at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5815) at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5971) at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5823) at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:6028) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5796) at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5849) at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5815) at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5823) at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5796) at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:9032) at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:8889) at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:8842) at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:9169) at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:194) at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:183) at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:9109) at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:9196)