Android Activity Show AlertDialog for Close Confirmation on Back Pressed

class PasswordActivity : AppCompatActivity() {    private var needSave: Boolean = false    override fun onSupportNavigateUp(): Boolean {        onBackPressed()        return true    }    override fun onBackPressed() {        AlertDialog.Builder(this)            .setMessage("Close?")            .setPositiveButton(android.R.string.ok) { dialog, whichButton ->                super.onBackPressed()            }            .setNegativeButton(android.R.string.cancel) { dialog, whichButton ->            }            .show()    }}

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✨ By Desmond Lua

A dream boy who enjoys making apps, travelling and making youtube videos. Follow me on @d_luaz

👶 Apps I built

Travelopy - discover travel places in Malaysia, Singapore, Taiwan, Japan.