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  • MKMapView doesn't want to call didAddAnnotationViews method

    - by TheLearner
    I am writing a little map kit app but it doesn't want to call the delegate method didaddannotationviews: (void)mapView:(MKMapView *)mv didAddAnnotationViews:(NSArray *)views { //Get the first MKAnnotationView from the views returned MKAnnotationView *annotationView = [views objectAtIndex:0]; //Get the annotation from the first annotation view and save it in a variable which can hold any object as long as it implements mkannotation id <MKAnnotation> mp = [annotationView annotation]; //Create a region MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance([mp coordinate], 250, 250); //As the mapview to animate i.e. display the region [mv setRegion:region animated:YES]; } @interface WhereAmIAppDelegate : NSObject { UIWindow *window; CLLocationManager *locationManager; IBOutlet MKMapView *mapView; IBOutlet UIActivityIndicatorView *activityIndicator; IBOutlet UITextField *locationTitleField; }

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  • Animate move and scale of image UIButton

    - by Sam V
    I want it to be animated so I'm using [UIView beginAnimations] I've tried animating using button.imageView.frame (with image set as imageView) but it only animates the position, the image doesn't get scaled down at all. using hateButton.frame (when image is set as backgroundImage), the backgroundImage gets scaled down but it's not animated. How do I animate-scale a UIButton image?

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  • Store XML data in Core Data

    - by ct2k7
    Hi, is there any easy way of store XML data into core data? Currently, my app just pulls the values from the XML file directly, however, this isn't efficient for XML files which holds over 100 entries, thus storing the data in Core Data would be the best option. XML file is called/downloaded/parsed ever time the app opens. With the Core Data, the XML data would be downloaded ever 3600 seconds or so, and refresh the current data in the core data, to reduce the loading time when opening the app. Any ideas on how I can do this? Having reviewed the developer documentation, it doesn't look very tasty.

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  • How to intercept UIScrollView contentOffset changes from UITableView subclass?

    - by mystify
    Actually, a UITableView is a UIScrollView (inherits from that). Now, I made a UITableView subclass and added this line of code to it: - (void)scrollViewDidScroll:(UIScrollView *)scrollView { NSLog(@"contentOffset: %@", NSStringFromCGPoint(self.contentOffset)); } For some reason this is never called when I scroll the table view. But since UITableView has a delegate property on it's own, I assume that it must implement UIScrollViewDelegate protocol and is the delegate for the scroll view itself. Isn't it? How could I intercept scroll position changes? I want to read them only. Probably I couldn't set them with contentOffset, right?

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  • How can I use removeFromSuperView and dismissModalViewControllerAnimated at same time ?

    - by srikanth rongali
    I have a UIViewController *view1 and another UIViewController *view2; I used presentModelViewController to navigate from view1 to view2. -(void)function:(id)sender { NSLog(@"The libraryFunction entered"); LibraryController *libraryController = [[LibraryController alloc]init]; [self presentModalViewController:libraryController animated:YES]; } I have another view UITableViewController *tableView; I added it to view2 as a subView. -(void)viewDidLoad { RootViewController *rootViewController = [[RootViewController alloc] initWithStyle:UITableViewStylePlain]; UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController]; self.navController = aNavigationController; [aNavigationController release]; [rootViewController release]; navController.view.frame = CGRectMake(0, 0, 320, 460); [self.view addSubview:navController.view]; } In RootViewController.m I have - (void)viewDidLoad { [super viewDidLoad]; self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStyleBordered target:self action:@selector(close:)]; } -(void)close:(id)sender { [self.view removeFromSuperview]; [self dismissModalViewControllerAnimated:YES]; } WhenI touch close button I need to return the view1. So, I removed the tableView by using removeFromSuperView. But, I am not able to get to the first view. I do not get where to use - (void)dismissModalViewControllerAnimated:(BOOL)animated; to navigate to first view1 where I have started ? How can I do this ? Thank You.

