React navigation 5 login example

Login and SignUp is the base of any application. For example finance, E-Commerce, Social Media, etc. This is also the most requested example which I prepared 3 times but due to some updates or anything else I was unable to post it.

I am also planning to make some more ready to use examples, If you have any suggestions please suggest me from here. In this example, we are going to use the same React Navigation. Some of the regular users will think why I am explaining React Navigation here? The main reason for Login and Sign Up example is to provide you the basic structure of Login and SignUp as well as the understanding of React Navigation. It will come for the 5 Second and then will disappear after that On the same screen, we will have an image and ActivityIndicator component.

We will use a setTimeout function to manage the screen visibility. I am using AsyncStorage to store the session variable but is you have any better option then you can use that. Login Screen It will have 2 inputs for the user Email and Password with basic empty field checks and a button to trigger an authentication service. Please note I am using a dummy API for the Login it will not work on the basis of registration done form the registration form. You need to manage the Login API on your own.

For now, you can use the same API in the code below which has the following credentials set. It will have 4 inputs for Name, Email, Age, and Address with basic empty field checks and a button to trigger a registration service.

You need to manage the Registration API on your own. For now, you can use the same API in the code below. Home Screen It is the landing screen after login or from the Splash Screen directly in case the user has already logged in. This is a dummy screen with some text. Setting Screen It shares the navigation drawer with Home Screen. It also has some dummy content.

We are going to use three navigators in this example:. I hope you are clear with the screens and navigators now. I have shared a command below to create the structure using the command line in once after creating the project.

Here are the png files, To download and to place in the Image directory. That was a lot of things.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Anyone has experience in this and can share? Oct I found this ridiculously confusing, so here is my solution starting from the top down:. I recommend starting a new project and literally just paste all this in and study it after. I commented the code big-time, so if you are stuck on any specific area, maybe the context can help you get back on track.

I will show you a sample here. This isn't mine, I just typed it out for you in this rickety StackOverflow editor. Please give me thumbs up if you appreciate it :. In other use cases, you may prefer the higher-order component. They work exactly the same as React for web. Stephen Grider's tutorials on Udemy are the best, period.

The rest is old familiar. My examples should accelerate you into a savage productivity machine. You will find it very useful if you wish to wipe off your navigation stack so the user cannot press Android Hardware Back Button and go back to a screen that requires authentication:.

It is designed to be handled in small "pure navigation" fragments that compose well together. If you employ the strategy described above, you will find yourself creating re-useable navigation logic that you can just paste around as needed. Top level navigator should be a stack navigator that renders a login screen.

Another screen within this top-most navigator should be your app's Main-Navigator. When your login state is satisfied, you reset the main stack to just the Main-Navigator. B- What if you need to navigate outside of the Main-Navigation environment eg: your main nav is tabs and you want a non-tab view?

If your top-most navigator is a Stack-Navigator that presents Login screens and other Navigators, then your app's navigation structure can properly scale. I do not believe the conditional rendering of a login screen or stack navigator, as suggested above, is a good idea I've gone down that road. This is my solution based on parker recommendation :. Create a new react-native project, then copy the code below into index. There is now good documentation on the react-navigation site about the authentication flow.

Its good that you are using react-navigation which has a good support for most of the features your app requires. Heres my advice. React-native has this nice feature state variables which when changed views are re-rendered.

Remember to remove the style attributes in the login screen and add yours including import, I am leaving them there as it can help you have and idea how you can arrange you react project.

Authentication flows

However it still works without the styles so you can take them off, clicking the login button will take you to the Home screen, since the state changed and the view has to be re-rendered according to new state.Managing user authentication flows in your mobile apps is often a fundamental requirement to allow only authorized users to access data. The react-navigation library in its latest version version 5 allows you to implement a custom authentication flow in React Native apps. Ensure your dev environment includes the following required packages:.

For a complete walkthrough on setting up a development environment for React Native, you can go through the official documentation here. Also, do note that the following tutorial is going to use react-native version 0.

React Navigation

To start, create a new React Native project and install the necessary dependencies to set up and use the react-navigation library:. From React Native 0. Note: Make sure you have CocoaPods installed. Lastly, to save the app from crashing in a production environment, add the following line in index. To access the Firebase credentials for each mobile OS platform and configure them to use the Firebase SDK, create a new Firebase project from the Firebase consoleor if you already have access to a project in your console, you can skip this step.

