CrossFading Animation in Android Using Android Studio

Introduction

 

This article explains cross fade animation in Android using Android Studio. In this you will first use two Textviews and a Button inside a relative layout in your XML file. On a button click you need to perform the cross_fade animation.

 

To perform cross fade animation you need to create two XML files inside the res folder, fade_in and fade_out.

 

Inside the fade_out folder you will write alpha animation because you need to fade_out one TextView as in the following:

<?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="1.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="0.0" />
</set>

Inside the fade_In folder you will write alpha animation because you need to fade_in one TextView as in the following:

<?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>

In the Java Class file, you will first create the two Animation objects, FadeIn and FadeOut. In these objects, you will load the animations fade_in and fade_out by calling the loadAnimation() method of the AniamtionUtills class.

FadeIn = AnimationUtils.loadAnimation(getApplicationContext()R.anim.fade_in);
FadeOut = AnimationUtils.loadAnimation(getApplicationContext(),R.anim.fade_out);

Step 1

 

Create an XML file and write this:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
        android:background="#ff8769">

    <TextView android:id="@+id/txtView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Fade In Text"
        android:layout_centerInParent="true"
        android:textSize="25dp"
            android:textStyle="italic"/>

    <TextView android:id="@+id/txtView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Fade Out Text"
        android:layout_centerInParent="true"
        android:textSize="25dp"
        android:visibility="gone"
            android:textStyle="italic"/>

    <Button android:id="@+id/btnAnimation"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Start Animation"
        android:layout_marginTop="30dp"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="20dp"/>

</RelativeLayout>

Step 2

 

Fade_in XML file:

<?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>

Step 3

 

Fade_out XML file:

<?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="1.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="0.0" />
 </set>

Step 4

 

Create a Java file and write this:

 

In the Java Class file, you will first create the two Animation objects FadeIn and FadeOut. In these objects, you will load the animations fade_in and fade_out by calling the loadAnimation() method of the AniamtionUtills class. Set the animation on its listener.

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.TextView;

public class CrossfadeActivity extends Activity implements AnimationListener {

       TextView txtview1, txtview2;
       Button btnAnimation;
       Animation FadeIn, FadeOut;
       @Override
       protected void onCreate(Bundle savedInstanceState) {
              // TODO Auto-generated method stub
              super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_crossfade);
              txtview1 = (TextView) findViewById(R.id.txtView1);
              txtview2 = (TextView) findViewById(R.id.txtView2);
              btnAnimation = (Button) findViewById(R.id.btnAnimation);
                     FadeIn = AnimationUtils.loadAnimation(getApplicationContext(),
                           R.anim.fade_in);
              FadeOut = AnimationUtils.loadAnimation(getApplicationContext(),
                           R.anim.fade_out);
              FadeIn.setAnimationListener(this);
              FadeOut.setAnimationListener(this);
              btnAnimation.setOnClickListener(new View.OnClickListener() {

                     @Override
                     public void onClick(View v) {
                            txtview2.setVisibility(View.VISIBLE);
                           txtview2.startAnimation(FadeIn);
                           txtview1.startAnimation(FadeOut);
                     }
              });
       }

       @Override
       public void onAnimationEnd(Animation animation) {
              if (animation == FadeOut) {
                     txtview1.setVisibility(View.GONE);
              }
              if(animation == FadeIn){
                                         txtview2.setVisibility(View.VISIBLE);
              }
       }
       @Override
       public void onAnimationRepeat(Animation animation) {
       }
       @Override
       public void onAnimationStart(Animation animation) {
                           }
}

Step 5

 

When you run your project:

 

 

Image 2

 

 

Image 3

 

 

When you run this project on your emulator or device then you will see the animation.