Android/kotlin/helloworld

helloworld

MainActivity.kt

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        var logic = SampleLogic()
        var str = logic.execLogic();
        // var str : String = logic.execLogic(); // 型指定もできる
        Log.d("test", "Helloworld=" + str);
    }
}

Samplelogic.kt

class SampleLogic {
    fun execLogic(): String {
        return "Helloworld"
    }
}