Add animations to note TextView

app/src/main/java/org/torproject/snowflake/fragments/MainFragment.java

@@ -9,6 +9,8 @@ import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
 import android.widget.ImageView;
 import android.widget.Switch;
 import android.widget.TextView;
@@ -30,6 +32,7 @@ public class MainFragment extends Fragment {
     MainFragmentCallback callback;
     TextView usersServedTV;
     TextView noteTV;
+    Animation textViewFade;
     ImageView snowflakeLogo;
     Switch startButton;
 
@@ -63,6 +66,7 @@ public class MainFragment extends Fragment {
         noteTV = rootView.findViewById(R.id.note_tv);
         startButton = rootView.findViewById(R.id.snowflake_switch);
         snowflakeLogo = rootView.findViewById(R.id.snowflake_logo);
+        textViewFade = AnimationUtils.loadAnimation(getActivity(), R.anim.fade);
 
         //If the service is running, set the button to on
         if (callback.isServiceRunning()) {
@@ -108,6 +112,8 @@ public class MainFragment extends Fragment {
      */
     private void setSnowflakeStatus(boolean status) {
         int from, to;
+        noteTV.startAnimation(textViewFade);
+
         if (status) { //Status on
             from = this.getResources().getColor(R.color.snowflakeOff);
             to = this.getResources().getColor(R.color.snowflakeOn);

app/src/main/res/anim/fade.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <alpha
+        android:duration="300"
+        android:fromAlpha="0.0"
+        android:interpolator="@android:anim/accelerate_interpolator"
+        android:repeatCount="0"
+        android:toAlpha="1.0" />
+</set>
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