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Using Storage with Android

February 14, 2019, 8:56 am
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@ewehrmann wrote:

Trying to use the Storage module to make an Http request, save the data set to a named key and then retrieve and display the data.

With my current code base this is working from the browser (ionic serve) but not from the emulator (ionic cordova emulate android).

I have tried adding and removing SQL Lite. It doesn’t work either way. Here is the output I get:

With SQL Lite installed:
[app-scripts] [08:48:18] console.log: OPEN database: _ionicstorage
[app-scripts] [08:48:18] console.log: new transaction is queued, waiting for open operation to finish
[app-scripts] [08:48:18] console.log: OPEN database: _ionicstorage - OK
[app-scripts] [08:48:18] console.log: DB opened: _ionicstorage
[app-scripts] [08:48:18] console.log: null

Without SQL Lite installed:
[app-scripts] [08:44:20] console.log: OPEN database: _ionicstorage
[app-scripts] [08:44:20] console.log: new transaction is queued, waiting for open operation to finish
[app-scripts] [08:44:20] console.log: OPEN database: _ionicstorage FAILED, aborting any pending transactions
[app-scripts] [08:44:20] console.log: Could not open database

Any suggestions on what I can do here?

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Redirecting to another web page on selecting an option in drop down box

February 14, 2019, 9:00 am
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@sravanilovely4 wrote:

Hello!
I want to redirect to another page when i select an option in drop down box in ionic.
I have tried different possibilities but nothing seems to work
Can you help me out with this…
I want it in 2 methods.

  1. passing a parameter while pushing to another page
  2. passing a value to service and getting back from service.
    Im happy if even 1 method works
    Thanks in advance :slightly_smiling_face:

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Node-forge store rsa.keyPair

February 14, 2019, 9:22 am
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@mmaddiona wrote:

Hello,

I am developing a Ionic app which use node-forge and in the specific I need to generate rsa key pair (forge.pki.rsa.KeyPair) and make sign and verify.

I obtained the key pair and I can sign and verify but I have a problem when I have to store in local storage my KeyPair.

I could convert the PrivateKey into json before the store and then parse the json when I retrieve but there is no way to obtain again a forge.pki.rsa.PrivateKey to use the sign function.

I could convert the PrivateKey into PEM but then when I try to get the privateKey back from the PEM I could just obtain a forge.pki.PrivateKey which doesn’t provide the sign function.

What do you suggest to me?

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net::ERR_SPDY_PROTOCOL_ERROR

February 14, 2019, 9:55 am
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@jdearana wrote:

Hello, I have an app that loads content from a server with wordpress, and worked fine, the wordpress have been migrated to another server, and now it doesn’t load images, debugging with the chrome console gives this error for each image

net::ERR_SPDY_PROTOCOL_ERROR

Any idea?

Thanks

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Need guidance with Ionic 4

February 14, 2019, 10:14 am
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@dev-gilbert wrote:

Hello guys, I’m new to this forum and the Ionic community. I need to learn Ionic for professional reasons and I was wondering if I could get some guidance on this forum.

I’ve read the documentation on how to install Ionic, etc. I’m a bit confused with the information found there. For example, I used the Ionic CLI to generate a new app, this command ionic start myApp blank, then the documentation says that to run the app I need to run this ionic serve, however when I check the package.json, the script looks different, so I have to use this command instead "start": "ng serve"

It looks like an Angular app, why is this?

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Ionic 4 login flow?

February 14, 2019, 10:38 am
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@dev-gilbert wrote:

Hello guys, I was wondering if there’s a guide somewhere that I can use to implement login/authentication using Ionic 4, I’ve seen some guides but most are for previous versions of Ionic.

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(Ionic -V4 )How to add authentication page before the split pane layout?

February 14, 2019, 10:49 am
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@Chandankbc wrote:

hello,

I want to build a dashboard kind of web app using ionic 4 and i’m using split pane component in app component.html file but this will make an entirely a spit pane view project but my requirement is i want a login and register page before the split pane layout appears. so please help me with this if any knows.

