feat(android): add stopAnimation() to View

android/titanium/src/java/org/appcelerator/titanium/proxy/TiViewProxy.java

@@ -960,6 +960,16 @@ public void animate(Object arg, @Kroll.argument(optional = true) KrollFunction c
 		}
 	}
 
+	@Kroll.method
+	public void stopAnimation()
+	{
+		TiUIView tiv = peekView();
+
+		if (tiv != null) {
+			tiv.stopAnimation();
+		}
+	}
+
 	public void handlePendingAnimation(boolean forceQueue)
 	{
 		if (pendingAnimation != null && peekView() != null) {

android/titanium/src/java/org/appcelerator/titanium/util/TiAnimationBuilder.java

@@ -133,6 +133,7 @@ public class TiAnimationBuilder
 	protected View view;
 	protected AnimatorHelper animatorHelper;
 	protected TiViewProxy viewProxy;
+	protected AnimatorSet animatorSet;
 
 	public TiAnimationBuilder()
 	{
@@ -628,7 +629,7 @@ private AnimatorSet buildPropertyAnimators(int x, int y, int w, int h, int paren
 		if (delay != null) {
 			as.setStartDelay(delay.longValue());
 		}
-
+		animatorSet = as;
 		return as;
 	}
 
@@ -1416,6 +1417,17 @@ public void start(TiViewProxy viewProxy, View view)
 		}
 	}
 
+	public void stop(View view)
+	{
+		if (animatorSet != null) {
+			animatorSet.removeAllListeners();
+			animatorSet.cancel();
+			animatorSet = null;
+		}
+		view.clearAnimation();
+		setAnimationRunningFor(view, false);
+	}
+
 	private void setAnchor(int width, int height)
 	{
 		setAnchor(width, height, anchorX, anchorY);

android/titanium/src/java/org/appcelerator/titanium/view/TiUIView.java

@@ -163,6 +163,7 @@ public abstract class TiUIView implements KrollProxyListener, OnFocusChangeListe
 	private AtomicBoolean bLayoutPending = new AtomicBoolean();
 	private AtomicBoolean bTransformPending = new AtomicBoolean();
 
+	private TiAnimationBuilder tiBuilder;
 	/**
 	 * Constructs a TiUIView object with the associated proxy.
 	 * @param proxy the associated proxy.
@@ -377,12 +378,12 @@ public void animate()
 			}
 		}
 
-		TiAnimationBuilder builder = proxy.getPendingAnimation();
-		if (builder == null) {
+		tiBuilder = proxy.getPendingAnimation();
+		if (tiBuilder == null) {
 			return;
 		}
 
-		proxy.clearAnimation(builder);
+		proxy.clearAnimation(tiBuilder);
 
 		// If a view is "visible" but not currently seen (such as because it's covered or
 		// its position is currently set to be fully outside its parent's region),
@@ -410,14 +411,22 @@ public void animate()
 		if (Log.isDebugModeEnabled()) {
 			Log.d(TAG, "starting animation", Log.DEBUG_MODE);
 		}
-
-		builder.start(proxy, outerView);
+		tiBuilder.start(proxy, outerView);
 
 		if (invalidateParent) {
 			((View) viewParent).postInvalidate();
 		}
 	}
 
+	public void stopAnimation()
+	{
+		View outerView = getOuterView();
+		if (outerView == null || bTransformPending.get() || tiBuilder == null) {
+			return;
+		}
+		tiBuilder.stop(outerView);
+	}
+
 	public void listenerAdded(String type, int count, KrollProxy proxy)
 	{
 	}

apidoc/Titanium/UI/View.yml

@@ -844,6 +844,13 @@ methods:
         since: "3.0.0"
         notes: Use the <Titanium.Proxy.applyProperties> method to batch-update layout properties.
 
+  - name: stopAnimation
+    summary: Stops a running animation.
+    description: |
+        Stops a running view [Animation](Titanium.UI.Animation).
+    platforms: [android]
+    since: { android: "7.4.0" }
+
   - name: toImage
     summary: Returns an image of the rendered view, as a Blob.
     description: |