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  • UITableView like Contact App

    - by Matthias
    Hi, I try to create an UITableView similar to the Standard Contact App, when selecting a contact (i.e. grouped style). But how do I get some controls at the top or at the bottom of the cells, which scroll with the rest? In the Contact App you have at the top the picture together with the name and at the bottom three buttons. Are these just special customized Cells? Or can you have controls directly there? Thanks for your help! Regards Matthias

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  • UITableViewCellSeparatorStyleNone does not hide blue separator line when selecting in UITableView

    - by clozach
    Before describing the problem, let me first point out that this is a distinct issue from this question. The Problem This screenshot was taken with a break set at tableView:didSelectRowAtIndexPath:, and as you can see in the simulator (far right of the image), there's a single-pixel blue line at the bottom of the selected cell. This is not the design asked for by the client, nor is it how this app used to behave: there should be no separator, even on selection. How I Got Here I'd initially designed this table view using custom UITableViewCell classes with corresponding nib (.xib) files and had no trouble with selections: the separator was hidden as desired. Predictably, scrolling was sluggish due to all the overhead from the view hierarchy, so I reworked the custom cells to use Loren Brichter's fast scrolling solution. Now scrolling is much faster, but I can't get rid of the separator for the life of me. What I've tried At the time of the screenshot above... the table view has "Separator [None]" in IB. the UIViewController that contains the table view has this line in viewDid Load: self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone; As you can see in the screenshot, I inserted some unused lines to prove that separatorStyle is set as desired. Other testing confirms that tableView and self.tableView are equivalent pointers at that same breakpoint. I've also tried setting tableView.separatorColor to black and to clear, all with the same result: the cells look right until a selection is made.

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  • Returning objects with autorelease but I still leak memory

    - by gok
    I am leaking memory on this: my custom class: + (id)vectorWithX:(float)dimx Y:(float)dimy{ return [[[Vector alloc] initVectorWithX:dimx Y:dimy] autorelease]; } - (Vector*)add:(Vector*)q { return [[[Vector vectorWithX:x+q.x Y:y+q.y] retain] autorelease]; } in app delegate I initiate it: Vector *v1 = [[Vector alloc] initVector]; Vector *v2 = [[Vector alloc] initVector]; Vector *vtotal = [[v1 add:v2] retain]; [v1 release]; [v2 release]; [vtotal release]; How this leaks? I release or autorelease them properly. The app crashes immediately if I don't retain these, because of an early release I guess. It also crashes if I add another release.

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  • Creating settings like the Mail settings in the Settings app

    - by cannyboy
    I want to create some settings much like the Mail settings within the Settings app. These allow you to add mail accounts to the end of the table First screen --------------- + | add account | --------------- When they click on the cell, they are pushed onto a new screen where they fill in a few textfields Second screen ----------------- |(cancel) (save)| - the toolbar ----------------- ---------------- | email | ---------------- |another field | ---------------- Then when they go back, they can see the new record as well as the 'add account' cell. First screen --------------- | email 1 | --------------- + | add account | --------------- It need to be in-app rather than within the Settings app. What's the best way to do this?

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  • Creating settings like the Mail settings in the Settings app

    - by cannyboy
    I want to create some settings much like the Mail settings within the Settings app. These allow you to add mail accounts to the end of the table First screen --------------- + | add account | --------------- When they click on the cell, they are pushed onto a new screen where they fill in a few textfields Second screen ----------------- |(cancel) (save)| - the toolbar ----------------- ---------------- | email | ---------------- |another field | ---------------- Then when they go back, they can see the new record as well as the 'add account' cell. First screen --------------- | email 1 | --------------- + | add account | --------------- It need to be in-app rather than within the Settings app. What's the best way to do this?

