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  • NSManagedObjectContext returning nil iphone

    - by harekam_taj
    Hey, I created a class ServerModel for my app and in it I want to make a connection to the Sqlite database I have on the device, but anytime I go to check my NSManagedObjectContext it is returning null. While the same work well in my other class RootViewController In my appdelegate I am doing rootViewController.managedObjectContext = self.managedObjectContext; serverModel.managedObjectContext = self.managedObjectContext;

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  • iPhone: How to read contents from UIWebView XML Document?

    - by David Conlisk
    Hi all. In my iPhone app I'm using a UIWebView to allow the user to browse to an XML document on a website. When the user has found the xml document they want, they click a button below the UIWebView. Then I try to read the contents of the XML document from the UIWebView using: NSString *xml = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementByTagName('rootXmlNodeName')[0].innerHTML"]; This doesn't work for me for XML documents. It works fine in a HTML page, e.g. using "html" for the rootXmlNodeName in the code snippet above. Any ideas? Thanks in advance!

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  • iPhone - phone goes to sleep even if idleTimerDisabled is YES

    - by lostInTransit
    Hi I am using this in my appdelegate's applicationDidFinishLaunching: method to make sure the iPhone doesn't go to sleep during the time the app is open [application setIdleTimerDisabled:YES]; It works great on all screens but on one of the screens the iPhone goes to sleep. I could not figure out how to reproduce this and it seems to happen at random times. Can someone please tell me how to handle this situation. Thanks

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  • Passing html parameters to server odd problem

    - by StealthRT
    Hey all i am having a weird problem with sending data back to my server. This is the code i am using: NSString *theURL =[NSString stringWithFormat:@"http://www.xxx.com/confirm.asp?theID=%@&theName=%@&empID=%@&theComp=%@", theConfirmNum, tmpNBUserRow.userName, labelTxt.text, theID]; NSLog(@"%@,%@,%@,%@", theConfirmNum, tmpNBUserRow.userName, labelTxt.text, theID); NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:theURL]]; [request setHTTPMethod:@"POST"]; NSError *error; NSURLResponse *response; NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding]; if ([data isEqualToString:@"Done"]) I can run the code from the browser and it works just fine using the data i got from the NSLog output. The NSLog output for each value is correct. But for some reason when i put a break on the IF ([data isEqualToString:@"Done"]) it has no return value. I checked each value for what it was sending (and again, it was correct in the NSLog output) and i found that the value "theID" said "Out of scope". Although, again, the NSLog had the value in it correctly? So i searched the forum and found a simular problem. I took their advice and added "RETAIN" to the "theID" value like so: theID = [customObjInstance TID]; [theID retain]; However, that did not solve the issue... Here is the console NSLog output: [Session started at 2010-04-11 01:31:50 -0400.] wait_fences: failed to receive reply: 10004003 wait_fences: failed to receive reply: 10004003 nbTxt(5952,0xa0937500) malloc: *** error for object 0x3c0ebc0: double free *** set a breakpoint in malloc_error_break to debug 2010-04-11 01:32:12.270 nbTxt[5952:207] 5122,Rob S.,5122,NB010203 The NSLog values i am sending is the last line "5122,Rob S.,5122,NB010203" Any help would be great :o) David

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  • What's the proper way to setup different objects as delegates using Interface Builder?

    - by eagle
    Let's say I create a new project. I now add two text fields to the view controller in Interface Builder. I want to respond to delegate events that the text fields create, however, I don't want to have the main view controller to act as the delegate for both text fields. Ideally I want a separate file for each text field that acts as the delegate. Each of these objects also needs to be able to interact with the main view controller. My question is how I would set this up and link everything correctly? I tried creating a new class that inherits from NSObject and implements UITextFieldDelegate. I then added an instance variable called "viewController" of the same type of my view controller and marked it with IBOutlet (this required me to add #import "myViewcontroller.h"). I then went to Interface Builder and opened up my view controller which contains the two edit boxes. I added an NSObject to the form and changed it's type to be of the new class I created. I set its viewController property to the File's Owner, and set one of the textbox's delegate properties to point to this new object I created. Now when I run the program, it crashes when I touch the text box. It gives the error EXC_BAD_ACCESS. I'm guessing I didn't link stuff correctly in IB. Some things I'm not sure about which might be the problem: Does IB automatically know to create an instance of the class just by placing the NSObject in the ViewController? Can it properly assign the viewController property to an instance of itself even though it is creating itself at the same time?

