Support for flutter run/build module on iOS (#21216)

packages/flutter_tools/lib/src/android/apk.dart

@@ -19,7 +19,7 @@ Future<Null> buildApk({
   @required String target,
   BuildInfo buildInfo = BuildInfo.debug
 }) async {
-  if (!project.android.isUsingGradle()) {
+  if (!project.android.isUsingGradle) {
     throwToolExit(
         'The build process for Android has changed, and the current project configuration\n'
             'is no longer valid. Please consult\n\n'

packages/flutter_tools/lib/src/application_package.dart

@@ -17,7 +17,6 @@ import 'build_info.dart';
 import 'globals.dart';
 import 'ios/ios_workflow.dart';
 import 'ios/plist_utils.dart' as plist;
-import 'ios/xcodeproj.dart';
 import 'project.dart';
 import 'tester/flutter_tester.dart';
 
@@ -93,7 +92,7 @@ class AndroidApk extends ApplicationPackage {
   static Future<AndroidApk> fromAndroidProject(AndroidProject androidProject) async {
     File apkFile;
 
-    if (androidProject.isUsingGradle()) {
+    if (androidProject.isUsingGradle) {
       apkFile = await getGradleAppOut(androidProject);
       if (apkFile.existsSync()) {
         // Grab information from the .apk. The gradle build script might alter
@@ -217,26 +216,10 @@ abstract class IOSApp extends ApplicationPackage {
     );
   }
 
-  factory IOSApp.fromCurrentDirectory() {
+  factory IOSApp.fromIosProject(IosProject project) {
     if (getCurrentHostPlatform() != HostPlatform.darwin_x64)
       return null;
-
-    final String plistPath = fs.path.join('ios', 'Runner', 'Info.plist');
-    String id = iosWorkflow.getPlistValueFromFile(
-      plistPath,
-      plist.kCFBundleIdentifierKey,
-    );
-    if (id == null || !xcodeProjectInterpreter.isInstalled)
-      return null;
-    final String projectPath = fs.path.join('ios', 'Runner.xcodeproj');
-    final Map<String, String> buildSettings = xcodeProjectInterpreter.getBuildSettings(projectPath, 'Runner');
-    id = substituteXcodeVariables(id, buildSettings);
-
-    return new BuildableIOSApp(
-      appDirectory: 'ios',
-      projectBundleId: id,
-      buildSettings: buildSettings,
-    );
+    return new BuildableIOSApp(project);
   }
 
   @override
@@ -248,25 +231,12 @@ abstract class IOSApp extends ApplicationPackage {
 }
 
 class BuildableIOSApp extends IOSApp {
-  static const String kBundleName = 'Runner.app';
-
-  BuildableIOSApp({
-    this.appDirectory,
-    String projectBundleId,
-    this.buildSettings,
-  }) : super(projectBundleId: projectBundleId);
-
-  final String appDirectory;
+  BuildableIOSApp(this.project) : super(projectBundleId: project.productBundleIdentifier);
 
-  /// Build settings of the app's Xcode project.
-  ///
-  /// These are the build settings as specified in the Xcode project files.
-  ///
-  /// Build settings may change depending on the parameters passed while building.
-  final Map<String, String> buildSettings;
+  final IosProject project;
 
   @override
-  String get name => kBundleName;
+  String get name => project.hostAppBundleName;
 
   @override
   String get simulatorBundlePath => _buildAppPath('iphonesimulator');
@@ -274,11 +244,8 @@ class BuildableIOSApp extends IOSApp {
   @override
   String get deviceBundlePath => _buildAppPath('iphoneos');
 
-  /// True if the app is built from a Swift project. Null if unknown.
-  bool get isSwift => buildSettings?.containsKey('SWIFT_VERSION');
-
   String _buildAppPath(String type) {
-    return fs.path.join(getIosBuildDirectory(), type, kBundleName);
+    return fs.path.join(getIosBuildDirectory(), type, name);
   }
 }
 
@@ -317,7 +284,7 @@ Future<ApplicationPackage> getApplicationPackageForPlatform(
           : new AndroidApk.fromApk(applicationBinary);
     case TargetPlatform.ios:
       return applicationBinary == null
-          ? new IOSApp.fromCurrentDirectory()
+          ? new IOSApp.fromIosProject((await FlutterProject.current()).ios)
           : new IOSApp.fromPrebuiltApp(applicationBinary);
     case TargetPlatform.tester:
       return new FlutterTesterApp.fromCurrentDirectory();
@@ -346,7 +313,7 @@ class ApplicationPackageStore {
         android ??= await AndroidApk.fromAndroidProject((await FlutterProject.current()).android);
         return android;
       case TargetPlatform.ios:
-        iOS ??= new IOSApp.fromCurrentDirectory();
+        iOS ??= IOSApp.fromIosProject((await FlutterProject.current()).ios);
         return iOS;
       case TargetPlatform.darwin_x64:
       case TargetPlatform.linux_x64:

packages/flutter_tools/lib/src/base/file_system.dart

@@ -6,6 +6,7 @@ import 'package:file/file.dart';
 import 'package:file/local.dart';
 import 'package:file/memory.dart';
 import 'package:file/record_replay.dart';
+import 'package:meta/meta.dart';
 
 import 'common.dart' show throwToolExit;
 import 'context.dart';
@@ -145,3 +146,16 @@ String canonicalizePath(String path) => fs.path.normalize(fs.path.absolute(path)
 /// On Windows it replaces all '\' with '\\'. On other platforms, it returns the
 /// path unchanged.
 String escapePath(String path) => platform.isWindows ? path.replaceAll('\\', '\\\\') : path;
+
+/// Returns true if the file system [entity] has not been modified since the
+/// latest modification to [referenceFile].
+///
+/// Returns true, if [entity] does not exist.
+///
+/// Returns false, if [entity] exists, but [referenceFile] does not.
+bool isOlderThanReference({@required FileSystemEntity entity, @required File referenceFile}) {
+  if (!entity.existsSync())
+    return true;
+  return referenceFile.existsSync()
+      && referenceFile.lastModifiedSync().isAfter(entity.statSync().modified);
+}

packages/flutter_tools/lib/src/cache.dart

@@ -169,17 +169,11 @@ class Cache {
     return fs.file(fs.path.join(getRoot().path, '$artifactName.stamp'));
   }
 
