Double-Tap on a View in Android

package org.geeksforgeeks.viewdoubletap

import android.os.Bundle
import android.view.View
import android.widget.TextView
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity


class MainActivity : AppCompatActivity() {


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // In our case, we tap on Text View
        val view = findViewById<TextView>(R.id.tvView)

        // Double Click Listener implemented on the Text View
        view.setOnClickListener(object : DoubleClickListener() {
            override fun onDoubleClick(v: View?) {
                Toast.makeText(applicationContext,"Double Click",Toast.LENGTH_SHORT).show()
            }
        })


    }

    // Abstract class defining methods to check Double Click where Time Delay 
    // between the two clicks is set to 300 ms
    abstract class DoubleClickListener : View.OnClickListener {
        var lastClickTime: Long = 0
        override fun onClick(v: View?) {
            val clickTime = System.currentTimeMillis()
            if (clickTime - lastClickTime < DOUBLE_CLICK_TIME_DELTA) {
                onDoubleClick(v)
            }
            lastClickTime = clickTime
        }

        abstract fun onDoubleClick(v: View?)

        companion object {
            private const val DOUBLE_CLICK_TIME_DELTA: Long = 300 //milliseconds
        }
    }
}