Insert data firebase android studio
Note that adding Firebase to your Unity project involves tasks both in the Firebase console and in your open Unity project (for example, you download Firebase config files from the console, then move them into your Unity project).
Create a Database
insert data in firebase database android |
If you haven't already, create a Firebase project: In the Firebase console, click Add project, then follow the on-screen instructions to create a Firebase project or to add Firebase services to an existing GCP project.
Navigate to the Database section of the Firebase console. You'll be prompted to select an existing Firebase project. Follow the database creation workflow.
Select a starting mode for your Firebase Security Rules:
- Test mode
Good for getting started with the mobile and web client libraries, but allows anyone to read and overwrite your data. After testing, make sure to review the Understand Firebase Realtime Database Rules section.
To get started with the web, iOS, or Android SDK, select test mode.
- Locked mode
Denies all reads and writes from mobile and web clients. Your authenticated application servers can still access your database.
Click Done.
When you enable Realtime Database, it also enables the API in the Cloud API Manager.
Setting up public access
The Realtime Database provides a declarative rules language that allows you to define how your data should be structured, how it should be indexed, and when your data can be read from and written to. By default, read and write access to your database is restricted so only authenticated users can read or write data. To get started without setting up Authentication, you can configure your rules for public access. This does make your database open to anyone, even people not using your app, so be sure to restrict your database again when you set up authentication.
Configuring the SDK for the Unity Editor.
When testing your scene in the Unity Editor, you can use the Realtime Database. You must configure the SDK with the proper database URL. Call SetEditorDatabaseUrl with the url of your database.
Structure Your Database
Before you begin
Before you can use Realtime Database, you need to:
Register your Unity project and configure it to use Firebase.
If your Unity project already uses Firebase, then it's already registered and configured for Firebase.
If you don't have a Unity project, you can download a sample app.
Add the Firebase Unity SDK (specifically,
FirebaseDatabase.unitypackage
) to your Unity project.
Note that adding Firebase to your Unity project involves tasks both in the Firebase console and in your open Unity project (for example, you download Firebase config files from the console, then move them into your Unity project).
Structuring Data
This guide covers some of the key concepts in data architecture and best practices for structuring the JSON data in your Firebase Realtime Database.
Building a properly structured database requires quite a bit of forethought. Most importantly, you need to plan for how data is going to be saved and later retrieved to make that process as easy as possible.
How data is structured: it's a JSON tree
All Firebase Realtime Database data is stored as JSON objects. You can think of the database as a cloud-hosted JSON tree. Unlike a SQL database, there are no tables or records. When you add data to the JSON tree, it becomes a node in the existing JSON structure with an associated key. You can provide your own keys, such as user IDs or semantic names, or they can be provided for you using the Push()
method.
Although the database uses a JSON tree, data stored in the database can be represented as certain native types that correspond to available JSON types to help you write more maintainable code.
Best practices for data structure
Avoid nesting data
Because the Firebase Realtime Database allows nesting data up to 32 levels deep, you might be tempted to think that this should be the default structure. However, when you fetch data at a location in your database, you also retrieve all of its child nodes. In addition, when you grant someone read or write access at a node in your database, you also grant them access to all data under that node. Therefore, in practice, it's best to keep your data structure as flat as possible.
Create data that scales
When building apps, it's often better to download a subset of a list. This is particularly common if the list contains thousands of records. When this relationship is static and one-directional, you can simply nest the child objects under the parent.
Sometimes, this relationship is more dynamic, or it may be necessary to denormalize this data. Many times you can denormalize the data by using a query to retrieve a subset of the data, as discussed in Retrieve Data.
But even this may be insufficient. Consider, for example, a two-way relationship between users and groups. Users can belong to a group, and groups comprise a list of users. When it comes time to decide which groups a user belongs to, things get complicated.
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