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• Getting list of bluetooth devices nearby on iphone sdk

  - by Michael Cindric

  Hi Guys, I need to be able to search for all bluetooth devices nearby and just get there ids. I don't need to pair at all. I am using iphone 2.3 beta. Is this possible l have tried using GameKit and no luck does anyone know how to do this. BOOL result = NO; if (!session) { session = [[GKSession alloc] initWithSessionID:@"SCANNER" displayName:nil sessionMode:GKSessionModePeer]; self.session.delegate = self; [self.session setDataReceiveHandler:self withContext:nil]; self.session.available = YES; result = YES; } it dies on [self.session setDataReceiveHandler:self withContext:nil]; with the following error Scanner[42754:207] Error: 30500 -- Invalid parameter for -setDataReceiveHandler:withContext:. then ~ DNSServiceRegister callback: Ref=471fa40, Flags=2, ErrorType=0 name=00rusor1A..iPhone Simulator regtype=_q1eu29voete9jf._udp. domain=local.

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• UIWebView EXC_BAD_ACCESS crash

  - by HARDWARRIOR

  I'm experiencing crashes of an app that uses UIWebView. Usually it's when page is not fully loaded and UIWebView is sent stopLoading selector. Or when UIWebView fully loaded page. I've got EXC_BAD_ACCESS. Stack looks like this: #0 0x95bb7688 in objc_msgSend #1 0x30a671db in -[UIWebView webView:decidePolicyForNavigationAction:request:frame:decisionListener:] #2 0x3024a10d in __invoking___ #3 0x30249ff8 in -[NSInvocation invoke] #4 0x358ab160 in HandleDelegateSource #5 0x302452c1 in CFRunLoopRunSpecific #6 0x30244628 in CFRunLoopRunInMode #7 0x32044c31 in GSEventRunModal #8 0x32044cf6 in GSEventRun #9 0x309021ee in UIApplicationMain #10 0x0000239c in main at main.m:13 for me most strange thing here is webView:decidePolicyForNavigationAction:request:frame:decisionListener: selector sent to UIWebView, because there is no such selector in UIWebView documentation! Only for Cocoa (not cocoa touch) WebView. I suspect that there is something wrong with UIWebView or its delegate. But I can't set breakpoint to watch them. Please advise how I can get more info in this situation.

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• iphone - UIImagePickerController compressing video?

  - by Mike

  I am using a UIImagePickerController to get a video from the library. So, I am using this picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; picker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:picker.sourceType]; picker.allowsEditing = NO; picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie]; [self presentModalViewController:picker animated:YES]; [picker release]; As soon as I select the video and tap on CHOOSE, I see the message "Compressing Video" and it stays ages stuck... I waited for 5 minutes and the message was still there. Is there a way to prevent this? Why I cannot simply take a copy of the move as it is. I do not want any compressing... is there a way to solve this? thanks.

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• Strange problem with UIDocumentInteractionController

  - by Tùng Ð?

  I don't know what wrong with this code but everytime when I run the app, after the Menu is shown, the app crash. NSString * path = [[NSBundle mainBundle] pathForResource:@"tung" ofType:@"doc"]; UIDocumentInteractionController *docController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:path]]; docController.delegate = self; //[docController presentPreviewAnimated:YES]; CGRect rect = CGRectMake(0, 0, 300, 300); [docController presentOptionsMenuFromRect:rect inView:self.view animated:YES]; Error I got: * Terminating app due to uncaught exception 'NSGenericException', reason: '-[UIPopoverController dealloc] reached while popover is still visible.' What should I do now ?

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• How to achieve conditional resource import in a Spring XML context?

  - by Boris Terzic

  What I would like to achieve is the ability to "dynamically" (i.e. based on a property defined in a configuration file) enable/disable the importing of a child Spring XML context. I imagine something like: <import condition="some.property.name" resource="some-context.xml"/> Where the property is resolved (to a boolean) and when true the context is imported, otherwise it isn't. Some of my research so far: Writing a custom NamespaceHandler (and related classes) so I can register my own custom element in my own namespace. For example: <myns:import condition="some.property.name" resource="some-context.xml"/> The problem with this approach is that I do not want to replicate the entire resource importing logic from Spring and it isn't obvious to me what I need to delegate to to do this. Overriding DefaultBeanDefinitionDocumentReader to extend the behaviour of the "import" element parsing and interpretation (which happens there in the importBeanDefinitionResource method). However I'm not sure where I can register this extension.