-  /// Returns `true` if either [file] is older than the tools stamp or if
-  /// [file] doesn't exist.
-  bool fileOlderThanToolsStamp(File file) {
-    if (!file.existsSync()) {
-      return true;
-    }
+  /// Returns `true` if either [entity] is older than the tools stamp or if
+  /// [entity] doesn't exist.
+  bool isOlderThanToolsStamp(FileSystemEntity entity) {
     final File flutterToolsStamp = getStampFileFor('flutter_tools');
-    return flutterToolsStamp.existsSync() &&
-        flutterToolsStamp
-            .lastModifiedSync()
-            .isAfter(file.lastModifiedSync());
+    return isOlderThanReference(entity: entity, referenceFile: flutterToolsStamp);
   }
 
   bool isUpToDate() => _artifacts.every((CachedArtifact artifact) => artifact.isUpToDate());

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

@@ -133,7 +133,7 @@ class CreateCommand extends FlutterCommand {
     String organization = argResults['org'];
     if (!argResults.wasParsed('org')) {
       final FlutterProject project = await FlutterProject.fromDirectory(projectDir);
-      final Set<String> existingOrganizations = await project.organizationNames();
+      final Set<String> existingOrganizations = project.organizationNames;
       if (existingOrganizations.length == 1) {
         organization = existingOrganizations.first;
       } else if (1 < existingOrganizations.length) {

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

@@ -26,6 +26,7 @@ class InjectPluginsCommand extends FlutterCommand {
   @override
   Future<Null> runCommand() async {
     final FlutterProject project = await FlutterProject.current();
+    refreshPluginsList(project);
     await injectPlugins(project);
     final bool result = hasPlugins(project);
     if (result) {

packages/flutter_tools/lib/src/flutter_manifest.dart

@@ -140,6 +140,14 @@ class FlutterManifest {
     return null;
   }
 
+  /// Returns the iOS bundle identifier declared by this manifest in its
+  /// module descriptor. Returns null, if there is no such declaration.
+  String get iosBundleIdentifier {
+    if (isModule)
+      return _flutterDescriptor['module']['iosBundleIdentifier'];
+    return null;
+  }
+
   List<Map<String, dynamic>> get fontsDescriptor {
     final List<dynamic> fontList = _flutterDescriptor['fonts'];
     return fontList == null

packages/flutter_tools/lib/src/ios/code_signing.dart

@@ -96,20 +96,21 @@ Future<Map<String, String>> getCodeSigningIdentityDevelopmentTeam({
   BuildableIOSApp iosApp,
   bool usesTerminalUi = true
 }) async{
-  if (iosApp.buildSettings == null)
+  final Map<String, String> buildSettings = iosApp.project.buildSettings;
+  if (buildSettings == null)
     return null;
 
   // If the user already has it set in the project build settings itself,
   // continue with that.
-  if (isNotEmpty(iosApp.buildSettings['DEVELOPMENT_TEAM'])) {
+  if (isNotEmpty(buildSettings['DEVELOPMENT_TEAM'])) {
     printStatus(
       'Automatically signing iOS for device deployment using specified development '
-      'team in Xcode project: ${iosApp.buildSettings['DEVELOPMENT_TEAM']}'
+      'team in Xcode project: ${buildSettings['DEVELOPMENT_TEAM']}'
     );
     return null;
   }
 
-  if (isNotEmpty(iosApp.buildSettings['PROVISIONING_PROFILE']))
+  if (isNotEmpty(buildSettings['PROVISIONING_PROFILE']))
     return null;
 
   // If the user's environment is missing the tools needed to find and read

packages/flutter_tools/lib/src/ios/mac.dart

@@ -189,13 +189,13 @@ Future<XcodeBuildResult> buildXcodeProject({
   bool codesign = true,
   bool usesTerminalUi = true,
 }) async {
-  if (!await upgradePbxProjWithFlutterAssets(app.name, app.appDirectory))
+  if (!await upgradePbxProjWithFlutterAssets(app.project))
     return new XcodeBuildResult(success: false);
 
   if (!_checkXcodeVersion())
     return new XcodeBuildResult(success: false);
 
-  final XcodeProjectInfo projectInfo = xcodeProjectInterpreter.getInfo(app.appDirectory);
+  final XcodeProjectInfo projectInfo = xcodeProjectInterpreter.getInfo(app.project.directory.path);
   if (!projectInfo.targets.contains('Runner')) {
     printError('The Xcode project does not define target "Runner" which is needed by Flutter tooling.');
     printError('Open Xcode to fix the problem:');
@@ -230,8 +230,7 @@ Future<XcodeBuildResult> buildXcodeProject({
 
