Pulse.xml

<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:repeatCount="1"
    android:repeatMode="reverse"
    android:toXScale="0.5"
    android:toYScale="0.5" />
    
    ImageView imageView = (ImageView) findViewById(R.id.image);
Animation pulse = AnimationUtils.loadAnimation(this, R.anim.pulse);
imageView.startAnimation(pulse);