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  • Cocoa touch - GameKit GKPeerPickerController devices

    - by teepusink
    Hi, I'm now testing GKPeerPickerController. I have a simple app that just have a button and do GKPeerPickerController on a device. However, all it does is "Looking for other iPhones or iPod touches..." I do have another device nearby with bluetooth turned on BUT without the app installed. Does that other device also need to have the app installed? Thanks, Tee

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  • How to enable iPhone auto lock during MPMoviePlayer playback?

    - by obiwahn
    When I play a video with MPMoviePlayerController in my app my iPhone does not auto lock (tested OS 3.0 & 3.1.2). However, the application.idleTimerDisabled = NO, so this setting is not affected by MPMoviePlayerController. How can I get my iPhone to sleep normally (e.g. after 3 min screen dims, then goes dark) when my app is running and playing a video?

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  • UIDatePicker inside UIScrollView with pages

    - by Jason Martens
    I have a UIScrollView with 2 pages, and I can scroll horizontally between them. However, on one of my pages, I have a UIDatePicker, and the scroll view is intercepting the vertical touch events so I can no longer manipulate the date picker (except by clicking or tapping). Is there some way to tell the ScrollView to send the vertical touch events to the date picker, but send the horizontal touch events to the scroll view to switch pages?

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  • UISearchBar in UINavigationBar with ScopeBar

    - by ncipollina
    I am trying to put a UISearchBar inside of the UINavigationBar, which I am able to do without much problem. The problem is that I have logic when editing to show the Scope Bar. This all works fine, with one exception. The navigation bar tries to center the UISearchBar inside of the title view. This causes the search bar to move up above the navigation bar. I tried adding some logic to set the frame of the search bar so that it just draws overtop of my main view, which is fine. I can only set the height, which causes the search bar to draw over the view just fine, but it isn't wide enough to cover the whole screen. If I set the width on the frame, it goes back to the same behavior of trying to center the UISearchBar on the navigation bar. Anyone know how I can accomplish this? Thanks, Nick

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  • Using drawAtPoint with my CIImage not doing anything on screen

    - by Adam
    Stuck again. :( I have the following code crammed into a procedure invoked when I click on a button on my application main window. I'm just trying to tweak a CIIMage and then display the results. At this point I'm not even worried about exactly where / how to display it. I'm just trying to slam it up on the window to make sure my Transform worked. This code seems to work down through the drawAtPoint message. But I never see anything on the screen. What's wrong? Thanks. Also, as far as displaying it in a particular location on the window ... is the best technique to put a frame of some sort on the window, then get the coordinates of that frame and "draw into" that rectangle? Or use a specific control from IB? Or what? Thanks again. // earlier I initialize a NSImage from JPG file on disk. // then create NSBitmapImageRep from the NSImage. This all works fine. // then ... CIImage * inputCIimage = [[CIImage alloc] initWithBitmapImageRep:inputBitmap]; if (inputCIimage == Nil) NSLog(@"could not create CI Image"); else { NSLog (@"CI Image created. working on transform"); CIFilter *transform = [CIFilter filterWithName:@"CIAffineTransform"]; [transform setDefaults]; [transform setValue:inputCIimage forKey:@"inputImage"]; NSAffineTransform *affineTransform = [NSAffineTransform transform]; [affineTransform rotateByDegrees:3]; [transform setValue:affineTransform forKey:@"inputTransform"]; CIImage * myResult = [transform valueForKey:@"outputImage"]; if (myResult == Nil) NSLog(@"Transformation failed"); else { NSLog(@"Created transformation successfully ... now render it"); [myResult drawAtPoint: NSMakePoint ( 0,0 ) fromRect: NSMakeRect ( 0,0,128,128 ) operation: NSCompositeSourceOver fraction: 1.0]; //100% opaque [inputCIimage release]; } }

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  • When to release a class with delegates

    - by Stefan Mayr
    A quick question to delegates. Lets say, CLASSA has a delegate defined: @protocol MyDelegate -(void) didFinishUploading; @end In CLASSB I create an instance of CLASS A -(void) doPost { CLASSA *uploader = [[CLASSA alloc] init]; uploader.delegate = self; // this means CLASSB has to implement the delegate uploader.post; } and also in CLASSB: -(void)didFinishUploding { } So when do I have to release the uploader? Because when I release it in doPost, it is not valid anymore in didFinishUploading. Thanks

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  • My UITableView has duplicated rows