   // Before the build, all service definitions must be updated and the dylibs
   // copied over to a location that is suitable for Xcodebuild to find them.
-  final Directory appDirectory = fs.directory(app.appDirectory);
-  await _addServicesToBundle(appDirectory);
+  await _addServicesToBundle(app.project.directory);
 
   final FlutterProject project = await FlutterProject.current();
   await updateGeneratedXcodeProperties(
@@ -242,22 +241,21 @@ Future<XcodeBuildResult> buildXcodeProject({
   );
 
   if (hasPlugins(project)) {
-    final String iosPath = fs.path.join(fs.currentDirectory.path, app.appDirectory);
     // If the Xcode project, Podfile, or Generated.xcconfig have changed since
     // last run, pods should be updated.
     final Fingerprinter fingerprinter = new Fingerprinter(
       fingerprintPath: fs.path.join(getIosBuildDirectory(), 'pod_inputs.fingerprint'),
       paths: <String>[
-        _getPbxProjPath(app.appDirectory),
-        fs.path.join(iosPath, 'Podfile'),
-        fs.path.join(iosPath, 'Flutter', 'Generated.xcconfig'),
+        app.project.xcodeProjectInfoFile.path,
+        app.project.podfile.path,
+        app.project.generatedXcodePropertiesFile.path,
       ],
       properties: <String, String>{},
     );
     final bool didPodInstall = await cocoaPods.processPods(
       iosProject: project.ios,
       iosEngineDir: flutterFrameworkDir(buildInfo.mode),
-      isSwift: app.isSwift,
+      isSwift: project.ios.isSwift,
       dependenciesChanged: !await fingerprinter.doesFingerprintMatch()
     );
     if (didPodInstall)
@@ -288,7 +286,7 @@ Future<XcodeBuildResult> buildXcodeProject({
     buildCommands.add('-allowProvisioningDeviceRegistration');
   }
 
-  final List<FileSystemEntity> contents = fs.directory(app.appDirectory).listSync();
+  final List<FileSystemEntity> contents = app.project.directory.listSync();
   for (FileSystemEntity entity in contents) {
     if (fs.path.extension(entity.path) == '.xcworkspace') {
       buildCommands.addAll(<String>[
@@ -353,7 +351,7 @@ Future<XcodeBuildResult> buildXcodeProject({
   initialBuildStatus = logger.startProgress('Starting Xcode build...');
   final RunResult buildResult = await runAsync(
     buildCommands,
-    workingDirectory: app.appDirectory,
+    workingDirectory: app.project.directory.path,
     allowReentrantFlutter: true
   );
   buildSubStatus?.stop();
@@ -381,7 +379,7 @@ Future<XcodeBuildResult> buildXcodeProject({
             '-allowProvisioningDeviceRegistration',
           ].contains(buildCommand);
         }).toList(),
-    workingDirectory: app.appDirectory,
+    workingDirectory: app.project.directory.path,
   ));
 
   if (buildResult.exitCode != 0) {
@@ -400,7 +398,7 @@ Future<XcodeBuildResult> buildXcodeProject({
       stderr: buildResult.stderr,
       xcodeBuildExecution: new XcodeBuildExecution(
         buildCommands: buildCommands,
-        appDirectory: app.appDirectory,
+        appDirectory: app.project.directory.path,
         buildForPhysicalDevice: buildForDevice,
         buildSettings: buildSettings,
       ),
@@ -568,9 +566,6 @@ Future<Null> _copyServiceFrameworks(List<Map<String, String>> services, Director
   }
 }
 
-/// The path of the Xcode project file.
-String _getPbxProjPath(String appPath) => fs.path.join(fs.currentDirectory.path, appPath, 'Runner.xcodeproj', 'project.pbxproj');
-
 void _copyServiceDefinitionsManifest(List<Map<String, String>> services, File manifest) {
   printTrace("Creating service definitions manifest at '${manifest.path}'");
   final List<Map<String, String>> jsonServices = services.map((Map<String, String> service) => <String, String>{
@@ -583,8 +578,8 @@ void _copyServiceDefinitionsManifest(List<Map<String, String>> services, File ma
   manifest.writeAsStringSync(json.encode(jsonObject), mode: FileMode.write, flush: true);
 }
 
-Future<bool> upgradePbxProjWithFlutterAssets(String app, String appPath) async {
-  final File xcodeProjectFile = fs.file(_getPbxProjPath(appPath));
+Future<bool> upgradePbxProjWithFlutterAssets(IosProject project) async {
+  final File xcodeProjectFile = project.xcodeProjectInfoFile;
   assert(await xcodeProjectFile.exists());
   final List<String> lines = await xcodeProjectFile.readAsLines();
 
@@ -601,7 +596,7 @@ Future<bool> upgradePbxProjWithFlutterAssets(String app, String appPath) async {
   const String l8 = '				2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */,';
 
 
-  printStatus("Upgrading project.pbxproj of $app' to include the "
+  printStatus("Upgrading project.pbxproj of ${project.hostAppBundleName}' to include the "
               "'flutter_assets' directory");
 
   if (!lines.contains(l1) || !lines.contains(l3) ||

packages/flutter_tools/lib/src/plugins.dart

@@ -241,8 +241,7 @@ Future<void> _writeIOSPluginRegistrant(FlutterProject project, List<Plugin> plug
     'name': p.name,
     'prefix': p.iosPrefix,
     'class': p.pluginClass,
-  }).
-  toList();
+  }).toList();
   final Map<String, dynamic> context = <String, dynamic>{
     'plugins': iosPlugins,
   };
@@ -279,23 +278,34 @@ Future<void> _writeIOSPluginRegistrant(FlutterProject project, List<Plugin> plug
   }
 }
 