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• Reload UItabbar view when using selectedIndex

  - by Hetal Vora

  Hi, In my application I have 4 tabs in my tab bar. There is a navigation where if i click on a button on tab bar 2 view, it should take me to tab bar 3 view. I am doing this by using setting the selectedIndex property of tab bar like appDelegate.tabBarController.selectedIndex = 2; However, this doesn't reload the view of tab bar 3. It simply shows the tab bar 3 view that was last accessed (which may be down the navigation hieararchy in tab bar 3). Please help as to how can i reload the root view of tab bar 3. I tried having the delegate method of tabbar as below: - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { [viewController.navigationController popToRootViewControllerAnimated:FALSE]; } but this works only if I click on a tab to go to the view and doesn't work with selectedIndex.Please help.

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• mgtwitterengine and oauth 401 error: Boggled

  - by Jason

  OK... so here is my code: twitterEngine = [[MGTwitterEngine alloc] initWithDelegate:self]; [twitterEngine setConsumerKey:CONSUMER_KEY secret:CONSUMER_SECRET]; accessToken = [twitterEngine getXAuthAccessTokenForUsername:profile.twitterUserId password:profile.twitterPassword]; NSLog(@"Access token: %@", accessToken); the console shows the access token returned just fine (so it seems to work) eg. Access token: C8A24515-0F11-4B5A-8813-XXXXXXXXXXXXXX but instead of accessTokenReceived method being called next on my delegate, it calls requestFailed with a 401. How can I be getting a 401 unauthorized and getting an access token back from the method call?????

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• UIImagePicker and Memory Warning Level 1

  - by user262829

  Hello, Whenever I use a UIImagePicker to take a picker in my app, I get the following message in the debug console: Receive memory warning. Level=1 I am using the following code: imagePickerController = [[UIImagePickerController alloc] init]; imagePickerController.delegate = self; imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; [window addSubview:imagePickerController.view]; imageView = [[UIImageView alloc] initWithFrame:[window bounds]]; imageView.hidden = YES; [window addSubview:imageView]; [window makeKeyAndVisible]; Does anybody have any ideals? I did not notice this error until I started using the GM Seed for SDK4.

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• Why does fileURLWithPath: give me a file://localhost/ URL?

  - by jxpx777

  I have a project I'm working on and this seems like the simplest thing in the world, but the +[NSURL fileURLWithPath:] factory method is returning a strange URL. I created an empty sample project to isolate the problem and in my app delegate's applicationDidFinishLaunching: method I have this simple code: NSString *path = [@"~/Documents" stringByExpandingTildeInPath]; NSURL *url = [NSURL fileURLWithPath:path]; NSLog(@"%@ | %@", path, url); and the NSLog result looks like this: /Users/myusername/Documents | file://localhost/Users/myusername/Documents/ when I would expect the URL to be file:///Users/myusername/Documents. Any thoughts on why this is behaving like this? (10.6.3 in case it matters.)

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• Proper way to Dispose of a BackGroundWorker

  - by galford13x

  Would this be a proper way to dispose of a BackGroundWorker? I'm not sure if it is necesary to remove the events before calling .Dispose(). Also is calling .Dispose() inside the RunWorkerCompleted delegate ok to do? public void RunProcessAsync(DateTime dumpDate) { BackgroundWorker worker = new BackgroundWorker(); worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted); worker.DoWork += new DoWorkEventHandler(worker_DoWork); worker.RunWorkerAsync(dumpDate); } void worker_DoWork(object sender, DoWorkEventArgs e) { // Do Work here } void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { BackgroundWorker worker = sender as BackgroundWorker; worker.RunWorkerCompleted -= new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted); worker.DoWork -= new DoWorkEventHandler(worker_DoWork); worker.Dispose(); }

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• How to integrate KVC in MVC?

  - by Paperflyer

  So I have an MVC-application in Cocoa. There are some custom views, a controller and a model. Of course, the views need to know some stuff, so they get their data from the controller. However, they do not use accessors in the controller, they use KVC with a keypath that calls right through to the model: // In view.m time = [timeSource valueForKeyPath:@"theModel.currentTime"]; // timeSource is a pseudo-delegate of the view that holds the controller This simplifies things a great deal and technically, the views still don't know the model in person (that is, in pointer). But of course, they access it directly. Is that a usual (or at least sensible) usage of KVC and MVC? Or how would you implement this kind of communication?

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• 401 Unauthorized using oauth with twitter on iPhone

  - by menkel

  I use Twitter-OAuth-iPhone. http://github.com/bengottlieb/Twitter-OAuth-iPhone/ when i try to login on twitte, I received an error 401 i received the delegate call for - (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username { but when i try to send a tweet just after [_engine sendUpdate: [NSString stringWithFormat:@"Hello World"]]; i received an error 401 failed with error: Error Domain=HTTP Code=401 "Operation could not be completed. (HTTP error 401.)" i have check my twitter application setting Type: Client Default Access type: Read & Write

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• Error: Expected specifier-qualifier-list before ... in XCode Core Data

