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  • Zoom to fit region for all annotations - ending up zooming in between annotations

    - by Krismutt
    Hey everybody!! I have a problem with fitting all my annotations to the screen... sometimes it shows all annotations, but some other times the app is zooming in between the two annotations so that none of them are visible... I want the app to always fit the region to the annotations and not to zoom in between them... what do I do wrong? if ([mapView.annotations count] == 2) { CLLocationCoordinate2D SouthWest = location; CLLocationCoordinate2D NorthEast = savedPosition; NorthEast.latitude = MAX(NorthEast.latitude, savedPosition.latitude); NorthEast.longitude = MAX(NorthEast.longitude, savedPosition.longitude); SouthWest.latitude = MIN(SouthWest.latitude, location.latitude); SouthWest.longitude = MIN(SouthWest.longitude, location.longitude); CLLocation *locSouthWest = [[CLLocation alloc] initWithLatitude:SouthWest.latitude longitude:SouthWest.longitude]; CLLocation *locNorthEast = [[CLLocation alloc] initWithLatitude:NorthEast.latitude longitude:NorthEast.longitude]; CLLocationDistance meter = [locSouthWest distanceFromLocation:locNorthEast]; MKCoordinateRegion region; region.span.latitudeDelta = meter / 111319.5; region.span.longitudeDelta = 0.0; region.center.latitude = (SouthWest.latitude + NorthEast.latitude) / 2.0; region.center.longitude = (SouthWest.longitude + NorthEast.longitude) / 2.0; region = [mapView regionThatFits:region]; [mapView setRegion:region animated:YES]; [locSouthWest release]; [locNorthEast release]; } Any ideas? NEW CODE (by Satya) -(void)zoomToFitMapAnnotations:(MKMapView*)mapview{ if([mapview.annotations count] == 0) return; CLLocationCoordinate2D topLeftCoord; topLeftCoord.latitude = -90; topLeftCoord.longitude = 180; CLLocationCoordinate2D bottomRightCoord; bottomRightCoord.latitude = 90; bottomRightCoord.longitude = -180; for(FSMapAnnotation* annotation in mapView.annotations) { topLeftCoord.longitude = fmin(topLeftCoord.longitude, location.longitude); topLeftCoord.latitude = fmax(topLeftCoord.latitude, location.latitude); bottomRightCoord.longitude = fmax(bottomRightCoord.longitude, savedPosition.longitude); bottomRightCoord.latitude = fmin(bottomRightCoord.latitude, savedPosition.latitude); } MKCoordinateRegion region; region.center.latitude = topLeftCoord.latitude - (topLeftCoord.latitude - bottomRightCoord.latitude) * 0.5; region.center.longitude = topLeftCoord.longitude + (bottomRightCoord.longitude - topLeftCoord.longitude) * 0.5; region.span.latitudeDelta = fabs(topLeftCoord.latitude - bottomRightCoord.latitude) * 1.1; // Add a little extra space on the sides region.span.longitudeDelta = fabs(bottomRightCoord.longitude - topLeftCoord.longitude) * 1.1; // Add a little extra space on the sides region = [mapView regionThatFits:region]; [mapView setRegion:region animated:YES]; } Can't get it to work... FSMapAnnoation is undeclared... how do I fix this?

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  • UIWebView NSURLRequestReloadIgnoringLocalCacheData doesn't actually ignore the cache

    - by dodeskjeggen
    I have a UIWebView object, with the caching-policy specified as: NSURLRequestReloadIgnoringLocalCacheData This should ignore whatever objects are in the local cache and retrieve the latest version of a site from the web. However, after the first load of the site (10 resources in trace, HTTP GET), all subsequent loads of the site only retrieve a small subset of resources (3 resources in trace, HTTP GET). The images all appear to be loaded from some local source. I have confirmed that my sharedURLCache has a memory usage of 0 bytes, and a disk usage of 0 bytes. Whenever the process starts fresh, the full version of the site is retrieved again. This leads me to believe that these resources are being stored in an in-memory cache, but as I noted before, [[NSURLCache sharedURLCache] currentMemoryUsage] returns 0. I have also tried explicitly removing the cached response for my request, but this seems to have no effect. What gives?

