ActivityManager.kt

class Activity {
    val permissionManager: PermissionManager
    
    fun selectImage() {
        if (permissionManager.isStoragePermissionGranted(this)) {
            getImage()
        } else {
            askPermission()
        }
    }

    private fun askPermission() {
        permissionManager.askForPermission(this)
    }

    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        if (permissionManager.isPermissionGranted(grantResults[0])) {
            // Treat request granted
        } else {
            // Treat request denied
        }
    }
}