Native transfer plugin - not available after install in ionic2 - ionic2

Question

I have installed native TRANSFER plugin in my ionic 2 app in 2 steps:
1. ionic plugin add cordova-plugin-file-transfer
2. npm install --save #ionic-native/transfer
After that i imported the plugin in my home.ts page.
Import { Transfer } from '#ionic-native/transfer'
I tried to use the plugin to upload a file
var ft = new Transfer();
But i can't use ft var, because Transfer plugin look like it's not avalable.
If i write ft.upload () i receive an error like: Property 'upload' does not exist on type 'Transfer'.
My technologies:
Cordova CLI: 6.4.0
Ionic Framework Version: 2.3.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.1.4
In the previous version of my app when using Ionic Framework Version: 2.0.0-rc.5 /Ionic App Scripts Version: 1.0.0 all worked just fine.
Does anyone has any solution for this?
Thanks in advance.

Answer 1

In the 3.1.0 version of Ionic Native,
you have to use the plugin like a provider.
Import it in app.module.ts and set as provider
import {Transfer} from '#ionic-native/transfer'
#ngModule({
//...
providers:[
Transfer,
..]
Inject in the component/provider where you need to use it.
constructor(private fileTransfer:Transfer){}
Use the fileTransfer object.
Documentation: Ionic Native and Transfer