How to Add Animation to Android App in JAVA

First, define your animation in XML. For example, let's create a fade-in animation named fade_in.xml in the res/anim directory:

res/anim/fade_in.xml:

FILE CODE

<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fromAlpha="1.0"
    android:toAlpha="0.0"
    android:repeatMode="reverse"

android:repeatCount="infinite" />

Create Image VIew

<ImageView
    android:id="@+id/blinking_image"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"

    android:src="@drawable/animation"
    android:animation="@anim/blink" />

In your activity or fragment, load the animation using AnimationUtils.loadAnimation() and apply it to the desired view:

// Animation Code Block
Animation fadeInAnimation = AnimationUtils.loadAnimation(this, R.anim.blink);
// Find the view to animate
ImageView imageView = findViewById(R.id.blinking_image);
// Apply the animation to the view
imageView.startAnimation(fadeInAnimation);