    - by Mark
    Im not sure why, but my UITableView, which isnt anything fancy, is showing repeating rows when it shouldnt be. It seems that the rows that get added when the user scrolls (i.e. the rows that are off the screen to start with) are getting the data for the wrong row index. Its almost like when a new cell is de-queued, it's using a cell that 'was' used, but wasn't cleaned up correctly. Do you need to 'clean up' cells that are de-queue so that new cells dont use cells that are already created? my code is as below: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CustomCellIdentifier = @"CustomCellIdentifier"; MyDayCell *cell = (MyDayCell *)[tableView dequeueReusableCellWithIdentifier: CustomCellIdentifier]; if (cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"MyDayCell" owner:self options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[MyDayCell class]]) cell = (MyDayCell *)oneObject; } NSUInteger section = [indexPath section]; NSUInteger row = [indexPath row]; NSArray *thisSectionItems = (NSArray*)[self.listData objectForKey: [[NSNumber alloc] initWithInt:section]]; MyDayDetails *rowData = [thisSectionItems objectAtIndex:row]; //setup my cells data here... return cell; } Is there anything wrong with this code? has anyone seen anything like this before?

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  • How can I make my tableview enter editing mode?

    - by Jake
    Hi, for some reason I can't get my tableview to enter editing mode. It's a little harder than it might seem because I'm using some open source code to make a calendar (iCal esque) with a tableview under it, and it's not quite as straightforward as just using a regular tableview. Basically, I have two classes. One (let's say Class A) is a UIViewController and the other (Class B) is that viewController's datasource and tableview delegate. In Class B, I've implemented -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath; which works fine, but if I put an edit nav bar item in Class A (the view controller), nothing happens. Am I forgetting certain protocols, or certain special methods that I need to write? Thanks for any help, and apologies if I'm missing something, I'm just learning to work with other people's code.

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  • Compile error on action for iPhone app: "error:expected ')' before ';' token"

    - by Jamis Charles
    I'm working through the tutorials in the "Beginning iPhone Development" book. I'm on chapter 4 and I'm getting the following compile error on the "if (segment == kShowSegmentIndex)" line: error:expected ')' before ';' token Here's my code: - (IBAction)toggleShowHide:(id)sender{ UISegmentedControl *segmentedControl = (UISegmentedControl *)sender; NSInteger segment = segmentedControl.selectedSegmentIndex; if (segment == kShowSegmentIndex) [switchView setHidden:NO]; else [switchView setHidden:YES]; } I've compared it with the code in the book several times and have retyped it. Sounds like this error is caused by improper brace placement. Any thoughts?

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  • Altering ManagedObjects In NSArray

    - by Garry
    I have an entity called 'Job' with two boolean attributes named 'completed' and 'logged'. I am trying to retrieve all completed jobs that have not been logged at app start-up and change them to logged. I'm able to get all the completed but unlogged jobs with this fetchRequest: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(completed == %@ && logged == %@)", [NSNumber numberWithBool:YES], [NSNumber numberWithBool:NO]]; I'm then assigning this predicate to a fetchRequest and calling the [managedObjectContext executeFetchRequest:fetchRequest] method to get an array of all Job entities that meet this criteria. This seems to work fine and is returning the correct number of jobs. What I've been trying to do is loop through the NSArray returned, set the logged attribute to YES and then save. This seems to complete and doesn't return any errors but the changes are not persisted when the application quits. Where am I going wrong? [fetchRequest setPredicate:predicate]; NSError error; NSArray jobsToLog = [managedObjectContext executeFetchRequest:fetchRequest error:&error]; if ([jobsToLog count] > 0) { for (int i = 0; i < [jobsToLog count] - 1; i++) { [[jobsToLog objectAtIndex:i] setLogged:[NSNumber numberWithBool:YES]]; // Commit the changes made to disk error = nil; if (![managedObjectContext save:&error]) { // An error occurred } } } Thanks in anticipation,

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  • persistent view controller

    - by derrichh
    Im building an iphone radio application and I want to have the controls, play, pause, stop, etc. in a tool bar (a custom view controller) at the bottom of the application. I want to keep this there throughout all the views so you can control the audio while navigating through the other parts of the application (multiple view/table controllers). Is there a way to create a view that stays in place like a tab bar?

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  • Retrieving Spotlight query used to open document in application

    - by vicvicvic
    If you search for something that opens Preview.app (e.g. a PDF file) in Spotlight, the application not only opens the file but actually copies the Spotlight query into the application's search field (for deeper search). iPhoto and Mail.app also do this. This is a really nice feature. Unfortunately, Apple does not document how it's implemented. Opening a document from Spotlight appears to simply send application:openFile to the application delegate. Is it possible to retrieve the user's Spotlight query somehow? Or is this a hardcoded feature of Spotlight?

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  • Problem when subClassing NSDate

    - by iFloh
    Hi, I first time tried to subClassed an NSDate to give it 2 methods that I need. Compiles fine, but in runtime I try to access it I get an error. Lets say I just want the current date which is unmodified in the subClass: [myNSDate date]; I get the error -[NSDate initWithTimeIntervalSinceReferenceDate:]: method only defined for abstract class. Define -[myNSDate initWithTimeIntervalSinceReferenceDate:]! what is different?

