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  • download a complete folder

    - by Christian
    Hi, in my app I use several png-graphics. For the present version they are installed with the app in the folder "graphic". I made while programming. Now I need some more png-graphics and I don't want to make each time an app-update. How can I manage it, that the app is downloading the png-files from my webserver without knowing the name. I am looking for something which compares the files on the webserver with the files on the iPhone and if there is a new (or newer) file download it. Or is it possible to make an plist-file with the graphics??

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  • "modal" in apple documentation

    - by Crystal
    Apple uses "modal" often in their documentation. Like dismissModalViewController in their titles of methods, or documentation like: "The UIViewController class provides the fundamental view-management model for iPhone applications. The basic view controller class supports the presentation of an associated view in addition to basic support for managing modal views and rotating views in response to device orientation changes. Subclasses such as UINavigationController and UITabBarController provide additional behavior for managing complex hierarchies of view controllers and views." I'm not sure as to what context I should think of when I see modal in the names and documentation. Any thoughts? Thanks.

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  • App Crashes on Opening - PROBLEM

    - by Guest
    I have an app that keeps crashing as soon as it starts. Not sure why. I have image views and buttons in the main xib file. The main xib file is not mainwindow, it is firstview, so i changed it in the plist to the firstview. There may be something wrong with the xib file for firstview but it only has buttons and images and a view in the back. There are no warnings or errors when I run it, just Debugging Terminated when it crashes. PLEASE HELP

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  • JSON to display text -- Freezes UI

    - by Adam Storr
    Hi everyone, I currently have a very simple view which displays info from a JSON feed. The problem I'm facing is the few second pause I encounter once I press this tab. How can I make this view load instantly and then have the label.text areas load after? Preferable with an activity indicator? Should I use threads? Thanks in advance! Code: - (NSString *)stringWithUrl:(NSURL *)url { NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadRevalidatingCacheData timeoutInterval:30]; NSData *urlData; NSURLResponse *response; NSError *error; urlData = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error]; return [[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding]; } - (id)objectWithUrl:(NSURL *)url { SBJsonParser *jsonParser = [SBJsonParser new]; NSString *jsonString = [self stringWithUrl:url]; return [jsonParser objectWithString:jsonString error:NULL]; } - (NSDictionary *)downloadStats { id response = [self objectWithUrl:[NSURL URLWithString:@"http://www.example.com/JSON"]]; NSDictionary *feed = (NSDictionary *)response; return feed; [feed release]; } - (void)viewDidLoad { [super viewDidLoad]; [GlobalStatsScrollView setScrollEnabled:YES]; [GlobalStatsScrollView setContentSize:CGSizeMake(320, 360)]; } - (void)viewWillAppear:(BOOL)animated { NSLog(@"View appears"); // Download JSON Feed NSDictionary *feed = [self downloadStats]; totalproduced.text = [feed valueForKey:@"Produced"]; totalno.text = [feed valueForKey:@"Total"]; mostcommon.text = [feed valueForKey:@"Most Common"]; }

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  • UINavigationController's back button disappears?

    - by QAD
    I notice something strange happens to one of my view controller: the back button disappears, yet it's possible to go back to previous view controller by tapping the top left corner (i.e where the button should reside). In my entire file there's no line that set self.navigationItem.hidesBackButton to YES; also NSLog prints 0 as self.navigationItem.hidesBackButton's value in viewDidLoad. This occurs in both the simulator and real device. Any ideas?

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  • Changing tab indicators to a view in a tab widget?

    - by user246114
    Hi, I have a layout which requires a tab widget containing two tabs. Ideally I'd like to have each tab just be a completely flat colored rectangle, side by side. Almost exactly like the buttons you see at the top of this web page titled: "Questions" | "Tags" | "Users" | "Badges" | "Unanswered" but without the whitespace in between. I'd like to have the highlighted tab have a brighter background color. Is this possible using the tab widget? I know in 1.6+ there's a method to specify a view for the tabs themselves, but can I achieve this tight look, or should I just roll my own? Thanks

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  • Sending data between activities within my app?

    - by user246114
    Hi, I have a TabActivity, and the tabs point to sub activities. Is there a way I can send a 'message' to those child activities? I just want to pass a string across, not sure if this is possible. I have some data being fetched by the parent TabActivity, and the child tabs can't do anything useful until the parent is done fetching. When fetching is complete, I'd like to pass that data to the child activities so they can do something useful with it. Notmally I'd set the data to be passed in the Intent when first creating the activity, but in this case I can't do that. Thanks

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  • does != nil check for 0x0?

    - by 4thSpace
    I have a custom class and check that a property isn't 0x0 by doing: if(myinstance.someproperty != nil){ //do something } However, even if someproperty is 0x0, I still go into the conditional. someproperty is of another class type. Is there some other way to check this?

