Trims white space around URLs

* Fixes issue where they would not open if their was any white space around them.

Author: jkasten2

iOS_SDK/OneSignalSDK/Source/OneSignal.m

@@ -1287,9 +1287,10 @@ + (void)handleNotificationOpened:(NSDictionary*)messageDict
 }
 
 + (void)launchWebURL:(NSString*)openUrl {
-
-    if (openUrl && [OneSignalHelper verifyURL:openUrl]) {
-        NSURL *url = [NSURL URLWithString:openUrl];
+    NSString* toOpenUrl = [OneSignalHelper trimURLSpacing:openUrl];
+    
+    if (toOpenUrl && [OneSignalHelper verifyURL:toOpenUrl]) {
+        NSURL *url = [NSURL URLWithString:toOpenUrl];
         // Give the app resume animation time to finish when tapping on a notification from the notification center.
         // Isn't a requirement but improves visual flow.
         [OneSignalHelper performSelector:@selector(displayWebView:) withObject:url afterDelay:0.5];

iOS_SDK/OneSignalSDK/Source/OneSignalHelper.h

@@ -78,6 +78,7 @@
 + (NSString*)hashUsingMD5:(NSString*)string;
 + (void)addAttachments:(NSDictionary*)attachments toNotificationContent:(id)content;
 + (void)addActionButtons:(NSArray*)buttonsPayloadList toNotificationContent:(id)content;
++ (NSString*)trimURLSpacing:(NSString*)url;
 
 #pragma clang diagnostic pop
 @end

iOS_SDK/OneSignalSDK/Source/OneSignalHelper.m

@@ -813,9 +813,10 @@ + (void)addAttachments:(NSDictionary*)attachments toNotificationContent:(UNMutab
     NSMutableArray *unAttachments = [NSMutableArray new];
 
     for(id key in attachments) {
-        NSString* URI = [attachments valueForKey:key];
+        NSString* URI = [OneSignalHelper trimURLSpacing:[attachments valueForKey:key]];
+        
         NSURL* nsURL = [NSURL URLWithString:URI];
-
+        
         // Remote media attachment */
         if (nsURL && [self isWWWScheme:nsURL]) {
             // Synchroneously download file and chache it
@@ -1078,6 +1079,13 @@ + (NSString*)hashUsingMD5:(NSString*)string {
     return output;
 }
 
++ (NSString*)trimURLSpacing:(NSString*)url {
+    if (!url)
+        return url;
+    
+    return [url stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+}
+
 #pragma clang diagnostic pop
 #pragma clang diagnostic pop
 #pragma clang diagnostic pop