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  • How to convert an NSArray of NSManagedObjects to NSData

    - by carok
    Hi, I'm new to Objective C and was wondering if anyone can help me. I am using core data with a sqlite database to hold simple profile objects which have a name and a score attribute (both of which are of type NSString). What I want to do is fetch the profiles and store them in an NSData object, please see my code below: NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"GamerProfile" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"Name" ascending:YES]; NSArray *sortDecriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDecriptors]; [sortDescriptor release]; [sortDecriptors release]; NSError *error; NSArray *items = [self.managedObjectContext executeFetchRequest:fetchRequest error:&error]; NSData *data = [NSKeyedArchiver archivedDataWithRootObject:items]; [self SendData:data]; [fetchRequest release]; When I run the code I'm getting the error "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[GamerProfile encodeWithCoder:]: unrecognized selector sent to instance 0x3f4b530'" I presume I have to add an encodeWithCoderClass to my core data NSManagedObject object (GamerProfile) but I'm not sure how to do this even after reading the documentation, My attempt at doing this is below. I'm not sure if I'm going along the right lines with this as get a warning stating "NSManagedObject" may not respond to '-encodeWithCoder'" I would really, really appreciate it if someone could point me in the right direction!! Thanks C Here is the code for my GamerProfile (CoreData NSManagedObject Object) with my attempt at adding an encodeWithCoder method... Header File #import <CoreData/CoreData.h> @interface GamerProfile : NSManagedObject <NSCoding> { } @property (nonatomic, retain) NSString * GamerScore; @property (nonatomic, retain) NSString * Name; - (void)encodeWithCoder:(NSCoder *)coder; @end Code File #import "GamerProfile.h" @implementation GamerProfile @dynamic GamerScore; @dynamic Name; - (void)encodeWithCoder:(NSCoder *)coder { [super encodeWithCoder:coder]; [coder encodeObject:GamerScore forKey:@"GamerScore"]; [coder encodeObject:Name forKey:@"Name"]; }

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  • sudo port install cmake trouble (for MGTwitterEngine)

    - by RexOnRoids
    I am following This Tutorial on installing MGTwitterEngine on my MAC osx 10.6.2. I am stuck on this step: sudo port install cmake it gives me the following error: dlopen(/opt/local/share/macports/Tcl/pextlib1.0/Pextlib.dylib, 10): no suitable image found. Did find: /opt/local/share/macports/Tcl/pextlib1.0/Pextlib.dylib: no matching architecture in universal wrapper while executing "load /opt/local/share/macports/Tcl/pextlib1.0/Pextlib.dylib" ("package ifneeded Pextlib 1.0" script) invoked from within "package require Pextlib 1.0" (file "/opt/local/bin/port" line 40) Rex-MacBook-Pro:~ Rex$ Thus, I cannot use TERMINAL to install YAJL to get my app to build. Help needed. P.S. In terminal preferences, Shells Open With is either /usr/bin/login or /bin/bash YAJL is supposedly installed at /Users/Rex I am using OSX 10.6.2

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  • autoresizingMask changes the size of the UILabel being drawn, just by being set

    - by Kojiro
    I have some custom UITableViewCells that are made programmatically as needed, I want these to resize. However, when I add autoresizingMasks to the UILabels in the cells, they all seem to stretch wider while anchoring to the left side. // This works fine UILabel *aField = [[UILabel alloc] initWithFrame:CGRectMake(60, 2, tableView.frame.size.width - 83, 21)]; UILabel *bField = [[UILabel alloc] initWithFrame:CGRectMake(60, 20, tableView.frame.size.width - 154, 21)]; UILabel *cField = [[UILabel alloc] initWithFrame:CGRectMake(0, 2, tableView.frame.size.width, 21)]; UILabel *dField = [[UILabel alloc] initWithFrame:CGRectMake(tableView.frame.size.width - 116, 11, 93, 21)]; UILabel *eField = [[UILabel alloc] initWithFrame:CGRectMake(tableView.frame.size.width - 116, 11, 93, 21)]; // But when I add this, it draws like the tableview is actually much wider than it really is aField.autoresizingMask = UIViewAutoresizingFlexibleWidth; bField.autoresizingMask = carrierField.autoresizingMask; cField.autoresizingMask = UIViewAutoresizingFlexibleWidth; dField.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin; eField.autoresizingMask = priceField.autoresizingMask; So when the bottom section of code doesn't exist, everything works as expected, but when it does, a lot of the labels start falling off the right side or being stretched to where their centers are far to the right. Am I overlooking something simple?

