iphone

Good reasons why to not use XIB files?

Are there any good reasons why I should not use XIB / NIB files with an highly customized UI and extensive animations and super low memory footprint needs? As a beginner I started with XIB. Then I figured out I couldn't do just about everything in them. It started to get really hard to customize things the way I wanted them to be. So at...

One table view cell/row bigger than others? (iphone, cocoa-touch)

I know it is possible to set the height of all rows in a UITable but is it possible to set one row to be bigger than the others. For example when the user touches on the cell with 2 fingers I want the cell to expand and show a description. But only that cell. Is that possible without overlapping the cells below it? ...

Saving data in custom class via AppDelegate

I can't seem to save data to a custom instance object in my AppDelegate. My custom class is very simple and is as follows: Person.h ... @interface Person : NSObject { int _age; } - (void) setAge: (int) age; - (int) age; @end Person.m #import "Person.h" @implementation Person - (void) setAge:(int) age { _age = age; } - (in...

NSCharacterSet: How do I add "_" to alphanumericCharacterSet text restriction?

Building an NSCharacter set to restrict a UITextField for entering user names. I want the user to be able to also enter an underscore (so [A-Za-z0-9_]) but alphanumericCharacterSet does not include it. Is there a way to specify a range like that in short form? I see + (id)characterSetWithRange:(NSRange)aRange, but I'm not really understa...

iTunes Connect: Excluding iPad From Supported Devices

I have just uploaded my first app to iTunes Connect and noticed that my list of supported devices is appearing as follows... Device Requirements : Compatible with iPhone, iPod touch, and iPad. I've developed specifically for the iPhone and iPod Touch and have not yet done any testing on the iPad simulator. I therefore don't want the...

How to update SQLite DB on iPhone app update?

I currently have an iPhone app in the iTunes app store that uses a SQLite database as a datastore. The user can sync the app against a web service and data that is returned is then stored in the SQLite database. The user can also insert new items into the database and sync their changes back up to the web service. When a connection is o...

dismissModalViewControllerAnimated: crashes in Simulator but not on phone

I'm doing the following: [self.parentViewController dismissModalViewControllerAnimated:YES] This code fails using the Simulator but works with no issues on the phone itself. The Simulator's console shows no erros. I used NSLog statements to pinpoint this line of code as the culprit. When running on the phone, however, the console(...

Which JavaScript Libraries do not rely on a document and navigator object?

I'm currently looking for some libraries which might help me during iPhone Development using Appcelerator Titanium. I've heard that since version 1.0 it isn't dependant on webkit anymore and it makes app-development more exiting of course, please correct me if i'm wrong. As many people out there i love Javascript Frameworks such as JQuer...

What are some methods to debug Javascript inside of a UIWebView?

I'm trying to figure out why something with Javascript isn't working inside of a UIWebView. To my knowledge, there is no way to set a breakpoint inside of XCode for a js file. No problemo, I'll just go back to 2004 and use alert statemen-- oh wait they don't seem to work inside of a UIWebView either! The only thing I could think of is b...

iPodMusicPlayer doesn't send notifications, if it is created in background

If iPodMusicPlayer is created in background, then I doesn't send notifications about playback state changes. Here is code: - (void)initMusicPlayer { musicPlayer = [MPMusicPlayerController iPodMusicPlayer]; NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter]; [notificationCenter addObserver:self ...

Objective-C Basic class related question, retaining the value of a specific object using a class file

Members, scholars, code gurus. My background is far from any computer programming thus my question may seems basic and somewhat trivial to you. Nevertheless it seems that I can't put my head around it. I have googled and searched for the answer, just to get myself confused even more. With that, I would kindly ask for a simple explanation...

iPhone:(Three20)Unselect (Unhiglight) TTTabItem dynamically?

Hello friends, I have four TabBarItem (TTTabItem) in a TabBar (TTTabBar). In one case, i want to remove the TabBarItem selection from any of the four TabBarItems (TTTabItem) . i.e., the complete TabBar will not show any TabBarItems selected. Can i achieve it? I tried the following, [_tabBar1 setSelectedTabItem:nil]; But it is c...

Uploading XML with NSInputStream Iphone....

Hi, I have to upload XML string to server & the Web service expect it in body stream part of the http request. So i am allocating the NSInputstream instance with xml data & then setting it the part of the http string but it uploading the stream body NULL & in my code if check the Stream status, it gives error & size null, Could you let m...

Remove tab from UITabBar without UITabBarController

I'm using a UITabBar without a controller. I want to remove tabs from the UITabBar if certain conditions are met. For example, my UITabBar has 4 tabs set up in interface builder. If the scores module is not enabled at compile time, it should remove the scores tab. // defined in IB #define kTabScores 1 UITabBar *_tabBar; // in viewDi...

set Image to Button

Hello all, Could somebody help me a little bit with my issue below? When I call the myFunction, images which I want to set to buttons appear after 2 sec simultaneously, not one by one with delay of 0.5 sec. More info: generatedNumbers is array with four elements of NSNumber (4,1,3,2) buttons are set in UIView via IB and are tagged...

touchesBegan for UITable's Cell

How can I use touchesbegan in a table's cell without having to subclass a whole cell. Something like addTarget..... which is available for a UIButton? (in vb.net this would be like AddHandler I think) ...

Validating UITextField input and displaying error

What's the best practice for validating user input in a UITextField and displaying error? I tried performing checks inside textFieldShouldReturn and textFieldShouldEndEditing and popping up an error box when userever inputted invalid content. However, during testing, the popup from textFieldShouldEndEditing is getting invoked multiple ...

Disable UITableView vertical bounces when scrolling

How do I disable the bounce effect when vertically scrolling a UITableView? Right now if I scroll anywhere near the bottom, the view scrollbar bounces right up. I would like my UITableView to stay fixed at the scrolled-to position instead of bouncing back up. ...

Recording purchased products from in-app store for built-in products

I'm creating an in-app store for a few built-in features for my iphone app. Apple's documention recommends using the Application Preferences for storing this, but another question in this forum suggested using NSUserDefaults for another task for which Application Preferences was recommended (by Apple). Can someone clarify if, for in-ap...

Why should I use floats?

I mean, for pixel position, sizes, etc. It's not like I'll be making a rectangle that's 100 and a half pixels high. These might as well be integers. ...