A kotlin/anko template for a RequestPermission workflow

RequestPermissions

package `in`.cookytech.testapp

import android.Manifest
import android.Manifest.permission
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import org.jetbrains.anko.*
import org.jetbrains.anko.sdk25.coroutines.onClick


class MainActivity : AppCompatActivity() {

    private val PERMISSIONS_REQUEST_CODE: Int = 11

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        relativeLayout {
            button("call"){
                onClick {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
                        if (checkSelfPermission(permission.CALL_PHONE)!= PackageManager.PERMISSION_GRANTED){
                            if(shouldShowRequestPermissionRationale(Manifest.permission.CALL_PHONE)){
                                ctx.alert {
                                    title = "We need Permissions"
                                    message = "Did you know that we android makes us ask for permissions" +
                                            "for us to call your doctor?"
                                    yesButton {
                                        requestPermissions(
                                                arrayOf(Manifest.permission.CALL_PHONE),
                                                PERMISSIONS_REQUEST_CODE
                                        )
                                    }
                                    noButton {
                                        longToast(":(")
                                    }
                                }.show()
                            }
                            else{
                                requestPermissions(
                                        arrayOf(Manifest.permission.CALL_PHONE),
                                        PERMISSIONS_REQUEST_CODE
                                )
                            }
                        }
                        else{
                            makeTheCall()
                        }
                    }
                    else {
                        makeTheCall()
                    }
                }
            }.lparams {
                centerInParent()
            }
        }
    }

    override fun onRequestPermissionsResult(
            requestCode: Int,
            permissions: Array<out String>,
            grantResults: IntArray
    ) {
        if (requestCode == PERMISSIONS_REQUEST_CODE){
            if(grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED){
                makeTheCall()
            }
        }
    }

    private fun makeTheCall() {
        makeCall("9883988884")
    }

}