Ionic4 Questions

I have two firebase table user_groups and groups like this

I'm trying to setup the facebook login in my ionic 4 application but it does not work when i use the cordova method. the console

For a university project i have to implement an ionic app using ionic 4. in the app you can scan a qr-code, which provides data about a

I've performed a query to firebase firestore and the data is being called perfectly. but i can't use any kind of ordering on this query.

I am using the ionic framework. how do i set storage to login information so if the app restart the user can go to the home page when filling the

Firebase api push payload from backend : { "registration_ids": [ "iksiok9zpip5cdcebq67wc7tnpduhmafjm1xdggi44s48jbxeu5iya"

I use the firebase plugin with

I need to sort a value-based list of a field from a firebase collection. this field is called "rankeamento", its maximum value is 10 and minimum

I'm trying to filter using (ionchange) on a searchbar just for a word on a long text (body of a letter) using firestore, but the problem i don't

Been trying to send a post http request from my android device but for some reason, it doesn't work due to

I'm going (using routerlink) to a details page of an object, but instead of the id, it appears undefined,

I'm using the following code to retrieve a list of objects from firebase. i need to remove an item from the list but i keep getting -1 for the

I have a problem in my app ionic 4, when i run ionic cordova platform add android i have this error : [error]

I'm working on an ionic4 app with angular and firebase. i was building the app to android using: ionic cordova run android, it was

<ion-select [(ngmodel)]="selection" (ionchange)="optionsfn(itinerary.daterange)"> <ion-select-option *ngfor="let itinerary of

I added the function as you mentioned but when i login it shows this error: typeerror: cannot set property 'photo' of undefined

I'm trying to show a presentalert inside a "then method", adding a document on a collection (firebase + ionic 4, if its successful, it should

I need to create a compound query that finds overlapping dates in firebase so i came up with the following:

I have an ionic 4 app that pulls in a list from firebase ngoninit to page a. when i navigate away from the page a and update the list on a

I am currently watching a tutorial bought from udemy, and during the implementation, i encountered a problem while implementing the like or

I am trying to get user information (for example: username) in my firebase database but in .ts file, i could not figure out how to

I am trying to use ion-range to store its data to firebase but i cannot figure out how to do it. my ion-range has 5 options and i used

So i'm storing a list of iitineraries in a private variable that i'm assigning on ngoninit with the following:

I am using ionic 4 with a react set up. ionic start myapp --type=react i am trying to add a simple fab button

I am implementing a google plus login in android with ionic 4. following this tutorial

First of all: i am very new to coding in general. sorry if this question is stupid ^^ i tried to build a simple app in ionic with firestore. now i

I would like to get unique data from doc from a collection with firebase firestore so i use to get all data: ngoninit()

I am using ionic 4 to upload the image from camera to the firebase storage. the upload goes fine but i am having hard time in getting the upload

I try to implement push-notifications to my ionic4-capacitor-app. in the app i have this code:

In my ionic app, sign up and log in works and the data is saved in firebase but i don't how to hide or show a content in home page when user is

Hi i did a page with ionic 4 base on angular, so i used the routing of angular with guards to manage the access. i get the information

I'm working on a project with react using typescript and i'm having a bad time figuring out why this error is happening,

I use sqlite native plugin for storing the text content but i need to do that with images too! ( for offline

I want to load all the data of a document, but i can not access the id of the document. when i print the object this.ressobj the id is visible,

In home.ts, i am getting one value in a function. i need that value in a variable outside that function. below is

I'm using firebase realtime database structure like shown below. and want to extract all model which has red

I'm trying to get the random key that is generated when i add data under "course" to firebase. i'm using ionic 4 for my application. [1]

A simple code to understand async/await is making me crazy. i have a button on click on which i am reading some value from localstorage

I have two services named 'patientsservice' and 'appointmentservice'. in third service 'appointedpatientsservice', i want to subscribe to

I want to implement push notifications with firebase cloud messenging service. i added : ionic cordova plugin add

I have documents in firestore collection called 'inventories' of the following structure: { creator: string, images:

