diff --git a/packages/url_launcher/url_launcher/CHANGELOG.md b/packages/url_launcher/url_launcher/CHANGELOG.md
index 300d6d9342f5..1a07090992d5 100644
--- a/packages/url_launcher/url_launcher/CHANGELOG.md
+++ b/packages/url_launcher/url_launcher/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 5.2.7
+
+* Minor unit test changes and added a lint for public DartDocs.
+
 ## 5.2.6
 
 *  Remove AndroidX warnings.
diff --git a/packages/url_launcher/url_launcher/analysis_options.yaml b/packages/url_launcher/url_launcher/analysis_options.yaml
new file mode 100644
index 000000000000..6c7fd57bb022
--- /dev/null
+++ b/packages/url_launcher/url_launcher/analysis_options.yaml
@@ -0,0 +1,11 @@
+# This exists to add a lint for missing API docs just on this specific package,
+# since not all packages have coverage for all their public members yet and
+# adding it in would be non-trivial. `public_member_api_docs` should be applied
+# to new packages going forward, and ideally the main `analysis_options.yaml`
+# file as soon as possible.
+
+include: ../../../analysis_options.yaml
+
+linter:
+  rules:
+    - public_member_api_docs
diff --git a/packages/url_launcher/url_launcher/example/lib/main.dart b/packages/url_launcher/url_launcher/example/lib/main.dart
index b4a7e4275bfc..00ab6c5b047d 100644
--- a/packages/url_launcher/url_launcher/example/lib/main.dart
+++ b/packages/url_launcher/url_launcher/example/lib/main.dart
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// ignore_for_file: public_member_api_docs
+
 import 'dart:async';
 
 import 'package:flutter/material.dart';
diff --git a/packages/url_launcher/url_launcher/pubspec.yaml b/packages/url_launcher/url_launcher/pubspec.yaml
index 2477e118586e..e0c59134f8f2 100644
--- a/packages/url_launcher/url_launcher/pubspec.yaml
+++ b/packages/url_launcher/url_launcher/pubspec.yaml
@@ -3,7 +3,7 @@ description: Flutter plugin for launching a URL on Android and iOS. Supports
   web, phone, SMS, and email schemes.
 author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/url_launcher/url_launcher
-version: 5.2.6
+version: 5.2.7
 
 flutter:
   plugin:
diff --git a/packages/url_launcher/url_launcher/test/url_launcher_test.dart b/packages/url_launcher/url_launcher/test/url_launcher_test.dart
index e7150bebde05..2481e5a0ee63 100644
--- a/packages/url_launcher/url_launcher/test/url_launcher_test.dart
+++ b/packages/url_launcher/url_launcher/test/url_launcher_test.dart
@@ -2,8 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'dart:async';
+import 'dart:ui';
+import 'package:flutter_test/flutter_test.dart';
 import 'package:mockito/mockito.dart';
-import 'package:test/test.dart';
+import 'package:flutter/foundation.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
 import 'package:flutter/services.dart' show PlatformException;
@@ -11,166 +14,197 @@ import 'package:flutter/services.dart' show PlatformException;
 void main() {
   final MockUrlLauncher mock = MockUrlLauncher();
   when(mock.isMock).thenReturn(true);
-
   UrlLauncherPlatform.instance = mock;
 
-  test('canLaunch', () async {
-    await canLaunch('http://example.com/');
-    expect(verify(mock.canLaunch(captureAny)).captured.single,
-        'http://example.com/');
+  test('closeWebView default behavior', () async {
+    await closeWebView();
+    verify(mock.closeWebView());
   });
 
-  test('launch default behavior', () async {
-    await launch('http://example.com/');
-    expect(
-      verify(mock.launch(
-        captureAny,
-        useSafariVC: captureAnyNamed('useSafariVC'),
-        useWebView: captureAnyNamed('useWebView'),
-        enableJavaScript: captureAnyNamed('enableJavaScript'),
-        enableDomStorage: captureAnyNamed('enableDomStorage'),
-        universalLinksOnly: captureAnyNamed('universalLinksOnly'),
-        headers: captureAnyNamed('headers'),
-      )).captured,
-      <dynamic>[
-        'http://example.com/',
-        true,
-        false,
-        false,
-        false,
-        false,
-        <String, String>{},
-      ],
-    );
-  });
+  group('canLaunch', () {
+    test('returns true', () async {
+      when(mock.canLaunch('foo')).thenAnswer((_) => Future<bool>.value(true));
 
