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class var sharedInstance : PusherManager {
        struct Static {
            static let instance : PusherManager = PusherManager()
        }
        return Static.instance;
    }

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class func countryNames() -> [String] {
        struct Static {
            static var instance: [String]?
        }
        if let names = Static.instance {
            return names
        }
        
        var names = [String]()
        for code in NSLocale.ISOCountryCodes() as [String] {

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-fno-objc-arc
Add -fobjc-arc to compiler flags under build phases to ARC files to make them compile correctly for non-ARC projects.

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//viewDidload
if ([self respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {
       [self prefersStatusBarHidden];
       [self performSelector:@selector(setNeedsStatusBarAppearanceUpdate)];
 } else {
      [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
 }
 
 
// Add this Method

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+ (id)objectForKey:(NSString *)key
{
    if ([key length] == 0) {
        return nil;
    }
    
    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:key];
    if (!data) {
        return nil;
    }

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// Indicate != nil instead of bool 
if navigationController {
}

if navigationController != nil {
}
            

// Use require keywork for require methods

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 NSArray* array = [UIApplication sharedApplication].windows;
 for(id windowObject in array){
        NSString* class = NSStringFromClass([windowObject class]);
        if([class isEqualToString:@"UITextEffectsWindow"]){
            UIWindow* keyboardWindow = (UIWindow*)windowObject;
            keyboardWindow.windowLevel = self.view.window.windowLevel+1;
        }
 }

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class LINJSONHelper {
    class func jsonStringWithObject(obj: AnyObject) -> String? {
        var error: NSError?
        let jsonData  = NSJSONSerialization.dataWithJSONObject(obj, options: NSJSONWritingOptions(0), error: &error)
        if error != nil {
            println("Error creating JSON data: \(error!.description)");
            return nil
        }
        
        return NSString(data: jsonData, encoding: NSUTF8StringEncoding)

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private func addListBubbleCellsWithCount(count: Int) {
        var contentOffset = self.tableView.contentOffset
        
        UIView.setAnimationsEnabled(false)
        
        var indexPaths = [NSIndexPath]()
        var heightForNewRows: CGFloat = 0
        
        for var i = 0; i < count; i++ {
            let indexPath = NSIndexPath(forRow: i, inSection: 0)

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func handleKeyboardWillShowNotification(notification: NSNotification) {
        if self.inputContainerViewBottomLayoutGuideConstraint.constant == 0 {
            keyboardWillChangeFrameWithNotification(notification, showKeyboard: true)
            scrollBubbleTableViewToBottomAnimated(true)
        }
    }
    
    func handleKeyboardWillHideNotification(notification: NSNotification) {
        if self.inputContainerViewBottomLayoutGuideConstraint.constant > 0 {
            keyboardWillChangeFrameWithNotification(notification, showKeyboard: false)