How to create a button in Kotlin that opens a new activity (Android Studio)?
Hello I'm making an app using Android Studio and the Kotlin language and am having trouble getting my button to open a new activity. I have the button created in my xml file but I can't find the KOTLIN syntax of how to declare it in MainActivity.kt and how to create the OnClicklistener that would take me to the new activity. I have the new activity defined in the manifest as well I think I just need syntax help on how to actually switch from MainActivity.kt to secondActivity.kt. Any help is appreciated.
You can add onclick
event listener like below.
button1.setOnClickListener(object: View.OnClickListener {
override fun onClick(view: View): Unit {
// Handler code here.
val intent = Intent(context, DestActivity::class.java);
startActivity(intent);
}
})
Or you can use simplified form
button1.setOnClickListener {
// Handler code here.
val intent = Intent(context, DestActivity::class.java)
startActivity(intent);
}
Button in layout xml file
<Button
android:id="@+id/btn_start_new_activity"
android:text="New Activity"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
For declaring it in the Kotlin Activity file
var btn_new_activity = findViewById(R.id.btn_start_new_activity) as Button
Set Onclicklistener to the button, to start new activity when button is clicked
btn_new_activity.setOnClickListener {
val intent = Intent(context, NewActivity::class.java)
startActivity(intent);
}
Reference: Android Studio Tutorial - https://www.youtube.com/watch?v=7AcIGyugR7M
I recommend you use the Anko - extension for Kotlin https://github.com/Kotlin/anko. It let you use intent(and more other things) the shortest way. In your case it`ll be:
button {
onClick { startActivity<SecondActivity>() }
}
// In your method `fun onCreate(savedInstanceState: Bundle?)` add this.
your_btn_id.setOnClickListener{
val intent = Intent(this, yourpagename::class.java)
startActivity(intent)
}
// till now if it doesn't work then, check if these two files are added or not,
import android.content.Intent
import kotlinx.android.synthetic.main.activity_otp.*
// Hope that it would work. 😊