You can just drag out a Bar Button Item and drop it on the right end of the view controller&#39;s navigation bar:

![enter image description here](http://i.stack.imgur.com/XYRAt.gif)

As of Xcode 6, it looks like the navigation item on the navigation bar is no longer created automatically.

You&#39;ll need to drag out a Navigation Item onto the navigation bar first before you can drag out a Bar Button Item (as detailed in Rob&#39;s answer) to add to the navigation item.

We&#39;re trying to deploy a war file with Jenkins, but nothing seems to happen.

The project is built successfully, and we&#39;re using Jenkins deploy plugin. It is configured with the following options:

![auto deploy plugin][1]

Post steps are set to &quot;run regardless of build result&quot;.

I have checked that the credentials are correct, as I can acces the manager page in my browser.

Here is the last part that Jenkins (Maven) outputs:

    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD SUCCESS
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 1:24.506s
    [INFO] Finished at: Tue Feb 14 12:10:45 UTC 2012
    [INFO] Final Memory: 22M/52M
    [INFO] ------------------------------------------------------------------------
    channel stopped
    Finished: SUCCESS

I can also change WAR/EAR file to something that doesn&#39;t exist, and it will not give me errors, which is kind of strange. What am I doing wrong here?

  [1]: http://i.stack.imgur.com/Gv6RL.png

Jenkins auto deploy tomcat 7

This is my first time trying to use the XMLRPC::Client library to interact with a remote API and I keep receiving this error:

    warning: peer certificate won&#39;t be verified in this SSL session

Searching around I&#39;ve found loads of people that have gotten that error. Usually it&#39;s with self-signed certificates and they just want it to go away, so they do something dirty like monkey patch the way XMLRPC::Client is opening it&#39;s http session.

I first assumed this was simply the client not caring whether the certificate was valid or not, so I continued my search and came across [this gem][1]. It simply forces verification of all SSL certificates and throws a hard error if it&#39;s not able too. This was exactly what I wanted. I included it, ran the code again and now I&#39;m getting this:

    OpenSSL:SSL::SSLError:
      SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B:
      certificate verify failed

Of course! The certificate is bad! But I double check just to make sure with openssl&#39;s builtin s_client like so:

    openssl s_client -connect sub.example.com:443

and what do I get:

    CONNECTED(00000003)
    ---
    Certificate chain
    &lt;snip&gt;
    Verify return code: 0 (ok)

So now we get to my question. OpenSSL (the command line version) says the certificate is good. OpenSSL (the Ruby library) disagrees. All of my web browsers say the certificate is good.

A few additional details that might be of use. The certificate is a wildcard but is valid for the domain. The openssl s_client was run on the same machine seconds apart from the Ruby code. This is Ruby 1.8.7 p357 which is installed with RVM.

Does Ruby use something other than the CA bundle provided by the host OS? Is there a way to tell Ruby to use a specific CA bundle or the system one?


  [1]: https://github.com/jamesgolick/always_verify_ssl_certificates

Why is Ruby unable to verify an SSL certificate?

At the moment, I&#39;ve been adding navigation buttons like follows:

    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@&quot;Add&quot;
                                                                              style:self.editButtonItem.style 
                                                                             target:self
                                                                             action:@selector(doneButtonPressed)];

It seems a bit silly to not add them through storyboard, but I can&#39;t find a way to do so.  Is there one that I&#39;m missing?

Can you add buttons to navigation bars through storyboard?

At the moment, I've been adding navigation buttons like follows:
<pre><code class="hljs language-objectivec">self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Add"
 style:self.editButtonItem.style 
 target:self
 action:@selector(doneButtonPressed)];
</code></pre>
It seems a bit silly to not add them through storyboard, but I can't find a way to do so. Is there one that I'm missing?

I have this regex working when I test it in PHP but it doesn&#39;t work in Objective C:

    (?:www\.)?((?!-)[a-zA-Z0-9-]{2,63}(?&lt;!-))\.?((?:[a-zA-Z0-9]{2,})?(?:\.[a-zA-Z0-9]{2,})?)

I tried escaping the escape characters but that doesn&#39;t help either. Should I escape any other character?

