Revert "Allow any iOS app to be added to an existing host app (#70647)" (#70739)

This reverts commit abdd65fc.

packages/flutter_tools/lib/src/commands/build_ios_framework.dart

@@ -113,7 +113,7 @@ class BuildIOSFrameworkCommand extends BuildSubCommand {
   final String name = 'ios-framework';
 
   @override
-  final String description = 'Produces .frameworks for a Flutter project '
+  final String description = 'Produces a .framework directory for a Flutter module '
       'and its plugins for integration into existing, plain Xcode projects.\n'
       'This can only be run on macOS hosts.';
 
@@ -144,6 +144,10 @@ class BuildIOSFrameworkCommand extends BuildSubCommand {
   Future<void> validateCommand() async {
     await super.validateCommand();
     _project = FlutterProject.current();
+    if (!_project.isModule) {
+      throwToolExit('Building frameworks for iOS is only supported from a module.');
+    }
+
     if (!_platform.isMacOS) {
       throwToolExit('Building frameworks for iOS is only supported on the Mac.');
     }
@@ -174,7 +178,7 @@ class BuildIOSFrameworkCommand extends BuildSubCommand {
     }
 
     if (!_project.ios.existsSync()) {
-      throwToolExit('Project does not support iOS');
+      throwToolExit('Module does not support iOS');
     }
 
     final Directory outputDirectory = globals.fs.directory(globals.fs.path.absolute(globals.fs.path.normalize(outputArgument)));
@@ -229,23 +233,6 @@ class BuildIOSFrameworkCommand extends BuildSubCommand {
     }
 
     globals.printStatus('Frameworks written to ${outputDirectory.path}.');
-
-    if (!_project.isModule && hasPlugins(_project)) {
-      // Apps do not generate a FlutterPluginRegistrant.framework. Users will need
-      // to copy the GeneratedPluginRegistrant class to their project manually.
-      final File pluginRegistrantHeader = _project.ios.pluginRegistrantHeader;
-      final File pluginRegistrantImplementation =
-          _project.ios.pluginRegistrantImplementation;
-      pluginRegistrantHeader.copySync(
-          outputDirectory.childFile(pluginRegistrantHeader.basename).path);
-      pluginRegistrantImplementation.copySync(outputDirectory
-          .childFile(pluginRegistrantImplementation.basename)
-          .path);
-      globals.printStatus(
-          '\nCopy the ${globals.fs.path.basenameWithoutExtension(pluginRegistrantHeader.path)} class into your project.\n'
-          'See https://flutter.dev/docs/development/add-to-app/ios/add-flutter-screen#create-a-flutterengine for more information.');
-    }
-
     return FlutterCommandResult.success();
   }
 
@@ -472,7 +459,6 @@ end
         xcodeBuildConfiguration,
         'SYMROOT=${iPhoneBuildOutput.path}',
         'BITCODE_GENERATION_MODE=$bitcodeGenerationMode',
-        'ENABLE_BITCODE=YES', // Support host apps with bitcode enabled.
         'ONLY_ACTIVE_ARCH=NO', // No device targeted, so build all valid architectures.
         'BUILD_LIBRARY_FOR_DISTRIBUTION=YES',
       ];
@@ -497,7 +483,6 @@ end
           '-configuration',
           xcodeBuildConfiguration,
           'SYMROOT=${simulatorBuildOutput.path}',
-          'ENABLE_BITCODE=YES', // Support host apps with bitcode enabled.
           'ARCHS=x86_64',
           'ONLY_ACTIVE_ARCH=NO', // No device targeted, so build all valid architectures.
           'BUILD_LIBRARY_FOR_DISTRIBUTION=YES',

packages/flutter_tools/lib/src/plugins.dart

@@ -897,24 +897,36 @@ Future<void> _writeIOSPluginRegistrant(FlutterProject project, List<Plugin> plug
     'framework': 'Flutter',
     'plugins': iosPlugins,
   };
+  final String registryDirectory = project.ios.pluginRegistrantHost.path;
   if (project.isModule) {
-    final String registryDirectory = project.ios.pluginRegistrantHost.path;
+    final String registryClassesDirectory = globals.fs.path.join(registryDirectory, 'Classes');
     _renderTemplateToFile(
       _pluginRegistrantPodspecTemplate,
       context,
       globals.fs.path.join(registryDirectory, 'FlutterPluginRegistrant.podspec'),
     );
+    _renderTemplateToFile(
+      _objcPluginRegistryHeaderTemplate,
+      context,
+      globals.fs.path.join(registryClassesDirectory, 'GeneratedPluginRegistrant.h'),
+    );
+    _renderTemplateToFile(
+      _objcPluginRegistryImplementationTemplate,
+      context,
+      globals.fs.path.join(registryClassesDirectory, 'GeneratedPluginRegistrant.m'),
+    );
+  } else {
+    _renderTemplateToFile(
+      _objcPluginRegistryHeaderTemplate,
+      context,
+      globals.fs.path.join(registryDirectory, 'GeneratedPluginRegistrant.h'),
+    );
+    _renderTemplateToFile(
+      _objcPluginRegistryImplementationTemplate,
+      context,
+      globals.fs.path.join(registryDirectory, 'GeneratedPluginRegistrant.m'),
+    );
   }
-  _renderTemplateToFile(
-    _objcPluginRegistryHeaderTemplate,
-    context,
-    project.ios.pluginRegistrantHeader.path,
-  );
-  _renderTemplateToFile(
-    _objcPluginRegistryImplementationTemplate,
-    context,
-    project.ios.pluginRegistrantImplementation.path,
-  );
 }
 
 /// The relative path from a project's main CMake file to the plugin symlink

packages/flutter_tools/lib/src/project.dart

@@ -665,12 +665,15 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
       )
     );
     if (framework.existsSync()) {
+      final Directory engineDest = ephemeralDirectory
+          .childDirectory('Flutter')
+          .childDirectory('engine');
       final File podspec = framework.parent.childFile('Flutter.podspec');
       globals.fsUtils.copyDirectorySync(
         framework,
-        engineCopyDirectory.childDirectory('Flutter.framework'),
+        engineDest.childDirectory('Flutter.framework'),
       );
-      podspec.copySync(engineCopyDirectory.childFile('Flutter.podspec').path);
+      podspec.copySync(engineDest.childFile('Flutter.podspec').path);
     }
   }
 
@@ -701,22 +704,6 @@ class IosProject extends FlutterProjectPlatform implements XcodeBasedProject {
         : hostAppRoot.childDirectory(_hostAppProjectName);
   }
 
-  File get pluginRegistrantHeader {
-    final Directory registryDirectory = isModule ? pluginRegistrantHost.childDirectory('Classes') : pluginRegistrantHost;
-    return registryDirectory.childFile('GeneratedPluginRegistrant.h');
-  }
-
-  File get pluginRegistrantImplementation {
-    final Directory registryDirectory = isModule ? pluginRegistrantHost.childDirectory('Classes') : pluginRegistrantHost;
-    return registryDirectory.childFile('GeneratedPluginRegistrant.m');
-  }
-
-  Directory get engineCopyDirectory {
-    return isModule
-        ? ephemeralDirectory.childDirectory('Flutter').childDirectory('engine')
-        : hostAppRoot.childDirectory('Flutter');
-  }
-
   Future<void> _overwriteFromTemplate(String path, Directory target) async {
     final Template template = await Template.fromName(
       path,