Fixing extra card -sometimes- swiped

build.gradle

@@ -5,8 +5,8 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.0.0-beta5'
-        classpath 'com.novoda:bintray-release:0.3.4'
+        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.novoda:bintray-release:0.8.0'
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Dec 28 10:00:20 PST 2015
+#Tue Jan 23 09:50:54 CET 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

library/src/main/java/link/fls/swipestack/SwipeHelper.java

@@ -19,6 +19,7 @@
 import android.animation.Animator;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewPropertyAnimator;
 import android.view.animation.OvershootInterpolator;
 
 import link.fls.swipestack.util.AnimationUtils;
@@ -138,15 +139,16 @@ private void resetViewPosition() {
     private void swipeViewToLeft(int duration) {
         if (!mListenForTouchEvents) return;
         mListenForTouchEvents = false;
-        mObservedView.animate().cancel();
-        mObservedView.animate()
-                .x(-mSwipeStack.getWidth() + mObservedView.getX())
+        final ViewPropertyAnimator animator = mObservedView.animate();
+        animator.cancel();
+        animator.x(-mSwipeStack.getWidth() + mObservedView.getX())
                 .rotation(-mRotateDegrees)
                 .alpha(0f)
                 .setDuration(duration)
                 .setListener(new AnimationUtils.AnimationEndListener() {
                     @Override
                     public void onAnimationEnd(Animator animation) {
+                        animator.setListener(null);
                         mSwipeStack.onViewSwipedToLeft();
                     }
                 });
@@ -155,15 +157,16 @@ public void onAnimationEnd(Animator animation) {
     private void swipeViewToRight(int duration) {
         if (!mListenForTouchEvents) return;
         mListenForTouchEvents = false;
-        mObservedView.animate().cancel();
-        mObservedView.animate()
-                .x(mSwipeStack.getWidth() + mObservedView.getX())
+        final ViewPropertyAnimator animator = mObservedView.animate();
+        animator.cancel();
+        animator.x(mSwipeStack.getWidth() + mObservedView.getX())
                 .rotation(mRotateDegrees)
                 .alpha(0f)
                 .setDuration(duration)
                 .setListener(new AnimationUtils.AnimationEndListener() {
                     @Override
                     public void onAnimationEnd(Animator animation) {
+                        animator.setListener(null);
                         mSwipeStack.onViewSwipedToRight();
                     }
                 });