This is my code in Objective C:

    NSMutableString *searchedString = [NSMutableString stringWithString:@&quot;domain-name.tld.tld2&quot;];
    NSError* error = nil;
    
    NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern:@&quot;(?:www\\.)?((?!-)[a-zA-Z0-9-]{2,63}(?&lt;!-))\\.?((?:[a-zA-Z0-9]{2,})?(?:\\.[a-zA-Z0-9]{2,})?)&quot; options:0 error:&amp;error];
    NSArray* matches = [regex matchesInString:searchedString options:0 range:NSMakeRange(0, [searchedString length])];
    for ( NSTextCheckingResult* match in matches )
    {
        NSString* matchText = [searchedString substringWithRange:[match range]];
        NSLog(@&quot;match: %@&quot;, matchText);
    }

-- UPDATE --

This regex returns (in PHP) the array with values &quot;domain-name&quot; and &quot;tld.tld2&quot; but in Objective C i get only one value: &quot;domain-name.tld.tld2&quot;

-- UPDATE 2 --

This regex extracts &#39;domain name&#39; and &#39;TLD&#39; from the string:

 - domain.com = (domain, com)
 - domain.co.uk = (domain, co.uk)
 - -test-domain.co.u = (test-domain, co)
 - -test-domain.co.uk- = (test-domain, co.uk)
 - -test-domain.co.u-k = (test-domain, co)
 - -test-domain.co-m = (test-domain)
 - -test-domain-.co.uk = (test-domain)

it takes the valid domain name (not starting or ending with &#39;-&#39; and between 2 and 63 characters long), and up to two parts of a TLD if the parts are valid (at least two characters long containing only letters and numbers)

Hope this explanation helps.

How to write regular expressions in Objective C (NSRegularExpression)?

I want to use a view throughout multiple viewcontrollers in a storyboard. Thus, I thought about designing the view in an external xib so changes are reflected in every viewcontroller. But how can one load a view from a external xib in a storyboard and is it even possible? If thats not the case, what other alternatives are availble to suit the situation abouve?

Load view from an external xib file in storyboard

At a point in my code fileExistsAtPath: is returning NO for files that I have confirmed exist. I&#39;ve been scratching my head at this and can&#39;t figure out why its not working, so changed it to this code as this directory absolutely exists but if it doesn&#39;t gets created anyway.

    NSError* err = nil;
    NSURL *dir = [[NSFileManager defaultManager] URLForDirectory:NSApplicationSupportDirectory
                                                           inDomain:NSUserDomainMask
                                                  appropriateForURL:nil   
                                                             create: YES
                                                              error:&amp;err];
    BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:[dir absoluteString]];

After running this code the application directory folder exists and err is 0, yet exists is NO.

How can this be?

TIA



fileExistsAtPath: returning NO for files that exist

I was having problems modifying a view inside a thread. I tried to add a subview but it took around 6 or more seconds to display. I finally got it working, but I don&#39;t know how exactly. So I was wondering why it worked and what&#39;s the difference between the following methods:

1. This worked -added the view instantly:
```
dispatch_async(dispatch_get_main_queue(), ^{
    //some UI methods ej
    [view addSubview: otherView];
}
```
2. This took around 6 or more seconds to display:
```
[viewController performSelectorOnMainThread:@selector(methodThatAddsSubview:) withObject:otherView
    waitUntilDone:NO];
```

3. `NSNotification` methods -  took also around 6 seconds to display the observer was in the viewController I wanted to modify paired to a method to add a subview.
```
[[NSNotificationCenter defaultCenter] postNotificationName:
 @&quot;notification-identifier&quot; object:object];
```

For reference these were called inside this `CompletionHandler` of the class `ACAccountStore`.

    accountStore requestAccessToAccountsWithType:accountType withCompletionHandler:^(BOOL granted, NSError *error) {
        if(granted) {
            // my methods were here
        }
    }

What&#39;s the difference between performSelectorOnMainThread: and dispatch_async() on main queue?

Alright, this problem has been driving me nuts. 

It takes roughly 3-4 seconds for the keyboard to pop up after I touch my `UITextField`. This only occurs on the first time the keyboard pops up since the app launched, afterwards the animation starts instantly.

At first I thought it was problem of loading too many images, or my `UITableView`, but I just created a brand new project with only a `UITextField`, and I still experience this problem. I&#39;m using iOS 5, Xcode ver 4.2, and running on an iPhone 4S.

This is my code:

    #import &quot;ViewController.h&quot;
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        
        UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(20, 20, 280, 30)];
        textField.borderStyle = UITextBorderStyleRoundedRect;
        textField.delegate = self;
        [self.view addSubview:textField];
    }
    
    @end

Is this a common problem for all apps?

Right now, the only way I can make it somewhat better is by having `textField` become/resign first responder in `viewDidAppear`, but that doesn&#39;t solve the problem entirely - it just loads the delay onto when the view loads instead. If I click on `textField` immediately when the view loads, I still get the problem; if I wait 3-4 seconds after the view loads before touching the textField, I don&#39;t get the delay.

Content Type	Original Author	Original Content on Stackoverflow
Question	sapi	View Question on Stackoverflow
Solution 1 - Ios	rob mayoff	View Answer on Stackoverflow
Solution 2 - Ios	Ken Toh	View Answer on Stackoverflow

Can you add buttons to navigation bars through storyboard?

Ios Problem Overview

Ios Solutions

Solution 1 - Ios

Solution 2 - Ios

Why is Ruby unable to verify an SSL certificate?

Jenkins auto deploy tomcat 7

Attributions