31.21 Flutter App and Package Name

20230703

The app and package name is recorded at the top of the pubspec.yaml file:

name: healthtracks
description: Privacy focused location based health data app using SOLID.

Individual dart source files can then refer to package:healthtracks to import from, as a preference over relative paths like ../../pages/.

import 'package:healthtracks/pages/home/index.dart';

To change the name of the package, we can edit the name in pubspec.yaml and run something like the following.

rgrep healthtracks lib
find lib -type f -exec sed -i 's/package:healthtracks/package:myhealth/g' {} +

The app name will also have been instantiated within the build, macos, ios, web, linux, windows, and android directories. So to change the name throughout is more complex.

Individual files can be modified for Android android/app/src/main/AndroidManifest.xml and for iOS ios/Runner/Info.plist or we can use the flutter_app_name package to make that change by adding the following to pubspec.yaml:

dev_dependencies:
  flutter_app_name: ^0.1.1

flutter_app_name:
  name: "Health Tracks"
  id: "com.togaware.healthtrack"

and then:

flutter pub get
flutter pub run flutter_app_name

For Linux we can find where the old title is used and change them manually:

rgrep healthtracks linux

to see

linux/my_application.cc:    gtk_header_bar_set_title(header_bar, "healthtracks");
linux/my_application.cc:    gtk_window_set_title(window, "healthtracks");
linux/CMakeLists.txt:set(BINARY_NAME "healthtracks")
linux/CMakeLists.txt:set(APPLICATION_ID "com.example.healthtracks")

To change the name:

 find linux -type f -exec sed -i 's|healthtracks|myhealth|' {} +

The default package is also “owned” by com.example. We need to change this to com.mydomain to publish the app:

android/app/build.gradle

        applicationId "com.example.myapp"
  
                'appAuthRedirectScheme': 'com.example.myapp'

linux/CMakeLists.txt

set(APPLICATION_ID "com.example.myapp")

windows/runner/Runner.rc

            VALUE "CompanyName", "com.example" "\0"
            VALUE "LegalCopyright", "Copyright (C) 2023 com.example. All rights reserved." "\0"

macos/Runner.xcodeproj/project.pbxproj

                         PRODUCT_BUNDLE_IDENTIFIER = com.example.indi.RunnerTests;
                         PRODUCT_BUNDLE_IDENTIFIER = com.example.indi.RunnerTests;
                         PRODUCT_BUNDLE_IDENTIFIER = com.example.indi.RunnerTests;

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