  - by Doron Katz

  Hi guys, I keep on getting this error "error: expected specifier-qualifier-list for core data code im working with, in the app delegate. Now when i get this error and about 40 other errors relating to managedobjectcontext etc, i thought maybe the library needs to be imported. Now i havent done this before, but i went to Frameworks group and add existing frameworks and it added CoreData.framework. I re-build and it still came up with the error. Do I need to import anything in the headers explicitly or is there some other step i need to do? Thanks

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• Hiding/ Showing UIPickerView

  - by aahrens

  I Have an a touchesEnded event that checks for when a UITextField is pressed. What I would like it to do is is hide/show a UIPickerView. How can this be done? - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ UITouch *touch = [[event allTouches] anyObject]; if (CGRectContainsPoint([self.textField frame], [touch locationInView:self.view])) { NSString * error = @"Touched the TextField"; UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle:@"Selection!" message:error delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [errorAlert show]; //Want to show or hide UIPickerView } } I already have an allocated UIPickerView when touches occur @interface ThirdViewController : UIViewController <UITextFieldDelegate,UIPickerViewDelegate> { IBOutlet UIPickerView *pickerView; }

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• How to save image to iphone's AddressBook using SDK API ?

  - by apple.dev

  My purpose is to process one image from image library, and save this image directly to one person record (i,e, "Tom" ), which is selected from AddressBook, I can see the new image replace Tom's previous image, but I can not save it to AddressBook. I implemented delegate ABPeoplePickerNavigationControllerDelegate, and using following logics, but whatever I tried, modified records can not be saved to address books. Any clues or suggest ? Thanks ABAddressBookRef addressBook= ABAddressBookCreate(); CFErrorRef error = NULL; BOOL wantToSaveChanges = YES; ABRecordSetValue(person, kABPersonFirstNameProperty, @"Shi", &error);//, &error) NSData * dataRef = UIImagePNGRepresentation(cellImage); ABPersonSetImageData(person, dataRef, &error); if (ABAddressBookHasUnsavedChanges(addressBook)) {\ NSLog(@"need to save "); if (wantToSaveChanges) { ABAddressBookSave(addressBook, &error); } else { ABAddressBookRevert(addressBook); } }else { NSLog(@"no changes"); } if (error != NULL) {/*... Handle error. ...*/ NSLog(@"error happened here " ); } CFRelease(addressBook);

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• UITableView in a View controller by a UIViewController and not a UITableView

  - by dirrigc

  Hi all, I have a View with lots of things inside it including buttons, a scroll view and a tableView (ipad app). I am controller this view with a viewController subclass but I don't know how to manage my tableView. I don't know where put the methods : - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath should i add them to my ViewController or should i create a new subclass of UITableViewController (and get them "for free") and set the dataSource and delegate of my tableView to that class when I create it programmatically? I am storing the data I want to show in my appDelegate following the tutorial : http://www.iphonesdkarticles.com/2008/10/sqlite-tutorial-selecting-data.html I am new at developing and I fear I am spagetti coding. Thanks a lot

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• Does UIGestureRecognizer work on a UIWebView?

  - by rscott

  I am attempting to get a UIGestureRecognizer working with a UIWebview which is a subview of a UIScrollView. This sounds odd but when I have the numberOfTouchesRequired set to 2 the selector fires, but when numberOfTouchesRequired is set to one the selector doesn't fire. Here is my code: UITapGestureRecognizer *tap1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(select1:)]; tap1.numberOfTouchesRequired = 2; tap1.numberOfTapsRequired = 1; tap1.delegate = self; [self.ans1WebView addGestureRecognizer:tap1]; [tap1 release]; - (void) select1:(UILongPressGestureRecognizer *)sender { //Do Stuff } I've confirmed this by using the Apple sample for UIGestureRecognizer and inserting a webview in their nib. Their tap code works everywhere but inside the area of the webview.

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• Updating fields of values in a ConcurrentDictionary

  - by rboarman

  I am trying to update entries in a ConcurrentDictionary something like this: class Class1 { public int Counter { get; set; } } class Test { private ConcurrentDictionary<int, Class1> dict = new ConcurrentDictionary<int, Class1>(); public void TestIt() { foreach (var foo in dict) { foo.Value.Counter = foo.Value.Counter + 1; // Simplified example } } } Essentially I need to iterate over the dictionary and update a field on each Value. I understand from the documentation that I need to avoid using the Value property. Instead I think I need to use TryUpdate except that I don’t want to replace my whole object. Instead, I want to update a field on the object. After reading this blog entry on the PFX team blog: Perhaps I need to use AddOrUpdate and simply do nothing in the add delegate. Does anyone have any insight as to how to do this?

