This tutorial will guide you to do animation in android. There are two ways to do animations in android , through XML code or java code. In this tutorial, we are using only first way through XML code. In this tutorial, we are defining animations like following .

1. fade in
2. fade out
3. scale
4. rotate
5. slide up
6. slide down

Following are some steps to animation in android apps.

Step1- First, create animation xml file

We will create this animation file in res/anim/blink.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha android:fromAlpha="0.0"
      android:toAlpha="1.0"
      android:interpolator="@android:anim/accelerate_interpolator"
      android:duration="800"
      android:repeatMode="reverse"
      android:repeatCount="infinite"/>
</set>

Step-2 Create a Activity and add following code

public class MainActivity extends Activity{
TextView textMessage;
// Animation
Animation animBlink;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_blink);
    textMessage = (TextView) findViewById(R.id.textMessage);
    textMessag.setText(Welcome to Android Code Portal);
    // load the animation
    animBlink = AnimationUtils.loadAnimation(getApplicationContext(),
    R.anim.blink);
   // start the animation
    textMessage.startAnimation(animBlink);}
}

[Click and drag to move] 

Here are some more important animations type:-

1) Animation ZoomIn

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
   android:fillAfter="true" >
    <scale
       xmlns:android="http://schemas.android.com/apk/res/android"
       android:duration="1000"
       android:fromXScale="1"
       android:fromYScale="1"
       android:pivotX="50%"
       android:pivotY="50%"
       android:toXScale="3"
       android:toYScale="3" >
    </scale>
</set>

2) Animation ZoomOut

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
   android:fillAfter="true" >
    <scale
       xmlns:android="http://schemas.android.com/apk/res/android"
       android:duration="1000"
       android:fromXScale="1.0"
       android:fromYScale="1.0"
       android:pivotX="50%"
       android:pivotY="50%"
       android:toXScale="0.5"
       android:toYScale="0.5" >
    </scale>
</set>

3) Animation FadeIn

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
   android:fillAfter="true" >
    <alpha
       android:duration="1000"
       android:fromAlpha="0.0"
       android:interpolator="@android:anim/accelerate_interpolator"
       android:toAlpha="1.0" />
</set>

4) Animation FadeOut

<set xmlns:android="http://schemas.android.com/apk/res/android"
   android:fillAfter="true" >
    <alpha
       android:duration="1000"
       android:fromAlpha="1.0"
       android:interpolator="@android:anim/accelerate_interpolator"
       android:toAlpha="0.0" />
</set>

5) Animation Rotate

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <rotate android:fromDegrees="0"
       android:toDegrees="360"
       android:pivotX="50%"
       android:pivotY="50%"
       android:duration="700"
       android:repeatMode="restart"
       android:repeatCount="infinite"
       android:interpolator="@android:anim/cycle_interpolator"/>
</set>

6) Animation Move

<?xml version="1.0" encoding="utf-8"?>
<set
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:interpolator="@android:anim/linear_interpolator"
   android:fillAfter="true">
   <translate
       android:fromXDelta="0%p"
       android:toXDelta="80%p"
       android:duration="1000" />
</set>

7) Animation SlideDown

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
   android:fillAfter="true">
    <scale
       android:duration="800"
       android:fromXScale="1.0"
       android:fromYScale="0.0"
       android:interpolator="@android:anim/linear_interpolator"
       android:toXScale="1.0"
       android:toYScale="1.0" />
</set>