packages/flutter_tools/lib/src/application_package.dart - mirrors/flutter - Git at Google

 // Copyright 2014 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 import 'dart:collection';

 import 'package:meta/meta.dart';
 import 'package:xml/xml.dart';

 import 'android/gradle.dart';
 import 'base/common.dart';
 import 'base/context.dart';
 import 'base/file_system.dart';
 import 'base/io.dart';
 import 'base/process.dart';
 import 'base/user_messages.dart';
 import 'build_info.dart';
 import 'fuchsia/application_package.dart';
 import 'globals.dart' as globals;
 import 'ios/plist_parser.dart';
 import 'linux/application_package.dart';
 import 'macos/application_package.dart';
 import 'project.dart';
 import 'tester/flutter_tester.dart';
 import 'web/web_device.dart';
 import 'windows/application_package.dart';

 class ApplicationPackageFactory {
   static ApplicationPackageFactory get instance => context.get<ApplicationPackageFactory>();

   Future<ApplicationPackage> getPackageForPlatform(
     TargetPlatform platform, {
     BuildInfo buildInfo,
     File applicationBinary,
   }) async {
     switch (platform) {
       case TargetPlatform.android:
       case TargetPlatform.android_arm:
       case TargetPlatform.android_arm64:
       case TargetPlatform.android_x64:
       case TargetPlatform.android_x86:
         if (globals.androidSdk?.licensesAvailable == true  && globals.androidSdk?.latestVersion == null) {
           await checkGradleDependencies();
         }
         return applicationBinary == null
             ? await AndroidApk.fromAndroidProject(FlutterProject.current().android)
             : AndroidApk.fromApk(applicationBinary);
       case TargetPlatform.ios:
         return applicationBinary == null
             ? await IOSApp.fromIosProject(FlutterProject.current().ios, buildInfo)
             : IOSApp.fromPrebuiltApp(applicationBinary);
       case TargetPlatform.tester:
         return FlutterTesterApp.fromCurrentDirectory(globals.fs);
       case TargetPlatform.darwin_x64:
         return applicationBinary == null
             ? MacOSApp.fromMacOSProject(FlutterProject.current().macos)
             : MacOSApp.fromPrebuiltApp(applicationBinary);
       case TargetPlatform.web_javascript:
         if (!FlutterProject.current().web.existsSync()) {
           return null;
         }
         return WebApplicationPackage(FlutterProject.current());
       case TargetPlatform.linux_x64:
         return applicationBinary == null
             ? LinuxApp.fromLinuxProject(FlutterProject.current().linux)
             : LinuxApp.fromPrebuiltApp(applicationBinary);
       case TargetPlatform.windows_x64:
         return applicationBinary == null
             ? WindowsApp.fromWindowsProject(FlutterProject.current().windows)
             : WindowsApp.fromPrebuiltApp(applicationBinary);
       case TargetPlatform.fuchsia_arm64:
       case TargetPlatform.fuchsia_x64:
         return applicationBinary == null
             ? FuchsiaApp.fromFuchsiaProject(FlutterProject.current().fuchsia)
             : FuchsiaApp.fromPrebuiltApp(applicationBinary);
     }
     assert(platform != null);
     return null;
   }
 }

 abstract class ApplicationPackage {
   ApplicationPackage({ @required this.id })
     : assert(id != null);

   /// Package ID from the Android Manifest or equivalent.
   final String id;

   String get name;

   String get displayName => name;

   File get packagesFile => null;

   @override
   String toString() => displayName ?? id;
 }

 class AndroidApk extends ApplicationPackage {
   AndroidApk({
     String id,
     @required this.file,
     @required this.versionCode,
     @required this.launchActivity,
   }) : assert(file != null),
        assert(launchActivity != null),
        super(id: id);

   /// Creates a new AndroidApk from an existing APK.
   factory AndroidApk.fromApk(File apk) {
     final String aaptPath = globals.androidSdk?.latestVersion?.aaptPath;
     if (aaptPath == null) {
       globals.printError(userMessages.aaptNotFound);
       return null;
     }

     String apptStdout;
     try {
       apptStdout = processUtils.runSync(
         <String>[
           aaptPath,
           'dump',
           'xmltree',
           apk.path,
           'AndroidManifest.xml',
         ],
         throwOnError: true,
       ).stdout.trim();
     } on ProcessException catch (error) {
       globals.printError('Failed to extract manifest from APK: $error.');
       return null;
     }

     final ApkManifestData data = ApkManifestData.parseFromXmlDump(apptStdout);

     if (data == null) {
       globals.printError('Unable to read manifest info from ${apk.path}.');
       return null;
     }

     if (data.packageName == null || data.launchableActivityName == null) {
       globals.printError('Unable to read manifest info from ${apk.path}.');
       return null;
     }

     return AndroidApk(
       id: data.packageName,
       file: apk,
       versionCode: int.tryParse(data.versionCode),
       launchActivity: '${data.packageName}/${data.launchableActivityName}',
     );
   }

   /// Path to the actual apk file.
   final File file;

   /// The path to the activity that should be launched.
   final String launchActivity;

   /// The version code of the APK.
   final int versionCode;