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Ioinic-nativ file plugin ReferenceError: documentsDirectory is not defined↵

February 14, 2019, 11:00 am
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@konipaka wrote:

Hello
Emulating my app for android and trying to store a pdf file with the cordova-file-plugin I get the error message:

core.js:1449 ERROR TypeError: Object(…) is not a function
at File.get [as dataDirectory] (index.js:649)
at MergeMapSubscriber.project (euro-bus-test.ts:83)
The code:

  import {File} from '@ionic-native/file/ngx'; 
  
  constructor(  public navCtrl: NavController,
                public navParams: NavParams, 
                public http: HttpClient,  
                private storage :Storage,
                private file: File) {
  }

private downloadFile(url:string, fileName : string): Observable<any> {
    return this.http.get(url, {responseType: 'blob'})
      .flatMap((data: Blob) => {
        return Observable.from(this.file.writeFile(this.file.dataDirectory, fileName, data, {replace: true}))
      })
  }

The error happens in this line of code:
this.file.writeFile(this.file.dataDirectory, fileName, data, {replace: true})
When I check the dataDirectory in the debugger it says:
ioinic-nativ file plugin ReferenceError: documentsDirectory is not defined
When I check this.file.dataDirectory it says: TypeError: Object(…) is not a function

The other point is, that the import only ‘works’, if I import from ‘file/ngx’ like in shown in the code. Without /ngx the imported ‘File’ is not used in the constructor, and the method writeFile() doesn’t exists (of course).This wasn’t nessecary yesterday.

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Como se puede crear proyecto en ionic v3

February 14, 2019, 11:02 am
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@josele2015 wrote:

como se puede crear proyecto en ionic v3 porque actualmente cada vez que creo un proyecto con el comando ionic start myapp blank se crea proyecto en version v4, pero por el momento no deseo manejar proyectos en ionic v4, hasta entender como funciona.

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How can I give drop shadow to ion-icon Ionic-v4

February 14, 2019, 11:15 am
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@kepuza wrote:

How can I give drop shadow to ion-icon Ionic-v4 not showing on white background

Thank you

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Ion-select v4 after correct model binding option not shown on form

February 14, 2019, 12:29 pm
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@pnaa78 wrote:

After I bind the values of 2 Cascade Dropdown the first one is OK, and the second has the correct value chosen but it only updates the form when I click the dropdown to select another item, which brings the correct value along

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Ionic refresher

February 14, 2019, 2:54 pm
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@RenzoM78 wrote:

Good evening,

I have a question about refreshing data which is loaded from an external json file. My script is this for now and at the doRefresh part I have to change something but dont know how

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { HttpClient } from '@angular/common/http';
import "rxjs/add/operator/map";
 
@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  users=[];
  page = 0;
  maximumPages = 10;
	
	text:any = {
    Year: 'Year',
    Month: 'Month',
    Weeks: "Weeks",
    Days: "Days",
    Hours: "Hours",
    Minutes: "Minutes",
    Seconds: "Seconds",
    MilliSeconds: "MilliSeconds"
  };
 
  constructor(public navCtrl: NavController, private httpClient: HttpClient) {
    this.loadUsers();
  }
 
  
	loadUsers(infiniteScroll?) {
 
    this.httpClient.get(`http://bla.nl/res/nieuws?page=${this.page}`)
    .subscribe(res => {
      this.users = this.users.concat(res['results']);
      if (infiniteScroll) {
        infiniteScroll.complete();
      }
    })
 
        
     

  }
 
  loadMore(infiniteScroll) {
    this.page++;
    this.loadUsers(infiniteScroll);
 
    if (this.page === this.maximumPages) {
      infiniteScroll.enable(false);
    }
  }
	
	doRefresh(refresher) {
    console.log('Begin async operation', refresher);
		
		.subscribe(res => {
      this.users = this.users.concat(res['results']);
		});
}
 
}

For now I get Declaration or statement expected. How can I add something before .subscribe which can work?

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Ionic post-request to nodejs

February 14, 2019, 2:55 pm
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@Gazoh wrote:

I am doing a post request to my nodeJS server like this.

