I've been reading that if an collection "gets released" it releases all it's objects as well. On the other hand, I was also reading that a collection would release it's objects as soon as the collection gets deallocated. But the last thing may not always happen, as apple says. The system decides if it's good to deallocate or not. In mos...
Anyone have experience with drawing graphs on the iPhone? Looks like GraphKit isn't an option, so it's up to the programmer to either write his own library (using OpenGL, I guess), or an existing library. I can't seem to find any libraries that are confirmed to work on the iPhone. If you've written your own how did you go about it (op...
I've got a table view controller. Some of the rows of the table open new controllers to let the user enter more data or use pickers, etc. It's just like the built-in Calendar app. When the user taps "Save" on the second screen, I want the value from that screen to propagate back up into the table view controller, but I don't know how to ...
I am breaking the normal paradigm of a UINavigationController, or at least I'm trying to. We know that the Navigation Controller manages navigation via a stack. If I initialize with root controller A, navigate to B, and then Navigate to C, the Stack will look like - C/B/A. What I want to do though, is have a button on view C that will...
Hello, So, I can provide a picture in a bit if that would help clarify. I currently have a UITableView with alot of rows. The first row of the table is a search bar. Great, works fine. I've just added "plain" indexes, alphabetic headings before each section displayed in the table. I've also added right most index for jumping quickly ...
My projects reference static DLLs I've created. These projects are setup to make sure a corresponding build phase occurs. Meaning, if I build in simulator/debug, the static library will have an up to date simulator/debug build. I can verify my app works fine except for device/release. Is there a way to verify device/release? It's so...
I am trying to detect when the user is blowing into the mic of an iPhone. Right now I am using the SCListener class from Stephen Celis to call if ([[SCListener sharedListener] peakPower] > 0.99) in an NSTimer. However, this returns true sometimes when I'm not blowing. Anyone have any sample code to check if the user is blowing into th...
I want to know the basic steps for uploading my iPhone application to AppStore. How do I make a provisioning profile using a certificate and what other settings do I need to do to upload an application? I have just made an application on my iMac using Xcode and the iPhone SDK V2.2.1. What do I need to do for uploading it on the Apple i...
you think putting a Facebook icon in one of your screen grab list for submission would violate the apple sdk? ...
Hi I am using the following code for calling a method once my animation stops [UIView beginAnimations:@"swipe" context:NULL]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDelegate:self]; [UIView setAnimationDidStopSelector:@selector(transitionDidStop:finished:context:)]; [UIView setAnimationDuration:0.3...
Are there any open source projects in any language and other recourses that I need to look at in order to implement flv to 3gp conversion? It's better to be streaming, I mean return first portion of 3gp before last portion of flv is downloaded. Or are there any similar services already implemented - my goal is to have something like ht...
I feel that when I use NSArray, I might constraint myself some time in future. Are there any good reasons to prefer this "primitive" one instead of the "complex" one, which is mutable? ...
Hi, my app features a UITabBarController, which brings up some views. In the AppDelegate, I have to pass a (custom) model to it. Is the best way subclassing, or is there some better method? If I get it managed to have the model (e.g. Notes) in my UITabBarController, how do I access it out of the ViewControllers? Regards ...
Hi Guys.. I am trying to parse an XML file in which an element named "description" is as given below: <description><![CDATA[<a href='http://www.okmagazine.com/posts/view/13756/'><img src='http://www.okmagazine.com/img/photos/thumbs/27044' /></a><br />Ashlee and Pete take their tiny tot to FAO Schwarz in NYC for some new toys. <p...
I am wondering if the autorelease pool holds strong or weak references to the objects it holds. I would guess they are weak. When I add an object to an autorelease pool, it's just not immediately released but will be released when the pool is drained, right? So the references should be weak, i.e. the reference count (or retain count) kee...
In many Books and on many Sites I see -drain. Well, for an Autorelease Pool that sounds cool. But does it do anything other than an release? I would guess -drain just makes the Pool to -release all it's objects, without releasing the Pool itself. Just a guess. ...
So I have an Application that involves sending emails through an API. What I would like is that to have the same or similar to compose email interface available on the phone already. Unfortunately in all apples Goodness there is no view that just does that. [AppleComposeMailViewController alloc]; Would do the trick nicely...
Hi I am trying to reuse a sqlite statement in my application in a method. Here's the relevant code if(getsets_statement == nil){ const char *sql = "SELECT DISTINCT num,roll FROM mytable WHERE cls like ? and divname like ?"; if(sqlite3_prepare_v2(database, sql, -1, &getsets_statement, NULL) != SQLITE_OK){ NSAssert1(0, @"Error: Faile...
I am wondering how many there are, and where they are. As I have seen in a Stanford Vid, there is one autorelease pool installed in the event loop of an iPhone App. But I think I missed the point where exactly that is? And are there any other autorelease pools that I should know about? ...
Hi i've got the following code in a ViewController.h: #import <UIKit/UIKit.h> @interface CalcViewController : UIViewController { NSNumber* result; NSString* input; //NSString* input = @""; IBOutlet UITextField* display; } @property (retain) NSNumber* result; @property (retain) NSString* input; @property (nonatomic, re...