Autenticação no React Native / ReactJS com Context API & Hooks | Masterclass #12

Rocketseat・2 minutes read

Creating an authentication flow within Britney is explained, emphasizing the use of ipe ai and stack navigation. The text covers implementing user authentication, context management, and API token usage, detailing the steps for a fully functional and updated application.

Insights

The text outlines a straightforward authentication flow using ipe ai in React Native, emphasizing the shift from tools like redux for simpler operations. It details creating a custom authentication stack named "off," simulating user authentication with a two-second response time, and implementing context authentication for centralized user information management across components.
It provides a comprehensive guide on utilizing asyncstorage for storing user data, emphasizing the caution against beta versions for production applications. The text also highlights the importance of updating applications efficiently by importing new files, removing unnecessary imports, and making code changes to ensure functionality, ultimately resulting in a fully operational and updated application.

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Recent questions

How can I enhance project understanding?
By using TypeScript for project collaboration and clarity.
What is the importance of stack navigation?
Essential for back and forth movements in operations.
How can I manage user authentication easily?
Implement context authentication for shared information.
What is the purpose of asyncstorage?
To store user data asynchronously in applications.
How can I update and maintain an application?
By following detailed steps to ensure functionality.

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Summary

00:00

"Creating Authentication Flow with Britney in React"

The text discusses creating an authentication flow within Britney, which can be replicated easily in iett js on the web.
It highlights the simplicity of the process compared to other environments like creek neide.
The authentication flow is explained using ipe ai, an API with significant improvements since version 16.8.
The text mentions the shift towards using ipe ai over tools like redux for simpler operations.
It introduces creating a custom hulk called ios of beauty for managing authentication.
Instructions are provided for creating a project with kinect woman in react native, emphasizing the use of typescript.
Details on using npx react native to initiate the project without installing react-native-slider globally are given.
The importance of typescript for enhancing project understanding and collaboration is highlighted.
Instructions for running the project in iOS simulator or Android emulator are provided.
The process of installing necessary packages like react-navigation and react-native-gesture-handler for navigation is explained.

13:30

"Essential Stack Navigation for User Authentication"

Stack navigation is essential for operations that involve back and forth movements.
The latest version of stack navigation is iacs navigation version 656.
An authentication stack called "off" is created, containing a navigator and routes.
Each screen accessible to the user is represented by a route within the "off" stack.
A service named "of" is created to simulate user authentication and return an authentication token.
An index.tsx file controls which stack is displayed based on user login status.
A button is added for user login, triggering a function to call the authentication service.
The authentication service simulates a two-second response time and returns an authentication token.
The application now needs to store the authentication token and user data for future access.
Context authentication will be implemented to manage user authentication in a simple manner.

26:49

Centralizing Authentication Logic with Context Provider

To import the alpha context, use the command "import alpha from './alpha/context/alpha'".
By wrapping the entire application with the alpha context provider, all routes and components gain access to the context information.
The context provider allows for easy access to shared information across the application, avoiding the need for local state management.
To test the context, when creating a provider, a value must be passed to define the information within the context.
The authentication logic should be centralized within the context to ensure consistent access to user information across components.
The authentication state can be controlled within the context provider, ensuring all components receive updated authentication information.
As the application grows, multiple contexts can be utilized for different functionalities, enhancing flexibility.
Define the format of the context using TypeScript interfaces to specify the information stored within the context.
Ensure the initial value passed to the context matches the defined format to avoid issues with accessing context information.
Centralize authentication-related functions within the context provider to streamline authentication processes and provide relevant information to components.

40:55

"Async Authentication and Data Storage Implementation"

The function "exit" is saved after the user returns, indicating a significant step in the application.
The function is asynchronous, taking time to provide a response.
Authentication responsibilities are shifted from components to the context for shared information among components.
The response includes a token and user data, necessitating the creation of a sponsor to return both.
The user's authentication status is crucial, with a boolean value indicating authentication.
The state within the context is created to store user information for authentication.
The user's authentication status determines the route displayed in the application.
A logout function is implemented within the context to clear user data and authentication status.
The use of stories for asynchronous storage of user data is introduced.
Installation and usage of asyncstorage for storing user data is detailed, with a caution against using beta versions in production applications.

54:42

Efficiently Save, Load, and Display Data

To save information in img format, use the good ones provided and save them accordingly.
Ensure the token is already present, eliminating the need for additional actions.
Utilize the ios effect dori to trigger a check upon entering the screen, creating a function called load stories.
Retrieve data from history and store it in variables for stories and start talking.
Check if the variables exist and contain content, then fill in the user's data with the stored information.
Transform the stored data from JSON format back into an object for use.
Save the faces and reload the application to view the changes on the dashboard.
Create a variable to indicate loading status and update it accordingly.
Show login information through the context and remove the loading indicator once finished.
Implement authentication token usage in API requests by setting headers upon login and token retrieval.

01:08:10

Updating Application and Complete Authentication Process

In the process of updating an application, the text details steps such as importing new files, removing unnecessary imports, and making simple changes throughout the code to ensure functionality. This includes replacing imports with new names like "ralph" and "alf," removing unused imports, and scrolling through the application to fix errors, ultimately resulting in a fully functional and updated application.
The text also explains the process of complete authentication within the application, covering aspects like making API calls, obtaining tokens, storing user information, creating contexts for data availability, controlling the state of information, and handling authentication and data operations. It emphasizes the seamless transition of these processes to React JS on the web, suggesting the use of "location history" for faster synchronous operations instead of "stories."

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