SliderView.kt

package com.ahmadrosid.image_slider_android

import android.content.Context
import android.support.v4.view.ViewPager
import android.util.AttributeSet
import android.view.animation.DecelerateInterpolator
import android.widget.Scroller

class SliderView @JvmOverloads constructor(
    context: Context, attrs: AttributeSet? = null
) : ViewPager(context, attrs){

    val DEFAULT_SCROLL_DURATION = 200
    val SLIDE_MODE_SCROLL_DURATION = 1000
    
    init {
        setDurationScroll(DEFAULT_SCROLL_DURATION)
        setOnTouchListener { _, _-> true }
    }

    fun setDurationScroll(millis: Int) {
        try {
            val viewpager = ViewPager::class.java
            val scroller = viewpager.getDeclaredField("mScroller")
            scroller.isAccessible = true
            scroller.set(this, OwnScroller(context, millis))
        } catch (e: Exception) {
            e.printStackTrace()
        }

    }

    inner class OwnScroller(context: Context, durationScroll: Int) : Scroller(context, DecelerateInterpolator()) {
        private var durationScrollMillis = 1

        init {
            this.durationScrollMillis = durationScroll
        }

        override fun startScroll(startX: Int, startY: Int, dx: Int, dy: Int, duration: Int) {
            super.startScroll(startX, startY, dx, dy, durationScrollMillis)
        }
    }
}