This chapter explains how to deploy Flutter application in both Android and iOS platforms.

Android Application

• Change the application name using android:label entry in android manifest file. Android app manifest file, AndroidManifest.xml is located in <app dir>/android/app/src/main. It contains entire details about an android application. We can set the application name using android:label entry.

• Change launcher icon using android:icon entry in manifest file.

• Sign the app using standard option as necessary.

• Enable Proguard and Obfuscation using standard option, if necessary.

• Create a release APK file by running below command −

cd /path/to/my/application 
flutter build apk

• You can see an output as shown below −

Initializing gradle...                                            8.6s 
Resolving dependencies...                                        19.9s 
Calling mockable JAR artifact transform to create file: 
/Users/.gradle/caches/transforms-1/files-1.1/android.jar/ 
c30932f130afbf3fd90c131ef9069a0b/android.jar with input 
/Users/Library/Android/sdk/platforms/android-28/android.jar 
Running Gradle task ''assembleRelease''... 
Running Gradle task ''assembleRelease''... 
Done                                                             85.7s 
Built build/app/outputs/apk/release/app-release.apk (4.8MB).

• Install the APK on a device using the following command −

flutter install

• Publish the application into Google Playstore by creating an appbundle and push it into playstore using standard methods.

flutter build appbundle

iOS Application

• Register the iOS application in App Store Connect using standard method. Save the =Bundle ID used while registering the application.

• Update Display name in the XCode project setting to set the application name.

• Update Bundle Identifier in the XCode project setting to set the bundle id, which we used in step 1.

• Code sign as necessary using standard method.

• Add a new app icon as necessary using standard method.

• Generate IPA file using the following command −

flutter build ios

• Now, you can see the following output −

Building com.example.MyApp for device (ios-release)... 
Automatically signing iOS for device deployment 
using specified development team in Xcode project: 
Running Xcode build...                                   23.5s 
......................

• Test the application by pushing the application, IPA file into TestFlight using standard method.

• Finally, push the application into App Store using standard method.