-  test('launch with headers', () async {
-    await launch(
-      'http://example.com/',
-      headers: <String, String>{'key': 'value'},
-    );
-    expect(
-      verify(mock.launch(
-        any,
-        useSafariVC: anyNamed('useSafariVC'),
-        useWebView: anyNamed('useWebView'),
-        enableJavaScript: anyNamed('enableJavaScript'),
-        enableDomStorage: anyNamed('enableDomStorage'),
-        universalLinksOnly: anyNamed('universalLinksOnly'),
-        headers: captureAnyNamed('headers'),
-      )).captured.single,
-      <String, String>{'key': 'value'},
-    );
-  });
+      final bool result = await canLaunch('foo');
 
-  test('launch force SafariVC', () async {
-    await launch('http://example.com/', forceSafariVC: true);
-    expect(
-      verify(mock.launch(
-        any,
-        useSafariVC: captureAnyNamed('useSafariVC'),
-        useWebView: anyNamed('useWebView'),
-        enableJavaScript: anyNamed('enableJavaScript'),
-        enableDomStorage: anyNamed('enableDomStorage'),
-        universalLinksOnly: anyNamed('universalLinksOnly'),
-        headers: anyNamed('headers'),
-      )).captured.single,
-      true,
-    );
-  });
+      expect(result, isTrue);
+    });
 
-  test('launch universal links only', () async {
-    await launch('http://example.com/',
-        forceSafariVC: false, universalLinksOnly: true);
-    expect(
-      verify(mock.launch(
-        any,
-        useSafariVC: captureAnyNamed('useSafariVC'),
-        useWebView: anyNamed('useWebView'),
-        enableJavaScript: anyNamed('enableJavaScript'),
-        enableDomStorage: anyNamed('enableDomStorage'),
-        universalLinksOnly: captureAnyNamed('universalLinksOnly'),
-        headers: anyNamed('headers'),
-      )).captured,
-      <bool>[false, true],
-    );
-  });
+    test('returns false', () async {
+      when(mock.canLaunch('foo')).thenAnswer((_) => Future<bool>.value(false));
 
-  test('launch force WebView', () async {
-    await launch('http://example.com/', forceWebView: true);
-    expect(
-      verify(mock.launch(
-        any,
-        useSafariVC: anyNamed('useSafariVC'),
-        useWebView: captureAnyNamed('useWebView'),
-        enableJavaScript: anyNamed('enableJavaScript'),
-        enableDomStorage: anyNamed('enableDomStorage'),
-        universalLinksOnly: anyNamed('universalLinksOnly'),
-        headers: anyNamed('headers'),
-      )).captured.single,
-      true,
-    );
-  });
+      final bool result = await canLaunch('foo');
 
-  test('launch force WebView enable javascript', () async {
-    await launch('http://example.com/',
-        forceWebView: true, enableJavaScript: true);
-    expect(
-      verify(mock.launch(
-        any,
-        useSafariVC: anyNamed('useSafariVC'),
-        useWebView: captureAnyNamed('useWebView'),
-        enableJavaScript: captureAnyNamed('enableJavaScript'),
-        enableDomStorage: anyNamed('enableDomStorage'),
-        universalLinksOnly: anyNamed('universalLinksOnly'),
-        headers: anyNamed('headers'),
-      )).captured,
-      <bool>[true, true],
-    );
+      expect(result, isFalse);
+    });
   });
+  group('launch', () {
+    test('requires a non-null urlString', () {
+      expect(() => launch(null), throwsAssertionError);
+    });
 
-  test('launch force WebView enable DOM storage', () async {
-    await launch('http://example.com/',
-        forceWebView: true, enableDomStorage: true);
-    expect(
-      verify(mock.launch(
-        any,
-        useSafariVC: anyNamed('useSafariVC'),
-        useWebView: captureAnyNamed('useWebView'),
-        enableJavaScript: anyNamed('enableJavaScript'),
-        enableDomStorage: captureAnyNamed('enableDomStorage'),
-        universalLinksOnly: anyNamed('universalLinksOnly'),
-        headers: anyNamed('headers'),
-      )).captured,
-      <bool>[true, true],
-    );
-  });
+    test('default behavior', () async {
+      await launch('http://flutter.dev/');
+      expect(
+        verify(mock.launch(
+          captureAny,
+          useSafariVC: captureAnyNamed('useSafariVC'),
+          useWebView: captureAnyNamed('useWebView'),
+          enableJavaScript: captureAnyNamed('enableJavaScript'),
+          enableDomStorage: captureAnyNamed('enableDomStorage'),
+          universalLinksOnly: captureAnyNamed('universalLinksOnly'),
+          headers: captureAnyNamed('headers'),
+        )).captured,
+        <dynamic>[
+          'http://flutter.dev/',
+          true,
+          false,
+          false,
+          false,
+          false,
+          <String, String>{},
+        ],
+      );
+    });
 
