Follow the three steps in this Android animation tutorial to learn how to achieve a wrap around the y-axis.

I have spoken to a number of developers who agree with me that lately it's difficult just keeping up with what options are at our disposal. This tutorial shows how easily Android's ObjectAnimator class can achieve what was previously difficult animation: a wrap around the y-axis. If you prefer, you can download and import the entire project directly into Eclipse.
1. Create a new Android project. You need to target Android 3.1 (Honeycomb) or better.
2. In the /res folder, modify the activity_main.xml layout to center a single text view on the screen.
activity_main.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#000000" > <TextView android:id="@+id/text_view" android:layout_centerInParent="true" android:textSize="36sp" android:textStyle="bold" android:textColor="#9600FF00" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> </RelativeLayout>
3. In the /src folder, open the MainActivity.java file. Load the animation in the on create override and apply it to the view.
MainActivity.java package com.authorwjf.rotateonyaxis; import android.os.Bundle; import android.view.View; import android.view.animation.AccelerateDecelerateInterpolator; import android.animation.ObjectAnimator; import android.app.Activity; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); View v = findViewById(R.id.text_view); ObjectAnimator animation = ObjectAnimator.ofFloat(v, "rotationY", 0.0f, 360f); animation.setDuration(3600); animation.setRepeatCount(ObjectAnimator.INFINITE); animation.setInterpolator(new AccelerateDecelerateInterpolator()); animation.start(); } }
Believe it or not, we're done. Check out the demo video for yourself.
The key to knowing what you can do with the ObjectAnimator class is knowing what properties can be animated. It takes a bit of digging to find on the Android Developers site, but here is the list of properties you can play with.
If you enjoy working with Android animations, why not enter our code challenge? The deadline has been extended to Friday, December 6th.