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  • iPhone OpenGL ES missing functions should be there - glBlendFuncSeparate etc

    - by quixoto
    I'm using OpenGL ES 1.1 on the iPhone, and I'd like to use the following functions: glBlendFuncSeparate glBlendColor With their related constants. These didn't exist in early iPhone GL implementations, but according to this page: http://developer.apple.com/iphone/library/releasenotes/General/iPhone30APIDiffs/index.html they should be there in 3.0+, which I'm building for. But I'm getting "implicit definition" warnings. What do I need to do to get those functions? Thanks!

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  • strange MPMoviePlayer problem

    - by Rahul Vyas
    I am using mpmovieplayer in my application.I have a button for playing movie witch has an image of play.But when mpmovieplayer plays movie i can see that button on movie player's overlying controlls like when i pause movie i see my play button instead of movie player's default button.Also i have customized navigation bar and i can see that navbar when movie plays instead of default nav bar.I tried hiding button when playing movie but it didn't worked.Does Someone knows about this issue? also i am having cropping of video issues does someone knows about how to handle video orientation i mean i want full video in any orientation recorded video.Thanks

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  • Schedule timer with NSTimer makes the task run faster than expected

    - by Hoang Pham
    I schedule a timer with NSTimer's function in viewWillAppear as follows: minutesTimer = nil; minutesTimer = [NSTimer scheduledTimerWithTimeInterval:60 target:self selector:@selector(updateScrollViewItems) userInfo:NULL repeats:YES]; With this function call, I expect it to call the selector updateScrollViewItems every minute, but it does not, it update items faster than expected (around some seconds). What is the cause of this unexpected behavior?

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  • Use VersionControlExt.Explorer outside Visual Studio

    - by Ian
    Hi All, I'm developing a TFS tool to assist the developers in our company. This said tool needs to be able to "browse" the TFS server like in the Source Control Explorer. I believe that by using VersionControlExt.Explorer.SelectedItems, a UI will pop-up that will enable the user to browse the TFS server (please correct me if I'm wrong). However, VersionControlExt is only accessible when developing inside Visual Studio (aka Plugin). Unfortunately, I am developing a Windows Application that won;t run inside VS. So the question is, Can I use VersionControlExt outside of Visual Studio? If yes, how? Here's an attempt on using the Changset Details Dialog outside of Visual Studio string path = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); Assembly vcControls = Assembly.LoadFile(path + @"\Microsoft.TeamFoundation.VersionControl.Controls.dll"); Assembly vcClient = Assembly.LoadFile(path + @"\Microsoft.TeamFoundation.VersionControl.Client.dll"); Type dialogChangesetDetailsType = vcControls.GetType("Microsoft.TeamFoundation.VersionControl.Controls.DialogChangesetDetails",true); Type[] ctorTypes = new Type[3] {vcClient.GetType("Microsoft.TeamFoundation.VersionControl.Client.VersionControlSever"), vcClient.GetType("Microsoft.TeamFoundation.VersionControl.Client.Changeset"), typeof(System.Boolean)}; ConstructorInfo ctorInfo = dialogChangesetDetailsType.GetConstructor(ctorTypes); Object[] ctorObjects = new Object[3] {VersionControlHelper.CurrentVersionControlServer, uc.ChangeSet, true}; Object oDialog = ctorInfo.Invoke(ctorObjects); dialogChangesetDetailsType.InvokeMember("ShowDialog", BindingFlags.InvokeMethod, null, oDialog, null);

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  • current location from CoreLocation

    - by Christian
    I have an App which launches the google Map App. The code is: UIApplication *app = [UIApplication sharedApplication]; [app openURL:[[NSURL alloc] initWithString: @"http://maps.google.com/maps?daddr=Obere+Laube,+Konstanz,+Germany&saddr="]]; The saddr= should be the current location. I get the current location with -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { NSLog(@"%f,%f", [newLocation coordinate]); The Log displays the correct coordinates like 2010-04-05 15:33:25.436 deBordeaux[60657:207] 37.331689,-122.030731 I didn't find the right way to transmit the coordinates to the url-string. Does someone can give me a hint how-to?

