refactor(share_plus)!: Share API cleanup (#2832)

Co-authored-by: Volodymyr Buberenko <[email protected]>
fluttercommunity · Apr 15, 2024 · fd0511c · fd0511c
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diff --git a/packages/share_plus/share_plus/README.md b/packages/share_plus/share_plus/README.md
@@ -11,14 +11,16 @@
 A Flutter plugin to share content from your Flutter app via the platform's
 share dialog.
 
-Wraps the `ACTION_SEND` Intent on Android and `UIActivityViewController`
-on iOS.
+Wraps the `ACTION_SEND` Intent on Android, `UIActivityViewController`
+on iOS, or equivalent platform content sharing methods.
 
 ## Platform Support
 
-| Android | iOS | MacOS | Web | Linux | Windows |
-| :-----: | :-: | :---: | :-: | :---: | :----: |
-|   ✅    | ✅  |  ✅   | ✅  |  ✅   |   ✅   |
+| Method        | Android | iOS | MacOS | Web | Linux | Windows |
+| :-----------: | :-----: | :-: | :---: | :-: | :---: | :----: |
+| `share`       |   ✅    | ✅  |  ✅   | ✅  |  ✅   |   ✅   |
+| `shareUri`    |   ✅    | ✅  |       |     |       |        |
+| `shareXFiles` |   ✅    | ✅  |  ✅   | ✅  |       |   ✅   |
 
 Also compatible with Windows and Linux by using "mailto" to share text via Email.
 
@@ -28,15 +30,15 @@ Sharing files is not supported on Linux.
 
 To use this plugin, add `share_plus` as a [dependency in your pubspec.yaml file](https://plus.fluttercommunity.dev/docs/overview).
 
-## Example
-
 Import the library.
 
 ```dart
 import 'package:share_plus/share_plus.dart';
 ```
 
-Then invoke the static `share` method anywhere in your Dart code.
+### Share Text
+
+Invoke the static `share()` method anywhere in your Dart code.
 
 ```dart
 Share.share('check out my website https://example.com');
@@ -49,16 +51,18 @@ sharing to email.
 Share.share('check out my website https://example.com', subject: 'Look what I made!');
 ```
 
-If you are interested in the action your user performed with the share sheet, you can instead use the `shareWithResult` method.
+`share()` returns `status` object that allows to check the result of user action in the share sheet.
 
 ```dart
-final result = await Share.shareWithResult('check out my website https://example.com');
+final result = await Share.share('check out my website https://example.com');
 
 if (result.status == ShareResultStatus.success) {
     print('Thank you for sharing my website!');
 }
 ```
 
+### Share Files
+
 To share one or multiple files, invoke the static `shareXFiles` method anywhere in your Dart code. The method returns a `ShareResult`. Optionally, you can pass `subject`, `text` and `sharePositionOrigin`.
 
 ```dart
@@ -77,7 +81,6 @@ if (result.status == ShareResultStatus.dismissed) {
 }
 ```
 
