allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}
    
dependencies {
        implementation 'com.github.colorgreen:swipe-touch-listener:v1.3'
}

OnSwipeTouchListener listener = new OnSwipeTouchListener();

SwipeAction swipeAction = new SwipeAction();

swipeAction.setSwipeActionListener( new SwipeActionListener() {
    @Override
    public void onDragStart( float val, float totalFriction ) {}

    @Override
    public void onDrag( float val, float friction ) {
        bar.setLayoutParams( new RelativeLayout.LayoutParams( bar.getWidth(), (int) val ) );
        bar.setBackgroundColor( interpolateColor( lightBlue, darkBlue, val / targetHeight ) );
    }

    @Override
    public void onDragEnd( float val, float totalFriction ) {
        // use setBlocked() for blocking another panels from extending
        bottomSwipeAction.setBlocked( swipeAction.isExtended() );
    }
} );

swipeAction.setDirection( SwipeAction.DragDirection.Down );
swipeAction.setSteps( new float[]{ startBarHeight, targetHeight * 0.3f, targetHeight } );
swipeAction.setDragThreshold( 0.4f );

listener.addAction( swipeAction );

listener.attachToView( view );
//... or
view.setOnTouchListener( listener );