+/// Rewrites the `.flutter-plugins` file of [project] based on the plugin
+/// dependencies declared in `pubspec.yaml`.
+///
+/// Assumes `pub get` has been executed since last change to `pubspec.yaml`.
+void refreshPluginsList(FlutterProject project) {
+  final List<Plugin> plugins = findPlugins(project);
+  final bool changed = _writeFlutterPluginsList(project, plugins);
+  if (changed)
+    cocoaPods.invalidatePodInstallOutput(project.ios);
+}
+
 /// Injects plugins found in `pubspec.yaml` into the platform-specific projects.
+///
+/// Assumes [refreshPluginsList] has been called since last change to `pubspec.yaml`.
 Future<void> injectPlugins(FlutterProject project) async {
   final List<Plugin> plugins = findPlugins(project);
-  final bool changed = _writeFlutterPluginsList(project, plugins);
   await _writeAndroidPluginRegistrant(project, plugins);
   await _writeIOSPluginRegistrant(project, plugins);
-
-  if (project.ios.directory.existsSync()) {
+  if (!project.isModule && project.ios.directory.existsSync()) {
     final CocoaPods cocoaPods = new CocoaPods();
     if (plugins.isNotEmpty)
       cocoaPods.setupPodfile(project.ios);
-    if (changed)
-      cocoaPods.invalidatePodInstallOutput(project.ios);
   }
 }
 
 /// Returns whether the specified Flutter [project] has any plugin dependencies.
+///
+/// Assumes [refreshPluginsList] has been called since last change to `pubspec.yaml`.
 bool hasPlugins(FlutterProject project) {
   return _readFlutterPluginsList(project) != null;
 }

packages/flutter_tools/lib/src/project.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:convert';
 
 import 'package:meta/meta.dart';
 
@@ -64,17 +63,17 @@ class FlutterProject {
   /// The manifest of the example sub-project of this project.
   final FlutterManifest _exampleManifest;
 
-  /// Asynchronously returns the organization names found in this project as
+  /// The set of organization names found in this project as
   /// part of iOS product bundle identifier, Android application ID, or
   /// Gradle group ID.
-  Future<Set<String>> organizationNames() async {
-    final List<String> candidates = await Future.wait(<Future<String>>[
-      ios.productBundleIdentifier(),
-      android.applicationId(),
-      android.group(),
-      example.android.applicationId(),
-      example.ios.productBundleIdentifier(),
-    ]);
+  Set<String> get organizationNames {
+    final List<String> candidates = <String>[
+      ios.productBundleIdentifier,
+      android.applicationId,
+      android.group,
+      example.android.applicationId,
+      example.ios.productBundleIdentifier,
+    ];
     return new Set<String>.from(candidates
         .map(_organizationNameFromPackageName)
         .where((String name) => name != null));
@@ -93,6 +92,13 @@ class FlutterProject {
   /// The Android sub project of this project.
   AndroidProject get android => new AndroidProject._(this);
 
+  /// The `pubspec.yaml` file of this project.
+  File get pubspecFile => directory.childFile('pubspec.yaml');
+
+  /// The `.packages` file of this project.
+  File get packagesFile => directory.childFile('.packages');
+
+  /// The `.flutter-plugins` file of this project.
   File get flutterPluginsFile => directory.childFile('.flutter-plugins');
 
   /// The example sub-project of this project.
@@ -128,6 +134,7 @@ class FlutterProject {
   Future<void> ensureReadyForPlatformSpecificTooling() async {
     if (!directory.existsSync() || hasExampleApp)
       return;
+    refreshPluginsList(this);
     await android.ensureReadyForPlatformSpecificTooling();
     await ios.ensureReadyForPlatformSpecificTooling();
     await injectPlugins(this);
@@ -140,6 +147,7 @@ class FlutterProject {
 /// Flutter applications and the `.ios/` sub-folder of Flutter modules.
 class IosProject {
   static final RegExp _productBundleIdPattern = new RegExp(r'^\s*PRODUCT_BUNDLE_IDENTIFIER\s*=\s*(.*);\s*$');
+  static const String _hostAppBundleName = 'Runner';
 
   IosProject._(this.parent);
 
@@ -149,6 +157,8 @@ class IosProject {
   /// The directory of this project.
   Directory get directory => parent.directory.childDirectory(isModule ? '.ios' : 'ios');
 
+  String get hostAppBundleName => '$_hostAppBundleName.app';
+
   /// True, if the parent Flutter project is a module.
   bool get isModule => parent.isModule;
 
@@ -164,19 +174,30 @@ class IosProject {
   /// The 'Manifest.lock'.
   File get podManifestLock => directory.childDirectory('Pods').childFile('Manifest.lock');
 
-  Future<String> productBundleIdentifier() {
-    final File projectFile = directory.childDirectory('Runner.xcodeproj').childFile('project.pbxproj');
-    return _firstMatchInFile(projectFile, _productBundleIdPattern).then((Match match) => match?.group(1));
+  /// '.xcodeproj' folder of the host app.
+  Directory get xcodeProject => directory.childDirectory('$_hostAppBundleName.xcodeproj');
+
+  /// The '.pbxproj' file of the host app.
+  File get xcodeProjectInfoFile => xcodeProject.childFile('project.pbxproj');
+
+  /// The product bundle identifier of the host app.
+  String get productBundleIdentifier {
+    return _firstMatchInFile(xcodeProjectInfoFile, _productBundleIdPattern)?.group(1);
   }
 
-  Future<void> ensureReadyForPlatformSpecificTooling() async {
-    if (isModule && _shouldRegenerateFromTemplate()) {
-      final Template template = new Template.fromName(fs.path.join('module', 'ios'));
-      template.render(directory, <String, dynamic>{}, printStatusWhenWriting: false);
+  /// True, if the host app project is using Swift.
+  bool get isSwift => buildSettings?.containsKey('SWIFT_VERSION');
+
+  /// The build settings for the host app of this project, as a detached map.
+  Map<String, String> get buildSettings {
+    return xcode.xcodeProjectInterpreter.getBuildSettings(xcodeProject.path, _hostAppBundleName);
   }
+
+  Future<void> ensureReadyForPlatformSpecificTooling() async {
+    _regenerateFromTemplateIfNeeded();
     if (!directory.existsSync())
       return;
-    if (Cache.instance.fileOlderThanToolsStamp(generatedXcodePropertiesFile)) {
+    if (Cache.instance.isOlderThanToolsStamp(generatedXcodePropertiesFile)) {
       await xcode.updateGeneratedXcodeProperties(
         project: parent,
         buildInfo: BuildInfo.debug,
@@ -186,12 +207,23 @@ class IosProject {
     }
   }
 