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  • Objective-c Novice - Needs help with string with variable

    - by user544006
    Im trying to get my label to print out "your score is ." All i can find online is how to print using printf: int score=2; printf("You scored %i", score); But this does not work when using the setText method. I have also tried labelAnswer.setText:("You scored %i", score); [labelAnswer setText:("You scored %i", score)]; But these do not work. I get an error: "request for member in something not a structure or union" Can anyone help?

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  • UIButton on UIScrollView can't work

    - by william-hu
    Hi, i used UILabel *myLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 180, 180)]; myLabel.backgroundColor = [UIColor greenColor]; [self.view addSubview:myLabel]; UIButton *myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [self addTarget:self action:@selector(show) forControlEvents:UIControlEventTouchDown]; myButton.frame = CGRectMake(80.0, 120.0, 30, 30); myButton.showsTouchWhenHighlighted = YES; [self addSubview:myButton]; in this way the button works(call show:), but use [myLabel addSubview:myButton]; the button can't work. who can tell me why? I have tried to change the target to myLabel, can't work too.So who can tell me,thank you. By the way , i want to use the button on the UILabel,and the UILabel on UIScrollView.Thanks a lot!

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  • NSFetchedResultsController when navigating from one UITableViewController to another ...

    - by wgpubs
    In my core data model I have a Person entity that has a "to many" relationship a Course entity (I also have an inverse "to one" relationship from Course to Person). Now I have a subclassed UITableViewController that uses a NSFetchedResultsController to display Person objects which works fine. I have this set up so that when you click on a Person it publishes another subclassed UITableViewController that uses a NSFetchedController as well to display the Courses associated to the person. PROBLEM: I get this exception whenever I click on the Person and attempt to display the Course UITableViewController ... "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'keypath name not found in entity '" Any ideas on how to resolve or troubleshoot? The code between the two ViewControllers is almost identical except for the NSFetchedResultsController being configured for "Person" entities in one and "Course" entities in another

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  • Getting sectionNameKeyPath to work with CoreData/UITableViewController

    - by Elon
    In my AppDelegate I create an NSFetchedResultsController with sectionNameKeyPath set to @"group". In viewWillAppear in my TableViewController I performFetch, then call a method called findGroups. findGroups does some complicated analysis of the entire dataset to identify groups, then sets the "group" transient property on each object to the correct string value. I can see with NSLog that these are all set correctly and in coherent groups. But, tinker as I may, my cells are shown in a single section with the title of the first group. Any ideas?

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  • Progressive download using Matt Gallagher's audio streamer

    - by Fernando Valente
    I'm a completely n00b when talking about audio. I'm using Matt Gallagher's audio streamer on my radio app. How may I use progressive download? Also, ExtAudioFile is a good idea too :) Edit: Used this: length = CFReadStreamRead(stream, bytes, kAQDefaultBufSize); if(!data) data =[[NSMutableData alloc] initWithLength:0]; [data appendData:[NSData dataWithBytes:bytes length:kAQDefaultBufSize]]; Now I can save the audio data using writeToFile:atomically: NSData method, but the audio won't play. Also, if I try to load it on a AVAudioPlayer, I get an error.

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  • Decode received multipart/form-data request in Cocoa

    - by Snej
    Hi: I wonder if there is any possibility to explicitly decode an incoming multipart/form-data POST request. Is there any lib to handle this safely? Several files are embedded in this request and I want to save these files individually. NSData *data = [(id)CFHTTPMessageCopyBody(request) autorelease]; Content-Type: multipart/form-data; boundary=0xKhTmLbOuNdArY The data content is: --0xKhTmLbOuNdArY Content-Disposition: form-data; name="file1"; filename="fileName1.extension" Content-Type: application/octet-stream; charset=utf-8 ......... --0xKhTmLbOuNdArY Content-Disposition: form-data; name="file2"; filename="fileName2.extension" Content-Type: application/octet-stream; charset=utf-8 ......... --0xKhTmLbOuNdArY--

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  • AndroidManifest from Jars

    - by Jeremy Edwards
    Is it possible to have an AndroidManifest.xml and or resource files in a Jar file and import that into a executable Android project? My goal is to provide styles, resources, and services from a jar library that can be accessed from a main android project for my common tools.