So whenever i click on the button it gives a post with a JSON: if i console.log the JSON it gives me the good parameters so that’s not the problem.

 let data = {
        username: this.username,
        email: this.email,
        password1: this.password1,
        password2: this.password2
    };

    this.http.post("http://localhost:3000/", data, {}).subscribe(data => {
          this.dataUser = data;
        }, error => {
            console.log(error);
        });

and from my server.js i do this to get the post but i get a

POST http://localhost:3000/ 404 (Not Found)

so i have no clue how to fix this. On my server side so the server.js file i do this:

 app.get("/", (req, res) => {
            console.log({" / ": true});
            request('http://localhost:8100/create-account', function (error, response, body) {
                res.json(response);
                if(error) {
                    throw error;
                }
            });
        });

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Service storing Global Varible doesnt work on Device

February 14, 2019, 4:21 pm
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@Lona wrote:

Hi everyone, I’ve got the following service, which when running on ionic serve, it only calls the rest service once. When running on the device however, it calls it each time.

Why would it be different in the browser and the device? Anything I can do to fix this?

export class RestApiService {

    wordList: Observable<any>;

    constructor(private http: HttpClient) {
    }

    getDataOnce(): Observable<any> {
        try {
            console.log('getDataOnce() ');
            if (!this.wordList) {
                console.debug('REST API: ' + apiUrl);
                const response1 = this.http.get(apiUrl);
                this.wordList = forkJoin([response1]);
            }
            return this.wordList;
        } catch (e) {
            console.log(e);
        }
    }


}

ps I know i don’t need the forjoin.

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Sending push notification to the desktop browser from Ionic 3 application

February 14, 2019, 10:01 pm
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@dismipaul wrote:

Hi All,

I need to send a message from my ionic 3 application to a particular desktop browser. Can anyone suggest some ideas to accomplish this?

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Ionic4 ion-select with objects

February 14, 2019, 10:58 pm
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@Slavrix wrote:

In v3 we had the compareWith on ion-selects that allowed us to put our own comparison method in place to handle objects etc.

Whats the best way to do this now in v4 that compareWith is missing?

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Platform browser distribution

February 14, 2019, 11:17 pm
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@aflecler wrote:

Hello there,

i have the following question:
Besides the distributions for Android and IOS the client wants to use the app in a browser.
So is it possible to send him the “platform -> browser” package, and he is able to start (via shortcut e.g.) the app locally in his browser, without running the serve command?
Info: There will be no native plugins used.

Thanks in advance!

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Ionic 4 Paytm integration

February 14, 2019, 11:26 pm
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@niranjan401 wrote:

Hello,
i am trying to integrate the paytm payment gateway for ionic 4 Application, If you have any links or documents please provide me

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Ionic3 - LocalNotification onclick function

February 15, 2019, 1:01 am
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@KiMxne wrote:

Hello guys ! I’m trying to learn Ionic to make an app. At the moment I’m stuck with Local Notifications. So what I am trying is when you get a Notification and click on it, you should be redirected to another page. Only nothing is happening so far. I have searched the internet for a solution, yet nothing so far have helped…

I followed the docs for Local Notifications : https://ionicframework.com/docs/native/local-notifications/ .
Scheduling a notification is not a problem. Only Onclick.

  this.localNotifications.schedule({
    id: 1,
    title: msg.title,
    text: msg.body
  });

When I try this, nothing happens. No console Log, nothing…

  this.localNotifications.on('click').subscribe(notification => {
    // Logic here
    console.log("Notification Clicked");
    this.nav.setRoot(BerichtenPage);
  });

Other thing I tried, but with this one, I get an error :
‘Expected 1 arguments, but got 2.’

 this.localNotifications.on('click',(notification, state)=> {
    // Logic here
  });

So I’m completely clueless, I hope you guys can help me further with this problem :slight_smile:

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[STRIPE/PAYMENT] - Understand security token design

February 15, 2019, 1:02 am
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@gawel02 wrote:

Hi,
I have simple question about security design with Ionic. For this question i used “Stripe” plugin as exemple :
For used Stripe you need to set a private api TOKEN on Ionic application. This token is very important because you can create new payments if you are succefully autenticated.
So, it’s very easy to decompile Ionic app and every body can read this token…
How resolve this security breach?

That all ^^
Thank you for your answer.

Resources :

  • Plugins exemple :

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