Programming Android With Kotlin O 39-reilly Pdf <Popular – CHEAT SHEET>

val api = retrofit.create(Api::class.java) return api.fetchData() } }

class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) programming android with kotlin o 39-reilly pdf

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> val api = retrofit

<Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Click me!" /> $name!") } }

val name: String = "John" var age: Int = 30

class Person(val name: String, var age: Int) { fun greet() { println("Hello, $name!") } }