- Added AddEmailRecipient function (Android-only) (closed #140)

- Potential fix for rare "NSCallbackHelper is destroyed!" warnings
- Potential fix for #137

.github/AAR Source (Android)/java/com/yasirkula/unity/NativeShare.java

@@ -37,7 +37,7 @@ public class NativeShare
 
 	private static int isXiaomiOrMIUI = 0; // 1: true, -1: false
 
-	public static void Share( final Context context, final NativeShareResultReceiver shareResultReceiver, final String[] targetPackages, final String[] targetClasses, final String[] files, final String[] mimes, final String subject, final String text, final String title )
+	public static void Share( final Context context, final NativeShareResultReceiver shareResultReceiver, final String[] targetPackages, final String[] targetClasses, final String[] files, final String[] mimes, final String[] emailRecipients, final String subject, final String text, final String title )
 	{
 		if( files.length > 0 && GetAuthority( context ) == null )
 		{
@@ -55,6 +55,7 @@ public static void Share( final Context context, final NativeShareResultReceiver
 		bundle.putString( NativeShareFragment.TITLE_ID, title );
 		bundle.putStringArrayList( NativeShareFragment.FILES_ID, ConvertArrayToArrayList( files ) );
 		bundle.putStringArrayList( NativeShareFragment.MIMES_ID, ConvertArrayToArrayList( mimes ) );
+		bundle.putStringArrayList( NativeShareFragment.EMAIL_RECIPIENTS_ID, ConvertArrayToArrayList( emailRecipients ) );
 		bundle.putStringArrayList( NativeShareFragment.TARGET_PACKAGE_ID, ConvertArrayToArrayList( targetPackages ) );
 		bundle.putStringArrayList( NativeShareFragment.TARGET_CLASS_ID, ConvertArrayToArrayList( targetClasses ) );
 
@@ -100,6 +101,7 @@ public static Intent CreateIntentFromBundle( Context context, Bundle bundle, Arr
 		final String title = bundle.getString( NativeShareFragment.TITLE_ID );
 		final ArrayList<String> files = bundle.getStringArrayList( NativeShareFragment.FILES_ID );
 		final ArrayList<String> mimes = bundle.getStringArrayList( NativeShareFragment.MIMES_ID );
+		final ArrayList<String> emailRecipients = bundle.getStringArrayList( NativeShareFragment.EMAIL_RECIPIENTS_ID );
 		final ArrayList<String> targetPackages = bundle.getStringArrayList( NativeShareFragment.TARGET_PACKAGE_ID );
 		final ArrayList<String> targetClasses = bundle.getStringArrayList( NativeShareFragment.TARGET_CLASS_ID );
 
@@ -194,6 +196,13 @@ else if( !mimeSubtype.equals( thisMimeSubtype ) )
 			intent.setAction( Intent.ACTION_SEND );
 		}
 
+		if( emailRecipients.size() > 0 )
+		{
+			String[] emailRecipientsArray = new String[emailRecipients.size()];
+			emailRecipients.toArray( emailRecipientsArray );
+			intent.putExtra( Intent.EXTRA_EMAIL, emailRecipientsArray );
+		}
+
 		if( title.length() > 0 )
 			intent.putExtra( Intent.EXTRA_TITLE, title );
 

.github/AAR Source (Android)/java/com/yasirkula/unity/NativeShareFragment.java

@@ -28,6 +28,7 @@ public class NativeShareFragment extends Fragment
 	public static final String TARGET_CLASS_ID = "NS_TARGET_CLASS";
 	public static final String FILES_ID = "NS_FILES";
 	public static final String MIMES_ID = "NS_MIMES";
+	public static final String EMAIL_RECIPIENTS_ID = "NS_EMAIL_RECIPIENTS";
 	public static final String SUBJECT_ID = "NS_SUBJECT";
 	public static final String TEXT_ID = "NS_TEXT";
 	public static final String TITLE_ID = "NS_TITLE";
@@ -45,6 +46,8 @@ public void onCreate( Bundle savedInstanceState )
 			final Intent shareIntent = NativeShare.CreateIntentFromBundle( getActivity(), getArguments(), fileUris );
 			final String title = getArguments().getString( NativeShareFragment.TITLE_ID );
 
+			shareIntent.setFlags( Intent.FLAG_ACTIVITY_NEW_TASK );
+
 			try
 			{
 				Intent chooserIntent;

.github/README.md

@@ -44,6 +44,7 @@ Simply create a new **NativeShare** object and customize it by chaining the foll
 - `SetUrl( string url )`: sets the shared url. On supported iOS apps, this url is used to generate a preview of the target webpage. Other iOS apps may append the url to the text or omit it. While sharing a file on iOS or while sharing anything on Android, the url is appended to the text (unless the text already contains the url)
 - `AddFile( string filePath, string mime = null )`: adds the file at path to the share action. You can add multiple files of different types. The MIME of the file is automatically determined if left null; however, if the file doesn't have an extension and/or you already know the MIME of the file, you can enter the MIME manually. MIME has no effect on iOS
 - `AddFile( Texture2D texture, string createdFileName = "Image.png" )`: saves the *texture* to *Application.temporaryCachePath* with the specified filename and adds the image file to the share action
+- `AddEmailRecipient( string emailAddress )`: auto-populates the *recipients* field of e-mail applications on Android platform. Has no effect on iOS
 - `SetTitle( string title )`: sets the title of the share dialog on Android platform. Has no effect on iOS
 - `AddTarget( string androidPackageName, string androidClassName = null )`: shares content on a specific application on Android platform. If *androidClassName* is left null, list of activities in the share dialog will be narrowed down to the activities in the specified *androidPackageName* that can handle this share action. Note that androidClassName, if provided, must be the full name of the activity (with its package). You can call this function multiple times. This function has no effect on iOS
 - `SetCallback( ShareResultCallback callback )`: invokes the *callback* function after the share action is completed. **ShareResultCallback** has the following signature: `void ShareResultCallback( ShareResult result, string shareTarget )`

