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• Loading Accessory callout view for mkannotationview

  - by Zap

  I have a map annotation view that contains a rightcallout button which loads an accessory view which is a UIViewController class. I am using resuable annotations, but am wondering how I can pass updated information to my UIViewController class. Let's say I have 2 string values which map to 2 UILabels on my view. How can I update those values after the initial accessory view has already been loaded into memory as a resusable view? Any help would be appreciated.

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• iphone development : what will [[UIDevice currentDevice] model] will return for "iPad" ?

  - by g.revolution

  Hi, what will [[UIDevice currentDevice] model] will return for "iPad" ?

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• changing cell background on click on cell in iphone

  - by swap

  How to change cell background image on click on cell in iphone????I have tried following but it is not working.... if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectMake(0,0,320,50) reuseIdentifier:myid] autorelease]; cell.selectedBackgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myImage.png"]]; }

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• NSFetchedResultsControllerDelegate in a second view controller (not firing?)

  - by MTBPatriot

  I am running into an issue similar to the one described here: http://stackoverflow.com/questions/1319940/nsfetchedresultscontrollerdelegate-not-firing (the delegate for my NSFetchedResultsControllerDelegate are not being called on my second view controller) I can't seem to get the proposed solutions to work. I have a main view that loads information from Core Data just fine, but when it pushes a separate controller (and passes the managed object to it), the delegate methods won't fire. I've read about 'mergeChangesFromContextDidSaveNotification' but I don't understand how to synchronize the two manage objects and/or get the delegate methods to be called. Any help would be greatly appreciated. Thank you, Mike

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• Forwarding first responder to UIScrollView unsuccessful

  - by Winston

  Hello, I am trying to create an image cropping bpx whereby the underlying image can be zoomed an scrolled while the cropping "maskview" layer stays the same and the corners can be dragged in any direction. To achieve this, the ImageView is added to a UIScrollView, and this is added to the SelectionViewController.view . I then add the cropping "maskview" layer to the SelectionViewController.view. I did this instead of adding to the scrollview so that the cropping maskview won't be expanded when the underlying image expands. @interface SelectionViewController : UIViewController <UIScrollViewDelegate> { UIImageView *photoview; // Added to self.scrollview MaskedView *maskedview; // Added to self.view UIScrollView *scrollview; // Added to self.view } The maskview has first responder status and responds accordingly. However, the only event I am interested in the maskview is if any of the corners are dragged (this works fine). The problem I want to try to solve is two-fold: If it is a pinch or zoom gesture, I am trying to forward the responder to the UIScrollview using: [self.nextResponder touchesMoved:touches withEvent:event]; The scrollview does not seem to respond. I have confirmed that the self.nextResponder after the maskedview is the SelectionViewController's view itself. From there, it doesn't seem like the UIScrollview responds. It does respond fine if I remove the cropping maskedview. If I zoom in on the underlying image and the cropping maskview rectangle is still the same, I want to now crop the actual zoomed image. Let's say for the upper left hand corner of the crop box, how can I find what the coordinates translates to in the underlying UIImageView now that the image has been zoomed? Any insight into either of these questions would be appreciated. Thank you, Winston

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• Android Keep Activity from Dieing

  - by GuyNoir

  The main Activity I use in my Android application uses a fair amount of memory, meaning that on a less powerful phone, it is susceptible to being killed off when not at the front. Normally this is fine, but it also happens when I am still inside my application, but have a different activity at the top of the stack (such as a preference activity). Obviously it's a problem if my application is killed while the user is still running it. Is there any way to disable the OS's ability to kill off the application for low memory problems? Thanks.

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• How to handle JSON response using SBJSON iPhone?