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• multy threading wpf

  - by Eran

  Hey, I'm using web refernce call in new working thread in my application as follow: Thread callRunner = new Thread(delegate() { _mediator.IncomingCallDetails(phoneNumber); }); callRunner.Start() ; the _mediator calls the web refernce and replay to the caller in event as follow: void IncomingCallComplited(IncomingCallEventArg args) { Caller = args.Caller; Lodgers = args.Lodgers; PreviousMissions = args.PreviousMissions; } Caller ,Lodgers and PreviousMissions are properties of an object that bind to GUI element,as for now the binding works fine and i can see the values from the web refernce in screen my question is should I use Dispatcher in the event or in any other phase ? and if I do can someone please explain why? Thanks Eran

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• multi threading wpf

  - by Eran

  Hey, I'm using web refernce call in new working thread in my application as follow: Thread callRunner = new Thread(delegate() { _mediator.IncomingCallDetails(phoneNumber); }); callRunner.Start() ; the _mediator calls the web refernce and replay to the caller in event as follow: void IncomingCallComplited(IncomingCallEventArg args) { Caller = args.Caller; Lodgers = args.Lodgers; PreviousMissions = args.PreviousMissions; } Caller ,Lodgers and PreviousMissions are properties of an object that bind to GUI element,as for now the binding works fine and I can see the values from the web reference in screen my question is should I use Dispatcher in the event or in any other phase ? and if I do can someone please explain why? Thanks Eran

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• How to push a modal view from didFinishPickingMediaWithInfo

  - by Andiih

  I've got an imagePickerController which allows the user to take or select an image. In - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info; I would like to trigger opening another modal view to capture the caption. I have a call for that purpose... -(void) getcaption:(id) obj { textInput * ti = [[textInput alloc] initWithContent:@"" header:@"Caption for photo" source:2]; ti.delegate = self; [self presentModalViewController:ti animated:YES]; [ti release]; } The question is how to call getcaption without triggering a spiral of #6663 0x324abb18 in -[UIView(Hierarchy) _makeSubtreePerformSelector:withObject:withObject:copySublayers:] () At the moment I do [self performSelector:@selector(getcaption:) withObject:nil afterDelay:(NSTimeInterval)1]; in didFinishPickingMediaWithInfo which is nasty, and only 95% reliable

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• CGAffineTransform does not rotate subview - MKAnnotationView, CGAffineTransformMakeRotation

  - by ZeroDiv

  I have a view that does 1 simple thing: draws an image. I can rotate the image like this: CGAffineTransform transform = CGAffineTransformMakeRotation((CGFloat)radians); self.transform = transform; // WORKS: DRAWS, ROTATES But if I delegate the image-drawing function to a subview, and apply the rotation transform to the subview: CGAffineTransform transform = CGAffineTransformMakeRotation((CGFloat)radians); self.imageView.transform = transform; // DOESN'T WORK: DRAWS, BUT NO ROTATE I get the image drawn, but no rotation. Why? FWIW the "self" view is an MKAnnotationView.

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• UIButton disappears inside selected UITableViewCell

  - by Mike

  I have a table, I have cellForRowAtIndexPath delegate for it and I have instance of UITableViewCell being created inside that method, which I return. Somewhere in cellForRowAtIndexPath I also add UIButton to cell.contentView of that cell. It all works fine, until I select that cell with button in it. The cell changes color to blue (which is ok), uibutton changes its color to blue too. Now, if I click on that UIButton inside selected cell, it just disappears! Wow, that's weird, how do I fix it? I want UIButton inside selected cell to stay, when I click it.

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• Getting SHOUTcast metadata on the Mac

  - by Fernando Valente

  I'm creating an application in Objective-C and I need to get the metadata from a SHOUTcast stream. I tried this: NSURL *URL = [NSURL URLWithString:@"http://202.4.100.2:8000/"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL]; [request addValue:@"1" forHTTPHeaderField:@"icy-metadata"]; [request addValue:@"Winamp 5/3" forHTTPHeaderField:@"User-Agent"]; [request addValue:@"audio/mpeg" forHTTPHeaderField:@"Content-Type"]; [NSURLConnection connectionWithRequest:request delegate:self]; I would have to get the headers from this request in order to get the information, right? Unfortunately it keeps returning these headers: Date = "17 Apr 2010 21:57:14 -0200"; "Max-Age" = 0; What I'm doing wrong?

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• wso2 products and alfresco integration

  - by Ivo

  I've found this tutorial about installing Alfresco on WSO2 Appserver. http://sanjeewamalalgoda.blogspot.com/2011/09/how-to-install-alfresco-on-wso2.html Does this mean I can delegate authentication to the wso2 security configuration also? I wouldn't want to have to manage security in both places separately. If I were to deploy Alfresco in wso2 I would want to use the wso2 Identity Server for authentication. I was thinking about Alfresco running in wso2 Appserver using identity server for authentication and ESB for the Alfresco services. Is this approach suitable for other apps as well? Is that possible?

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