yuriyskulskiy

    private float MIN_FLING_START_VELOCITY_DP = 500;

    private float mCurrentMinFlingVelocityPx;
    private VelocityTracker mVelocityTracker;
    private boolean isTouching = false;
    private FlingAnimation mFling = new FlingAnimation(this,
            new FloatPropertyCompat<AnimatedLayout>("offset") {

                @Override
                public float getValue(AnimatedLayout object) {

yuriyskulskiy

    private void updateOffset(float newOffsetValue) {
        ...
        updateIconView();
    }

    private void updateIconView() {
        float oldTranslatePosition = mWeatherIcon.getTranslationX();
        float newTranslatePosition;
        float newAlpha;

yuriyskulskiy

public class AnimatedLayout extends ConstraintLayout {
    ...
    @Override
    protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
        if (canvas instanceof ScreenShotCanvas) {
            if (isChildExcluded(child)) {
                // do not draw this child to the screenshot canvas
                return false;
            }
            return super.drawChild(canvas, child, drawingTime);

yuriyskulskiy

public class AnimatedLayout extends ConstraintLayout {

    ...
    private CircleImageView mWeatherIcon;
    ...
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        ...
        mWeatherIcon = findViewById(R.id.weatherIconIV);

yuriyskulskiy

<?xml version="1.0" encoding="utf-8"?>

<com.example.animated.article.custom.AnimatedLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/transformItem"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"

yuriyskulskiy

public boolean draw(Canvas canvas) {
        
        canvas.clipRect(mBounds.left,
                mBounds.top,
                mBounds.right,
                mBounds.bottom + mBounds.bottom * BlUR_RADIUS_FACTOR); 
        ...
//        mPaint.setAlpha((int) (0xff * mGlowAlpha)); alpha is not going to be changed during animation
        ...
    }

yuriyskulskiy

 public void setSize(int width, int height) {
        ...
        mPaint.setMaskFilter(new BlurMaskFilter(mBounds.bottom * BlUR_RADIUS_FACTOR,
                BlurMaskFilter.Blur.NORMAL));
    }

yuriyskulskiy

public class GlowingEdgeEffectFactory extends RecyclerView.EdgeEffectFactory {

    @NonNull
    @Override
    protected EdgeEffect createEdgeEffect(@NonNull RecyclerView view, int direction) {
        return new GlowingEdgeEffect(view.getContext());
    }
}

yuriyskulskiy

public class DistortEdgeEffect {
    ...
    private static final float RADIUS_FACTOR = 1f; //not nessesary but I have changed it from 0.6 to 1
    private final int HORIZONTAL_STEPS_COUNT = 40; // as more steps as more smoother it looks 

    private float[] mDistrotedVertices;
    private float mStepWidth; 
    ...
    public void setSize(int width, int height) {
        ...

yuriyskulskiy

public class DistortEdgeEffect {
    ...
    private int mFulHeight;
    private int mFullWidth;
    private float maxDistortionHeight;

    ...
    public void setSize(int width, int height) {
        ...