  - by Jay Mehta

  I am receiving the below response from my web service? Can any one has idea how to handle it using SBJSON? { "match_details" : { "score" : 86-1 "over" : 1.1 "runrate" : 73.71 "team_name" : England "short_name" : ENG "extra_run" : 50 } "players" : { "key_0" : { "is_out" : 2 "runs" : 4 "balls" : 2 "four" : 1 "six" : 0 "batsman_name" : Ajmal Shahzad * "wicket_info" : not out } "key_1" : { "is_out" : 1 "runs" : 12 "balls" : 6 "four" : 2 "six" : 0 "batsman_name" : Andrew Strauss "wicket_info" : c. Kevin b.Kevin } "key_2" : { "is_out" : 2 "runs" : 20 "balls" : 7 "four" : 4 "six" : 0 "batsman_name" : Chris Tremlett * "wicket_info" : not out } } "fow" : { "0" : 40-1 } } I have done something like this:

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• Cross-Page communication in firefox extension

  - by OzBarry

  I have two tabs that my extension uses and I wanted to pass events back and forth between them. I've already developed a Google Chrome extension that does this via the background page api, but there doesn't seem to be an equivalent in firefox. I thought message-manager in the firefox extension docs would do the trick, but the documentation on the object is quite poor. I'd be just as happy with using one of the tabs to control the other if I can't directly import the ideas of a background page from google chrome api. Any help/guidance would be great.

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• Autorotation and multiple view controllers

  - by alku83

  I'm creating an iPad application which should only work in portrait and portait upsidedown modes. For performance reasons in my applicationDidFinishLaunching method I'm creating several viewControllers, and adding them to my main window as subviews. I then hide the ones I don't want to see straight away. There is no tab bar or navigation controller. My problem is that only the first viewController seems to be receiving the rotate calls. I have verified this by swapping around the order in which I add the subviews to the main window and NSLog's. Is there some way I can force all the controllers to receive the calls? Some of my views are designed to lay over the top of another view, but this behind view will not always be the same one - so it seems to make sense to have the overlay view in a separate view controller. Am I doing something fundamentally wrong, and that's why it's not behaving as I would expect? EDIT: The accepted answer for this question seems to indicate the exact problem I'm facing: http://stackoverflow.com/questions/548142/uiviewcontroller-rotate-methods

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• Framework for iPhone wait screens

  - by 4thSpace

  I ran across a small framework some time back that someone put together for iPhone wait screens. But now I can't find any trace of it. Does anyone have a link to it? It may not be a framework as much as a few code snippets. But the guy had it all pre-made. You just needed to implement and specify the type of wait screen you wanted.

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• How can I do metering/average peak power level in OpenAL?

  - by Thaurin

  I'm in the process of switching from AVAudioPlayer to OpenAL using the Finch sound engine. I need to do metering, i.e. get the average peak levels. Finch sound engine does not provide this, and I'm completely new to OpenAL. How can I do this? Any examples would be really appreciated.

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• Best way to store date/time into core data

  - by Dave

  Hi, For each course I am storing the day of the week the class the user has...and the start and end time and room no. What would be the best approach in terms of data type, Like for storing time?? so that when I pull it out I can display it e.g 1:00 PM. Thanks!

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• Win32: Link to HtmlHelp() API documentation?

  - by Ian Boyd

  Can anyone find a link to official MSDN documentation on the HtmlHelp() Win32 API call, and parameters? Microsoft, it seems, is going to great lengths to keep the API call a secret.

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• Android interacting with HTML5 tutorial?

  - by Adam

  I've been looking at using a WebView to display an HTML5 webpage, where the novel features of the mobile device (GPS, compass, accelerometer, camera, etc) can be fed back into the web page. I was wondering if there were any good tutorials showing these functions interacting with the webview. So far I've found ways for the WebView to send javascript commands to the web page, but those interactions haven't been triggered from outside the web view (such as upon receiving an intent from the GPS or accelerometer). Note: The HTML5 Geolocation API is not what I'm interested in. I'm interested in the web page <- WebView interactions, as noted here: http://android-developers.blogspot.com/2008/09/using-webviews.html

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• how to build custom controls for iphone

  - by priyanka

  I am a beginner at iPhone development. I want to make a custom object for interface builder, which the user can drag and drop into their application. How can I do this?

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• CGContextSetRBStrokeColor to replace, not add, for alpha?