-
 On web, you can use `SharePlus.shareXFiles()`. This uses the [Web Share API](https://web.dev/web-share/)
 if it's available. Otherwise it falls back to downloading the shared files.
 See [Can I Use - Web Share API](https://caniuse.com/web-share) to understand
@@ -89,6 +92,24 @@ package.
 Share.shareXFiles([XFile('assets/hello.txt')], text: 'Great picture');
 ```
 
+### Share URI
+
+iOS supports fetching metadata from a URI when shared using `UIActivityViewController`.
+This special method is only properly supported on iOS.
+
+```dart
+Share.shareUri(uri: uri);
+```
+
+### Share Results
+
+All three methods return a `ShareResult` object which contains the following information:
+
+- `status`: a `ShareResultStatus`
+- `raw`: a `String` describing the share result, e.g. the opening app ID.
+
+Note: `status` will be `ShareResultStatus.unavailable` if the platform does not support identifying the user action.
+
 ## Known Issues
 
 ### Sharing data created with XFile.fromData
@@ -103,9 +124,13 @@ Alternatively, don't use `XFile.fromData` and instead write the data down to a `
 
 ### Mobile platforms (Android and iOS)
 
-#### Facebook limitations (WhatsApp, Instagram, Facebook Messenger)
+#### Meta (WhatsApp, Instagram, Facebook Messenger) and similar apps
+
+Due to restrictions set up by Meta/Facebook this plugin isn't capable of sharing data reliably to Facebook related apps on Android and iOS. This includes eg. sharing text to the Facebook Messenger. If you require this functionality please check the native Facebook Sharing SDK ([https://developers.facebook.com/docs/sharing](https://developers.facebook.com/docs/sharing)) or search for other Flutter plugins implementing this SDK. More information can be found in [this issue](https://github.com/fluttercommunity/plus_plugins/issues/413).
 
-Due to restrictions set up by Facebook this plugin isn't capable of sharing data reliably to Facebook related apps on Android and iOS. This includes eg. sharing text to the Facebook Messenger. If you require this functionality please check the native Facebook Sharing SDK ([https://developers.facebook.com/docs/sharing](https://developers.facebook.com/docs/sharing)) or search for other Flutter plugins implementing this SDK. More information can be found in [this issue](https://github.com/fluttercommunity/plus_plugins/issues/413).
+Other apps may also give problems when attempting to share content to them.
+We cannot warranty that a 3rd party app will properly implement the share functionality.
+Therefore, all bugs reported regarding compatibility with a specific app will be closed.
 
 #### Localization in Apple platforms
 

diff --git a/...s/share_plus/android/src/main/kotlin/dev/fluttercommunity/plus/share/MethodCallHandler.kt b/...s/share_plus/android/src/main/kotlin/dev/fluttercommunity/plus/share/MethodCallHandler.kt
@@ -1,6 +1,7 @@
 package dev.fluttercommunity.plus.share
 
 import android.os.Build
+import io.flutter.BuildConfig
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import java.io.IOException
@@ -14,41 +15,42 @@ internal class MethodCallHandler(
     override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
         expectMapArguments(call)
 
-        // The user used a *WithResult method
-        val isResultRequested = call.method.endsWith("WithResult")
         // We don't attempt to return a result if the current API version doesn't support it
         val isWithResult =
-            isResultRequested && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1
+            Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1
 
-        if (isWithResult && !manager.setCallback(result)) return
+        if (isWithResult)
+            manager.setCallback(result)
 
         try {
             when (call.method) {
                 "shareUri" -> {
                     share.share(
-                        call.argument<Any>("uri") as String, subject = null, withResult = false
+                        call.argument<Any>("uri") as String,
+                        subject = null,
+                        withResult = isWithResult,
                     )
-                    success(isWithResult, isResultRequested, result)
+                    success(isWithResult, result)
                 }
 
-                "share", "shareWithResult" -> {
+                "share" -> {
                     share.share(
                         call.argument<Any>("text") as String,
                         call.argument<Any>("subject") as String?,
                         isWithResult,
                     )
-                    success(isWithResult, isResultRequested, result)
+                    success(isWithResult, result)
                 }
 
-                "shareFiles", "shareFilesWithResult" -> {
+                "shareFiles" -> {
                     share.shareFiles(
                         call.argument<List<String>>("paths")!!,
                         call.argument<List<String>?>("mimeTypes"),
                         call.argument<String?>("text"),
                         call.argument<String?>("subject"),
                         isWithResult,
                     )
-                    success(isWithResult, isResultRequested, result)