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  • JQTOUCH, Binding to links pulled in via AJAX, to make another AJAX call? Possible?

    - by nobosh
    Hello. I'm using JQTOUCH using the AJAX example provided in the demo: $('#customers').bind('pageAnimationEnd', function(e, info){ if (!$(this).data('loaded')) { // Make sure the data hasn't already been loaded (we'll set 'loaded' to true a couple lines further down) $('.loadingscreen').css({'display':'block'}); $(this).append($('<div> </div>'). // Append a placeholder in case the remote HTML takes its sweet time making it back load('/mobile/ajax/customers/ .info', function() { // Overwrite the "Loading" placeholder text with the remote HTML $(this).parent().data('loaded', true); // Set the 'loaded' var to true so we know not to re-load the HTML next time the #callback div animation ends $('.loadingscreen').css({'display':'none'}); })); } }); This then returns a nice UL which outputs just fine.. <ul class="edgetoedge"> <li class="viewaction" id="715"> <span class="Title"><a href="/c-view/715/">Lorem Ipsum is simply dummy text of the...</a></span> <div class="meta"> <span class="dateAdded"> 1d ago </span> </div> </li> </ul> This is where I get stuck. How can I then make it so when you click on the link above, it loads the URL wrapped near the class="Title" ? I'd like it to load JQTouch like the first code example. I tried the following two things without success: $('.viewaction').bind('click', function() { alert('wow'); }); $('.viewaction').live('pageAnimationEnd', function(e, info){ }); Thank you!

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  • Removing and then adding MKAnnotations to a MapView is leaving me with a blank MapView

    - by Chris McCall
    A followup to this quesiton: http://stackoverflow.com/questions/2944581/forcing-reload-of-view-when-returning-from-flipsideview-of-utility-application When returning from the flipside view, I'm calling NSArray *annotations = [NSArray arrayWithArray:[mapView annotations]]; [mapView removeAnnotations:annotations]; To remove all the pins from the map (let me know if this isn't the best way to do this). Then: for(Hole *hole in fetchedObjects) { double latitude = [hole.Latitude doubleValue]; cord.latitude = latitude; double longitude = [hole.Longitude doubleValue]; cord.longitude = longitude; WellPlaceMark *placemark = [[WellPlaceMark alloc] initWithCoordinate:cord withWellType:[NSString stringWithString: hole.WellType]]; [mapView addAnnotation:placemark]; } Plus: - (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation{ MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"currentloc"]; if ([annotation isKindOfClass:[MKUserLocation class]]) return nil; if([annotation isKindOfClass:[WellPlaceMark class]]) { ... } annView.animatesDrop=FALSE; return annView; } All of this code seems to be called in the debugger, but when it's finished, I'm presented with a blank map. I've tried zooming out and the pins are nowhere. The map loads up fine on the first try, but once I call removeAnnotations, they never return.

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  • Is NSNumberFormatter the only way to format an NSDecimalNumber?

    - by Paul Alexander
    I'm using an NSDecimalNumber to store money in Core Data. I naively used stringWithFormat: at first to format the value, later realizing that it didn't support NSDecimalNumber and was instead formatting the pointer :(. So after some reading through the docs I learned to use the NSNumberFormatter to get the format I wanted. But this just strikes me as the "hard way". Is there any easier way than this:? NSNumberFormatter * formatter = [[NSNumberFormatter alloc] init]; [formatter setNumberStyle: NSNumberFormatterCurrencyStyle]; priceField.text = [formatter stringFromNumber: ent.price]; [formatter release];

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  • Popover with embedded navigation controller doesn't respect size on back nav

    - by quixoto
    I have a UIPopoverController hosting a UINavigationController, which contains a small hierarchy of view controllers. I followed the docs and for each view controller, I set the view's popover-context size like so: [self setContentSizeForViewInPopover:CGSizeMake(320, 500)]; (size different for each controller) This works as expected as I navigate forward in the hierarchy-- the popover automatically animates size changes to correspond to the pushed controller. However, when I navigate "Back" through the view stack via the navigation bar's Back button, the popover doesn't change size-- it remains as large as the deepest view reached. This seems broken to me; I'd expect the popover to respect the sizes that are set up as it pops through the view stack. Am I missing something? Thanks.

