App Store submission in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the app version in pubspec.yaml.

Flutter

version: 1.0.0+[1]

Drag options to blanks, or click blank then click option'

A1

B4

C3

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using a build number of 0 which is invalid.

Omitting the build number after the plus sign.

The build number after the plus sign is set to 1 for the first release.

2fill in blank

medium

Complete the code to add the iOS deployment target in ios/Podfile.

Flutter

platform :ios, '[1]'

Drag options to blanks, or click blank then click option'

A10.0

B9.0

C11.0

D12.0

Attempts:

3 left

💡 Hint

Common Mistakes

Setting the platform version too low causing build errors.

Using a version not supported by Flutter.

The default and recommended minimum iOS deployment target for Flutter apps is 12.0.

3fill in blank

hard

Fix the error in the Info.plist key for app display name.

Flutter

<key>CFBundleDisplayName</key>
<string>[1]</string>

Drag options to blanks, or click blank then click option'

AMyApp

Bmy_app

CMy App

DmyApp

Attempts:

3 left

💡 Hint

Common Mistakes

Using underscores instead of spaces.

Using camelCase which looks less friendly.

The display name should be a user-friendly string with spaces if needed.

4fill in blank

hard

Fill both blanks to set the app icon in Xcode project.

Flutter

flutter_icons:
  android: false
  ios: true
  image_path_ios: [1]
  remove_alpha_ios: [2]

Drag options to blanks, or click blank then click option'

Aassets/icon.png

Btrue

Cfalse

Dassets/app_icon.png

Attempts:

3 left

💡 Hint

Common Mistakes

Using the Android icon path for iOS.

Setting remove_alpha_ios to false causing icon issues.

The iOS icon path should point to the correct icon file and remove_alpha_ios is usually true to remove alpha channel for iOS icons per Apple guidelines.

5fill in blank

hard

Fill all three blanks to configure app signing in Xcode project file.

Flutter

signing:
  team_id: [1]
  provisioning_profile: [2]
  code_sign_identity: [3]

Drag options to blanks, or click blank then click option'

AABC123XYZ

Bmatch AppStore com.example.app

CiPhone Distribution

DXYZ789ABC

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up team ID and provisioning profile values.

Using wrong code sign identity string.

Team ID is a unique code, provisioning profile matches the App Store profile for the app, and code sign identity is 'iPhone Distribution' for App Store submission.

Practice

1. What is the primary tool used to upload a Flutter app to the Apple App Store?

easy

A. Xcode

B. Android Studio

C. Visual Studio Code

D. Firebase Console

Solution

1. Step 1: Identify the platform for iOS app submission

   Apple requires apps to be uploaded using Xcode or Application Loader, both part of Xcode tools.

2. Step 2: Recognize Flutter's role

   Flutter builds the app, but Xcode is needed to upload it to the App Store.

3. Final Answer:

   Xcode -> Option A

4. Quick Check:

   Upload tool for iOS = Xcode [OK]

Hint: Remember: iOS apps upload via Xcode, not Android tools [OK]

Common Mistakes:

• Confusing Android Studio with Xcode
• Thinking Flutter uploads directly
• Using Firebase Console for iOS upload

2. Which of the following is the correct command to build an iOS release app in Flutter before submission?

easy

A. flutter build apk --release

B. flutter build ios --release

C. flutter run ios

D. flutter build ios

Solution

1. Step 1: Understand Flutter build commands

   To build an iOS app for release, the command is flutter build ios --release.

2. Step 2: Eliminate incorrect options

   flutter build apk is for Android, flutter run ios runs debug, and flutter build ios defaults to debug mode without --release.

3. Final Answer:

   flutter build ios --release -> Option B

4. Quick Check:

   iOS release build = flutter build ios --release [OK]

Hint: Use --release flag to build production iOS app [OK]

Common Mistakes:

• Using apk build for iOS
• Omitting --release flag
• Using flutter run instead of build

3. Consider this Flutter command output snippet after running flutter build ios --release:

Built ios/Runner.app (archived) to build/ios/iphoneos/Runner.app

What does this output indicate?

medium

A. The app was built successfully and is ready for Xcode upload

B. The build failed due to missing Runner.app

C. The app is built but only for Android devices

D. The command only runs the app on a simulator

Solution

1. Step 1: Interpret the build output message

   The message shows the app was built and archived at the specified path.

2. Step 2: Understand the context of iOS build

   Since it mentions ios/Runner.app and iphoneos, it means the app is built for real iOS devices, ready for upload.

3. Final Answer:

   The app was built successfully and is ready for Xcode upload -> Option A

4. Quick Check:

   Build output shows success = The app was built successfully and is ready for Xcode upload [OK]

Hint: Look for 'archived' and path to confirm successful build [OK]

Common Mistakes:

• Confusing build success with failure
• Thinking it's Android build
• Assuming it runs on simulator only

4. You tried submitting your Flutter app to the App Store but got a rejection due to missing app icons. What is the most likely cause?

medium

A. You used the wrong Flutter channel

B. You did not run flutter build apk

C. You forgot to add app icons in the iOS asset catalog

D. You did not enable internet permission in Info.plist

Solution

1. Step 1: Identify the cause of missing app icons

   App Store requires app icons in the iOS asset catalog; missing icons cause rejection.

2. Step 2: Eliminate unrelated options

   flutter build apk is for Android, Flutter channel does not affect icons, and internet permission is unrelated to icons.

3. Final Answer:

   You forgot to add app icons in the iOS asset catalog -> Option C

4. Quick Check:

   Missing icons = forgot iOS asset catalog icons [OK]

Hint: Always add app icons in Xcode asset catalog before submission [OK]

Common Mistakes:

• Confusing Android build commands
• Ignoring asset catalog setup
• Assuming permissions cause icon issues

5. You want to submit your Flutter app to the App Store but receive an error about the app's bundle identifier not matching your App Store Connect record. What should you do to fix this?

hard

A. Change the app name in pubspec.yaml to match the App Store Connect record

B. Delete and recreate your Apple developer account

C. Rebuild the app using flutter build apk

D. Update the bundle identifier in Xcode to match the App Store Connect record

Solution

1. Step 1: Understand bundle identifier importance

   The bundle identifier uniquely identifies your app and must match exactly between Xcode and App Store Connect.

2. Step 2: Fix the mismatch

   Update the bundle identifier in Xcode project settings to match the App Store Connect record.

3. Step 3: Ignore unrelated fixes

   Changing app name or rebuilding Android APK won't fix bundle ID issues; deleting account is extreme and unnecessary.

4. Final Answer:

   Update the bundle identifier in Xcode to match the App Store Connect record -> Option D

5. Quick Check:

   Bundle ID mismatch = fix in Xcode [OK]

Hint: Bundle ID must match App Store Connect exactly [OK]

Common Mistakes:

• Changing app name instead of bundle ID
• Rebuilding Android app
• Deleting developer account unnecessarily