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  • Distributing APNS providers

    - by Sam
    I'm writing a business-focused iPhone app which includes a self-hosted server component. I'd like to include push notification functionality in the server; reading through the programming guide it looks as if this would involve either: Distributing the provider certificate with the server component - this doesn't sound like a terribly good idea (even if Apple permits it?) Hosting a shared notification provider and forwarding notifications to APNS from the servers. For an ongoing, high-availability service, this is likely to require including a subscription pricing component, which I would prefer to avoid. Require customers to apply for their own provider certificate. However, it's not clear whether multiple organisations are allowed to apply for provider certificates with a single bundle ID, and it would significantly increase the barrier to adoption. APNS looks to me as if it's specifically geared for centrally hosted services. Is anyone distributing self-hosted notification providers? Are there any other options?

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  • UIImagePickerController Causes my app to crash!

    - by Flafla2
    In my app, a user can select an image, change the picture of a UIImageView to the new imge, and save the image to NSUserDefaults using NSKeyedArchiver. When the user selects the image the app immediately crashes! Here is my code - - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { [picker dismissModalViewControllerAnimated:YES]; if ([[NSUserDefaults standardUserDefaults] integerForKey:@"PictureKey"] == 1) { UIImage *previmage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [prevbutton setImage:previmage]; NSData *previmagedata = [NSKeyedArchiver archivedDataWithRootObject:previmage]; [[NSUserDefaults standardUserDefaults] setObject:previmagedata forKey:@"PrevImage"]; } else if ([[NSUserDefaults standardUserDefaults] integerForKey:@"PictureKey"] == 2) { UIImage *nextimage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [nextbutton setImage:nextimage]; NSData *nextimagedata = [NSKeyedArchiver archivedDataWithRootObject:nextimage]; [[NSUserDefaults standardUserDefaults] setObject:nextimagedata forKey:@"NextImage"]; }else { UIImage *optionsimage = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; [moreoptionsbutton setImage:optionsimage]; NSData *optimagedata = [NSKeyedArchiver archivedDataWithRootObject:optionsimage]; [[NSUserDefaults standardUserDefaults] setObject:optimagedata forKey:@"OptionsImage"]; } } Thanks in advance!

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  • Resize images in UIWebView to viewport size

    - by atz
    I'm displaying HTML with some images inside a UIWebView in my iPhone App. When the images are wider than the viewport of the iPhone I get horizontal scrollers which I don't want because its mostly about the text not the images. Is there a way to resize images displayed inside the UIWebView according to the width (best: even if the device is rotated)?

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  • How to I pass @selector as a parameter?

    - by erotsppa
    For the method [NSThread detachNewThreadSelector:@selector(method:) toTarget:self withObject:(id)SELECTOR]; How do I pass in a @selector? I tried casting it to (id) to make it compile but it crashes in runtime. More specifically, I have a method like this +(void)method1:(SEL)selector{ [NSThread detachNewThreadSelector:@selector(method2:) toTarget:self withObject:selector]; } it crashes, how do I pass in the selector without crashing? So that the new thread can call the selector when the thread is ready?

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  • NSArray in NSArray do not return the image I want

