Start activity helper

Activity.kt

import android.app.Activity
import android.content.Intent

fun <T : Activity> Activity.startActivity(
    activityClass: KClass<T>, 
    intentBlock: (Intent.() -> Unit)? = null
) {
    val intent = Intent(this, activityClass.java)
    intentBlock?.invoke(intent)
    startActivity(intent)
}

ActivityExample.kt

fun launchMainActivity() {
    startActivity(MainActivity::class) {
           
    }
}