-  test('launch force SafariVC to false', () async {
-    await launch('http://example.com/', forceSafariVC: false);
-    expect(
-      // ignore: missing_required_param
-      verify(mock.launch(
-        any,
-        useSafariVC: captureAnyNamed('useSafariVC'),
-        useWebView: anyNamed('useWebView'),
-        enableJavaScript: anyNamed('enableJavaScript'),
-        enableDomStorage: anyNamed('enableDomStorage'),
-        universalLinksOnly: anyNamed('universalLinksOnly'),
-        headers: anyNamed('headers'),
-      )).captured.single,
-      false,
-    );
-  });
+    test('with headers', () async {
+      await launch(
+        'http://flutter.dev/',
+        headers: <String, String>{'key': 'value'},
+      );
+      expect(
+        verify(mock.launch(
+          any,
+          useSafariVC: anyNamed('useSafariVC'),
+          useWebView: anyNamed('useWebView'),
+          enableJavaScript: anyNamed('enableJavaScript'),
+          enableDomStorage: anyNamed('enableDomStorage'),
+          universalLinksOnly: anyNamed('universalLinksOnly'),
+          headers: captureAnyNamed('headers'),
+        )).captured.single,
+        <String, String>{'key': 'value'},
+      );
+    });
 
-  test('cannot launch a non-web in webview', () async {
-    expect(() async => await launch('tel:555-555-5555', forceWebView: true),
-        throwsA(isA<PlatformException>()));
-  });
+    test('force SafariVC', () async {
+      await launch('http://flutter.dev/', forceSafariVC: true);
+      expect(
+        verify(mock.launch(
+          any,
+          useSafariVC: captureAnyNamed('useSafariVC'),
+          useWebView: anyNamed('useWebView'),
+          enableJavaScript: anyNamed('enableJavaScript'),
+          enableDomStorage: anyNamed('enableDomStorage'),
+          universalLinksOnly: anyNamed('universalLinksOnly'),
+          headers: anyNamed('headers'),
+        )).captured.single,
+        true,
+      );
+    });
 
-  test('closeWebView default behavior', () async {
-    await closeWebView();
-    verify(mock.closeWebView());
+    test('universal links only', () async {
+      await launch('http://flutter.dev/',
+          forceSafariVC: false, universalLinksOnly: true);
+      expect(
+        verify(mock.launch(
+          any,
+          useSafariVC: captureAnyNamed('useSafariVC'),
+          useWebView: anyNamed('useWebView'),
+          enableJavaScript: anyNamed('enableJavaScript'),
+          enableDomStorage: anyNamed('enableDomStorage'),
+          universalLinksOnly: captureAnyNamed('universalLinksOnly'),
+          headers: anyNamed('headers'),
+        )).captured,
+        <bool>[false, true],
+      );
+    });
+
+    test('force WebView', () async {
+      await launch('http://flutter.dev/', forceWebView: true);
+      expect(
+        verify(mock.launch(
+          any,
+          useSafariVC: anyNamed('useSafariVC'),
+          useWebView: captureAnyNamed('useWebView'),
+          enableJavaScript: anyNamed('enableJavaScript'),
+          enableDomStorage: anyNamed('enableDomStorage'),
+          universalLinksOnly: anyNamed('universalLinksOnly'),
+          headers: anyNamed('headers'),
+        )).captured.single,
+        true,
+      );
+    });
+
+    test('force WebView enable javascript', () async {
+      await launch('http://flutter.dev/',
+          forceWebView: true, enableJavaScript: true);
+      expect(
+        verify(mock.launch(
+          any,
+          useSafariVC: anyNamed('useSafariVC'),
+          useWebView: captureAnyNamed('useWebView'),
+          enableJavaScript: captureAnyNamed('enableJavaScript'),
+          enableDomStorage: anyNamed('enableDomStorage'),
+          universalLinksOnly: anyNamed('universalLinksOnly'),
+          headers: anyNamed('headers'),
+        )).captured,
+        <bool>[true, true],
+      );
+    });
+
+    test('force WebView enable DOM storage', () async {
+      await launch('http://flutter.dev/',
+          forceWebView: true, enableDomStorage: true);
+      expect(
+        verify(mock.launch(
+          any,
+          useSafariVC: anyNamed('useSafariVC'),
+          useWebView: captureAnyNamed('useWebView'),
+          enableJavaScript: anyNamed('enableJavaScript'),
+          enableDomStorage: captureAnyNamed('enableDomStorage'),
+          universalLinksOnly: anyNamed('universalLinksOnly'),
+          headers: anyNamed('headers'),
+        )).captured,
+        <bool>[true, true],
+      );
+    });
+
+    test('force SafariVC to false', () async {
+      await launch('http://flutter.dev/', forceSafariVC: false);
+      expect(
+        // ignore: missing_required_param
+        verify(mock.launch(
+          any,
+          useSafariVC: captureAnyNamed('useSafariVC'),
+          useWebView: anyNamed('useWebView'),
+          enableJavaScript: anyNamed('enableJavaScript'),
+          enableDomStorage: anyNamed('enableDomStorage'),
+          universalLinksOnly: anyNamed('universalLinksOnly'),
+          headers: anyNamed('headers'),
+        )).captured.single,
+        false,
+      );
+    });
+
+    test('cannot launch a non-web in webview', () async {
+      expect(() async => await launch('tel:555-555-5555', forceWebView: true),
+          throwsA(isA<PlatformException>()));
+    });
+
+    test('controls system UI when changing statusBarBrightness', () async {
+      final TestWidgetsFlutterBinding binding =
+          TestWidgetsFlutterBinding.ensureInitialized();
+      debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
+      binding.renderView.automaticSystemUiAdjustment = true;
+      final Future<bool> launchResult =
+          launch('http://flutter.dev/', statusBarBrightness: Brightness.dark);
+
+      // Should take over control of the automaticSystemUiAdjustment while it's
+      // pending, then restore it back to normal after the launch finishes.
+      expect(binding.renderView.automaticSystemUiAdjustment, isFalse);
+      await launchResult;
+      expect(binding.renderView.automaticSystemUiAdjustment, isTrue);
+    });
   });
 }
 
