Add RenderNodeAnimator support check

app/src/main/java/com/hippo/util/AnimationUtils.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.util;
+
+import android.annotation.TargetApi;
+import android.graphics.Canvas;
+import android.os.Build;
+import android.support.v4.view.animation.FastOutLinearInInterpolator;
+import android.support.v4.view.animation.FastOutSlowInInterpolator;
+import android.support.v4.view.animation.LinearOutSlowInInterpolator;
+import android.view.View;
+import android.view.animation.Interpolator;
+
+public final class AnimationUtils {
+
+    public static final Interpolator FAST_SLOW_INTERPOLATOR = new LinearOutSlowInInterpolator();
+    public static final Interpolator SLOW_FAST_INTERPOLATOR = new FastOutLinearInInterpolator();
+    public static final Interpolator SLOW_FAST_SLOW_INTERPOLATOR = new FastOutSlowInInterpolator();
+
+    @TargetApi(Build.VERSION_CODES.KITKAT)
+    public static boolean isSupportRenderNodeAnimator(View... views) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+            return false;
+        }
+        for (View v : views) {
+            if (!v.isAttachedToWindow()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public static boolean isSupportRenderNodeAnimator(Canvas canvas) {
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP &&
+                canvas.isHardwareAccelerated();
+    }
+}