Notes

menülü main aktivity sayfası

package com.example.veyse.vize2

import android.os.Bundle
import android.support.design.widget.Snackbar
import android.support.v7.app.AppCompatActivity
import android.view.Menu
import android.view.MenuItem

import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.android.synthetic.main.content_main.*

class MainActivity : AppCompatActivity() {
var sayi1=0
var sayi2=0
var sonuc=0

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

fab.setOnClickListener { view ->
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show()
}
}

override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.menu_main, menu)
return true
}

override fun onOptionsItemSelected(item: MenuItem): Boolean {
sayi1=etSayi1.text.toString().toInt()
sayi2=etSayi2.text.toString().toInt()

return when (item.itemId) {
R.id.toplama -> {
sonuc= sayi1 + sayi2
txtSonuc.text=sonuc.toString()
true
}
R.id.cikarma -> {
sonuc= sayi1 - sayi2
txtSonuc.text=sonuc.toString()
true
}
R.id.carpma -> {
sonuc= sayi1 * sayi2
txtSonuc.text=sonuc.toString()
true
}
R.id.bolme -> {
sonuc= sayi1 / sayi2
txtSonuc.text=sonuc.toString()
true
}
R.id.cikis -> {

txtSonuc.text="program bitti"
System.exit(0)
true
}
else -> super.onOptionsItemSelected(item)
}
}
}


menülü menü sayfası


<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.veyse.vize2.MainActivity">
<item
android:id="@+id/toplama"
android:orderInCategory="100"
android:title="Topla"
app:showAsAction="ifRoom" />
<item
android:id="@+id/cikarma"
android:orderInCategory="100"
android:title="Çıkar"
app:showAsAction="ifRoom" />
<item
android:id="@+id/carpma"
android:orderInCategory="100"
android:title="Çarpma"
app:showAsAction="ifRoom" />
<item
android:id="@+id/bolme"
android:orderInCategory="100"
android:title="Böl"
app:showAsAction="ifRoom" />
<item
android:id="@+id/cikis"
android:orderInCategory="100"
android:title="Çıkış"
app:showAsAction="ifRoom" />
</menu>


random sayı üretme

package com.example.veyse.vize1

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_main.*
import java.util.*

class MainActivity : AppCompatActivity() {
var randomInt=0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
btnRandom.setOnClickListener {
var rnd=Random()

randomInt=rnd.nextInt(100)
textView.text = randomInt.toString()
}

}
}

vize final hesaplama diğer sayfaya değer geçirip arka zemin rengini değiştiren program


ilk main
package com.example.veyse.vize3

import android.content.Intent
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

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

btnHesapla.setOnClickListener{
var bn=0

bn=(txtVize.text.toString().toInt()+txtFinal.text.toString().toInt())/2

val Intent=Intent(this,Main2Activity::class.java)
Intent.putExtra("BasariNotu",bn)
startActivity(Intent)
}
}
}

main 2
package com.example.veyse.vize3

import android.graphics.Color
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_main2.*

class Main2Activity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main2)

val gelenBN=intent.getIntExtra("BasariNotu",0)

if (gelenBN<=50) {
ekran.setBackgroundColor(Color.RED)
Toast.makeText(this,"$gelenBN",Toast.LENGTH_SHORT).show()
}
else if (gelenBN>=50)
{
ekran.setBackgroundColor(Color.GREEN)
Toast.makeText(this,"$gelenBN",Toast.LENGTH_SHORT).show()
}

}
}