Is there a way to prevent multiple instances of an activity from being created with startActivityForResult
?
For example:
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
findViewById<TextView>(R.id.button).setOnClickListener {
startActivityForResult(Intent(this, MainActivity::class.java).apply {
addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
}, 1)
}
}
}
Clicking on the button multiple times opens multiple instances of the MainActivity
even though I've set FLAG_ACTIVITY_SINGLE_TOP
Edit: Looks like there's a difference in behaviour depending on what Android version I'm running on. Android 8 opens a new Activity but Android 13 does not open a new Activity. How do I ensure that all android versions have the Android 13 behaviour?
you can add android:launchMode="singleTop" in the manifest of your activity.
android:name=".ui.activity.MainActivity"
android:exported="false"
android:screenOrientation="portrait"
android:launchMode="singleTop"/>
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