   /// Creates a new AndroidApk based on the information in the Android manifest.
   static Future<AndroidApk> fromAndroidProject(AndroidProject androidProject) async {
     File apkFile;

     if (androidProject.isUsingGradle) {
       apkFile = await getGradleAppOut(androidProject);
       if (apkFile.existsSync()) {
         // Grab information from the .apk. The gradle build script might alter
         // the application Id, so we need to look at what was actually built.
         return AndroidApk.fromApk(apkFile);
       }
       // The .apk hasn't been built yet, so we work with what we have. The run
       // command will grab a new AndroidApk after building, to get the updated
       // IDs.
     } else {
       apkFile = globals.fs.file(globals.fs.path.join(getAndroidBuildDirectory(), 'app.apk'));
     }

     final File manifest = androidProject.appManifestFile;

     if (!manifest.existsSync()) {
       globals.printError('AndroidManifest.xml could not be found.');
       globals.printError('Please check ${manifest.path} for errors.');
       return null;
     }

     final String manifestString = manifest.readAsStringSync();
     XmlDocument document;
     try {
       document = XmlDocument.parse(manifestString);
     } on XmlParserException catch (exception) {
       String manifestLocation;
       if (androidProject.isUsingGradle) {
         manifestLocation = globals.fs.path.join(androidProject.hostAppGradleRoot.path, 'app', 'src', 'main', 'AndroidManifest.xml');
       } else {
         manifestLocation = globals.fs.path.join(androidProject.hostAppGradleRoot.path, 'AndroidManifest.xml');
       }
       globals.printError('AndroidManifest.xml is not a valid XML document.');
       globals.printError('Please check $manifestLocation for errors.');
       throwToolExit('XML Parser error message: ${exception.toString()}');
     }

     final Iterable<XmlElement> manifests = document.findElements('manifest');
     if (manifests.isEmpty) {
       globals.printError('AndroidManifest.xml has no manifest element.');
       globals.printError('Please check ${manifest.path} for errors.');
       return null;
     }
     final String packageId = manifests.first.getAttribute('package');

     String launchActivity;
     for (final XmlElement activity in document.findAllElements('activity')) {
       final String enabled = activity.getAttribute('android:enabled');
       if (enabled != null && enabled == 'false') {
         continue;
       }

       for (final XmlElement element in activity.findElements('intent-filter')) {
         String actionName = '';
         String categoryName = '';
         for (final XmlNode node in element.children) {
           if (node is! XmlElement) {
             continue;
           }
           final XmlElement xmlElement = node as XmlElement;
           final String name = xmlElement.getAttribute('android:name');
           if (name == 'android.intent.action.MAIN') {
             actionName = name;
           } else if (name == 'android.intent.category.LAUNCHER') {
             categoryName = name;
           }
         }
         if (actionName.isNotEmpty && categoryName.isNotEmpty) {
           final String activityName = activity.getAttribute('android:name');
           launchActivity = '$packageId/$activityName';
           break;
         }
       }
     }

     if (packageId == null || launchActivity == null) {
       globals.printError('package identifier or launch activity not found.');
       globals.printError('Please check ${manifest.path} for errors.');
       return null;
     }

     return AndroidApk(
       id: packageId,
       file: apkFile,
       versionCode: null,
       launchActivity: launchActivity,
     );
   }

   @override
   File get packagesFile => file;

   @override
   String get name => file.basename;
 }

 /// Tests whether a [Directory] is an iOS bundle directory.
 bool _isBundleDirectory(Directory dir) => dir.path.endsWith('.app');

 abstract class IOSApp extends ApplicationPackage {
   IOSApp({@required String projectBundleId}) : super(id: projectBundleId);

   /// Creates a new IOSApp from an existing app bundle or IPA.
   factory IOSApp.fromPrebuiltApp(FileSystemEntity applicationBinary) {
     final FileSystemEntityType entityType = globals.fs.typeSync(applicationBinary.path);
     if (entityType == FileSystemEntityType.notFound) {
       globals.printError(
           'File "${applicationBinary.path}" does not exist. Use an app bundle or an ipa.');
       return null;
     }
     Directory bundleDir;
     if (entityType == FileSystemEntityType.directory) {
       final Directory directory = globals.fs.directory(applicationBinary);
       if (!_isBundleDirectory(directory)) {
         globals.printError('Folder "${applicationBinary.path}" is not an app bundle.');
         return null;
       }
       bundleDir = globals.fs.directory(applicationBinary);
     } else {
       // Try to unpack as an ipa.
       final Directory tempDir = globals.fs.systemTempDirectory.createTempSync('flutter_app.');
       shutdownHooks.addShutdownHook(() async {
         await tempDir.delete(recursive: true);
       }, ShutdownStage.STILL_RECORDING);
       globals.os.unzip(globals.fs.file(applicationBinary), tempDir);
       final Directory payloadDir = globals.fs.directory(
         globals.fs.path.join(tempDir.path, 'Payload'),
       );
       if (!payloadDir.existsSync()) {
         globals.printError(
             'Invalid prebuilt iOS ipa. Does not contain a "Payload" directory.');
         return null;
       }
       try {
         bundleDir = payloadDir.listSync().whereType<Directory>().singleWhere(_isBundleDirectory);
       } on StateError {
         globals.printError(
             'Invalid prebuilt iOS ipa. Does not contain a single app bundle.');
         return null;
       }
     }
     final String plistPath = globals.fs.path.join(bundleDir.path, 'Info.plist');
     if (!globals.fs.file(plistPath).existsSync()) {
       globals.printError('Invalid prebuilt iOS app. Does not contain Info.plist.');
       return null;
     }
     final String id = globals.plistParser.getValueFromFile(
       plistPath,
       PlistParser.kCFBundleIdentifierKey,
     );
     if (id == null) {
       globals.printError('Invalid prebuilt iOS app. Info.plist does not contain bundle identifier');
       return null;
     }

