Questions tagged as 'firebase'

Tagged questions
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Ionic 3 Firebase I have the Key - How do I access the data?

Firstly, I must clarify that I am new to programming, I decided to venture with ionic to start developing. My question is when I want to take firebase information following a route with the respective key: This is my users table: This is my...
asked by 10.08.2018 / 00:59
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How to receive notifications that were sent to a topic before the subscription to this same

I am making an application in which notifications should be received only when being in a place at the moment to simulate it, I use a button that when pressed it is subscribed to topic a when you press it again to de-subscribe. The pro...
asked by 06.09.2018 / 00:30
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ref.child ('route'). update Duplicate queries

I want to implement a Functions in Firebase but something strange happens when running a Cloud Functions. All the flow is correct the searches are done well however when I add an update within my "if" the results are duplicated. When I com...
asked by 02.08.2018 / 06:56
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How to launch activity by means of a notification, when the device is blocked (Off the screen)?

I have an application which I need to launch an activity of type called (timbre), the problem is when the device is blocked the activity is not launched, in any other situation if it is launched ... My code to perform that function is this: @O...
asked by 04.07.2018 / 06:18
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global variable scope within a promise

I have this snippet of code in node.js, similar to javascript, well what happens is that it uses asynchronous methods to perform a validation of fields that is entered through a csv file, therefore I must analyze value by value of the fix _da...
asked by 15.07.2018 / 00:46
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Get permissions for user_birthday and gender from the Facebook API [closed]

I have an app made with vue and firebase, which has a login, for login I use the firebase auth service. However, I need to obtain certain user data but it seems that by default they are not included by default. Firebase auth has a method to add...
asked by 26.06.2018 / 17:22
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DatabaseException: Can not convert object of type java.lang.String to type

I'm giving this bug in a recyclerview and I do not know how to fix it, I'm trying to show the events that I have ... I use another recyclerView in the app and it works without problems public class User { private String name; pr...
asked by 12.05.2018 / 01:34
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How to deserialize data from Firebase with inheritance in AndroidStudio

I'm doing a very simple app to learn how to use FireBase correctly. My problem comes when I want to deserialize objects that inherit from X classe. Example: The AnimalManager class will be the one containing my ArrayList The classes...
asked by 13.04.2018 / 22:37
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Upload data in Firebase android

I try to create a database with the Users but it gives me a fault in the line of setValue, I remember that sometimes if it worked for me and I do not know what the problem is now, I would appreciate the help user = FirebaseAuth.getInstance...
asked by 22.04.2018 / 20:09
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I have a problem wanting to read a data by id =, it does not show me the email that I keep in that id

I try to read a data by id = which is an email that I receive through Firebase, everything works well within the auth, it reads the data from the Database and shows it in the WebApp, however when I want to read the data to through the id = outsi...
asked by 05.04.2018 / 03:42