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  • Moving a point along a vector

    - by Chris
    Hello- I have a point defined by x,y and a vector defined by heading, speed. I am attempting to move the point x,y along this vector, at a distance of 'speed'. Below is the code I am currently using: self.x += self.speed * cos(self.heading); self.y += self.speed * sin(self.heading); Heading can be any angle in a full circle - 0 to 2p (0-360 degrees). The problem is the above code: Only moves along the x or y axis when angle is 0-270 for example, when the avatar is facing the top-right corner (45 degrees relative), it moves straight up. Does not move at all when angle is 270-360 heading, speed, X and Y are all doubles, and heading is reported by the user touching a direction-pad in the lower corner. I know the heading is correct because the avatar rotates to the correct direction, it is just the actual movement I am having problems with. Thanks for any help - Chris

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  • Objective-C "miscasting" a string/int using stringWithFormat and %d

    - by user141146
    Hi, I think this is a relatively simple question, but I don't precisely know what's happening. I have a method that tries to build a string using NSString's stringWithFormat It looks like this: NSString *line1 = [NSString stringWithFormat:@"the car is %d miles away", self.ma]; In the above line "self.ma" should be an int, but in my case, I made an error and "self.ma" actually points to a NSString. So, I understand that the line should read NSString *line1 = [NSString stringWithFormat:@"the car is %@ miles away", self.ma]; but my question is what is the %d in the first example doing to my NSString? If I use the debugger, I can see that in once case, "self.ma" equals "32444", but somehow the %d converts it to 1255296. I would've guessed that the conversion of 32444 = 1255296 is some type of base-numbering conversion (hex to dec or something), but that doesn't appear to be the case. Any idea as to what %d is doing to my string? TIA

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  • Trigerring other animation after first ending Animation (Objetive-C)

    - by ludo
    Hi, I have a simple animation which simply modify the position of a button: [UIView beginAnimation:nil context:nil]; [UIView setAnimationsDuration:3.0]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; mybutton.frame = CGREctMake(20, 233, 280, 46); [UIView commitAnimations]; I want to perform some other animations when this one is finish, how to do that?

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  • Is it possible to reset NSURLConnection after providing credentials?

    - by John
    I am calling a REST service that requires basic auth and I respond to the didReceiveAuthenticationChallenge delegate OK NSURLCredential *credential = [[NSURLCredential alloc] initWithUser:self.user password:self.password persistence:NSURLCredentialPersistenceForSession]; [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge]; [credential release]; The Credentials are valid for the Session but I would like for my App to be able to switch between servers and therefore need to "reset" the Session so it asks again for a challenge. I can of course try the option of not storing the credentials for the Session and supply them for each call but this does not seem like a good idea. Any ideas would be appreciated!

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  • UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?

    - by R31n4ld0_
    Hello, guys. If I put only an image in a button and set the imageEdgeInsets more close to the top, the image stays centered and all works as expected: [button setImage:image forState:UIControlStateNormal]; [button setImageEdgeInsets:UIEdgeInsetsMake(-15.0, 0.0, 0.0, 0.0)]; If I put only a text in a button and set titleEdgeInsets more close to the bottom, the text stays centered and all works as expected: [distractionButton setTitle:title forState:UIControlStateNormal]; [distractionButton setTitleEdgeInsets:UIEdgeInsetsMake(0.0, 0.0, -30, 0.0)]; But, if i put the 4 lines together one interfere with other and both lost the center alignment. All my images has 30 pixels widht, and if i put 30 in the left parameter of UIEdgeInsetMake for setTitleEdgeInsets, the text is centered again. The problem is that the image never gets centered because appears that it is dependent of the button.titleLabel size. I already tried many calculations with button size, image size, titleLabel size and never get both perfectly centered. Someone already have the same problem? Thanks in advance.

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