     return PrebuiltIOSApp(
       bundleDir: bundleDir,
       bundleName: globals.fs.path.basename(bundleDir.path),
       projectBundleId: id,
     );
   }

   static Future<IOSApp> fromIosProject(IosProject project, BuildInfo buildInfo) {
     if (getCurrentHostPlatform() != HostPlatform.darwin_x64) {
       return null;
     }
     if (!project.exists) {
       // If the project doesn't exist at all the current hint to run flutter
       // create is accurate.
       return null;
     }
     if (!project.xcodeProject.existsSync()) {
       globals.printError('Expected ios/Runner.xcodeproj but this file is missing.');
       return null;
     }
     if (!project.xcodeProjectInfoFile.existsSync()) {
       globals.printError('Expected ios/Runner.xcodeproj/project.pbxproj but this file is missing.');
       return null;
     }
     return BuildableIOSApp.fromProject(project, buildInfo);
   }

   @override
   String get displayName => id;

   String get simulatorBundlePath;

   String get deviceBundlePath;
 }

 class BuildableIOSApp extends IOSApp {
   BuildableIOSApp(this.project, String projectBundleId, String hostAppBundleName)
     : _hostAppBundleName = hostAppBundleName,
       super(projectBundleId: projectBundleId);

   static Future<BuildableIOSApp> fromProject(IosProject project, BuildInfo buildInfo) async {
     final String projectBundleId = await project.productBundleIdentifier(buildInfo);
     final String hostAppBundleName = await project.hostAppBundleName(buildInfo);
     return BuildableIOSApp(project, projectBundleId, hostAppBundleName);
   }

   final IosProject project;

   final String _hostAppBundleName;

   @override
   String get name => _hostAppBundleName;

   @override
   String get simulatorBundlePath => _buildAppPath('iphonesimulator');

   @override
   String get deviceBundlePath => _buildAppPath('iphoneos');

   String _buildAppPath(String type) {
     return globals.fs.path.join(getIosBuildDirectory(), type, _hostAppBundleName);
   }
 }

 class PrebuiltIOSApp extends IOSApp {
   PrebuiltIOSApp({
     this.bundleDir,
     this.bundleName,
     @required String projectBundleId,
   }) : super(projectBundleId: projectBundleId);

   final Directory bundleDir;
   final String bundleName;

   @override
   String get name => bundleName;

   @override
   String get simulatorBundlePath => _bundlePath;

   @override
   String get deviceBundlePath => _bundlePath;

   String get _bundlePath => bundleDir.path;
 }

 class ApplicationPackageStore {
   ApplicationPackageStore({ this.android, this.iOS, this.fuchsia });

   AndroidApk android;
   IOSApp iOS;
   FuchsiaApp fuchsia;
   LinuxApp linux;
   MacOSApp macOS;
   WindowsApp windows;

   Future<ApplicationPackage> getPackageForPlatform(
     TargetPlatform platform,
     BuildInfo buildInfo,
   ) async {
     switch (platform) {
       case TargetPlatform.android:
       case TargetPlatform.android_arm:
       case TargetPlatform.android_arm64:
       case TargetPlatform.android_x64:
       case TargetPlatform.android_x86:
         android ??= await AndroidApk.fromAndroidProject(FlutterProject.current().android);
         return android;
       case TargetPlatform.ios:
         iOS ??= await IOSApp.fromIosProject(FlutterProject.current().ios, buildInfo);
         return iOS;
       case TargetPlatform.fuchsia_arm64:
       case TargetPlatform.fuchsia_x64:
         fuchsia ??= FuchsiaApp.fromFuchsiaProject(FlutterProject.current().fuchsia);
         return fuchsia;
       case TargetPlatform.darwin_x64:
         macOS ??= MacOSApp.fromMacOSProject(FlutterProject.current().macos);
         return macOS;
       case TargetPlatform.linux_x64:
         linux ??= LinuxApp.fromLinuxProject(FlutterProject.current().linux);
         return linux;
       case TargetPlatform.windows_x64:
         windows ??= WindowsApp.fromWindowsProject(FlutterProject.current().windows);
         return windows;
       case TargetPlatform.tester:
       case TargetPlatform.web_javascript:
         return null;
     }
     return null;
   }
 }

 class _Entry {
   _Element parent;
   int level;
 }

 class _Element extends _Entry {
   _Element.fromLine(String line, _Element parent) {
     //      E: application (line=29)
     final List<String> parts = line.trimLeft().split(' ');
     name = parts[1];
     level = line.length - line.trimLeft().length;
     this.parent = parent;
     children = <_Entry>[];
   }

   List<_Entry> children;
   String name;

   void addChild(_Entry child) {
     children.add(child);
   }

   _Attribute firstAttribute(String name) {
     return children.whereType<_Attribute>().firstWhere(
         (_Attribute e) => e.key.startsWith(name),
         orElse: () => null,
     );
   }

   _Element firstElement(String name) {
     return children.whereType<_Element>().firstWhere(
         (_Element e) => e.name.startsWith(name),
         orElse: () => null,
     );
   }

