This is a new React Native project, bootstrapped using @react-native-community/cli.

Getting Started

Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding.

Step 1: Start the Metro Server

First, you will need to start Metro, the JavaScript bundler that ships with React Native.

To start Metro, run the following command from the root of your React Native project:

# using npm
npm start

# OR using Yarn
yarn start

Step 2: Start your Application

Let Metro Bundler run in its own terminal. Open a new terminal from the root of your React Native project. Run the following command to start your Android or iOS app:

For Android

# using npm
npm run android

# OR using Yarn
yarn android

For iOS

# using npm
npm run ios

# OR using Yarn
yarn ios

If everything is set up correctly, you should see your new app running in your Android Emulator or iOS Simulator shortly provided you have set up your emulator/simulator correctly.

This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.

Step 3: Modifying your App

Now that you have successfully run the app, let's modify it.

1. Open App.tsx in your text editor of choice and edit some lines.

2. For Android: Press the R key twice or select "Reload" from the Developer Menu (Ctrl + M (on Window and Linux) or Cmd ⌘ + M (on macOS)) to see your changes!

   For iOS: Hit Cmd ⌘ + R in your iOS Simulator to reload the app and see your changes!

Congratulations! 🎉

You've successfully run and modified your React Native App. 🥳

Now what?

• If you want to add this new React Native code to an existing application, check out the Integration guide.
• If you're curious to learn more about React Native, check out the Introduction to React Native.

Troubleshooting

If you can't get this to work, see the Troubleshooting page.

Learn More

To learn more about React Native, take a look at the following resources:

• React Native Website - learn more about React Native.
• Getting Started - an overview of React Native and how setup your environment.
• Learn the Basics - a guided tour of the React Native basics.
• Blog - read the latest official React Native Blog posts.
• @facebook/react-native - the Open Source; GitHub repository for React Native.

Creating the release

cd android/app

run to create sign key:

  keytool -genkey -v -keystore android.keystore -alias androidkey -keyalg RSA -keysize 2048 -validity 10000

--> name and last name: farman ali --> password will be asked and other information : android --> name of keystore file (my-release-key.keystore): android.keystore --> file alias (my-release-key): androidkey

to add sign in key edit android/app/build.gradle

--> changing password you inserted, and use alias as my-key-alias in place of androiddebugkey signingConfigs { release { storeFile file('android.keystore') storePassword 'android' keyAlias 'androidkey' keyPassword 'android' } } and also change debug to release:

        to-->
        signingConfig signingConfigs.release -->

versions handling

edit android/app/build.gradle

defaultConfig { applicationId "com.irs" minSdkVersion rootProject.ext.minSdkVersion targetSdkVersion rootProject.ext.targetSdkVersion versionCode 1 versionName "1.0" } here change versionName and versionCode

using library version handling

add first npm install react-native-version first change the version in package.json file and then run command

react-native-version --never-amend

cd android or ./gradlew bundleRelease ./gradlew assembleRelease

location of apk: file: android/app/build/outputs/apk/release/app-release.apk path: android\app\build\outputs\apk\release

location of bundle file: android\app\build\outputs\bundle\release

port binding with backened

adb -s emulator-5554 forward tcp:8080 tcp:8080

for changing the package name or renaming

npx react-native-rename 'name will be changed' -b 'new' example: npx react-native-rename 'simple math' -b 'com.notjustdev'

autolinking issue

remove build generated folders