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  • When will [MFMailComposeViewController canSendMail] return NO

    - by pythonquick
    M iPhone app is using the MFMailComposeViewController class to send an in-app email with an attachment. The app will only attempt to display the mail composer dialog if the "canSendMail" method of class MFMailComposeViewController returns true (YES). Specifically, if the following method returns YES, it shows the mail composer, otherwise the user is presented with an error alert dialog stating that there are no email accounts set up on the device: - (BOOL)canDeviceSendEmail { Class mailClass = (NSClassFromString(@"MFMailComposeViewController")); return mailClass != nil && [mailClass canSendMail]; } A team of testers have reported that they get this error alert dialog, even when email accounts are set up on the device. The tester used an iPhone 3G with OS 3.1.3. Therefore the MFMailComposeViewController class must have existed, and the "canSendMail" method must have returned NO. My question is therefore: apart from the case when there are no email accounts set up on the device, in what other circumstances can the "canSendMail" method return NO? ~ Thanks

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  • Customized annotation problem

    - by user128647
    I want my custom UIView (.Xib View) to appear when user tabs on pins (not apple's callOutBubble) and in that UIView there should be a button which fires an IBAction on touched down event. Therefore I have added an AddObserver method to MKAnnotationView. which responds to touch events over pin in MKMapView. I have also added 3 buttons over that XIB view, which have also assigned IBActions. But when I run my application, buttons in the customized annotation view are not responding to IBAction (Touch Down). Why does this happen, and how can I fix it? I need to call a method when those 3 buttons are tabbed.

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  • How to hang up (disconnect, terminate,..) incomings call???

    - by Cesar Valiente
    "How do you hang up incoming calls (in Android of course)?" First, I know this question has been asked and answered several times, and the response is always "you can't". But if we look in the market we get a few applications (all private software, no access to the source code... :-( ) that do this action, such as CallFilter, Panda firewall and others... So... does somebody know how these apps do the hang up action, (or terminate, or disconnect or whatever you call it..)? And other question, if the first don't get a response.. does somebody know how send an incoming call to the voice mail? Of course, all questions are about how to do it programmatically. So with the voicemail question I know there's a flag in contacts that is used for that, but like I said, I'd like to know the programmatical way. Thanks all!

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  • Updating UILabel and UIButton immediately

    - by paul simmons
    Hi, In a project, I change a UILabel's text with setText, a UIButton's color and after that do a time consuming calculation, followed by an animation. However, the text's and color's change is reflected after the calculation is executed (and before the animation begins) however I want to reflect the changes immediately before calculation (as you guess it is a waiting text) How can I achieve this?

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  • Why is my view not resizing after rotating?

    - by E-Madd
    I'm only supporting the portrait orientation, but both the right-side-up and upside-down versions. Why do my subviews not resize appropriately? There's a status bar sized black space at the top of the view. If I change tabs and come back, it's corrected.

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  • iPhone app with UIWebView

    - by chaitanya
    Hi, I have a doubt in developing apps for iphone, Can I develop authentication page(with secure login id and pwd) through which I can load my webcontent. Does apple allow applications having login credentials or not? Can anyone please let me know this. Thanks in advance..

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  • crash happens when NSMutableArray is returned?

    - by senthilmuthu
    Hi, I have coded like that(that function will be called again and again), but the returned object gives "BAD ACCESS", the NSLog prints correct string, but toReturn sometimes(i called again and again) gives crashes..any help to alter this code - (NSMutableArray *)getAll:(NSString *)type { NSLog(@"Type: %@", type); NSMutableArray *toReturn = [[NSMutableArray alloc] initWithCapacity:0] ; rs = [db executeQuery:Query1]; while ([rs next]) { [toReturn addObject:[rs stringForColumn:@"Name"]]; NSLog(@"name: %@", [rs stringForColumn:@"Name"]); } [rs close]; return toReturn; }

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  • NSUserDefaults and show a picture

    - by Momeks
    Hi , iam using setting.bundle and i try to show a hidden picture with Switch toggle , here is my code but i miss something : NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [//Some code show the hidden pic]; myPic.hidden = NO; my key is .e.g = wood_back should i use ObjectForKey ?

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  • save UIImageView state & the save the Entire View

    - by adamprocter
    I have an iPad app where you add photos to a page. I then want to save the photos positions, then add further pages with more photo positions and eventually save all the pagesto be looked at later in a slideshow style. Can anyone advise 1. Saving UIImageView states when moving to new views (or swapping views) - I see this on using NSCoding iPhone - save UIImageView state - but am at a lose - any more examples ? 2. How to save the 'entire' set of view to look at later (like a slideshow) - no idea on where to start with this ? array ? coredata ? Thanks

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