Upr4

package com.example.upr4

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.EditText
import android.widget.Toast
import java.lang.String.format
import java.time.LocalDate
import java.time.format.DateTimeFormatter
import java.time.temporal.ChronoUnit

private lateinit var bd: ActivityMainBinding

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
//        setContentView(R.layout.activity_main)
        bd=DataBindingUtil.setContentView(this, R.layout.activity_main);
        bd.lbl.setText("Test");
        bd.calendarView.isVisible=false;

        bd.editTextDate.setOnFocusChangeListener{v, hasFocus->
            bd.calendarView.isVisible=true;
        }
        bd.editTextDate2.setOnFocusChangeListener{View,year,month, dayOfMonth->
            val izbr= LocalDate.of(year,month+1,dayOfMonth)
            val frmt=DateTimeFormatter=DateTimeFormatter.ofPattern("dd.MM.yyyy");
            val datestr: String=frmt=format(izbr);

            val curr=this.currentFocus;
            (curr as EditText).setText(datestr);
            bd.CalendarView.isVisible=false;
        }
        bd.button.setOnClickListener{
            if(!bd.editTextDate.text.isEmpty()&&!bd.editTextDate2.text.isEmpty()){
                val frmt: DateTimeFormatter=DateTimeFormatter.ofPattern("dd.MM.yyyy");
                val d1=LocalDate.parse(bd.editTextDate.text.toString(),frmt);
                val d2=LocalDate.parse(bd.editTextDate.text.toString(),frmt);
                val razlika=d1.until(d2, ChronoUnit.DAYS);
                bd.lbl.text=razlika.toString()+" dni:";
            } else Toast.makeText(this, "Date?", Toast.LENGTH_SHORT).show();
            if(!bd.editTextDate.text.isEmpty()){
                val dni=bd.editTextNumber.text.toString().toInt();
                val dnes=LocalDate.now();
                val kamData=dnes.plusDays(dni);
                bd.lbl.text=bd.lbl.text.toString()+" date:"+frmt.format(kamData);
            }
        }
    }
}