Sharing on Facebook, Twitter and Google+

[FIXED]     Font of navbar.
[FIXED]     A few compile fixes.
[IMPROVED]  Made properties nonatomic.
[ADDED]     Support for facebook, twitter and google+ sharing.

External/google-plus-ios-sdk/OpenSource/GTL/GTLErrorObject.m

@@ -0,0 +1,78 @@
+/* Copyright (c) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+//  GTLErrorObject.m
+//
+
+#import "GTLErrorObject.h"
+#import "GTLService.h"
+
+@implementation GTLErrorObject
+
+@dynamic code;
+@dynamic message;
+@dynamic data;
+
++ (NSDictionary *)arrayPropertyToClassMap {
+  NSDictionary *map = [NSDictionary dictionaryWithObject:[GTLErrorObjectData class]
+                                                  forKey:@"data"];
+  return map;
+}
+
+- (NSError *)foundationError {
+  NSMutableDictionary *userInfo;
+
+  // This structured GTLErrorObject will be available in the error's userInfo
+  // dictionary
+  userInfo = [NSMutableDictionary dictionaryWithObject:self
+                                                forKey:kGTLStructuredErrorKey];
+
+  NSString *reasonStr = self.message;
+  if (reasonStr) {
+    // We always store an error in the userInfo key "error"
+    [userInfo setObject:reasonStr
+                 forKey:kGTLServerErrorStringKey];
+
+    // Store a user-readable "reason" to show up when an error is logged,
+    // in parentheses like NSError does it
+    NSString *parenthesized = [NSString stringWithFormat:@"(%@)", reasonStr];
+    [userInfo setObject:parenthesized
+                 forKey:NSLocalizedFailureReasonErrorKey];
+  }
+
+  NSInteger code = [self.code integerValue];
+  NSError *error = [NSError errorWithDomain:kGTLJSONRPCErrorDomain
+                                       code:code
+                                   userInfo:userInfo];
+  return error;
+}
+
++ (GTLErrorObject *)underlyingObjectForError:(NSError *)foundationError {
+  NSDictionary *userInfo = [foundationError userInfo];
+  GTLErrorObject *errorObj = [userInfo objectForKey:kGTLStructuredErrorKey];
+  return errorObj;
+}
+
+@end
+
+@implementation GTLErrorObjectData
+@dynamic domain;
+@dynamic reason;
+@dynamic message;
+@dynamic location;
+@end
+
+