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) {
        ...

yuriyskulskiy

...
    private Bitmap mBitmap;
    ...
    private void initScrollView() {
        ...
        Resources res = getResources();
        mBitmap = BitmapFactory.decodeResource(res, R.drawable.hand_rope);
        mBitmap = Bitmap.createScaledBitmap(mBitmap, mBitmap.getWidth() / 2,
                                            mBitmap.getHeight() / 2, false);
    }

yuriyskulskiy

...
    <com.example.replica.NestedScrollView
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:background="@color/overscroll_background">

        <androidx.cardview.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:elevation="8dp"

yuriyskulskiy

private boolean useEdgeEffect = false;
...

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
      
                    ...
//                  if (canOverscroll) {
                    if (useEdgeEffect) {
                        deltaY -= mScrollConsumed[1];