+                    success(isWithResult, result)
                 }
 
                 else -> result.notImplemented()
@@ -61,15 +63,10 @@ internal class MethodCallHandler(
 
     private fun success(
         isWithResult: Boolean,
-        isResultRequested: Boolean,
         result: MethodChannel.Result
     ) {
         if (!isWithResult) {
-            if (isResultRequested) {
-                result.success("dev.fluttercommunity.plus/share/unavailable")
-            } else {
-                result.success(null)
-            }
+            result.success("dev.fluttercommunity.plus/share/unavailable")
         }
     }
 

diff --git a/...share_plus/android/src/main/kotlin/dev/fluttercommunity/plus/share/ShareSuccessManager.kt b/...share_plus/android/src/main/kotlin/dev/fluttercommunity/plus/share/ShareSuccessManager.kt
@@ -17,20 +17,22 @@ internal class ShareSuccessManager(private val context: Context) : ActivityResul
      * Set result callback that will wait for the share-sheet to close and get either
      * the componentname of the chosen option or an empty string on dismissal.
      */
-    fun setCallback(callback: MethodChannel.Result): Boolean {
+    fun setCallback(callback: MethodChannel.Result) {
         return if (isCalledBack.compareAndSet(true, false)) {
             // Prepare all state for new share
             SharePlusPendingIntent.result = ""
             isCalledBack.set(false)
             this.callback = callback
-            true
         } else {
-            callback.error(
-                "Share callback error",
-                "prior share-sheet did not call back, did you await it? Maybe use non-result variant",
-                null,
-            )
-            false
+            // Ensure no deadlocks.
+            // Return result of any waiting call.
+            // e.g. user called to `share` but did not await for result.
+            this.callback?.success(RESULT_UNAVAILABLE)
+
+            // Prepare all state for new share
+            SharePlusPendingIntent.result = ""
+            isCalledBack.set(false)
+            this.callback = callback
         }
     }
 

diff --git a/packages/share_plus/share_plus/example/integration_test/share_plus_test.dart b/packages/share_plus/share_plus/example/integration_test/share_plus_test.dart
@@ -12,17 +12,15 @@ void main() {
   IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
   testWidgets('Can launch share', (WidgetTester tester) async {
-    expect(Share.share('message', subject: 'title'), completes);
-  }, skip: Platform.isMacOS);
-
-  testWidgets('Can launch share in MacOS', (WidgetTester tester) async {
+    // Check isNotNull because we cannot wait for ShareResult
     expect(Share.share('message', subject: 'title'), isNotNull);
-  }, skip: !Platform.isMacOS);
-
-  testWidgets('Can launch shareWithResult', (WidgetTester tester) async {
-    expect(Share.shareWithResult('message', subject: 'title'), isNotNull);
   });
 
+  testWidgets('Can launch shareUri', (WidgetTester tester) async {
+    // Check isNotNull because we cannot wait for ShareResult
+    expect(Share.shareUri(Uri.parse('https://example.com')), isNotNull);
+  }, skip: !Platform.isAndroid && !Platform.isIOS);
+
   testWidgets('Can shareXFile created using File.fromData()',
       (WidgetTester tester) async {
     final bytes = Uint8List.fromList([1, 2, 3, 4, 5, 6, 7, 8]);

diff --git a/packages/share_plus/share_plus/example/ios/Flutter/AppFrameworkInfo.plist b/packages/share_plus/share_plus/example/ios/Flutter/AppFrameworkInfo.plist
@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>11.0</string>
+  <string>12.0</string>
 </dict>
 </plist>
diff --git a/packages/share_plus/share_plus/example/ios/Runner.xcodeproj/project.pbxproj b/packages/share_plus/share_plus/example/ios/Runner.xcodeproj/project.pbxproj
@@ -97,7 +97,6 @@
 				535124FC9BB266447EC60189 /* Pods-RunnerTests.release.xcconfig */,
 				A8F8F8E1F770CE9853568BC6 /* Pods-RunnerTests.profile.xcconfig */,
 			);
-			name = Pods;
 			path = Pods;
 			sourceTree = "<group>";
 		};
@@ -215,7 +214,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1300;
+				LastUpgradeCheck = 1510;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					331C8080294A63A400263BE5 = {

diff --git a/...share_plus/share_plus/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/...share_plus/share_plus/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1300"
+   LastUpgradeVersion = "1510"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

diff --git a/packages/share_plus/share_plus/example/ios/Runner/Info.plist b/packages/share_plus/share_plus/example/ios/Runner/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleDisplayName</key>
@@ -24,6 +26,8 @@
 	<string>$(FLUTTER_BUILD_NUMBER)</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIMainStoryboardFile</key>
@@ -41,11 +45,9 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
+	<key>NSPhotoLibraryUsageDescription</key>
+	<string>Load photos for sharing functionality</string>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
-	<key>CADisableMinimumFrameDurationOnPhone</key>
-	<true/>
-	<key>UIApplicationSupportsIndirectInputEvents</key>
-	<true/>
 </dict>
 </plist>