AndroidKotlin_ClassTask_2020_06_24

package com.hackeru.mykotlinapp

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.view.View.OnClickListener
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity(), OnClickListener {
    var userName = "daniel"
    var userPass = "1122"
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setPointer()
    }

    private fun setPointer() {
        /*
        mainBtnTxt.setOnClickListener{
            mainTxtWelcome.text = "Hello ${mainTxtName.text}"
        }*/
        mainBtnLogin.setOnClickListener(this)
        //java
        //findViewById(R.id.mainBtnReg).setOnClickListener(this)
    }

    override fun onClick(v: View) {
        when (v.id) {   //switch (v.id)
            R.id.mainTxtName -> {
                mainTxtError.visibility = View.INVISIBLE
            }
            R.id.mainTxtPass -> {
                mainTxtError.visibility = View.INVISIBLE
            }
            R.id.mainBtnLogin -> {
                //start new activity
                if (mainTxtName.text.equals(userName) && mainTxtPass.text.equals(userPass)) {
                    val intent = Intent(applicationContext, Login::class.java)
                    startActivity(intent)
                } else {
                    mainTxtError.visibility = View.VISIBLE
                    var t = Toast.makeText(this@MainActivity, "Wrong~!", Toast.LENGTH_LONG)
                    t. show()
                }
            }
            else -> {
                //any other thing that we forget, for preventing the application to crash :)
            }
        }
    }
}