btn start activity

// 1. Import necessary packages
import android.content.Intent
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*

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

        // 2. Set click listener for the button
        btn_start.setOnClickListener {
            // 3. Define the intent to start the activity
            val intent = Intent(this, YourActivityName::class.java)

            // 4. Start the activity using the intent
            startActivity(intent)
        }
    }
}

Explanation: 1. Import necessary packages: Import required classes from Android and Kotlin libraries. 2. Set click listener for the button: Assign a click listener to the btn_start button, typically defined in the XML layout file. 3. Define the intent to start the activity: Create an Intent object to specify the transition from the current activity to another (YourActivityName is a placeholder for the name of the activity you want to start). 4. Start the activity using the intent: Use the startActivity() method with the created Intent object to initiate the transition to the specified activity.