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 vote128 views1 answer
Kotlin filter not null
Kotlin
0 vote146 views1 answer
Viewmodelfactory kotlin
Kotlin
1 vote138 views1 answer
Any in kotlin
Kotlin
5 votes114 views1 answer
Onbackpressed in fragment java
Kotlin
2 votes142 views1 answer
Btn start activity kotlin
Kotlin
0 vote134 views1 answer
Initializing appmetrica library with the extended configuration
Kotlin
2 votes135 views1 answer
Kotlin uuid
Kotlin
0 vote153 views1 answer
Out modifier in kotlin
Kotlin
4 votes122 views2 answers
How to define variable in kotlin
Kotlin
1 vote133 views1 answer
Object kotlin
Kotlin