Create a new project as shown below:. Complete the details of your Firebase project:. You should see your newly-created project in that dashboard. Version 6 of this library wants you to only install dependencies based on Firebase features that you want to use. Open a terminal window to install these dependencies:. Go to the second tab Sign-in method and make sure to enable the Anonymous sign-in provider.

Many of the most engaging mobile apps have a secret ingredient — machine learning. Firebase provides a file called GoogleService-Info. Then download the GoogleService-Info.

Right-click on the project name and choose the Add Files option—then select the appropriate file to add to this project.Most apps require that a user authenticate in some way to have access to data associated with a user or other private content. Typically the flow will look like this:. Note: We say "authentication screens" because usually there is more than one.

You may have a main screen with a username and password field, another for "forgot password", and another set for sign up. This is the behavior that we want from the authentication flow: when users sign in, we want to throw away the state of the authentication flow and unmount all of the screens related to authentication, and when we press the hardware back button we expect to not be able to go back to the authentication flow.

We can define different screens based on some condition. For example, if the user is signed in, we can define HomeProfileSettings etc. If the user is not signed in, we can define SignIn and SignUp screens. This makes it impossible to navigate to the HomeProfile and Settings screens when the user is not signed in, and to SignIn and SignUp screens when the user is signed in. This pattern has been in use by other routing libraries such as React Router for a long time, and is commonly known as "Protected routes".

Here, our screens which need the user to be signed in are "protected" and cannot be navigated to by other means if the user is not signed in. The magic happens when the value of the isSignedIn variable changes. Let's say, initially isSignedIn is false.

This means, either SignIn or SignUp screens are shown. After the user signs in, the value of isSignedIn will change to true. React Navigation will see that the SignIn and SignUp screens are no longer defined and so it will remove them.

react navigation 5 login example

Then it'll show the Home screen automatically because that's the first screen defined when isSignedIn is true. It's important to note that when using such a setup, you don't need to navigate to the Home screen manually by calling navigation. React Navigation will automatically navigate to the Home screen when isSignedIn becomes true. This takes advantage of a new feature in React Navigation: being able to dynamically define and alter the screen definitions of a navigator based on props or state.

The example shows stack navigator, but you can use the same approach with any navigator. By conditionally defining different screens based on a variable, we can implement auth flow in a simple way that doesn't require additional logic to make sure that the correct screen is shown.

In our navigator, we can conditionally define appropriate screens. For our case, let's say we have 3 screens:. In the above snippet, isLoading means that we're still checking if we have a token. This can usually be done by checking if we have a token in AsyncStorage and validating the token.

After we get the token and if it's valid, we need to set the userToken. We also have another state called isSignout to have a different animation on sign out. The main thing to notice is that we're conditionally defining screens based on these state variables:. Here, we're conditionally defining one screen for each case.

react navigation 5 login example

But you could also define multiple screens.React-navigation is the navigation library that comes to my mind when we talk about navigation in React Native. I'm a big fan of this library and it's always the first solution I use to handle navigation in React Native. This is in part becausae it has an awesome and easy API and is very customizable. I'm writing this article because version 5 just went from beta to stable.

It comes with some feature changes and a new API design that provides a simple and different way to declare routes. In this article, we are going to go through the new APIs and look at ways to use them in our applications.

Originally published on saidhayani. The latest versions of react-navigation use many third party library like react-native-gesture-handler for animation and handling transitions.

So you always need to install those libraries. The new API introduces dynamism in initializing routes. Previously it was done statically - basically, we had to define our Routes in a config file. The new API comes with dynamic components. The new way to declare the Routes will be much like the following. This has been the most requested feature by the community for a long time.

I always had issues with the old method static and it was really hard to change the navigation behavior dynamically. With older versions of react-navigation we had to define static options. And there was no way to change this dynamically.

React-navigation comes with a dynamic method which is quite simple. We can set the options to any screen using just props. With dynamic options, I can change the title based on authentication. This is more useful especially if you are using dynamic themes or if you are willing to implement dark mode in your app. The new API introduced some custom hooks to perform certain actions.

In previous versions, for example, if I had to get the currentName of the active screen, I had to create some helpers to do that for me pretty much like the following. The hooks API helps me avoid all these things and makes it easier for me to access the Navigation API with one single line using a hook. We can do the same thing with the useNavigationState Hook.