diff --git a/packages/url_launcher/url_launcher_platform_interface/CHANGELOG.md b/packages/url_launcher/url_launcher_platform_interface/CHANGELOG.md
index 7aa8ee011524..18d373d183f2 100644
--- a/packages/url_launcher/url_launcher_platform_interface/CHANGELOG.md
+++ b/packages/url_launcher/url_launcher_platform_interface/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.3
+
+* Minor DartDoc changes and add a lint for missing DartDocs.
+
 ## 1.0.2
 
 * Use package URI in test directory to import code from lib.
diff --git a/packages/url_launcher/url_launcher_platform_interface/analysis_options.yaml b/packages/url_launcher/url_launcher_platform_interface/analysis_options.yaml
new file mode 100644
index 000000000000..6c7fd57bb022
--- /dev/null
+++ b/packages/url_launcher/url_launcher_platform_interface/analysis_options.yaml
@@ -0,0 +1,11 @@
+# This exists to add a lint for missing API docs just on this specific package,
+# since not all packages have coverage for all their public members yet and
+# adding it in would be non-trivial. `public_member_api_docs` should be applied
+# to new packages going forward, and ideally the main `analysis_options.yaml`
+# file as soon as possible.
+
+include: ../../../analysis_options.yaml
+
+linter:
+  rules:
+    - public_member_api_docs
diff --git a/packages/url_launcher/url_launcher_platform_interface/lib/url_launcher_platform_interface.dart b/packages/url_launcher/url_launcher_platform_interface/lib/url_launcher_platform_interface.dart
index a17aa0626126..64eeec7cae2d 100644
--- a/packages/url_launcher/url_launcher_platform_interface/lib/url_launcher_platform_interface.dart
+++ b/packages/url_launcher/url_launcher_platform_interface/lib/url_launcher_platform_interface.dart
@@ -24,17 +24,15 @@ abstract class UrlLauncherPlatform {
   @visibleForTesting
   bool get isMock => false;
 
+  static UrlLauncherPlatform _instance = MethodChannelUrlLauncher();
+
   /// The default instance of [UrlLauncherPlatform] to use.
   ///
-  /// Platform-specific plugins should override this with their own
-  /// platform-specific class that extends [UrlLauncherPlatform] when they
-  /// register themselves.
-  ///
   /// Defaults to [MethodChannelUrlLauncher].
-  static UrlLauncherPlatform _instance = MethodChannelUrlLauncher();
-
   static UrlLauncherPlatform get instance => _instance;
 
+  /// Platform-specific plugins should set this with their own platform-specific
+  /// class that extends [UrlLauncherPlatform] when they register themselves.
   // TODO(amirh): Extract common platform interface logic.
   // https://github.com/flutter/flutter/issues/43368
   static set instance(UrlLauncherPlatform instance) {
diff --git a/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml b/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml
index 192fbe7e8066..3f7aa4832c41 100644
--- a/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml
@@ -4,7 +4,7 @@ author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/url_launcher/url_launcher_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 1.0.2
+version: 1.0.3
 
 dependencies:
   flutter: