activity_main_xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/parent"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#000">

    <View
        android:id="@+id/longpress"
        android:layout_width="128dp"
        android:layout_height="128dp"
        android:background="@drawable/redbg"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <androidx.appcompat.widget.LinearLayoutCompat
        android:id="@+id/lockparent"
        android:layout_width="wrap_content"
        android:scaleY="0"
        android:scaleX="0"
        android:paddingBottom="148dp"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="@id/longpress"
        app:layout_constraintEnd_toEndOf="@id/longpress"
        app:layout_constraintStart_toStartOf="@id/longpress">

        <androidx.cardview.widget.CardView
            android:id="@+id/card"
            android:layout_width="32dp"
            android:layout_height="64dp"
            android:background="@drawable/bg"
            app:cardCornerRadius="16dp">

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/oval"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <ImageView
                    android:id="@+id/arrow"
                    app:layout_constraintTop_toTopOf="parent"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:src="@android:drawable/arrow_up_float" />

                <ImageView
                    android:id="@+id/lock"
                    android:layout_width="24dp"
                    android:layout_height="24dp"
                    android:layout_marginTop="16dp"
                    android:src="@android:drawable/ic_lock_lock"
                    app:tint="@color/black"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />


            </androidx.constraintlayout.widget.ConstraintLayout>
        </androidx.cardview.widget.CardView>
    </androidx.appcompat.widget.LinearLayoutCompat>

    <View
        android:id="@+id/longpressHelper"
        android:layout_width="128dp"
        android:layout_height="128dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

FloatPoint.kt

import android.graphics.Point
import android.os.Parcel
import android.os.Parcelable
import android.util.Size
import java.io.PrintWriter

/**
 * Point holds two integer coordinates
 */
class FloatPoint : Parcelable {
    var x = 0f
    var y = 0f

    constructor() {}
    constructor(x: Float, y: Float) {
        this.x = x
        this.y = y
    }

    constructor(src: FloatPoint) {
        x = src.x
        y = src.y
    }

    constructor(src: Point) {
        x = src.x.toFloat()
        y = src.y.toFloat()
    }

    /**
     * Set the point's x and y coordinates
     */
    operator fun set(x: Float, y: Float) {
        this.x = x
        this.y = y
    }

    /**
     * Negate the point's coordinates
     */
    fun negate() {
        x = -x
        y = -y
    }

    /**
     * Offset the point's coordinates by dx, dy
     */
    fun offset(dx: Float, dy: Float) {
        x += dx
        y += dy
    }

    /**
     * Returns true if the point's coordinates equal (x,y)
     */
    fun equals(x: Float, y: Float): Boolean {
        return this.x == x && this.y == y
    }

    override fun hashCode(): Int {
        var result = x
        result = 31 * result + y
        return result.toInt()
    }

    override fun toString(): String {
        return "FloatPoint($x, $y)"
    }

    /** @hide
     */
    fun printShortString(pw: PrintWriter) {
        pw.print("[")
        pw.print(x)
        pw.print(",")
        pw.print(y)
        pw.print("]")
    }

    /**
     * Parcelable interface methods
     */
    override fun describeContents(): Int {
        return 0
    }

    /**
     * Write this point to the specified parcel. To restore a point from
     * a parcel, use readFromParcel()
     * @param out The parcel to write the point's coordinates into
     */
    override fun writeToParcel(out: Parcel?, flags: Int) {
        out?.writeFloat(x)
        out?.writeFloat(y)
    }

    /**
     * Set the point's coordinates from the data stored in the specified
     * parcel. To write a point to a parcel, call writeToParcel().
     *
     * @param in The parcel to read the point's coordinates from
     */
    fun readFromParcel(`in`: Parcel) {
        x = `in`.readFloat()
        y = `in`.readFloat()
    }

    companion object CREATOR : Parcelable.Creator<FloatPoint> {
        /**
         * Return a new point from the data in the specified parcel.
         */
        override fun createFromParcel(`in`: Parcel): FloatPoint {
            val r = FloatPoint()
            r.readFromParcel(`in`)
            return r
        }

        /**
         * Return an array of rectangles of the specified size.
         */
        override fun newArray(size: Int): Array<FloatPoint?> {
            return arrayOfNulls(size)
        }

        /** {@hide}  */
        fun convert(size: Size): Point {
            return Point(size.width, size.height)
        }

        /** {@hide}  */
        fun convert(point: FloatPoint): Size {
            return Size(point.x.toInt(), point.y.toInt())
        }
    }
}

MainActivity.kt

import android.animation.ValueAnimator
import android.content.res.ColorStateList
import android.graphics.Color
import android.os.Bundle
import android.util.Log
import android.util.TypedValue
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import androidx.appcompat.app.AppCompatActivity
import androidx.cardview.widget.CardView
import androidx.constraintlayout.widget.ConstraintLayout
import kotlin.math.abs