It gives us access to the navigation state. I highly recommend that you check them out. The new react-navigation API definitely moves from static to dynamic.Navigation in React Native is easy to implement, all thanks goes to Navigation library which offers complete solution for Android and iOS.

We will not just enable routing and navigation in React Native app but also look at how to customize the header bar, how to style the header bar, how to center the header title and how to set the initial route in react native application. When the user clicks on a link, the URL is pushed to the browser history stack.

When the user clicks on the back button, the browser displays the item from the top of the history stack, so the current page is now the previously visited page. To know more about React Native Navigation, check out here. Download the Expo app to locally check your Navigation app. Now, we will install the required packages in our React Native project, and these packages will allow the user to navigate between the various screens in iOS and Android apps.

React Navigation is made up of some core utilities and those are then used by navigators to create the navigation structure in your app. Next, create three screens that will help us to define the routes in our React Native application. Go to terminal and run the following command. The StackNavigator provides a way for your app to transition between screens where each new screen is placed on top of a stack. Open App. We can set up the header bar for every route separately.

However, we are going to configure a common header bar for every screen. Navigator tag. We style the header bar applied headerStyle, background color, and center the title for react-navigation header. Conclusion Finally, React Native Navigation v5 tutorial is over, in this tutorial, we learned how to configure stack navigation in react native app and how to customize the react-native header bar from scratch.

Why React Native is NOT garbage.

You can download the complete code of this tutorial on this Git repository. This is a step by step comprehensive React Native Navigation v5 tutorial. Table of Contents React Native Navigation 5. React Native Navigation 5. Install Navigation Packages in React Native App Now, we will install the required packages in our React Native project, and these packages will allow the user to navigate between the various screens in iOS and Android apps.

Create Screens in React Native Next, create three screens that will help us to define the routes in our React Native application. Adding Stack Navigator in React Native App The StackNavigator provides a way for your app to transition between screens where each new screen is placed on top of a stack. Inside the Stack. Screen tag we declared the route for enabling the routing in react native. Then, finally, we wrapped NavStack with NavigationContainer to navigate between screens.

Here is the final App. Happy Coding!Developer, cat dad, and devout pizza lover. To read an updated article please check out the new tutorial. I've found people can be intimidated by combining different navigators in React Navigation to accomplish more "complex" navigation patterns. Today I want to briefly walk you through a more complex navigation set up. It will include:. Be sure to install React Navigation before you try using the library.

These instructions are up to date as of v4 of React Navigation and React Native v0. Before we get started I'll be adding an Example. This component generates a random background color and will display all of the available routes from the current screen. To accomplish the switching between different "states" of a user's journey we'll use a switch navigator so the user can't go back.

Obviously, we'll have a screen for the main app journey. We'll also have one for un-authenticated users. Additionally, I like to add a Loading screen of sorts. Typically this won't display anything - it's just there to determine if a user is authenticated or not and route them to the right place. Want to become the best possible React Native developer?

Consider getting a React Native School membership! You'll get access to hundreds of tutorials, a dozen classes, and a community full of React Native developers. If a user is not authenticated we'll set up a Stack navigator for them to go from a landing screen, sign in, create account, forgot password, or reset password. The typical options you see when you need to authenticate.

Once the user is in the app we'll use tabs to give them the ability to access the main features of our app - a feed, search, and a discover page. We'll then replace the App item in our App navigator with the result of creating our tabs. The output of creating any navigator is just a component so we can nest them infinitely in React Navigation. Just like we nested the MainTabs in our App navigator we'll allow each tab in our app to have its own stack navigator.

Doing it this way means that each tab is going to carry its own state so a user can go to the details screen of one tab, switch to another, and when coming back are able to maintain the same state for each tab.

Additionally, with this example you can see that navigators will grab the closest matching route name. That means we can reuse screen names and each stack will just grab the closest available Details screen either in its stack or above it in the navigator hierarchy. Same story with a drawer.

react navigation 5 login example

We'll create the navigator we're also creating a settings stack to give us a reason for the drawer and render that as a screen. This time we'll replace rendering MainTabs with MainDrawer and render our tabs within the drawer. Building this hierarchy means we're just adding more navigators but everything that was already there will continue to work.

Finally, we want to add a navigator that moves from bottom to top and will cover any other screen. That means it needs to be at the root most position of our stack. If it's at the root then it will be available to be rendered from any of its children.

Complex Navigation Example with React Navigation v4

You can find a working example on Snack. Want to further level up as a React Native developer? Join React Native School!


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