Flutter Code Signing Guide - iOS & Android | FlightStack

Setting Up Code Signing

iOS Code Signing

Certificates

1. Generate a distribution certificate in Apple Developer portal
2. Download and install in Keychain Access
3. Export as .p12 file with password

Provisioning Profiles

1. Create App Store distribution profile
2. Download and install
3. Reference in ExportOptions.plist

ExportOptions.plist

Create ios/ExportOptions.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>method</key>
    <string>app-store</string>
    <key>teamID</key>
    <string>YOUR_TEAM_ID</string>
</dict>
</plist>

Android Signing

Create Keystore

keytool -genkey -v -keystore upload-keystore.jks \
  -keyalg RSA -keysize 2048 -validity 10000 \
  -alias upload

Configure Gradle

Create android/key.properties:

storeFile=../upload-keystore.jks
storePassword=your-password
keyAlias=upload
keyPassword=your-password

Update android/app/build.gradle to use the keystore.