-  Future<void> materialize() async {
-    throwToolExit('flutter materialize has not yet been implemented for iOS');
+  void _regenerateFromTemplateIfNeeded() {
+    if (!isModule)
+      return;
+    final bool pubspecChanged = isOlderThanReference(entity: directory, referenceFile: parent.pubspecFile);
+    final bool toolingChanged = Cache.instance.isOlderThanToolsStamp(directory);
+    if (!pubspecChanged && !toolingChanged)
+      return;
+    _deleteIfExistsSync(directory);
+    _overwriteFromTemplate(fs.path.join('module', 'ios', 'library'), directory);
+    _overwriteFromTemplate(fs.path.join('module', 'ios', 'host_app_ephemeral'), directory);
+    if (hasPlugins(parent)) {
+      _overwriteFromTemplate(fs.path.join('module', 'ios', 'host_app_ephemeral_cocoapods'), directory);
+    }
   }
 
-  bool _shouldRegenerateFromTemplate() {
-    return Cache.instance.fileOlderThanToolsStamp(directory.childFile('podhelper.rb'));
+  Future<void> materialize() async {
+    throwToolExit('flutter materialize has not yet been implemented for iOS');
   }
 
   File get generatedXcodePropertiesFile => directory.childDirectory('Flutter').childFile('Generated.xcconfig');
@@ -199,7 +231,20 @@ class IosProject {
   Directory get pluginRegistrantHost {
     return isModule
         ? directory.childDirectory('Flutter').childDirectory('FlutterPluginRegistrant')
-        : directory.childDirectory('Runner');
+        : directory.childDirectory(_hostAppBundleName);
+  }
+
+  void _overwriteFromTemplate(String path, Directory target) {
+    final Template template = new Template.fromName(path);
+    template.render(
+      target,
+      <String, dynamic>{
+        'projectName': parent.manifest.appName,
+        'iosIdentifier': parent.manifest.iosBundleIdentifier
+      },
+      printStatusWhenWriting: false,
+      overwriteExisting: true,
+    );
   }
 }
 
@@ -237,7 +282,7 @@ class AndroidProject {
   bool get isModule => parent.isModule;
 
   File get appManifestFile {
-    return isUsingGradle()
+    return isUsingGradle
         ? fs.file(fs.path.join(hostAppGradleRoot.path, 'app', 'src', 'main', 'AndroidManifest.xml'))
         : hostAppGradleRoot.childFile('AndroidManifest.xml');
   }
@@ -248,18 +293,18 @@ class AndroidProject {
     return fs.directory(fs.path.join(hostAppGradleRoot.path, 'app', 'build', 'outputs', 'apk'));
   }
 
-  bool isUsingGradle() {
+  bool get isUsingGradle {
     return hostAppGradleRoot.childFile('build.gradle').existsSync();
   }
 
-  Future<String> applicationId() {
+  String get applicationId {
     final File gradleFile = hostAppGradleRoot.childDirectory('app').childFile('build.gradle');
-    return _firstMatchInFile(gradleFile, _applicationIdPattern).then((Match match) => match?.group(1));
+    return _firstMatchInFile(gradleFile, _applicationIdPattern)?.group(1);
   }
 
-  Future<String> group() {
+  String get group {
     final File gradleFile = hostAppGradleRoot.childFile('build.gradle');
-    return _firstMatchInFile(gradleFile, _groupPattern).then((Match match) => match?.group(1));
+    return _firstMatchInFile(gradleFile, _groupPattern)?.group(1);
   }
 
   Future<void> ensureReadyForPlatformSpecificTooling() async {
@@ -278,7 +323,8 @@ class AndroidProject {
   }
 
   bool _shouldRegenerateFromTemplate() {
-    return Cache.instance.fileOlderThanToolsStamp(_ephemeralDirectory.childFile('build.gradle'));
+    return isOlderThanReference(entity: _ephemeralDirectory, referenceFile: parent.pubspecFile)
+        || Cache.instance.isOlderThanToolsStamp(_ephemeralDirectory);
   }
 
   Future<void> materialize() async {
@@ -305,11 +351,6 @@ class AndroidProject {
     gradle.injectGradleWrapper(_ephemeralDirectory);
   }
 
-  void _deleteIfExistsSync(Directory directory) {
-    if (directory.existsSync())
-      directory.deleteSync(recursive: true);
-  }
-
   void _overwriteFromTemplate(String path, Directory target) {
     final Template template = new Template.fromName(path);
     template.render(
@@ -324,17 +365,25 @@ class AndroidProject {
   }
 }
 
-/// Asynchronously returns the first line-based match for [regExp] in [file].
+/// Deletes [directory] with all content.
+void _deleteIfExistsSync(Directory directory) {
+  if (directory.existsSync())
+    directory.deleteSync(recursive: true);
+}
+
+
+/// Returns the first line-based match for [regExp] in [file].
 ///
 /// Assumes UTF8 encoding.
-Future<Match> _firstMatchInFile(File file, RegExp regExp) async {
-  if (!await file.exists()) {
+Match _firstMatchInFile(File file, RegExp regExp) {
+  if (!file.existsSync()) {
     return null;
   }
-  return file
-      .openRead()
-      .transform(utf8.decoder)
-      .transform(const LineSplitter())
-      .map(regExp.firstMatch)
-      .firstWhere((Match match) => match != null, orElse: () => null);
+  for (String line in file.readAsLinesSync()) {
+    final Match match = regExp.firstMatch(line);
+    if (match != null) {
+      return match;
+    }
+  }
+  return null;
 }

packages/flutter_tools/schema/pubspec_yaml.json

@@ -47,7 +47,8 @@
                     "type": "object",
                     "additionalProperties": false,
                     "properties": {
-                        "androidPackage": { "type": "string" }
+                        "androidPackage": { "type": "string" },
+                        "iosBundleIdentifier": { "type": "string" }
                     }
                 },
                 "plugin": {

packages/flutter_tools/templates/module/README.md

@@ -25,9 +25,7 @@ Flutter views.
 
