Kotlin double tab exit button

private var doubleBackToExitPressedOnce = false
override fun onBackPressed() {
        if (doubleBackToExitPressedOnce) {
            super.onBackPressed()
            return
        }

        this.doubleBackToExitPressedOnce = true
        Toast.makeText(this, "Please click BACK again to exit", Toast.LENGTH_SHORT).show()

        Handler().postDelayed(Runnable { doubleBackToExitPressedOnce = false }, 2000)
    }

Source: stackoverflow.com

Similar codes

0 vote348 views1 answer
Android kotlin set timerout
Kotlin
0 vote365 views1 answer
Spring kotlin cron
Kotlin
1 vote358 views1 answer
Check if network is metered android
Kotlin
0 vote309 views1 answer
Seekbar kotlin
Kotlin
11 votes461 views6 answers
Toast in kotlin
Kotlin
2 votes306 views2 answers
How to navigate to last back stack in android studio
Kotlin
4 votes378 views2 answers
How to set layout params in android programmatically kotlin
Kotlin
2 votes344 views3 answers
Could not parse the Android Application Module's Gradle config. Resolve gradle build issues and/or resync
Kotlin
3 votes345 views2 answers
Kotlin power
Kotlin
1 vote351 views1 answer
Kotlin class
Kotlin