Chapter 1

Author: merttanm

BasicClass/app/src/main/java/com/merttan/basicclass/MainActivity.kt

@@ -48,6 +48,15 @@ class MainActivity : AppCompatActivity() {
         a = b.also { b = a }
         println(a)
 
+        val homer=Simpson(54,"HomerSimpson","Nuclear")
+        println("${homer.age} ${homer.name} ${homer.job}")
+        //Object & Instance
+        //homer.name="Homer"
+       // homer.job="Nuclear"
+       // homer.age=50
+       // println("Name   : ${homer.name}")
+       // println("Job    : ${homer.job}")
+      //  println("Age    : ${homer.age}")
 
 
 

BasicClass/app/src/main/java/com/merttan/basicclass/Simpson.kt

@@ -0,0 +1,17 @@
+package com.merttan.basicclass
+
+class Simpson {
+
+    //Property
+    var name=""
+    var age=0
+    var job=""
+
+    constructor(ageInput:Int, nameInput:String, jobInput:String){
+        this.age =ageInput
+        this.name=nameInput
+        this.job=jobInput
+    }
+
+
+}

Idioms/.idea/render.experimental.xml

@@ -3,6 +3,7 @@ package com.merttan.idioms
 import android.icu.util.RangeValueIterator
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.view.View
 
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -18,8 +19,6 @@ class MainActivity : AppCompatActivity() {
         println(map["c"])
 
 
-
-
         for( i in 1..100){}
         for( i in 1 until 100){}
         for( x in 2..10 step 2){}
@@ -28,13 +27,16 @@ class MainActivity : AppCompatActivity() {
 
         println(theAnswer())
 
+    }
+
+    fun helloKotlin(view : View){
+        println("Selam Kotlin")
 
 
+    }
 
 
 
-    }
-    
     fun theAnswer()=42
 
 }

Idioms/app/src/main/java/com/merttan/idioms/MainActivity.kt

@@ -2,17 +2,32 @@
 <androidx.constraintlayout.widget.ConstraintLayout 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"
+    android:id="@+id/btn"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/textView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.484"
+        tools:ignore="MissingConstraints"
+        tools:layout_editor_absoluteX="165dp" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:onClick="helloKotlin"
+        android:text="Button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.47"
+        app:layout_constraintStart_toStartOf="parent"
+        tools:ignore="MissingConstraints,OnClick"
+        tools:layout_editor_absoluteY="342dp" />
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>