  - by Peter Hajas

  I use CGContexts to allow the user to draw in my application, here's an example: CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound); CGContextSetLineWidth(UIGraphicsGetCurrentContext(), size); CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(),r,g,b,a); I want the user to have an "eraser" tool that actually erases - it can't draw white (that would add white to the image, which may not have a white background) or alpha (or else the stroke won't do anything). Is there a way to do this? Perhaps replacing contents of a CGContext or UIImage?

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• how to parse using json

  - by jeeva

  how do parse this data string using json parser {"product": ["collection1", "collection2"]}

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• Disabling home button on iPhone/iPad

  - by alku83

  First of all, I'm completely aware that doing this will get my app rejected by Apple, that it's a poor user experience, and so on. My question is fairly simple, is there a way using private APIs to disable the home button? The aim is to effectively put an iPad into kiosk mode.

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• iPhone: Create MKAnnotation

  - by Nic Hubbard

  Can I create an MKAnnotation, or is it read only? I have coordinates, but I am not finding it easy to manually create an MKAnnotation with using setCoordinate. Ideas?

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• How can get image from a path in to UITAbleViewCell ?

  - by srikanth rongali

  I have the following path in NSString *path1, /Users/srikanth/Library/Application Support/iPhone Simulator/User/Applications/9E6E8B22-C946-4442-9209-75BB0E924434/Documents/snook.jpg How can I show the image snook.jpg. I need it to show in UITableViewCell for cell.imageView.image if path1 has the path. I used the following to get the last part of the path1 , snook.jpg. NSURL *url = [NSURL URLWithString:path1]; NSString *imageString = [url path]; But, url is showing as nil. How can I do it ? Thank you.

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• iPhone UIImage initWithData fails

  - by DD

  Hello all, I'm trying to code up an async image downloader. I use NSURLConnection to get the data into an NSMutableData and use that data once it is complete to initialize a UIImage. I checked the bytes and it downloads the entire image correctly (right number of bytes at least), however; when I call [UIImage imageWithData:data] and then check the properties of the image, it is zero width and a garbage number for height, in fact, same number no matter what the image is. I tried with bunch of different images, png, jpg, different urls, it always downloads the image completely but UIImage can't initialize with that data. What could I be doing wrong here? Thanks.

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• Getting UDID from deactivated device?

  - by Moshe

  I installed iPhone OS 4.0 on my friends iPod Touch 3rd gen and forgot to add the udid to the provisioning portal. The device is locked and I can't seem to find a way to revert it to get the UDID. I don't have XCode here. Using iTunes, how can I revert it?

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• Why my own UIViewController can't detect touch?

  - by Tattat

  I have my OwnViewController, the viewDidLoad is like this: - (void)viewDidLoad { [super viewDidLoad]; UIImage *img = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"myImg" ofType:@"png"]]; CGRect cropRect = CGRectMake(175, 0, 175, 175); CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], cropRect); UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 175, 175)]; imageView.image = [UIImage imageWithCGImage:imageRef]; self.view = imageView; CGImageRelease(imageRef); } It works, and I have detect touches method like this: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"touchesBegan"); } But my UIView can't detect any touches. My Own UIViewController is a subclass of UIViewController. It is a little square view on the IB, why that can't detect touches? thx u.

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• View the Task's activity stack

  - by Mic

  Hi There, I just started developing a simple Android application while I'm still learning its platform. I'm using Eclipse IDE with the ADT plugin 0.9.6 and I need to know if it's possible to view the activity stack that is associated with a Task. Is there any way through the DDMS tool or through any other technique? Thanks in advance for your help/advice. Mic

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• Detecting bad jpeg images

  - by Gerard Cerchio

  The question on validating jpegs on network transfer is very helpful. Could we take this question one step further? What if the image data is incomplete or corrupt from the server? The complete transport works, the MIME type is image/jpeg, the UIImage is constructed and non-nil but the renderer discovers inconsistencies in the data and the log shows "Bad Huffman code" or "premature end of data segment" How would I capture this error before tossing the UIImage into the view context and thereby getting a not-pretty image on the screen? Could I render it to a non-screen context and capture the error?

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