If you just want to copy existing files into your application bundle&#39;s Resources folder (which on iPhone is just the inside of the .app bundle), do the following:

* Drag the folder you want copied into the Files and Folders listing of your xcode project.
* From the sheet that pops up asking you if you want to add the files to a target, change the radio button to &quot;Create folder references for any added folders&#39;.

The folder you dragged in and all of its contents will be copied verbatim during building.

Under the target for your application, you have to add a Copy Files phase. Then you can specify a sub-directory within the app bundle that you want the file copied to. There will be a bunch of default directories for specific things (like resources and frameworks and such), but you can choose any directory you want. When your application bundle is built, the files you specify will be copied to the location within your bundle.

Is there anyway I can create a not in clause like I would have in SQL Server in *Linq to Entities*?

&quot;NOT IN&quot; clause in LINQ to Entities

After posting [this question][1] and reading [that one][2] I realized that it is very important to know if a method is supposed to return null, or if this is considered an error condition and an exceptions should be thrown. There also is a nice discussion when to [return ‘null’ or throw exception ][3].

**I&#39;m writing a method and I already know if I want to return null or throw an exception, what is the best way to express my decision, in other words, to document my contract?**

Some ways I can think of:

  - Write it down in the specs / the documentation (will anyone read it?)
  - Make it part of the method name (as I suggested [here][4])
  - assume that every method that *throws* an exception will *not* return null, and every one that does &#39;not&#39; throw *might* return null.

I&#39;m mainly talking about java, but it might apply to other languages, too: Why is there a formal way to express if exceptions will be thrown (the `throws` keywords) but no formal way to express if null might be returned? 

Why isn&#39;t there something like that:

    public notnull Object methodWhichCannotReturnNull(int i) throws Exception
    {
        return null; // this would lead to a compiler error!
    }



Summary and Conclusion
----------------------

There are many ways to express the contract:

  - If your IDE supports it (as IntelliJ), it&#39;s best to use an annotation like `@NotNull` because it is visible to the programmer and can be used for automated compile time checking. There&#39;s a [plugin for Eclipse][5] to add support for these, but it didn&#39;t work for me.
  - If these are not an option, use custom Types like `Option&lt;T&gt;` or `NotNull&lt;T&gt;`, which add clarity and at least runtime checking.
  - In any way, documenting the contract in the JavaDoc never hurts and sometimes even helps.
  - Using method names to document the *nullability* of the return value was not proposed by anyone but me, and though it might be very verbose und not always useful, I still believe sometimes it has its advantages, too.

  [1]: https://stackoverflow.com/questions/410890/how-to-trace-a-nullpointerexception-in-a-chain-of-getters &quot;How to trace a NullPointerException in a chain of getters?&quot;
  [2]: https://stackoverflow.com/questions/271526/How-to-avoid-null-statements-in-java &quot;how to avoid null statements in java?&quot;
  [3]: https://stackoverflow.com/questions/175532/return-null-or-throw-exception
  [4]: https://stackoverflow.com/questions/175532/return-null-or-throw-exception#411400 &quot;answer on &#39;Return null or throw exception&#39;&quot;
  [5]: http://groups.csail.mit.edu/pag/jsr308/eclipse/

How to show if a method may return null

Is there a way to have directories within an `.app`?

At the moment if I add a file into `Xcode`, regardless of what Group hierarchy it is in, the file always lands in a flat filesystem within my application bundle.


Subdirectories within an iOS application

<p>Is there a way to have directories within an <code>.app</code>?</p>
<p>At the moment if I add a file into <code>Xcode</code>, regardless of what Group hierarchy it is in, the file always lands in a flat filesystem within my application bundle.</p>


Is it possible to launch any arbitrary iPhone application from within another app?, **For example** *in my application if I want the user to push a button and launch right into the Phone app (close the current app, open the Phone app)*.

 would this be possible? I know this can be done for making phone calls with the tel URL link, but I want to instead just have the Phone app launch without dialing any specific number.  

Launch an app from within another (iPhone)

&gt; **Possible Duplicate:**  
&gt; [Manually drawing a gradient in iPhone apps?](https://stackoverflow.com/questions/227005/manually-drawing-a-gradient-in-iphone-apps)  

&lt;!-- End of automatically inserted text --&gt;

My application needs to display text in either a `UIView` or `UILabel` but the back ground must be a gradient as opposed to a true `UIColor`. Using a graphics program to create desired look is no good as the text may vary depending on data returned from a server.

Does anyone know the quickest way to tackle this?
Your thoughts are greatly appreciated.