 Written to `.android/` or `android/`.
 
-Mixin for adding Gradle boilerplate to Android projects. The `build.gradle`
-file is a template file so that it is created, not copied, on instantiation.
-That way, its timestamp reflects template instantiation time.
+Mixin for adding Gradle boilerplate to Android projects.
 
 #### host_app_common
 
@@ -59,9 +57,31 @@ under app author control) Android host app with a dependency on the
 
 ## ios
 
-Written to the `.ios/` hidden folder.
+#### library
+
+Written to the `.ios/Flutter` hidden folder.
 
-Contents wraps Flutter/Dart code as a CocoaPods pod.
+Contents wraps Flutter/Dart code for consumption by an Xcode project.
 
-iOS host apps can set up a dependency to this project to consume
+iOS host apps can set up a dependency to this contents to consume
 Flutter views.
+
+#### host_app_ephemeral
+
+Written to `.ios/` outside the `Flutter/` sub-folder.
+
+Combined contents define an *ephemeral* (hidden, auto-generated,
+under Flutter tooling control) iOS host app with a dependency on the
+`.ios/Flutter` folder contents.
+
+The host app does not make use of CocoaPods, and is therefore
+suitable only when the Flutter part declares no plugin dependencies.
+
+#### host_app_ephemeral_cocoapods
+
+Written to `.ios/` on top of `host_app_ephemeral`.
+ 
+Adds CocoaPods support.
+
+Combined contents define an ephemeral host app suitable for when the
+Flutter part declares plugin dependencies.

packages/flutter_tools/templates/module/common/pubspec.yaml.tmpl

@@ -17,3 +17,4 @@ flutter:
   uses-material-design: true
   module:
     androidPackage: {{androidIdentifier}}
+    iosBundleIdentifier: {{iosIdentifier}}

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Config.tmpl/Debug.xcconfig

+#include "Flutter.xcconfig"

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Config.tmpl/Flutter.xcconfig

+#include "../Flutter/Generated.xcconfig"
+ENABLE_BITCODE=NO

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Config.tmpl/Release.xcconfig

+#include "Flutter.xcconfig"
+FLUTTER_BUILD_MODE=release

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/AppDelegate.h

+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : FlutterAppDelegate
+
+@end

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/AppDelegate.m

+#include "AppDelegate.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
+
+@end

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/AppIcon.appiconset/Contents.json

+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/LaunchImage.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Assets.xcassets/LaunchImage.imageset/README.md

+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.
\ No newline at end of file

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Base.lproj/LaunchScreen.storyboard

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Base.lproj/Main.storyboard

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/Info.plist.tmpl

+<?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>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>{{projectName}}</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
+</dict>
+</plist>

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.tmpl/main.m

+#import <Flutter/Flutter.h>
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char* argv[]) {
+  @autoreleasepool {
+    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+  }
+}

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.xcodeproj.tmpl/project.xcworkspace/contents.xcworkspacedata

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.xcodeproj.tmpl/xcshareddata/xcschemes/Runner.xcscheme

+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0910"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

packages/flutter_tools/templates/module/ios/host_app_ephemeral/Runner.xcworkspace.tmpl/contents.xcworkspacedata

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

packages/flutter_tools/templates/module/ios/host_app_ephemeral_cocoapods/Config.tmpl/Debug.xcconfig

+#include "Flutter.xcconfig"
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"

packages/flutter_tools/templates/module/ios/host_app_ephemeral_cocoapods/Config.tmpl/Release.xcconfig

+#include "Flutter.xcconfig"
+#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+FLUTTER_BUILD_MODE=release

packages/flutter_tools/templates/module/ios/host_app_ephemeral_cocoapods/Podfile.copy.tmpl

+platform :ios, '8.0'
+
+target 'Runner' do
+  flutter_application_path = '../'
+  eval(File.read(File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')))
+end

packages/flutter_tools/templates/module/ios/host_app_ephemeral_cocoapods/Runner.tmpl/AppDelegate.m

+#include "AppDelegate.h"
+#import "FlutterPluginRegistrant/GeneratedPluginRegistrant.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  [GeneratedPluginRegistrant registerWithRegistry:self];
+  return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
+
+@end

packages/flutter_tools/templates/module/ios/Flutter.tmpl/podhelper.rb.copy.tmpl → packages/flutter_tools/templates/module/ios/library/Flutter.tmpl/podhelper.rb

-# This file should be used from the target section of the host-app's Podfile like this:
-# ```
-# target 'host' do
-#     flutter_application_path = /"(.*)\/.ios\/Flutter\/Generated.xcconfig"/.match(File.read("./Flutter/FlutterConfig.xcconfig"))[1]
-#     eval(File.read(File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')))
-# end
-# ```
-
 def parse_KV_file(file, separator='=')
     file_abs_path = File.expand_path(file)
     if !File.exists? file_abs_path

packages/flutter_tools/test/application_package_test.dart

@@ -41,17 +41,6 @@ void main() {
     });
   });
 