I'm creating an ionic app that allows users to upload pics to firebase storage. the problem i'm having is that it's only changing the pic when a

I'm creating an ionic social app. you upload a pic to a firebase backend. i'm getting the following error message when go to the profile page:

I am trying to build and emulate an android app using ionic framework, but i am facing some issues after running ionic cordova build android. here

I have a problem with google maps and ionic v4. i created an app using ionic, firebase and google maps. in my home view i have a google maps view

This is my create page that i am pushing the data into my firebase. the data is saved on the firebase . there is a save button and when i click

I'm unable to upload images to firebase. any help would be appreciated. is anyone familiar with how to upload pictures to firebase in

I have error while compile ionic application. checking the license for package android sdk build-tools 26.0.2 in

When is use this.afauth.auth.signinwithcredential everything works great in my ionic app. i can sign in using google authentication and the user

User-profile.ts export interface userprofile { id: string; name: string; email: string; phone?: string;

I'm to get an answer on whether or not the way my database is setup will cause too many recursive reads and therefore exponentially increase the

Good morning , i have database in firestore below : **collections** **documents** **fields** 123

I've been stuck for months with ionic 4 and firestore. once i went to firestore and ionic 4 lots of things broke so i'm starting from scratch.

I am using ionic contacts plugin it is giving me the correct number of contacts in the phone but all the details field are null, i am

I'm getting this error when i try to upload some picture via ionic 4 using uploadcare (cannot display the image because of the error) how could i

I want to wrap my slide component in my own component to achieve atom methodology. but since ion-slide is not a direct child of

I am building an ionic app with ionic4. therefore i use firestore as database. also i want to use the firebase-authentication to login and

error: uncaught referenceerror: dismissmodal is not defined at htmlelement.onclick

I'm trying to retrieve some data from server, using ionic 4, the app actually works fine on browser but when i use a real device it doesnt work,

I'm trying to develop a small ionic v4 hybrid app. the app should contain a login and authentication. ionic v4 provides the whole routing package

I created an ionic 4 pwa using @angular/pwa, firebase hosting and this very

I'm trying to deploy a firebase cloud function with cors but it doesn't work. this is my code bellow, can someone help me with this ?

I want to show a message or hide spinner when the observable is complete but firestore observable is endless i guess. in other words it's "hot" as

I was wondering if ionic firebase has the same features as the native firebase. (let's say android). i'm especially interested in the database

I'm building a desktop application using ionic and electron. i started using electron v4.1.3 and i was able to require node

I'm tying to use google-place-api autocomplete in my project, but it gives me an error: typeerror: cannot read property

I'm trying to incorporate a firebase database into my ionic application using angular. i was following the instructions laid out on the

I have barcode component, when used it should show a barcodescanner in the correct width and height (the containers width and height). these

I followed a tutorial to do a login page with an external api, but my api is not working. in the localhost

I am trying to use the keycloak-js(from 4.4.0.final) library in my ionic(4) cordova application. i have followed the

I have an ionic chatting app and a nodejs server , it works fine , the only issue that is the server ip/port is hardcoded in a config object.

There is anyway to hide or don't display splash screen in ionic app, and splash screen time in capacitor is fewer or in cordova is fewer, and how

I am using rapidapi to get some data from a football app but can understand why this throw this error. i have tried this code but it

So say i have page one: this page contains multiple variables and a constructor. it could look something like this: export

On localhost:8100 with ionic serve command, app is calling json data via web api (asp.net core

I'm getting a list of documents using an array of document ids using firestore.getall(). the problem is that i can't call getall() since

I want to create an app that has an alert for check connection with two button one is exit for the exit app and two is try again for check

I have a piece of code that has issue when i am testing with ionic serve. i cannot figure out what went wrong after npm

I am fetching api call locally from laravel 4 as

I am using modal and want to call a function after dismiss the modal. i have tried ondiddismiss() method but

I'm developing a mobile app in ionic 4. but i don't know why i'm getting a null response from the api. the api is made on laravel and works fine

I'm making an app with vue and ionic, but when trying to load assets the paths are not resolving.

So i have been following the github

How to assign a number to type 'behaviorsubject<number>'?