Gradients on UIView and UILabels On iPhone

We are looking for a Wireshark-like tool to use on the iPhone to test a 3rd party application before partnering with the 3rd party.  Any suggestions?

How do you monitor network traffic on the iPhone?

Is there a way to determine the device running an application. I want to distinguish between `iPhone` and `iPod Touch`, if possible.

Determine device (iPhone, iPod Touch) with iOS

I&#39;m writing an iPhone app.  It&#39;s already been published, but I would like to add a feature where its version number is displayed.

I&#39;d rather not have to do this manually with each version I release... 

Is there a way in objective-C to find out what the version is of my app?



How can my iphone app detect its own version number?

What&#39;s the correct way to pass a bundle to the activity that is being launched from the current one? Shared properties?

Passing a Bundle on startActivity()?

I&#39;m in the process of converting my projects to OSGI bundles using maven and eclipse. Maven builds the stuff just fine, only I get the above error now within Eclipse. How can I find out which project causes this? Is there a special view or something? How can this happen, I would expect that maven can detect cyclic dependencies as well?

**Update**

Ok, I found something 
&lt;a href=&quot;http://www.eclipsezone.com/eclipse/forums/t71727.html&quot;&gt;here&lt;/a&gt;
and
&lt;a href=&quot;http://www.eclipsezone.com/eclipse/forums/t71727.html&quot;&gt;here&lt;/a&gt;

Could this be caused by the felix maven-bundle-plugin which does for each export also an import?

A cycle was detected in the build path of project xxx - Build Path Problem

I can find a way to send parameters to my activity from my notification.

I have a service that creates a notification. When the user clicks on the notification I want to open my main activity with some special parameters. E.g an item id, so my activity can load and present a special item detail view. More specific, I&#39;m downloading a file, and when the file is downloaded I want the notification to have an intent that when clicked it opens my activity in a special mode. I have tried to use `putExtra` on my intent, but cant seem to extract it, so I think I&#39;m doing it wrong.


Code from my service that creates the Notification:

            // construct the Notification object.
         final Notification notif = new Notification(R.drawable.icon, tickerText, System.currentTimeMillis());


		final RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.custom_notification_layout);
		contentView.setImageViewResource(R.id.image, R.drawable.icon);
		contentView.setTextViewText(R.id.text, tickerText);
		contentView.setProgressBar(R.id.progress,100,0, false);
		notif.contentView = contentView;		
		
		Intent notificationIntent = new Intent(context, Main.class);
		notificationIntent.putExtra(&quot;item_id&quot;, &quot;1001&quot;); // &lt;-- HERE I PUT THE EXTRA VALUE
		PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
		notif.contentIntent = contentIntent;
        
        nm.notify(id, notif);


Code from my Activity that tries to fetch the extra parameter from the notification:


     public void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
    	
        setContentView(R.layout.main);

        
        Bundle extras = getIntent().getExtras();
        if(extras != null){
        	Log.i( &quot;dd&quot;,&quot;Extra:&quot; + extras.getString(&quot;item_id&quot;) );
        }


The extras is always null and I never gets anything into my log.

Btw... the `onCreate` is only run when my activity starts, if my activity is already started I  also want to collect the extras and present my activity according to the item_id I receive.


Any ideas?

How to send parameters from a notification-click to an activity?

I have an array of integers in the activity A:

    int array[] = {1,2,3};


And I want to send that variable to the activity B, so I create a new intent and use the putExtra method:

    Intent i = new Intent(A.this, B.class);
    i.putExtra(&quot;numbers&quot;, array);
    startActivity(i);



In the activity B I get the info:

    Bundle extras = getIntent().getExtras();
    int arrayB = extras.getInt(&quot;numbers&quot;);



But this is not really sending the array, I just get the value &#39;0&#39; on the arrayB. I&#39;ve been looking for some examples but I didn&#39;t found anything so.

Sending arrays with Intent.putExtra

I need to pass a reference to the class that does the majority of my processing through a bundle.

The problem is it has nothing to do with intents or contexts and has a large amount of non-primitive objects. How do I package the class into a parcelable/serializable and pass it to a `startActivityForResult`?

Content Type	Original Author	Original Content on Stackoverflow
Question	gak	View Question on Stackoverflow
Solution 1 - Iphone	Jason Harris	View Answer on Stackoverflow
Solution 2 - Iphone	Jason Coco	View Answer on Stackoverflow

Subdirectories within an iOS application

Iphone Problem Overview

Iphone Solutions

Solution 1 - Iphone

Solution 2 - Iphone

How to show if a method may return null

"NOT IN" clause in LINQ to Entities

Attributions