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HTTP 1.1 GET <- request line

content-type: application/json;
Content-Type: multipart/mixed; boundary=gc0p4Jq0M2Yt08jU534c0p
:

(1行あける)
{"foo": "bar"}

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@Override
int[] calculateDistanceToFinalSnap(@NonNull RecyclerView.LayoutManager layoutManager, @NonNull View targetView) {
    int[] out = new int[2];
    if (layoutManager.canScrollHorizontally()) {
        out[0] = getDistance(layoutManager, targetView, OrientationHelper.createHorizontalHelper(layoutManager));
    } else {
        out[0] = 0;
    }

    if (layoutManager.canScrollVertically()) {

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@Override
View findSnapView(RecyclerView.LayoutManager layoutManager) {
    OrientationHelper helper = layoutManager.canScrollHorizontally()
            ? OrientationHelper.createHorizontalHelper(layoutManager)
            : OrientationHelper.createVerticalHelper(layoutManager);
    int childCount = layoutManager.getChildCount();
    View closestChild = null;
    int containerStart = helper.getStartAfterPadding();
    int absClosest = Integer.MAX_VALUE;
    for (int i = 0; i < childCount; i++) {

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@Override
int findTargetSnapPosition(RecyclerView.LayoutManager layoutManager, int velocityX, int velocityY) {
    boolean forwardDirection = layoutManager.canScrollHorizontally() ? velocityX > 0 : velocityY > 0;
    return forwardDirection ? previousClosestPosition + 1 : previousClosestPosition - 1;
}

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    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        new YourCustomSnapHelper().attachToRecyclerView(MultiSnapRecyclerView.this);
    }

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public class CanvasView extends View {

    private Paint paint = new Paint();

    public CanvasView(Context context) {
        super(context);
    }

    public CanvasView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);

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public class CanvasView extends View {

    private Paint backgroundPaint = new Paint();
    private Paint paint = new Paint();

    public CanvasView(Context context) {
        super(context);
    }

    public CanvasView(Context context, @Nullable AttributeSet attrs) {

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class SpringRotationView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : View(context, attrs, defStyleAttr) {

    private companion object Params {
        val INITIAL_ROTATION = 0f
        val STIFFNESS = SpringForce.STIFFNESS_MEDIUM
        val DAMPING_RATIO = SpringForce.DAMPING_RATIO_HIGH_BOUNCY
    }

    private val rotationAnim: SpringAnimation = SpringAnimation(this, SpringAnimation.ROTATION).apply {
        spring = SpringForce(INITIAL_ROTATION).apply {

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class SpringScaleView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : View(context, attrs, defStyleAttr) {

    private companion object Params {
        val INITIAL_SCALE = 1f
        val STIFFNESS = SpringForce.STIFFNESS_MEDIUM
        val DAMPING_RATIO = SpringForce.DAMPING_RATIO_HIGH_BOUNCY
    }

    private val xAnim: SpringAnimation = SpringAnimation(this, SpringAnimation.SCALE_X).apply {
        spring = SpringForce(INITIAL_SCALE).apply {

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class SpringPositionView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : View(context, attrs, defStyleAttr) {

    private companion object Params {
        private const val STIFFNESS = SpringForce.STIFFNESS_MEDIUM
        private const val DAMPING_RATIO = SpringForce.DAMPING_RATIO_HIGH_BOUNCY
    }

    private lateinit var xAnim: SpringAnimation
    private lateinit var yAnim: SpringAnimation