-  group('BuildableIOSApp', () {
-    testUsingContext('check isSwift', () {
-      final BuildableIOSApp buildableIOSApp = new BuildableIOSApp(
-        projectBundleId: 'blah',
-        appDirectory: 'not/important',
-        buildSettings: _swiftBuildSettings,
-      );
-      expect(buildableIOSApp.isSwift, true);
-    });
-  });
-
   group('PrebuiltIOSApp', () {
     final Map<Type, Generator> overrides = <Type, Generator>{
       FileSystem: () => new MemoryFileSystem(),
@@ -165,19 +154,6 @@ void main() {
   });
 }
 
-final Map<String, String> _swiftBuildSettings = <String, String>{
-  'ARCHS': 'arm64',
-  'ASSETCATALOG_COMPILER_APPICON_NAME': 'AppIcon',
-  'CLANG_ENABLE_MODULES': 'YES',
-  'ENABLE_BITCODE': 'NO',
-  'INFOPLIST_FILE': 'Runner/Info.plist',
-  'PRODUCT_BUNDLE_IDENTIFIER': 'com.example.test',
-  'PRODUCT_NAME': 'blah',
-  'SWIFT_OBJC_BRIDGING_HEADER': 'Runner/Runner-Bridging-Header.h',
-  'SWIFT_OPTIMIZATION_LEVEL': '-Onone',
-  'SWIFT_VERSION': '3.0',
-};
-
 const String _aaptDataWithExplicitEnabledActivity =
 '''N: android=http://schemas.android.com/apk/res/android
   E: manifest (line=7)

packages/flutter_tools/test/commands/create_test.dart

@@ -340,7 +340,7 @@ void main() {
       await _createProject(projectDir, <String>['--no-pub'], <String>[]);
       final FlutterProject project = await FlutterProject.fromDirectory(projectDir);
       expect(
-        await project.ios.productBundleIdentifier(),
+        project.ios.productBundleIdentifier,
         'com.bar.foo.flutterProject',
       );
     }, timeout: allowForCreateFlutterProject);
@@ -367,7 +367,7 @@ void main() {
       );
       final FlutterProject project = await FlutterProject.fromDirectory(projectDir);
       expect(
-        await project.example.ios.productBundleIdentifier(),
+        project.example.ios.productBundleIdentifier,
         'com.bar.foo.flutterProjectExample',
       );
     }, timeout: allowForCreateFlutterProject);

packages/flutter_tools/test/ios/code_signing_test.dart

@@ -4,6 +4,7 @@
 import 'dart:async';
 import 'dart:convert';
 
+import 'package:flutter_tools/src/project.dart';
 import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/application_package.dart';
 import 'package:flutter_tools/src/base/common.dart';
@@ -16,39 +17,37 @@ import 'package:process/process.dart';
 
 import '../src/common.dart';
 import '../src/context.dart';
+import '../src/mocks.dart';
 
 void main() {
   group('Auto signing', () {
     ProcessManager mockProcessManager;
     Config mockConfig;
+    IosProject mockIosProject;
     BuildableIOSApp app;
     AnsiTerminal testTerminal;
 
     setUp(() {
       mockProcessManager = new MockProcessManager();
       mockConfig = new MockConfig();
-      testTerminal = new TestTerminal();
-      app = new BuildableIOSApp(
-        projectBundleId: 'test.app',
-        buildSettings: <String, String>{
+      mockIosProject = new MockIosProject();
+      when(mockIosProject.buildSettings).thenReturn(<String, String>{
         'For our purposes': 'a non-empty build settings map is valid',
-        },
-      );
+      });
+      testTerminal = new TestTerminal();
+      app = new BuildableIOSApp(mockIosProject);
     });
 
     testUsingContext('No auto-sign if Xcode project settings are not available', () async {
-      app = new BuildableIOSApp(projectBundleId: 'test.app');
+      when(mockIosProject.buildSettings).thenReturn(null);
       final Map<String, String> signingConfigs = await getCodeSigningIdentityDevelopmentTeam(iosApp: app);
       expect(signingConfigs, isNull);
     });
 
     testUsingContext('No discovery if development team specified in Xcode project', () async {
-      app = new BuildableIOSApp(
-        projectBundleId: 'test.app',
-        buildSettings: <String, String>{
+      when(mockIosProject.buildSettings).thenReturn(<String, String>{
         'DEVELOPMENT_TEAM': 'abc',
-        },
-      );
+      });
       final Map<String, String> signingConfigs = await getCodeSigningIdentityDevelopmentTeam(iosApp: app);
       expect(signingConfigs, isNull);
       expect(testLogger.statusText, equals(

packages/flutter_tools/test/ios/devices_test.dart

@@ -17,6 +17,7 @@ import 'package:process/process.dart';
 
 import '../src/common.dart';
 import '../src/context.dart';
+import '../src/mocks.dart';
 
 class MockIMobileDevice extends Mock implements IMobileDevice {}
 class MockProcessManager extends Mock implements ProcessManager {}
@@ -91,9 +92,11 @@ f577a7903cc54959be2e34bc4f7f80b7009efcf4
   });
   group('logging', () {
     MockIMobileDevice mockIMobileDevice;
+    MockIosProject mockIosProject;
 
     setUp(() {
       mockIMobileDevice = new MockIMobileDevice();
+      mockIosProject = new MockIosProject();
     });
 
     testUsingContext('suppresses non-Flutter lines from output', () async {
@@ -117,7 +120,7 @@ f577a7903cc54959be2e34bc4f7f80b7009efcf4
 
       final IOSDevice device = new IOSDevice('123456');
       final DeviceLogReader logReader = device.getLogReader(
-        app: new BuildableIOSApp(projectBundleId: 'bundleId'),
+        app: new BuildableIOSApp(mockIosProject),
       );
 
       final List<String> lines = await logReader.logLines.toList();
@@ -147,7 +150,7 @@ f577a7903cc54959be2e34bc4f7f80b7009efcf4
 
