Fix buttons getting stuck in scroll views

Author: j-piasecki

android/src/main/java/com/swmansion/gesturehandler/core/GestureHandler.kt

@@ -657,6 +657,7 @@ open class GestureHandler<ConcreteGestureHandlerT : GestureHandler<ConcreteGestu
 
   fun fail() {
     if (state == STATE_ACTIVE || state == STATE_UNDETERMINED || state == STATE_BEGAN) {
+      onFail()
       moveToState(STATE_FAILED)
     }
   }
@@ -710,6 +711,7 @@ open class GestureHandler<ConcreteGestureHandlerT : GestureHandler<ConcreteGestu
   protected open fun onStateChange(newState: Int, previousState: Int) {}
   protected open fun onReset() {}
   protected open fun onCancel() {}
+  protected open fun onFail() {}
 
   private fun isButtonInConfig(clickedButton: Int): Boolean {
     if (mouseButton == 0) {

android/src/main/java/com/swmansion/gesturehandler/core/NativeViewGestureHandler.kt

@@ -148,7 +148,7 @@ class NativeViewGestureHandler : GestureHandler<NativeViewGestureHandler>() {
     }
   }
 
-  override fun onCancel() {
+  private fun dispatchCancelEventToView() {
     val time = SystemClock.uptimeMillis()
     val event = MotionEvent.obtain(time, time, MotionEvent.ACTION_CANCEL, 0f, 0f, 0).apply {
       action = MotionEvent.ACTION_CANCEL
@@ -157,6 +157,10 @@ class NativeViewGestureHandler : GestureHandler<NativeViewGestureHandler>() {
     event.recycle()
   }
 
+  override fun onCancel() = dispatchCancelEventToView()
+
+  override fun onFail() = dispatchCancelEventToView()
+
   override fun onReset() {
     this.hook = defaultHook
   }