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  • UiPickerView change font color according data

    - by Fulkron
    I'm using a pickerView with multiple components related to several fields in a Database (CoreData). Is it possible to change the fontcolor for a specific component according the presence of data in the DB ? For example the field in the DB is null the component font color should be RED otherwise black. Any help will be appreciated ! Dario ================== Thanks Kenny, I have to apply to a single UIPicker only. So I', returning the view parametere (without modificatiosn). The result is all the pickers show empty rows. Thanks for help ! Here you will find the code fragment: - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view { if (pickerView == tipoPk){ UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100,30)]; label.textColor = [UIColor redColor]; switch (component) { case PK_Tipo: label.text = [tipoArray objectAtIndex:row]]; break; case PK_Settore: label.text = [settoreArray objectAtIndex:row]]; break; default: break; } return label; } else { return view; // <==== return view for non related pickerviews , but no rows shown } }

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  • Converting from RGB to HSL with Objective C

    - by treeba
    I'm quite new to objective c but have been programming for a while. I started creating a function that would convert from RGB to HSL and back again but I get a feeling it is way too long and headed in the wrong direction. Does anyone know of a simple way to perform this conversion?

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  • UIView autoresize problem

    - by Chonch
    Hey, I have a UIView with several subviews: one UIImageView and a couple of UIViews. When I change the frame property of the view, the imageView's size changes accordingly, but the rest of the subviews remain in their original size! I can't figure out what I'm doing wrong. Can anybody help? Thanks,

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  • TwitPic Multiple image upload

    - by Tim Karen
    Has anybody experienced Timeout error with TwitPic API using ASIFormDataRequest when uploading multiple images? Status updates without images are fine. I was trying to upload the exact same 2 images. The first request went through fine, but the second one was timeout. It also happens when multiple images are uploaded, some went through, but some didn't. It's happening randomly and I have no idea how to debug it anymore.

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  • Create new UIImage by adding shadow to existing UIImage

    - by Tom Irving
    I've taken a look at this question: http://stackoverflow.com/questions/962827/uiimage-shadow But the accepted answer didn't work for me. What I'm trying to do is take a UIImage and add a shadow to it, then return a whole new UIImage, shadow and all. This is what I'm trying: - (UIImage*)imageWithShadow { CGColorSpaceRef colourSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef shadowContext = CGBitmapContextCreate(NULL, self.size.width, self.size.height + 1, CGImageGetBitsPerComponent(self.CGImage), 0, colourSpace, kCGImageAlphaPremultipliedLast); CGColorSpaceRelease(colourSpace); CGContextSetShadow(shadowContext, CGSizeMake(0, -1), 1); CGContextDrawImage(shadowContext, CGRectMake(0, 0, self.size.width, self.size.height), self.CGImage); CGImageRef shadowedCGImage = CGBitmapContextCreateImage(shadowContext); CGContextRelease(shadowContext); UIImage * shadowedImage = [UIImage imageWithCGImage:shadowedCGImage]; CGImageRelease(shadowedCGImage); return shadowedImage; } The result is that I get exactly the same image as before I put it through this method. I am doing this the correct way, or is there something obvious I'm missing?

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  • Changing UIImageView animation speed

    - by Nikolas Stephan
    I am using the UIImageView to animate a bunch of images. I know that I can change the speed by altering animationDuration, but that doesn't seem to take effect until the animation is restarted. My problem is that beside not really wanting to have to restart the animation as this limits me to only being able to change the speed once per cycle, there also doesn't seem to be a way to find out what frame is currently being shown and I would therefore have to rely on a timer to "guess" which one it is. So my question is whether there is a way to change the speed without restarting the animation and if not is there some way I could avoid the aforementioned problem? I'm not too keen to write my own animation class, but may end up having to if there isn't a nicer solution.