@SuppressWarnings("all")
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val dp = resources.displayMetrics.density

        var draggableItem: DraggableItem? = null
        val MAX_MOVE = 400f
        val MAX_RAD = 64f

        val view = findViewById<View>(R.id.longpress)
        val parent = findViewById<ViewGroup>(R.id.parent)

        view.setOnTouchListener { v: View, motionEvent: MotionEvent ->

            if (motionEvent.action == MotionEvent.ACTION_UP || motionEvent.action == MotionEvent.ACTION_POINTER_UP) {
                draggableItem?.apply {
                    val dx = startingPoint.x - motionEvent.x
                    val dy = startingPoint.y - motionEvent.y
                    val dragPercentX = abs(dx)
                    val dragPercentY = abs(dy)

                    _view.animate().scaleY(0f).scaleX(0f).translationY(startingPoint.y - 200).start()
                    ValueAnimator.ofFloat(64f * dp, 32f * dp).run {
                        addUpdateListener { v ->
                            card.run {
                                val layoutParams00 = layoutParams
                                if (dy < -200 && dragPercentY < 100) {
                                    layoutParams00.width = (animatedValue as Float * dp).toInt()
                                }
                                layoutParams = layoutParams00
                            }
                            /*if (dy < -200 && dragPercentY < 100) {
                                radius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dPercentY, context.resources.displayMetrics)
                            }*/
                        }
                        start()
                    }
                    draggableItem = null
                }
            }

            if (motionEvent.action == MotionEvent.ACTION_DOWN || motionEvent.action == MotionEvent.ACTION_POINTER_DOWN) {
                val lockparent = [email protected]<ViewGroup>(R.id.lockparent)
                (0..parent.childCount).forEach {
                    parent.getChildAt(it).run {
                        if (this is View && this.id == R.id.longpress) {
                            draggableItem = DraggableItem(
                                    lockparent,
                                    FloatPoint(motionEvent.x, motionEvent.y),
                                    card = lockparent.findViewById(R.id.card),
                                    arrow = lockparent.findViewById(R.id.arrow),
                                    lock = lockparent.findViewById(R.id.lock),
                            )
                            onFoundItem(draggableItem)
                        }
                    }
                }
            }

            if (motionEvent.action == MotionEvent.ACTION_MOVE) {
                draggableItem?.run {
                    val dy = motionEvent.y - startingPoint.y
                    val dragPercentY = findPercentage(abs(dy), MAX_MOVE)
                    val dPercentY = findPercentage(abs(dy), MAX_RAD)
                    Log.d("TAG", "dragPercentY: $dragPercentY")
                    Log.d("TAG", "dy: $dy")
                    _view.run {
                        if (dy < -200 && dragPercentY < 100) translationY = dy + 200
                    }

                    card.run {
                        val layoutParams00 = layoutParams
                        if (dy < -200 && dragPercentY < 100) {
                            layoutParams00.width = ((64f * dp) * (dragPercentY / 100)).toInt()
                        }
                        layoutParams = layoutParams00

                        if (dy < -200 && dragPercentY < 100) {
                            radius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dPercentY, context.resources.displayMetrics)
                        }
                    }

                    arrow.run {
                        var lastPercent = 0f
                        if (dy < -200) {
                            lastPercent = dragPercentY
                        }
                        Log.d("TAG", "lastPercent: $lastPercent")
                        if (dy < -200 && dragPercentY < 100) {
                            alpha = 1f - (dragPercentY / 100)
                        }
                    }

                    lock.run {
                        val layoutParams00 = layoutParams as ConstraintLayout.LayoutParams
                        if (dy < -200 && dragPercentY < 100) {
                            layoutParams00.topMargin = ((16f * dp) * (1 - (dragPercentY / 100))).toInt()
                            if(dragPercentY> 80){
                                setImageDrawable(getDrawable(android.R.drawable.ic_delete))
                                imageTintList = ColorStateList.valueOf(Color.RED)
                            } else {
                                setImageDrawable(getDrawable(android.R.drawable.ic_lock_lock))
                                imageTintList = ColorStateList.valueOf(Color.BLACK)
                            }
                        }
                        layoutParams = layoutParams00


                    }
                }
            }

            return@setOnTouchListener true
        }
    }

    private fun onFoundItem(draggableItem: DraggableItem?) {
        draggableItem?.run { _view.animate().scaleY(1f).scaleX(1f).start() }
    }

}

data class DraggableItem(
        val _view: View,
        val startingPoint: FloatPoint,
        val card: CardView,
        val arrow: ImageView,
        val lock: ImageView
)

fun findPercentage(n: Float, v: Float) = (n * 100.0f) / v