    - by Tibi
    Hi there, I've got a code snippet here that I can't make working. NSUInteger i; //NSMutableArray *textures = [[NSMutableArray alloc] initWithCapacity:kNumTextures]; //NSMutableArray *texturesHighlighted = [[NSMutableArray alloc] initWithCapacity:kNumTextures]; NSMutableArray *textures= [[NSMutableArray alloc] init]; for (i = 1; i <= kNumTextures; i++) { NSString *imageName = [NSString stringWithFormat:@"texture%d.png", i]; NSString *imageNameHighlighted = [NSString stringWithFormat:@"texture%d_select.png", i]; UIImage *image = [UIImage imageNamed:imageName]; UIImage *imageHighlighted = [UIImage imageNamed:imageNameHighlighted]; //NSArray *pics = [[NSArray alloc] initWithObjects:(UIImage)image,(UIImage)imageHighlighted,nil]; NSArray *pics = [NSArray arrayWithObjects:image,imageHighlighted,nil]; [textures addObject:pics]; [pics release]; } //select randomly the position of the picture that will be represented twice on the board NSInteger randomTexture = arc4random()%([textures count]+1); //extract image corresponding to the randomly selected index //remove corresponding pictures from textures array NSArray *coupleTexture = [textures objectAtIndex:randomTexture]; [textures removeObjectAtIndex:randomTexture]; //create the image array containing 1 couple + all other pictures NSMutableArray *texturesBoard = [[NSMutableArray alloc] initWithCapacity:kNumPotatoes]; [texturesBoard addObject:coupleTexture]; [texturesBoard addObject:coupleTexture]; [coupleTexture release]; NSArray *pics = [[NSArray alloc] init]; for (pics in textures) { [texturesBoard addObject:pics]; } [pics release]; //shuffle the textures //[texturesBoard shuffledMutableArray]; //Array with masks NSMutableArray *masks= [[NSMutableArray alloc] init]; for (i = 1; i <= kNumMasks; i++) { NSString *maskName = [NSString stringWithFormat:@"mask%d.png", i]; UIImage *mask = [UIImage imageNamed:maskName]; //NSArray *pics = [[NSArray alloc] initWithObjects:mask,nil]; [masks addObject:mask]; //[pics release]; [maskName release]; [mask release]; } //Now mask all images in texturesBoard NSMutableArray *list = [[NSMutableArray alloc] init]; for (i = 0; i <= kNumMasks-1; i++) { //take on image couple from textures NSArray *imgArray = [texturesBoard objectAtIndex:i]; UIImage *mask = [masks objectAtIndex:i]; //mask it with the mask un the array at corresponding index UIImage *img1 =(UIImage *) [imgArray objectAtIndex:0]; UIImage *img2 =(UIImage *) [imgArray objectAtIndex:1]; UIImage *picsMasked = [self maskImage:(UIImage *)img1 withMask:(UIImage *)mask]; UIImage *picsHighlightedMasked = [self maskImage:(UIImage *)img2 withMask:(UIImage *)mask]; //Init image with highlighted status TapDetectingImageView *imageView = [[TapDetectingImageView alloc] initWithImage:picsMasked imageHighlighted:picsHighlightedMasked]; [list addObject:imageView]; } The problem here is that : img1 and img2, are not images but rather NSArray with multiple entries. Ican't figure why... dos any fresh spirit here could provide me with some clue to fix. maaany thanks.

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  • Problem dismissing multiple modal view controllers

    - by Sheehan Alam
    I am having trouble getting my modal view controllers to display properly. I have a parent view controller that is the delegate for modal view A. In modal view A I am presenting modal view B, and having the delegate dimiss modal view A. When modal view B appears it seems to display but the screen dims, and the UI locks up, but the app doesn't crash. I set animation settings to NO and I am still getting the same issue.

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  • where did all the templates in xcode go?

    - by Ayrad
    After the recent update in xcode I seem to have lost all the template for cocoa touch and iphone templates. Under Cocoa Touch Classes in the new file dialog, I only have 3 choices: Objective-C class Objective-C test case class and UIViewController subclass where did the others go? UITableView, UInavigation etc.? I am running xcode 3.1.3. Thanks!

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  • [iPhone] Objective-C : UIScrollView manual paging

    - by Daniel
    Hi Folks! I want to use the scrollview as something like a picker in horizontal mode. The scrollview holds up to seven subviews. Each subview represents a value. Always three views are visible and the one in the middle is the selected one. Scrollview visible at start: __ | V1 | V2 Scrollview set to view/value two: V1 | V2 | V3 Scrollview set to last value: V2 | V3 | __ The real problem I have got is the "pagingEnabled" flag. If pagingEnabled is set to YES the scrollview pages always three subviews/values instead of only one. If pagingEnabled is set to NO the scrollview does not clinch. Is there a nice solution for my problem? Thanks a lot, Dan ;)

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