Plugins/NativeShare/Android/NSCallbackHelper.cs

@@ -1,4 +1,5 @@
 #if UNITY_EDITOR || UNITY_ANDROID
+using System.Collections;
 using UnityEngine;
 
 namespace NativeShareNamespace
@@ -35,11 +36,12 @@ private void Update()
 			}
 		}
 
-		private void OnApplicationFocus( bool focus )
+		private IEnumerator OnApplicationFocus( bool focus )
 		{
 			if( focus )
 			{
 				// Share sheet is closed and now Unity activity is running again. Send Unknown result if OnShareCompleted wasn't called
+				yield return null;
 				resultReceived = true;
 			}
 		}

Plugins/NativeShare/NativeShare.cs

@@ -51,6 +51,10 @@ private static AndroidJavaObject Context
 	private string title = string.Empty;
 	private string url = string.Empty;
 
+#if UNITY_EDITOR || UNITY_ANDROID
+	private readonly List<string> emailRecipients = new List<string>( 0 );
+#endif
+
 #if UNITY_EDITOR || UNITY_ANDROID
 	private readonly List<string> targetPackages = new List<string>( 0 );
 	private readonly List<string> targetClasses = new List<string>( 0 );
@@ -162,6 +166,16 @@ public NativeShare AddFile( Texture2D texture, string createdFileName = "Image.p
 		return this;
 	}
 
+	public NativeShare AddEmailRecipient( string emailAddress )
+	{
+#if UNITY_EDITOR || UNITY_ANDROID
+		if( !string.IsNullOrEmpty( emailAddress ) && !emailRecipients.Contains( emailAddress ) )
+			emailRecipients.Add( emailAddress );
+#endif
+
+		return this;
+	}
+
 	public void Share()
 	{
 		if( files.Count == 0 && subject.Length == 0 && text.Length == 0 && url.Length == 0 )
@@ -176,7 +190,7 @@ public void Share()
 		if( callback != null )
 			callback( ShareResult.Shared, null );
 #elif UNITY_ANDROID
-		AJC.CallStatic( "Share", Context, new NSShareResultCallbackAndroid( callback ), targetPackages.ToArray(), targetClasses.ToArray(), files.ToArray(), mimes.ToArray(), subject, CombineURLWithText(), title );
+		AJC.CallStatic( "Share", Context, new NSShareResultCallbackAndroid( callback ), targetPackages.ToArray(), targetClasses.ToArray(), files.ToArray(), mimes.ToArray(), emailRecipients.ToArray(), subject, CombineURLWithText(), title );
 #elif UNITY_IOS
 		NSShareResultCallbackiOS.Initialize( callback );
 		if( files.Count == 0 )

Plugins/NativeShare/README.txt

@@ -49,6 +49,7 @@ Simply create a new NativeShare object and customize it by chaining the followin
 - SetUrl( string url ): sets the shared url. On supported iOS apps, this url is used to generate a preview of the target webpage. Other iOS apps may append the url to the text or omit it. While sharing a file on iOS or while sharing anything on Android, the url is appended to the text (unless the text already contains the url)
 - AddFile( string filePath, string mime = null ): adds the file at path to the share action. You can add multiple files of different types. The MIME of the file is automatically determined if left null; however, if the file doesn't have an extension and/or you already know the MIME of the file, you can enter the MIME manually. MIME has no effect on iOS
 - AddFile( Texture2D texture, string createdFileName = "Image.png" ): saves the texture to Application.temporaryCachePath with the specified filename and adds the image file to the share action
+- AddEmailRecipient( string emailAddress ): auto-populates the recipients field of e-mail applications on Android platform. Has no effect on iOS
 - SetTitle( string title ): sets the title of the share dialog on Android platform. Has no effect on iOS
 - AddTarget( string androidPackageName, string androidClassName = null ): shares content on a specific application on Android platform. If androidClassName is left null, list of activities in the share dialog will be narrowed down to the activities in the specified androidPackageName that can handle this share action. Note that androidClassName, if provided, must be the full name of the activity (with its package). You can call this function multiple times. This function has no effect on iOS
 - SetCallback( ShareResultCallback callback ): invokes the callback function after the share action is completed. ShareResultCallback has the following signature: void ShareResultCallback( ShareResult result, string shareTarget )

package.json

@@ -1,7 +1,7 @@
 {
   "name": "com.yasirkula.nativeshare",
   "displayName": "Native Share",
-  "version": "1.4.6",
+  "version": "1.4.7",
   "documentationUrl": "https://github.com/yasirkula/UnityNativeShare",
   "changelogUrl": "https://github.com/yasirkula/UnityNativeShare/releases",
   "licensesUrl": "https://github.com/yasirkula/UnityNativeShare/blob/master/LICENSE.txt",