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

1 vote232 views1 answer
Kotlin operator
Kotlin
0 vote158 views1 answer
Android kotlin timer
Kotlin
2 votes186 views1 answer
Arraylist vs mutablelist kotlin
Kotlin
3 votes169 views2 answers
Create a map from list kotlin
Kotlin
1 vote184 views1 answer
Context kotlin
Kotlin
1 vote233 views1 answer
Kotlin else if
Kotlin
0 vote261 views1 answer
Kotlin http request
Kotlin
3 votes176 views1 answer
Toolbar in fragment android kotlin
Kotlin
11 votes378 views6 answers
Toast in kotlin
Kotlin
0 vote173 views1 answer
Link to image view kotlin
Kotlin