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  • runModalForWindow throttles http requests

    - by Nikita Rybak
    I have url connection, which normally works fine NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:delegate]; But when I create a modal window, no request ever receives response: [NSApp runModalForWindow:window]; If I comment this line out, thus creating a 'standard' window, everything works. I tried implementing all methods from NSURLConnectionDelegate, not a single of them called. I suspect this is something about 'run loops', but have little experience in this area. Does anybody have experience in this? Thank you

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  • How do I remove a button from a view controller's toolbar on the iPhone?

    - by Tony
    I have code that works great for adding a button to the toolbar: NSArray* toolbarItems = [NSArray arrayWithObjects:flexibleSpace,shuffleBarItem,flexibleSpace,nil]; self.toolbarItems = toolbarItems; However, I also want to be able to remove toolbar items. When I use the below method, my application crashes: NSArray* toolbarItems = [NSArray arrayWithObjects:flexibleSpace,nil]; self.toolbarItems = toolbarItems; Does anyone know how I can dynamically alter the toolbar on the iPhone? Thanks!

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  • NSView -(void)keyDown in console program

    - by Jonas Byström
    I'm not getting the -(void)keyDown callback on my inherited NSOpenGLView (note that mouseMoved does not work either though I do setAcceptsMouseMovedEvents:YES, but that is not an issue yet). It implements - (BOOL)acceptsFirstResponder { return YES; } but still no luck. My knowledgeable friend implied that it might have something to do with that the application is still a console application and not a bundled .app (I'm currently porting it). If so: is there some way to circumvent? Could the cause be something else? When I terminate my console application, I frequently see all my keypresses go to stdout so it does seem reasonable...

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  • Array of NSButton

    - by mralvin
    I wonder if I can do something like IBOutlet NSButton * aButton[100]; It turns out that aButton cannot be seen in the interface builder. My app has lots of buttons and I want to see if there are way I can use looping to iterate the state of all buttons.

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  • SQLite3 or SQLite Manager make me crazy !!! Please help me !! I have a presentation next week

    - by ahmet732
    My friend added 90 rows into the database, I tied it up to my app. In my table view name of my variables are shown in proper fashion but when I tapped one of them, in detailsViewController their description is wrong. It shows very old description of variables not the new ones in database. Moreover, it displays the same description for different variables. What's the problem ? What am i missing? My database is correct. It displays same desscriptions for different values. It makes me worried about. Additionally, when I added a new row to my db, it accepts it but it does not perceive it when i run the app. It shows new row in my tableview if and only if I change the name of my db file. I do not want to use another SQL manager ..

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  • Json get a parameter can't access on it iOS

    - by Usi Usi
    That's an example { "updated":1350213484, "id":"http://www.google.com/reader/api/0/feed-finder?q\u003dProva\u0026output\u003djson", "title":"Risultati di feed per \"Prova\"", "self":[ { "href":"http://www.google.com/reader/api/0/feed-finder?q\u003dProva\u0026output\u003djson" } ], "items":[ { "title":"Home Page - La prova del cuoco", "id":"http://www.laprovadelcuoco.rai.it/", "updated":1350213485, "feed":[ { "href":"http://www.laprovadelcuoco.rai.it/dl/portali/site/page/Page-ffb545b4-9e72-41e5-866f-a465588c43fa-rss.html" } ], "alternate":[ { "href":"http://www.laprovadelcuoco.rai.it/", "type":"text/html" } ], "content":{ "direction":"ltr", "content":"Diventa un cuoco provetto con “La Prova del Cuoco”: le videoricette in un' applicazione di facile e veloce consultazione per il tuo Iphone. Scopri come acquistare ..." } }, { "title":"Le prove Invalsi di matematica e italiano", "id":"http://online.scuola.zanichelli.it/quartaprova/", "updated":1350213486, "feed":[ { "href":"http://online.scuola.zanichelli.it/quartaprova/feed/" } ], "alternate":[ { "href":"http://online.scuola.zanichelli.it/quartaprova/", "type":"text/html" } ], "content":{ "direction":"ltr", "content":"Un sito Zanichelli dedicato alle prove Invalsi di italiano e matematica: esercitazioni, consigli, informazioni utili, novità, aggiornamenti e blog d'autore sulle prove ..." } }, How can I get the feed URL? That's what I do NSString *daParsare=[reader searchFeed:searchText]; NSArray *items = [[daParsare JSONValue] objectForKey:@"items"]; for (NSDictionary *item in items) { NSString *title = [item objectForKey:@"title"]; NSString *feed = [item valueForKeyPath:@"feed.href"]; } [tab reloadData]; With the title everything is ok but when I try to access to the feed paramater I get the error...

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