iphone-sdk-3.0

问题 I'm using subclassed UIAlertView window as a login prompt in my application (I know it's against Apple guidelines but it will not be submitted to the appstore so it's not a problem). The code to add text fields and position the window on screen looks like this: - (id)initWithTitle:(NSString *)title delegate:(id)delegate { if (self = [super initWithTitle:title message:@"\n\n\n" delegate:delegate cancelButtonTitle:@"Cancel" otherButtonTitles:@"Login", nil]) { UITextField *loginTF = [

问题 I am having multiple values in the string Here is the example of my string str1 = @"20AB" str2 = @"298C30:2FC0A0:2FC09C:FFFFFFFF:2FDFCD34:00" str3 = @"4ffd565372df51089f2c824526f4f95a13daa867" str4 = hexa(binary(str1 + str2 +str3)) i.e. I need to convert the strings to Binary and then to Hexa decimal and then concat all 3 strings in a single string. Please help me out how to do so. thanks in advance 回答1: I don't know much of Obj-C or the iPhone SDK, but in C your solution would be along these

问题 i want to show leaderbord in my own game ....i am using following method for that but noting happen ... i am confuse with rootview controller as my game is developed in cocos2d so there is nothing like dat :( // Leaderboards -(void) showLeaderboard { if (isGameCenterAvailable == NO) return; GKLeaderboardViewController* leaderboardVC = [[[GKLeaderboardViewController alloc] init] autorelease]; if (leaderboardVC != nil) { leaderboardVC.leaderboardDelegate = self; [self presentViewController

问题 My SDK version is "Latest" which means 4.2 and the other thing is set to 3.0. App Loader is giving me this error. Apple is not currently accepting applications built with this version of the SDK. XCode Version 3.2.5 Any clues? 回答1: Possibly try moving the deployment target (other thing) to 3.1 instead of 3.0. XCode 3.2.5 is the latest version, you could also try a re-install if nothing else works. 回答2: Set your Base SDK to Latest iOS and your Deployment Target to 3.0. Make sure you do a Clean

问题 I'm displaying custom images on a map (instead of the default pins) using the code below. However, when I tap on an item (and the callout appears), the image reverts to the default red pin. How can I keep my custom image, even when the callout is displayed? - (MKAnnotationView *) mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation { MKPinAnnotationView *pinAnnotation = nil; if (annotation != mapView.userLocation) { static NSString *pinID = @"mapPin"; pinAnnotation =

问题 Please see the link below. http://itunes.apple.com/app/id383298204?mt=8 There are screen shots of showpick application. In that there is a collect button which is some what impossible to implement under ui tab bar. Can someone help me to figure it out how they have implemented it? Is that an actual UITabBar? Thank you 回答1: I figured out a workaround. I basically add a dummy controller for the middle entry of the UITabBarController. And in viewDidLoad I add a button to the UITabBar like so:

问题 I am creating an app which requires internet. I want to use reachability class in my project and I want to detect if user has no internet connection whatever the technique is either wifi, Cellular. I want a step by step guide for this. 回答1: You can start with Reachability sample application. There is also some entries on SO that are about the subject. 来源： https://stackoverflow.com/questions/2033042/how-to-use-reachability-class-to-detect-network-status

问题 I’ve installed Snow Leopard, have Xcode 3.2 and 3.0 iPhone SDK. I want my applications to run on 2.2.1, but the SDK is nowhere to be found in Xcode. I’ve set the deploy target to 2.2.1, but still I cannot be sure I am not using any 3.0-isms. (I’ve sent a sample application to my friend who still has 2.2.1 and it does not run, so it looks I really do use some 3.0 specific API.) How can make sure that my applications will run on 2.2.1? (Simulator also lists only 3.0 as version option.) I’d hate

问题 I'm using Matt Gallagher's AudioStreamer to play MP3s over HTTP. I need to know the duration of the song and the ID3 tags. Is it possible to implement this in the AudioStreamer, and how? 回答1: From his Docs: Limited scope One point should be clarified before I continue: this class is intended for streaming audio. By streaming, I don't simply mean "an audio file transferred over HTTP". Instead, I mean a continuous HTTP source without an end that continues indefinitely (like a radio station, not

问题 Kindly get me the limits of following things in sqlite of iphone No of rows that can be created Maximum size of the database per app. 回答1: There is no hard limit, except available Flash storage on the phone. The number of rows is limited to 9,223,372,036,854,775,807 (because rowid is 64 bits wide), which is essentially unlimited... 来源： https://stackoverflow.com/questions/3080084/maximum-size-of-a-sqlite-db-per-iphone-app