diff --git a/src/api-impl/android/content/Context.java b/src/api-impl/android/content/Context.java
index 93f04601..e3d0e537 100644
--- a/src/api-impl/android/content/Context.java
+++ b/src/api-impl/android/content/Context.java
@@ -463,7 +463,7 @@ public class Context extends Object {
 	public ComponentName startService(Intent intent) {
 		ComponentName component = intent.getComponent();
 		if (component == null) {
-			Slog.w(TAG, "startService: component is null");
+			Slog.w(TAG, "startService: component is null for intent: " + intent);
 			return null;
 		}
 
diff --git a/src/api-impl/android/view/View.java b/src/api-impl/android/view/View.java
index 5df78a09..7145c27b 100644
--- a/src/api-impl/android/view/View.java
+++ b/src/api-impl/android/view/View.java
@@ -2203,4 +2203,6 @@ public class View implements Drawable.Callback {
 	public void setAccessibilityPaneTitle(CharSequence paneTitle) {}
 
 	public void setAccessibilityHeading(boolean heading) {}
+
+	public WindowInsets computeSystemWindowInsets(WindowInsets insets, Rect contentInsets) { return insets; }
 }
diff --git a/src/api-impl/android/view/animation/AccelerateInterpolator.java b/src/api-impl/android/view/animation/AccelerateInterpolator.java
index 0208aab8..41369f73 100644
--- a/src/api-impl/android/view/animation/AccelerateInterpolator.java
+++ b/src/api-impl/android/view/animation/AccelerateInterpolator.java
@@ -25,7 +25,7 @@ import android.util.AttributeSet;
  * and then accelerates.
  *
  */
-public class AccelerateInterpolator implements Interpolator {
+public class AccelerateInterpolator extends BaseInterpolator {
 	private final float mFactor;
 	private final double mDoubleFactor;
 
diff --git a/src/api-impl/android/view/animation/DecelerateInterpolator.java b/src/api-impl/android/view/animation/DecelerateInterpolator.java
index 43337f44..903346cf 100644
--- a/src/api-impl/android/view/animation/DecelerateInterpolator.java
+++ b/src/api-impl/android/view/animation/DecelerateInterpolator.java
@@ -1,6 +1,6 @@
 package android.view.animation;
 
-public class DecelerateInterpolator implements Interpolator{
+public class DecelerateInterpolator extends BaseInterpolator {
 
 	private float factor = 1.0f;
 
diff --git a/src/api-impl/android/view/animation/LinearInterpolator.java b/src/api-impl/android/view/animation/LinearInterpolator.java
index a8f62927..10ed43d3 100644
--- a/src/api-impl/android/view/animation/LinearInterpolator.java
+++ b/src/api-impl/android/view/animation/LinearInterpolator.java
@@ -1,6 +1,6 @@
 package android.view.animation;
 
-public class LinearInterpolator implements Interpolator {
+public class LinearInterpolator extends BaseInterpolator {
 
 	@Override
 	public float getInterpolation(float input) {