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  • how to generate an event

    - by user262325
    Hello everyone I created a subclass from UIView #import <UIKit/UIKit.h> @interface MeeSelectDropDownView : UIView { UILabel *mainText; UIImage *bgImg; UIImageView *bgView; UIImageView *originView; NSMutableArray *labelArray; int selectedItem; BOOL inSelectTag; float _defaultHeight; } @property (nonatomic , retain) UIImage *bgImg; @property (nonatomic , retain) UIImageView *bgView; @property (nonatomic , retain) NSMutableArray *labelArray; @property (nonatomic , retain) UIImageView *originView; @property (nonatomic , retain) UILabel *mainText; @property (nonatomic , readonly) int selectedItem; - (void) setViewHeight:(float)aheight; -(void) showDropList; -(void) hiddenDropList; -(void) setStringByArray:(NSArray*)array; -(void)hiddenLabels { for(UILabel *aLabel in labelArray){ [aLabel removeFromSuperview]; } } Is it possible to generate an Event from function 'hiddenLabels' to inform and do somethings Thanks interdev

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  • UIViewController not loading a UIView

    - by Cosizzle
    Hey, I'm playing around with a script my teacher provided for a table based application. However I can't seem to get my own view to load. Files: SubViewOneController (which is a sub view, also has a nib) TapViewController (Custom UIView I created and want to add to a cell) RootViewController (Main controller which loads in the views) SimpleNavAppDelegate How it works: Within the RootViewController, there's an NSArray that holds NSDictionary objects which is declared in the -(void)awakeFromNib {} method - (void)awakeFromNib { // we'll keep track of our views controllers in this array views = [[NSMutableArray alloc] init]; // when using alloc you are responsible for it, and you will have to release it. // ==================================================================================================== // ==================================================================================================== // LOADING IN CUSTOM VIEW HERE: // allocate a set of views and add to our view array as a dictionary item TapViewController *tapBoardView = [[TapViewController alloc] init]; //push onto array [views addObject:[NSDictionary dictionaryWithObjectsAndKeys: @"Tab Gestures", @"title", tapBoardView, @"controller", nil]]; [tapBoardView release]; //release the memory // ==================================================================================================== // ==================================================================================================== SubViewOneController *subViewOneController = [[SubViewOneController alloc] init]; // This will set the 2nd level title subViewOneController.title = @"Swipe Gestures"; //set it's title //push it onto the array [views addObject:[NSDictionary dictionaryWithObjectsAndKeys: @"Swipe Gestures", @"title", subViewOneController, @"controller", nil]]; [subViewOneController release]; //release the memory } Later on I set the table view: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // OUTPUT -- see console NSLog(@"indexPath %i", indexPath.row); // OUTPUT: tapController: <TapViewController: 0x3b2b360> NSLog(@"view object: %@", [views objectAtIndex:indexPath.row]); // OUTPUT: view object: controller = <TapViewController: 0x3b0e290>; title = "Tab Gestures"; // ----- Hardcoding the controller and nib file in does work, so it's not a linkage issue ------ // UNCOMMENT TO SEE WORKING -- comment below section. //TapViewController *tapContoller = [[TapViewController alloc] initWithNibName:@"TapBoardView" bundle:nil]; //NSLog(@"tapController: %@", tapContoller); //[self.navigationController pushViewController:tapContoller animated:YES]; // ----- Random Tests ----- //UIViewController *targetViewController = [[views objectAtIndex: 0] objectForKey:@"controller"]; // DOES NOT WORK // LOADS THE SECOND CELL (SubViewOneController) however will not load (TapViewController) UIViewController *targetViewController = [[views objectAtIndex: indexPath.row] objectForKey:@"controller"]; NSLog(@"target: %@", targetViewController); // OUTPUT: target: <TapViewController: 0x3b0e290> [self.navigationController pushViewController:targetViewController animated:YES]; } Reading the comments you should be able to see that hardcoding the view in, works - however trying to load it from the View NSArray does not work. It does however contain the object in memory, seeing that NSLog proves that. Everything is linked up and working within the TapViewController nib file. So ya, im kinda stuck on this one, any help would be great! Thanks guys

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  • Does Multiple NSURLConnection make delay of performance?

    - by oksk
    Hi all~. I made a multi files downloader. I implemented NSURLConnection using NSOperationQueue. NSOpetationQueue has many NSURLConnection operations. and, set MaxConcurrentOperationCount to 10. I thought my code is right, But after run the project, it was wrong. there are some connection error has occured. files url were right. and file download was completed. but downloading files, occur "timed out" error. It is so serious. I tested it with 8 files, and those total size is only 3M. But total download time is 2minutes ~!!! one file download spends only a few second. (2~3 s) but multi files download occur many overburden!! (2 minutes) I don't know why it is... Do Anyone know what reason is?

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