       final IOSDevice device = new IOSDevice('123456');
       final DeviceLogReader logReader = device.getLogReader(
-        app: new BuildableIOSApp(projectBundleId: 'bundleId'),
+        app: new BuildableIOSApp(mockIosProject),
       );
 
       final List<String> lines = await logReader.logLines.toList();

packages/flutter_tools/test/ios/simulators_test.dart

@@ -13,6 +13,7 @@ import 'package:process/process.dart';
 
 import '../src/common.dart';
 import '../src/context.dart';
+import '../src/mocks.dart';
 
 class MockFile extends Mock implements File {}
 class MockIMobileDevice extends Mock implements IMobileDevice {}
@@ -291,9 +292,11 @@ void main() {
 
   group('log reader', () {
     MockProcessManager mockProcessManager;
+    MockIosProject mockIosProject;
 
     setUp(() {
       mockProcessManager = new MockProcessManager();
+      mockIosProject = new MockIosProject();
     });
 
     testUsingContext('simulator can output `)`', () async {
@@ -316,7 +319,7 @@ void main() {
 
       final IOSSimulator device = new IOSSimulator('123456', category: 'iOS 11.0');
       final DeviceLogReader logReader = device.getLogReader(
-        app: new BuildableIOSApp(projectBundleId: 'bundleId'),
+        app: new BuildableIOSApp(mockIosProject),
       );
 
       final List<String> lines = await logReader.logLines.toList();

packages/flutter_tools/test/project_test.dart

@@ -224,50 +224,50 @@ void main() {
     group('organization names set', () {
       testInMemory('is empty, if project not created', () async {
         final FlutterProject project = await someProject();
-        expect(await project.organizationNames(), isEmpty);
+        expect(project.organizationNames, isEmpty);
       });
       testInMemory('is empty, if no platform folders exist', () async {
         final FlutterProject project = await someProject();
         project.directory.createSync();
-        expect(await project.organizationNames(), isEmpty);
+        expect(project.organizationNames, isEmpty);
       });
       testInMemory('is populated from iOS bundle identifier', () async {
         final FlutterProject project = await someProject();
         addIosWithBundleId(project.directory, 'io.flutter.someProject');
-        expect(await project.organizationNames(), <String>['io.flutter']);
+        expect(project.organizationNames, <String>['io.flutter']);
       });
       testInMemory('is populated from Android application ID', () async {
         final FlutterProject project = await someProject();
         addAndroidWithApplicationId(project.directory, 'io.flutter.someproject');
-        expect(await project.organizationNames(), <String>['io.flutter']);
+        expect(project.organizationNames, <String>['io.flutter']);
       });
       testInMemory('is populated from iOS bundle identifier in plugin example', () async {
         final FlutterProject project = await someProject();
         addIosWithBundleId(project.example.directory, 'io.flutter.someProject');
-        expect(await project.organizationNames(), <String>['io.flutter']);
+        expect(project.organizationNames, <String>['io.flutter']);
       });
       testInMemory('is populated from Android application ID in plugin example', () async {
         final FlutterProject project = await someProject();
         addAndroidWithApplicationId(project.example.directory, 'io.flutter.someproject');
-        expect(await project.organizationNames(), <String>['io.flutter']);
+        expect(project.organizationNames, <String>['io.flutter']);
       });
       testInMemory('is populated from Android group in plugin', () async {
         final FlutterProject project = await someProject();
         addAndroidWithGroup(project.directory, 'io.flutter.someproject');
-        expect(await project.organizationNames(), <String>['io.flutter']);
+        expect(project.organizationNames, <String>['io.flutter']);
       });
       testInMemory('is singleton, if sources agree', () async {
         final FlutterProject project = await someProject();
         addIosWithBundleId(project.directory, 'io.flutter.someProject');
         addAndroidWithApplicationId(project.directory, 'io.flutter.someproject');
-        expect(await project.organizationNames(), <String>['io.flutter']);
+        expect(project.organizationNames, <String>['io.flutter']);
       });
       testInMemory('is non-singleton, if sources disagree', () async {
         final FlutterProject project = await someProject();
         addIosWithBundleId(project.directory, 'io.flutter.someProject');
         addAndroidWithApplicationId(project.directory, 'io.clutter.someproject');
         expect(
-          await project.organizationNames(),
+          project.organizationNames,
           <String>['io.flutter', 'io.clutter'],
         );
       });

packages/flutter_tools/test/src/mocks.dart

@@ -16,6 +16,7 @@ import 'package:flutter_tools/src/devfs.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/ios/devices.dart';
 import 'package:flutter_tools/src/ios/simulators.dart';
+import 'package:flutter_tools/src/project.dart';
 import 'package:flutter_tools/src/runner/flutter_command.dart';
 import 'package:mockito/mockito.dart';
 import 'package:process/process.dart';
@@ -29,10 +30,7 @@ class MockApplicationPackageStore extends ApplicationPackageStore {
       file: fs.file('/mock/path/to/android/SkyShell.apk'),
       launchActivity: 'io.flutter.android.mock.MockActivity'
     ),
-    iOS: new BuildableIOSApp(
-      appDirectory: '/mock/path/to/iOS/SkyShell.app',
-      projectBundleId: 'io.flutter.ios.mock'
-    )
+    iOS: new BuildableIOSApp(new MockIosProject())
   );
 }
 
@@ -335,6 +333,14 @@ class MockPollingDeviceDiscovery extends PollingDeviceDiscovery {
   Stream<Device> get onRemoved => _onRemovedController.stream;
 }
 
+class MockIosProject extends Mock implements IosProject {
+  @override
+  String get productBundleIdentifier => 'com.example.test';
+
+  @override
+  String get hostAppBundleName => 'Runner.app';
+}
+
 class MockAndroidDevice extends Mock implements AndroidDevice {
   @override
   Future<TargetPlatform> get targetPlatform async => TargetPlatform.android_arm;