fix(share_plus): remove canLaunch check

packages/share_plus/share_plus/lib/src/share_plus_linux.dart

@@ -19,7 +19,6 @@ class SharePlusLinuxPlugin extends SharePlatform {
   }
 
   /// Share text.
-  /// Throws a [PlatformException] if `mailto:` scheme cannot be handled.
   @override
   Future<void> share(
     String text, {
@@ -40,10 +39,12 @@ class SharePlusLinuxPlugin extends SharePlatform {
           .join('&'),
     );
 
-    if (await urlLauncher.canLaunch(uri.toString())) {
-      await urlLauncher.launchUrl(uri.toString(), const LaunchOptions());
-    } else {
-      throw Exception('Unable to share on web');
+    final launchResult = await urlLauncher.launchUrl(
+      uri.toString(),
+      const LaunchOptions(),
+    );
+    if (!launchResult) {
+      throw Exception('Failed to launch mailto: URI');
     }
   }
 

packages/share_plus/share_plus/lib/src/share_plus_web.dart

@@ -50,10 +50,12 @@ class SharePlusWebPlugin extends SharePlatform {
             .join('&'),
       );
 
-      if (await urlLauncher.canLaunch(uri.toString())) {
-        await urlLauncher.launchUrl(uri.toString(), const LaunchOptions());
-      } else {
-        throw Exception('Unable to share on web');
+      final launchResult = await urlLauncher.launchUrl(
+        uri.toString(),
+        const LaunchOptions(),
+      );
+      if (!launchResult) {
+        throw Exception('Failed to launch mailto: URI');
       }
     }
   }

packages/share_plus/share_plus/lib/src/share_plus_windows.dart

@@ -3,6 +3,7 @@ library share_plus_windows;
 
 import 'dart:ui';
 
+import 'package:flutter/services.dart';
 import 'package:share_plus/src/windows_version_helper.dart';
 import 'package:share_plus_platform_interface/share_plus_platform_interface.dart';
 import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
@@ -44,10 +45,12 @@ class SharePlusWindowsPlugin extends SharePlatform {
           .join('&'),
     );
 
-    if (await urlLauncher.canLaunch(uri.toString())) {
-      await urlLauncher.launchUrl(uri.toString(), const LaunchOptions());
-    } else {
-      throw Exception('Unable to share on windows');
+    final launchResult = await urlLauncher.launchUrl(
+      uri.toString(),
+      const LaunchOptions(),
+    );
+    if (!launchResult) {
+      throw Exception('Failed to launch mailto: URI');
     }
   }
 

packages/share_plus/share_plus/test/share_plus_linux_test.dart

@@ -4,6 +4,8 @@ import 'package:share_plus_platform_interface/share_plus_platform_interface.dart
 import 'package:url_launcher_platform_interface/link.dart';
 import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
 
+import 'url_launcher_mock.dart';
+
 void main() {
   test('registered instance', () {
     SharePlusLinuxPlugin.registerWith();
@@ -34,34 +36,3 @@ void main() {
         throwsException);
   });
 }
-
-class MockUrlLauncherPlatform extends UrlLauncherPlatform {
-  String? url;
-  bool canLaunchMockValue = true;
-
-  @override
-  LinkDelegate? get linkDelegate => throw UnimplementedError();
-
-  @override
-  Future<bool> canLaunch(String url) async {
-    return canLaunchMockValue;
-  }
-
-  @override
-  Future<bool> launch(
-    String url, {
-    required bool useSafariVC,
-    required bool useWebView,
-    required bool enableJavaScript,
-    required bool enableDomStorage,
-    required bool universalLinksOnly,
-    required Map<String, String> headers,
-    String? webOnlyWindowName,
-  }) async {
-    this.url = url;
-    if (!canLaunchMockValue) {
-      throw Exception();
-    }
-    return true;
-  }
-}

packages/share_plus/share_plus/test/share_plus_windows_test.dart

@@ -6,6 +6,8 @@ import 'package:share_plus_platform_interface/share_plus_platform_interface.dart
 import 'package:url_launcher_platform_interface/link.dart';
 import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
 
+import 'url_launcher_mock.dart';
+
 void main() {
   test(
     'registered instance',
@@ -64,31 +66,3 @@ void main() {
     skip: VersionHelper.instance.isWindows10RS5OrGreater,
   );
 }
-
-class MockUrlLauncherPlatform extends UrlLauncherPlatform {
-  String? url;
-  bool canLaunchMockValue = true;
-
-  @override
-  LinkDelegate? get linkDelegate => throw UnimplementedError();
-
-  @override
-  Future<bool> canLaunch(String url) async {
-    return canLaunchMockValue;
-  }
-
-  @override
-  Future<bool> launch(
-    String url, {
-    required bool useSafariVC,
-    required bool useWebView,
-    required bool enableJavaScript,
-    required bool enableDomStorage,
-    required bool universalLinksOnly,
-    required Map<String, String> headers,
-    String? webOnlyWindowName,
-  }) async {
-    this.url = url;
-    return true;
-  }
-}

packages/share_plus/share_plus/test/url_launcher_mock.dart

@@ -0,0 +1,30 @@
+import 'package:url_launcher_platform_interface/link.dart';
+import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
+
+class MockUrlLauncherPlatform extends UrlLauncherPlatform {
+  String? url;
+  bool canLaunchMockValue = true;
+
+  @override
+  LinkDelegate? get linkDelegate => throw UnimplementedError();
+
+  @override
+  Future<bool> canLaunch(String url) async {
+    return canLaunchMockValue;
+  }
+
+  @override
+  Future<bool> launch(
+      String url, {
+        required bool useSafariVC,
+        required bool useWebView,
+        required bool enableJavaScript,
+        required bool enableDomStorage,
+        required bool universalLinksOnly,
+        required Map<String, String> headers,
+        String? webOnlyWindowName,
+      }) async {
+    this.url = url;
+    return canLaunchMockValue;
+  }
+}