   Iterable<_Element> allElements(String name) {
     return children.whereType<_Element>().where((_Element e) => e.name.startsWith(name));
   }
 }

 class _Attribute extends _Entry {
   _Attribute.fromLine(String line, _Element parent) {
     //     A: android:label(0x01010001)="hello_world" (Raw: "hello_world")
     const String attributePrefix = 'A: ';
     final List<String> keyVal = line
         .substring(line.indexOf(attributePrefix) + attributePrefix.length)
         .split('=');
     key = keyVal[0];
     value = keyVal[1];
     level = line.length - line.trimLeft().length;
     this.parent = parent;
   }

   String key;
   String value;
 }

 class ApkManifestData {
   ApkManifestData._(this._data);

   static bool isAttributeWithValuePresent(_Element baseElement,
       String childElement, String attributeName, String attributeValue) {
     final Iterable<_Element> allElements = baseElement.allElements(childElement);
     for (final _Element oneElement in allElements) {
       final String elementAttributeValue = oneElement
           ?.firstAttribute(attributeName)
           ?.value;
       if (elementAttributeValue != null &&
           elementAttributeValue.startsWith(attributeValue)) {
         return true;
       }
     }
     return false;
   }

   static ApkManifestData parseFromXmlDump(String data) {
     if (data == null || data.trim().isEmpty) {
       return null;
     }

     final List<String> lines = data.split('\n');
     assert(lines.length > 3);

     final int manifestLine = lines.indexWhere((String line) => line.contains('E: manifest'));
     final _Element manifest = _Element.fromLine(lines[manifestLine], null);
     _Element currentElement = manifest;

     for (final String line in lines.skip(manifestLine)) {
       final String trimLine = line.trimLeft();
       final int level = line.length - trimLine.length;

       // Handle level out
       while (currentElement.parent != null && level <= currentElement.level) {
         currentElement = currentElement.parent;
       }

       if (level > currentElement.level) {
         switch (trimLine[0]) {
           case 'A':
             currentElement
                 .addChild(_Attribute.fromLine(line, currentElement));
             break;
           case 'E':
             final _Element element = _Element.fromLine(line, currentElement);
             currentElement.addChild(element);
             currentElement = element;
         }
       }
     }

     final _Element application = manifest.firstElement('application');
     if (application == null) {
       return null;
     }

     final Iterable<_Element> activities = application.allElements('activity');

     _Element launchActivity;
     for (final _Element activity in activities) {
       final _Attribute enabled = activity.firstAttribute('android:enabled');
       final Iterable<_Element> intentFilters = activity.allElements('intent-filter');
       final bool isEnabledByDefault = enabled == null;
       final bool isExplicitlyEnabled = enabled != null && enabled.value.contains('0xffffffff');
       if (!(isEnabledByDefault || isExplicitlyEnabled)) {
         continue;
       }

       for (final _Element element in intentFilters) {
         final bool isMainAction = isAttributeWithValuePresent(
             element, 'action', 'android:name', '"android.intent.action.MAIN"');
         if (!isMainAction) {
           continue;
         }
         final bool isLauncherCategory = isAttributeWithValuePresent(
             element, 'category', 'android:name',
             '"android.intent.category.LAUNCHER"');
         if (!isLauncherCategory) {
           continue;
         }
         launchActivity = activity;
         break;
       }
       if (launchActivity != null) {
         break;
       }
     }

     final _Attribute package = manifest.firstAttribute('package');
     // "io.flutter.examples.hello_world" (Raw: "io.flutter.examples.hello_world")
     final String packageName = package.value.substring(1, package.value.indexOf('" '));

     if (launchActivity == null) {
       globals.printError('Error running $packageName. Default activity not found');
       return null;
     }

     final _Attribute nameAttribute = launchActivity.firstAttribute('android:name');
     // "io.flutter.examples.hello_world.MainActivity" (Raw: "io.flutter.examples.hello_world.MainActivity")
     final String activityName = nameAttribute
         .value.substring(1, nameAttribute.value.indexOf('" '));

     // Example format: (type 0x10)0x1
     final _Attribute versionCodeAttr = manifest.firstAttribute('android:versionCode');
     if (versionCodeAttr == null) {
       globals.printError('Error running $packageName. Manifest versionCode not found');
       return null;
     }
     if (!versionCodeAttr.value.startsWith('(type 0x10)')) {
       globals.printError('Error running $packageName. Manifest versionCode invalid');
       return null;
     }
     final int versionCode = int.tryParse(versionCodeAttr.value.substring(11));
     if (versionCode == null) {
       globals.printError('Error running $packageName. Manifest versionCode invalid');
       return null;
     }

     final Map<String, Map<String, String>> map = <String, Map<String, String>>{};
     map['package'] = <String, String>{'name': packageName};
     map['version-code'] = <String, String>{'name': versionCode.toString()};
     map['launchable-activity'] = <String, String>{'name': activityName};

     return ApkManifestData._(map);
   }

   final Map<String, Map<String, String>> _data;

   @visibleForTesting
   Map<String, Map<String, String>> get data =>
       UnmodifiableMapView<String, Map<String, String>>(_data);

   String get packageName => _data['package'] == null ? null : _data['package']['name'];

   String get versionCode => _data['version-code'] == null ? null : _data['version-code']['name'];

   String get launchableActivityName {
     return _data['launchable-activity'] == null ? null : _data['launchable-activity']['name'];
   }

   @override
   String toString() => _data.toString();
 }
	// Copyright 2014 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import 'dart:collection';

	import 'package:meta/meta.dart';
	import 'package:xml/xml.dart';

	import 'android/gradle.dart';
	import 'base/common.dart';
	import 'base/context.dart';
	import 'base/file_system.dart';
	import 'base/io.dart';
	import 'base/process.dart';
	import 'base/user_messages.dart';
	import 'build_info.dart';
	import 'fuchsia/application_package.dart';
	import 'globals.dart' as globals;
	import 'ios/plist_parser.dart';
	import 'linux/application_package.dart';
	import 'macos/application_package.dart';
	import 'project.dart';
	import 'tester/flutter_tester.dart';
	import 'web/web_device.dart';
	import 'windows/application_package.dart';

	class ApplicationPackageFactory {
	static ApplicationPackageFactory get instance => context.get<ApplicationPackageFactory>();

	Future<ApplicationPackage> getPackageForPlatform(
	TargetPlatform platform, {
	BuildInfo buildInfo,
	File applicationBinary,
	}) async {
	switch (platform) {
	case TargetPlatform.android:
	case TargetPlatform.android_arm:
	case TargetPlatform.android_arm64:
	case TargetPlatform.android_x64:
	case TargetPlatform.android_x86:
	if (globals.androidSdk?.licensesAvailable == true && globals.androidSdk?.latestVersion == null) {
	await checkGradleDependencies();
	}
	return applicationBinary == null
	? await AndroidApk.fromAndroidProject(FlutterProject.current().android)
	: AndroidApk.fromApk(applicationBinary);
	case TargetPlatform.ios:
	return applicationBinary == null
	? await IOSApp.fromIosProject(FlutterProject.current().ios, buildInfo)
	: IOSApp.fromPrebuiltApp(applicationBinary);
	case TargetPlatform.tester:
	return FlutterTesterApp.fromCurrentDirectory(globals.fs);
	case TargetPlatform.darwin_x64:
	return applicationBinary == null
	? MacOSApp.fromMacOSProject(FlutterProject.current().macos)
	: MacOSApp.fromPrebuiltApp(applicationBinary);
	case TargetPlatform.web_javascript:
	if (!FlutterProject.current().web.existsSync()) {
	return null;
	}
	return WebApplicationPackage(FlutterProject.current());
	case TargetPlatform.linux_x64:
	return applicationBinary == null
	? LinuxApp.fromLinuxProject(FlutterProject.current().linux)
	: LinuxApp.fromPrebuiltApp(applicationBinary);
	case TargetPlatform.windows_x64:
	return applicationBinary == null
	? WindowsApp.fromWindowsProject(FlutterProject.current().windows)
	: WindowsApp.fromPrebuiltApp(applicationBinary);
	case TargetPlatform.fuchsia_arm64:
	case TargetPlatform.fuchsia_x64:
	return applicationBinary == null
	? FuchsiaApp.fromFuchsiaProject(FlutterProject.current().fuchsia)
	: FuchsiaApp.fromPrebuiltApp(applicationBinary);
	}
	assert(platform != null);
	return null;
	}
	}

	abstract class ApplicationPackage {
	ApplicationPackage({ @required this.id })
	: assert(id != null);

	/// Package ID from the Android Manifest or equivalent.
	final String id;

	String get name;

	String get displayName => name;

	File get packagesFile => null;

	@override
	String toString() => displayName ?? id;
	}

	class AndroidApk extends ApplicationPackage {
	AndroidApk({
	String id,
	@required this.file,
	@required this.versionCode,
	@required this.launchActivity,
	}) : assert(file != null),
	assert(launchActivity != null),
	super(id: id);

	/// Creates a new AndroidApk from an existing APK.
	factory AndroidApk.fromApk(File apk) {
	final String aaptPath = globals.androidSdk?.latestVersion?.aaptPath;
	if (aaptPath == null) {
	globals.printError(userMessages.aaptNotFound);
	return null;
	}

	String apptStdout;
	try {
	apptStdout = processUtils.runSync(
	<String>[
	aaptPath,
	'dump',
	'xmltree',
	apk.path,
	'AndroidManifest.xml',
	],
	throwOnError: true,
	).stdout.trim();
	} on ProcessException catch (error) {
	globals.printError('Failed to extract manifest from APK: $error.');
	return null;
	}

	final ApkManifestData data = ApkManifestData.parseFromXmlDump(apptStdout);

	if (data == null) {
	globals.printError('Unable to read manifest info from ${apk.path}.');
	return null;
	}

	if (data.packageName == null \|\| data.launchableActivityName == null) {
	globals.printError('Unable to read manifest info from ${apk.path}.');
	return null;
	}

	return AndroidApk(
	id: data.packageName,
	file: apk,
	versionCode: int.tryParse(data.versionCode),
	launchActivity: '${data.packageName}/${data.launchableActivityName}',
	);
	}

	/// Path to the actual apk file.
	final File file;

	/// The path to the activity that should be launched.
	final String launchActivity;

	/// The version code of the APK.
	final int versionCode;

	/// Creates a new AndroidApk based on the information in the Android manifest.
	static Future<AndroidApk> fromAndroidProject(AndroidProject androidProject) async {
	File apkFile;

	if (androidProject.isUsingGradle) {
	apkFile = await getGradleAppOut(androidProject);
	if (apkFile.existsSync()) {
	// Grab information from the .apk. The gradle build script might alter
	// the application Id, so we need to look at what was actually built.
	return AndroidApk.fromApk(apkFile);
	}
	// The .apk hasn't been built yet, so we work with what we have. The run
	// command will grab a new AndroidApk after building, to get the updated
	// IDs.
	} else {
	apkFile = globals.fs.file(globals.fs.path.join(getAndroidBuildDirectory(), 'app.apk'));
	}

	final File manifest = androidProject.appManifestFile;

	if (!manifest.existsSync()) {
	globals.printError('AndroidManifest.xml could not be found.');
	globals.printError('Please check ${manifest.path} for errors.');
	return null;
	}

	final String manifestString = manifest.readAsStringSync();
	XmlDocument document;
	try {
	document = XmlDocument.parse(manifestString);
	} on XmlParserException catch (exception) {
	String manifestLocation;
	if (androidProject.isUsingGradle) {
	manifestLocation = globals.fs.path.join(androidProject.hostAppGradleRoot.path, 'app', 'src', 'main', 'AndroidManifest.xml');
	} else {
	manifestLocation = globals.fs.path.join(androidProject.hostAppGradleRoot.path, 'AndroidManifest.xml');
	}
	globals.printError('AndroidManifest.xml is not a valid XML document.');
	globals.printError('Please check $manifestLocation for errors.');
	throwToolExit('XML Parser error message: ${exception.toString()}');
	}

	final Iterable<XmlElement> manifests = document.findElements('manifest');
	if (manifests.isEmpty) {
	globals.printError('AndroidManifest.xml has no manifest element.');
	globals.printError('Please check ${manifest.path} for errors.');
	return null;
	}
	final String packageId = manifests.first.getAttribute('package');

	String launchActivity;
	for (final XmlElement activity in document.findAllElements('activity')) {
	final String enabled = activity.getAttribute('android:enabled');
	if (enabled != null && enabled == 'false') {
	continue;
	}

	for (final XmlElement element in activity.findElements('intent-filter')) {
	String actionName = '';
	String categoryName = '';
	for (final XmlNode node in element.children) {
	if (node is! XmlElement) {
	continue;
	}
	final XmlElement xmlElement = node as XmlElement;
	final String name = xmlElement.getAttribute('android:name');
	if (name == 'android.intent.action.MAIN') {
	actionName = name;
	} else if (name == 'android.intent.category.LAUNCHER') {
	categoryName = name;
	}
	}
	if (actionName.isNotEmpty && categoryName.isNotEmpty) {
	final String activityName = activity.getAttribute('android:name');
	launchActivity = '$packageId/$activityName';
	break;
	}
	}
	}

	if (packageId == null \|\| launchActivity == null) {
	globals.printError('package identifier or launch activity not found.');
	globals.printError('Please check ${manifest.path} for errors.');
	return null;
	}

	return AndroidApk(
	id: packageId,
	file: apkFile,
	versionCode: null,
	launchActivity: launchActivity,
	);
	}

	@override
	File get packagesFile => file;

	@override
	String get name => file.basename;
	}

	/// Tests whether a [Directory] is an iOS bundle directory.
	bool _isBundleDirectory(Directory dir) => dir.path.endsWith('.app');

	abstract class IOSApp extends ApplicationPackage {
	IOSApp({@required String projectBundleId}) : super(id: projectBundleId);

	/// Creates a new IOSApp from an existing app bundle or IPA.
	factory IOSApp.fromPrebuiltApp(FileSystemEntity applicationBinary) {
	final FileSystemEntityType entityType = globals.fs.typeSync(applicationBinary.path);
	if (entityType == FileSystemEntityType.notFound) {
	globals.printError(
	'File "${applicationBinary.path}" does not exist. Use an app bundle or an ipa.');
	return null;
	}
	Directory bundleDir;
	if (entityType == FileSystemEntityType.directory) {
	final Directory directory = globals.fs.directory(applicationBinary);
	if (!_isBundleDirectory(directory)) {
	globals.printError('Folder "${applicationBinary.path}" is not an app bundle.');
	return null;
	}
	bundleDir = globals.fs.directory(applicationBinary);
	} else {
	// Try to unpack as an ipa.
	final Directory tempDir = globals.fs.systemTempDirectory.createTempSync('flutter_app.');
	shutdownHooks.addShutdownHook(() async {
	await tempDir.delete(recursive: true);
	}, ShutdownStage.STILL_RECORDING);
	globals.os.unzip(globals.fs.file(applicationBinary), tempDir);
	final Directory payloadDir = globals.fs.directory(
	globals.fs.path.join(tempDir.path, 'Payload'),
	);
	if (!payloadDir.existsSync()) {
	globals.printError(
	'Invalid prebuilt iOS ipa. Does not contain a "Payload" directory.');
	return null;
	}
	try {
	bundleDir = payloadDir.listSync().whereType<Directory>().singleWhere(_isBundleDirectory);
	} on StateError {
	globals.printError(
	'Invalid prebuilt iOS ipa. Does not contain a single app bundle.');
	return null;
	}
	}
	final String plistPath = globals.fs.path.join(bundleDir.path, 'Info.plist');
	if (!globals.fs.file(plistPath).existsSync()) {
	globals.printError('Invalid prebuilt iOS app. Does not contain Info.plist.');
	return null;
	}
	final String id = globals.plistParser.getValueFromFile(
	plistPath,
	PlistParser.kCFBundleIdentifierKey,
	);
	if (id == null) {
	globals.printError('Invalid prebuilt iOS app. Info.plist does not contain bundle identifier');
	return null;
	}

	return PrebuiltIOSApp(
	bundleDir: bundleDir,
	bundleName: globals.fs.path.basename(bundleDir.path),
	projectBundleId: id,
	);
	}

	static Future<IOSApp> fromIosProject(IosProject project, BuildInfo buildInfo) {
	if (getCurrentHostPlatform() != HostPlatform.darwin_x64) {
	return null;
	}
	if (!project.exists) {
	// If the project doesn't exist at all the current hint to run flutter
	// create is accurate.
	return null;
	}
	if (!project.xcodeProject.existsSync()) {
	globals.printError('Expected ios/Runner.xcodeproj but this file is missing.');
	return null;
	}
	if (!project.xcodeProjectInfoFile.existsSync()) {
	globals.printError('Expected ios/Runner.xcodeproj/project.pbxproj but this file is missing.');
	return null;
	}
	return BuildableIOSApp.fromProject(project, buildInfo);
	}

	@override
	String get displayName => id;

	String get simulatorBundlePath;

	String get deviceBundlePath;
	}

	class BuildableIOSApp extends IOSApp {
	BuildableIOSApp(this.project, String projectBundleId, String hostAppBundleName)
	: _hostAppBundleName = hostAppBundleName,
	super(projectBundleId: projectBundleId);

	static Future<BuildableIOSApp> fromProject(IosProject project, BuildInfo buildInfo) async {
	final String projectBundleId = await project.productBundleIdentifier(buildInfo);
	final String hostAppBundleName = await project.hostAppBundleName(buildInfo);
	return BuildableIOSApp(project, projectBundleId, hostAppBundleName);
	}

	final IosProject project;

	final String _hostAppBundleName;

	@override
	String get name => _hostAppBundleName;

	@override
	String get simulatorBundlePath => _buildAppPath('iphonesimulator');

	@override
	String get deviceBundlePath => _buildAppPath('iphoneos');

	String _buildAppPath(String type) {
	return globals.fs.path.join(getIosBuildDirectory(), type, _hostAppBundleName);
	}
	}

	class PrebuiltIOSApp extends IOSApp {
	PrebuiltIOSApp({
	this.bundleDir,
	this.bundleName,
	@required String projectBundleId,
	}) : super(projectBundleId: projectBundleId);

	final Directory bundleDir;
	final String bundleName;

	@override
	String get name => bundleName;

	@override
	String get simulatorBundlePath => _bundlePath;

	@override
	String get deviceBundlePath => _bundlePath;

	String get _bundlePath => bundleDir.path;
	}

	class ApplicationPackageStore {
	ApplicationPackageStore({ this.android, this.iOS, this.fuchsia });

	AndroidApk android;
	IOSApp iOS;
	FuchsiaApp fuchsia;
	LinuxApp linux;
	MacOSApp macOS;
	WindowsApp windows;

	Future<ApplicationPackage> getPackageForPlatform(
	TargetPlatform platform,
	BuildInfo buildInfo,
	) async {
	switch (platform) {
	case TargetPlatform.android:
	case TargetPlatform.android_arm:
	case TargetPlatform.android_arm64:
	case TargetPlatform.android_x64:
	case TargetPlatform.android_x86:
	android ??= await AndroidApk.fromAndroidProject(FlutterProject.current().android);
	return android;
	case TargetPlatform.ios:
	iOS ??= await IOSApp.fromIosProject(FlutterProject.current().ios, buildInfo);
	return iOS;
	case TargetPlatform.fuchsia_arm64:
	case TargetPlatform.fuchsia_x64:
	fuchsia ??= FuchsiaApp.fromFuchsiaProject(FlutterProject.current().fuchsia);
	return fuchsia;
	case TargetPlatform.darwin_x64:
	macOS ??= MacOSApp.fromMacOSProject(FlutterProject.current().macos);
	return macOS;
	case TargetPlatform.linux_x64:
	linux ??= LinuxApp.fromLinuxProject(FlutterProject.current().linux);
	return linux;
	case TargetPlatform.windows_x64:
	windows ??= WindowsApp.fromWindowsProject(FlutterProject.current().windows);
	return windows;
	case TargetPlatform.tester:
	case TargetPlatform.web_javascript:
	return null;
	}
	return null;
	}
	}

	class _Entry {
	_Element parent;
	int level;
	}

	class _Element extends _Entry {
	_Element.fromLine(String line, _Element parent) {
	// E: application (line=29)
	final List<String> parts = line.trimLeft().split(' ');
	name = parts[1];
	level = line.length - line.trimLeft().length;
	this.parent = parent;
	children = <_Entry>[];
	}

	List<_Entry> children;
	String name;

	void addChild(_Entry child) {
	children.add(child);
	}

	_Attribute firstAttribute(String name) {
	return children.whereType<_Attribute>().firstWhere(
	(_Attribute e) => e.key.startsWith(name),
	orElse: () => null,
	);
	}

	_Element firstElement(String name) {
	return children.whereType<_Element>().firstWhere(
	(_Element e) => e.name.startsWith(name),
	orElse: () => null,
	);
	}

	Iterable<_Element> allElements(String name) {
	return children.whereType<_Element>().where((_Element e) => e.name.startsWith(name));
	}
	}

	class _Attribute extends _Entry {
	_Attribute.fromLine(String line, _Element parent) {
	// A: android:label(0x01010001)="hello_world" (Raw: "hello_world")
	const String attributePrefix = 'A: ';
	final List<String> keyVal = line
	.substring(line.indexOf(attributePrefix) + attributePrefix.length)
	.split('=');
	key = keyVal[0];
	value = keyVal[1];
	level = line.length - line.trimLeft().length;
	this.parent = parent;
	}

	String key;
	String value;
	}

	class ApkManifestData {
	ApkManifestData._(this._data);

	static bool isAttributeWithValuePresent(_Element baseElement,
	String childElement, String attributeName, String attributeValue) {
	final Iterable<_Element> allElements = baseElement.allElements(childElement);
	for (final _Element oneElement in allElements) {
	final String elementAttributeValue = oneElement
	?.firstAttribute(attributeName)
	?.value;
	if (elementAttributeValue != null &&
	elementAttributeValue.startsWith(attributeValue)) {
	return true;
	}
	}
	return false;
	}

	static ApkManifestData parseFromXmlDump(String data) {
	if (data == null \|\| data.trim().isEmpty) {
	return null;
	}

	final List<String> lines = data.split('\n');
	assert(lines.length > 3);

	final int manifestLine = lines.indexWhere((String line) => line.contains('E: manifest'));
	final _Element manifest = _Element.fromLine(lines[manifestLine], null);
	_Element currentElement = manifest;

	for (final String line in lines.skip(manifestLine)) {
	final String trimLine = line.trimLeft();
	final int level = line.length - trimLine.length;

	// Handle level out
	while (currentElement.parent != null && level <= currentElement.level) {
	currentElement = currentElement.parent;
	}

	if (level > currentElement.level) {
	switch (trimLine[0]) {
	case 'A':
	currentElement
	.addChild(_Attribute.fromLine(line, currentElement));
	break;
	case 'E':
	final _Element element = _Element.fromLine(line, currentElement);
	currentElement.addChild(element);
	currentElement = element;
	}
	}
	}

	final _Element application = manifest.firstElement('application');
	if (application == null) {
	return null;
	}

	final Iterable<_Element> activities = application.allElements('activity');

	_Element launchActivity;
	for (final _Element activity in activities) {
	final _Attribute enabled = activity.firstAttribute('android:enabled');
	final Iterable<_Element> intentFilters = activity.allElements('intent-filter');
	final bool isEnabledByDefault = enabled == null;
	final bool isExplicitlyEnabled = enabled != null && enabled.value.contains('0xffffffff');
	if (!(isEnabledByDefault \|\| isExplicitlyEnabled)) {
	continue;
	}

	for (final _Element element in intentFilters) {
	final bool isMainAction = isAttributeWithValuePresent(
	element, 'action', 'android:name', '"android.intent.action.MAIN"');
	if (!isMainAction) {
	continue;
	}
	final bool isLauncherCategory = isAttributeWithValuePresent(
	element, 'category', 'android:name',
	'"android.intent.category.LAUNCHER"');
	if (!isLauncherCategory) {
	continue;
	}
	launchActivity = activity;
	break;
	}
	if (launchActivity != null) {
	break;
	}
	}

	final _Attribute package = manifest.firstAttribute('package');
	// "io.flutter.examples.hello_world" (Raw: "io.flutter.examples.hello_world")
	final String packageName = package.value.substring(1, package.value.indexOf('" '));

	if (launchActivity == null) {
	globals.printError('Error running $packageName. Default activity not found');
	return null;
	}

	final _Attribute nameAttribute = launchActivity.firstAttribute('android:name');
	// "io.flutter.examples.hello_world.MainActivity" (Raw: "io.flutter.examples.hello_world.MainActivity")
	final String activityName = nameAttribute
	.value.substring(1, nameAttribute.value.indexOf('" '));

	// Example format: (type 0x10)0x1
	final _Attribute versionCodeAttr = manifest.firstAttribute('android:versionCode');
	if (versionCodeAttr == null) {
	globals.printError('Error running $packageName. Manifest versionCode not found');
	return null;
	}
	if (!versionCodeAttr.value.startsWith('(type 0x10)')) {
	globals.printError('Error running $packageName. Manifest versionCode invalid');
	return null;
	}
	final int versionCode = int.tryParse(versionCodeAttr.value.substring(11));
	if (versionCode == null) {
	globals.printError('Error running $packageName. Manifest versionCode invalid');
	return null;
	}

	final Map<String, Map<String, String>> map = <String, Map<String, String>>{};
	map['package'] = <String, String>{'name': packageName};
	map['version-code'] = <String, String>{'name': versionCode.toString()};
	map['launchable-activity'] = <String, String>{'name': activityName};

	return ApkManifestData._(map);
	}

	final Map<String, Map<String, String>> _data;

	@visibleForTesting
	Map<String, Map<String, String>> get data =>
	UnmodifiableMapView<String, Map<String, String>>(_data);

	String get packageName => _data['package'] == null ? null : _data['package']['name'];

	String get versionCode => _data['version-code'] == null ? null : _data['version-code']['name'];

	String get launchableActivityName {
	return _data['launchable-activity'] == null ? null : _data['launchable-activity']['name'];
	}

	@override
	String toString() => _data.toString();
	}