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 vote267 views1 answer
How to get time duration from file kotlin
Kotlin
2 votes204 views1 answer
Kotlin read all inputstream
Kotlin
0 vote221 views1 answer
Kotlin question mark
Kotlin
4 votes223 views2 answers
Kotlin string to char array
Kotlin
1 vote204 views1 answer
Kotlin convert array to arrayList
Kotlin
0 vote206 views1 answer
Kotlin iterate 1 to 10
Kotlin
0 vote193 views2 answers
Remove autofill edittext android
Kotlin
0 vote194 views1 answer
Pip system path windows environment
Kotlin
5 votes217 views2 answers
Android recyclerview scroll to bottom
Kotlin
1 vote213 views2 answers
Android studio keep device awake
Kotlin