Move SpeechActivity animation to XML.

tensorflow/examples/android/res/animator/color_animation.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+ Copyright 2017 The TensorFlow Authors. All Rights Reserved.
+
+ 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
+ distributed under the License is distributed on an "AS IS" BASIS,
+ 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.
+-->
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+  android:ordering="sequentially">
+  <objectAnimator
+    android:propertyName="backgroundColor"
+    android:duration="375"
+    android:valueFrom="0x00b3ccff"
+    android:valueTo="0xffb3ccff"
+    android:valueType="colorType"/>
+  <objectAnimator
+    android:propertyName="backgroundColor"
+    android:duration="375"
+    android:valueFrom="0xffb3ccff"
+    android:valueTo="0x00b3ccff"
+    android:valueType="colorType"/>
+</set>

tensorflow/examples/android/src/org/tensorflow/demo/SpeechActivity.java

@@ -31,7 +31,8 @@ the RecognizeCommands helper class.
 
 package org.tensorflow.demo;
 
-import android.animation.ValueAnimator;
+import android.animation.AnimatorInflater;
+import android.animation.AnimatorSet;
 import android.app.Activity;
 import android.content.pm.PackageManager;
 import android.media.AudioFormat;
@@ -329,17 +330,11 @@ public class SpeechActivity extends Activity {
                     labelIndex = i;
                   }
                 }
-                final View labelView = (View) labelsListView.getChildAt(labelIndex - 2);
+                final View labelView = labelsListView.getChildAt(labelIndex - 2);
-                ValueAnimator colorAnimation =
+
-                     ValueAnimator.ofArgb(0x00b3ccff, 0xffb3ccff, 0x00b3ccff);
+                AnimatorSet colorAnimation = (AnimatorSet) AnimatorInflater.loadAnimator(
-                colorAnimation.setDuration(750);
+                    SpeechActivity.this, R.animator.color_animation);
-                colorAnimation.addUpdateListener(
+                colorAnimation.setTarget(labelView);
-                    new ValueAnimator.AnimatorUpdateListener() {
-                      @Override
-                      public void onAnimationUpdate(ValueAnimator animator) {
-                        labelView.setBackgroundColor((int) animator.getAnimatedValue());
-                      }
-                    });
                 colorAnimation.start();
               }
             }