NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys: [UIFont fontWithName:@”Arial” size:22],UITextAttributeFont, [UIColor whiteColor], UITextAttributeTextColor, [UIColor grayColor], UITextAttributeTextShadowColor, [NSValue valueWithUIOffset:UIOffsetMake(-1, 0)], UITextAttributeTextShadowOffset,nil];
self.navigationController.navigationBar.titleTextAttributes = dic;