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 vote168 views1 answer
Kotlin flatmap
Kotlin
4 votes138 views2 answers
Try catch kotlin
Kotlin
1 vote150 views1 answer
Context kotlin
Kotlin
0 vote137 views1 answer
Change time to readable time in kotlin
Kotlin
0 vote147 views1 answer
Kotlin reduce
Kotlin
3 votes143 views1 answer
Make map kotlin
Kotlin
0 vote155 views1 answer
Set text size programmatically android kotlin
Kotlin
0 vote193 views1 answer
Kotlin http request
Kotlin
0 vote153 views2 answers
Time text format kotlin android studio
Kotlin
3 votes133 views1 answer
Fragment back pressed kotlin
Kotlin