afrishberg

data class Data(
        val id: Int,
        var rotated: Boolean = false
)

afrishberg

override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val dataItem = data[position]
        holder.textView.text = dataItem.id.toString()
        holder.textView.animate().rotation(
            if (dataItem.rotated) 180.0f else 0.0f
        ).setDuration(400).start()
    }

afrishberg

private fun flipRotation(adapter: Adapter) {
        val newList = adapter.data.mapIndexed { i, data ->
            if (i == 0) data.copy(rotated = data.rotated.not()) else data
        }
    }

afrishberg

package com.example.ui.views

import android.content.Context
import android.util.AttributeSet
import android.view.GestureDetector
import android.view.MotionEvent
import android.widget.FrameLayout


typealias TapListener = () -> Unit