Questions tagged as 'firebase-database'

Tagged questions
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Only bring specific data from firebase

Well, I'm trying to develop an app with ionic 3 and Firebase. But I'm having problems. You are bringing all requests to all users (getAll). I wanted to know the correct way for me to bring only the user requests themselves; getAll() { return...
asked by 19.09.2018 / 16:49
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Problem with Data Reading in Firebase

Hello, I am trying to read data in firebase and pass to an object, but when I used this object outside onDataChange it showed the object data as null So I did the following Log's to test: publicvoidreadDatas(){valueEventListener=ref.child(...
asked by 22.08.2018 / 06:39
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Do a search Within a custom Listview with firebase

Basically my project resembles a social network, using the firebase realtime database, however I came across a problem, I created a custom listView and my idea was ... How I had 2 childs > Users > Posts, in the Child post has a user email n...
asked by 02.08.2018 / 03:27
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How to return function value inside a firebase call?

I'm doing an html page that lists the issues logged in the firebase. If you can help me how do I get the function "getOpc" to return "listing" Firebase: - LGf4NE9IRvQlT089uQR --item: \ "Default select 2 \" --options --0: \ "Paris \" --...
asked by 25.07.2018 / 23:16
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Help with getDownloadUrl firebase

I have a project that records image and name of a product registration in firebase and I'm trying to load those images into a recyclerview, but stopped at getDownloadUrl. Since I am a beginner I have researched more without success.  If anyone c...
asked by 31.07.2018 / 04:52
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Delete records in Firebase

How do I delete some record inserted in the Firebase Realtime Database using Android? I've done all the insertion but I have not seen any methods for deleting already inserted records.     
asked by 05.07.2018 / 05:20
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How do I recover the name and user of the firebase?

Hello, I'm new here and I've already had problems, kkk. Well, after several tutorials I was able to create users to my application and save email, name and password. I would now like to be able to recover after logging in, and show the nam...
asked by 04.07.2018 / 04:24
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Show firebase data report

I have a project that I'm developing in ReactJS, which uses the firebase. It is a form that saves the data in the firebase and automatically appears on the referring page where it is being used. How do I get these data to appear on another page?...
asked by 03.07.2018 / 06:13
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View ProgressBar when logging in to Firebase

When I log in, I want a loading bar to appear while the login is being done. How do I get the process (time, size ...) of Firebase to be able to increment in the progress bar? Here is the login code: private void efetuarLogin() { final...
asked by 09.06.2018 / 03:42
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How do I wait for the result of a query in the Firestore?

My problem is this: I have a component that will list some categories, example: categories: Observable<any[]>; ngOnInit() { this.categories = this.categoryService.getAll(); } In the service I need to query the user first (to g...
asked by 18.04.2018 / 04:19