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  • facebook auto loggin

    - by sukitha
    I want to save the login information of Facebook after closing the application. So every time when user opens application, no need to login again. Is done by saving the session object into a plist? I'm using facebook connect. Thanks for the help

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  • parse JSON . I have server response

    - by GauravBOSS
    i am new in JSON Parsing . i have a server response how i can fetch the "Device Name and Id" of 0 index. thanks in Advance { Successfully = ( { 0 = { DeviceName = Tommy; DeviceTypeId = 1; EMEI = xxxxxx; GId = xxxxx; Id = 105; Pet = "<null>"; PetImage = "352022008228784.jpg"; ProtocolId = xxxx; SimNo = xxxxx; }; } ); }

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  • What significant progress have we made in Rapid Application Development?

    - by Frank Computer
    Since the introduction of OOPL's and event-driven programming, I feel like developing an application has become harder and more tedious, when it should have been the other way around! We should have development tools which can generate prototype apps which can be quickly and easily customized into sophisticated applications, even by novice users! We really need new ideas in this area of software development and I would like to know of any good ideas. If we can't really find them, then we should ask "Where did we miss the boat?.. Why?.. and What should we be doing?"

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  • Core-Plot crash only in Release Configuration

    - by denbec
    Hey everyone, I really don't know a solution or even an idea to get around the following failure. It only happens in Release Configuration on the Device - Simulator and Debug Configuration work fine. It also only appears on the second launch. So if I have the phone connected to my mac, build the application and run it, everything works fine. If I then close the app and restart, it crashes. After long search, it seems that the error comes from the following line: x.majorIntervalLength = CPDecimalFromFloat(2.0f); The code before: CPLayerHostingView *chartView = [[CPLayerHostingView alloc] initWithFrame:CGRectMake(0, 0, 320, 160)]; [self addSubview:chartView]; // create an CPXYGraph and host it inside the view CPTheme *theme = [CPTheme themeNamed:kCPPlainWhiteTheme]; CPXYGraph *graph = (CPXYGraph *)[theme newGraph]; chartView.hostedLayer = graph; graph.paddingLeft = 20.0; graph.paddingTop = 10.0; graph.paddingRight = 10.0; graph.paddingBottom = 20.0; CPXYPlotSpace *plotSpace = (CPXYPlotSpace *)graph.defaultPlotSpace; plotSpace.xRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(0) length:CPDecimalFromFloat(100)]; plotSpace.yRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(0) length:CPDecimalFromFloat(10)]; CPXYAxisSet *axisSet = (CPXYAxisSet *)graph.axisSet; CPXYAxis *x = axisSet.xAxis; x.majorIntervalLength = CPDecimalFromFloat(2.0f); If I comment the last line, everything works fine (off course the interval length is not correct). I would appreciate any help! Thanks in advance!

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  • Log the method name in objective-C?

    - by vodkhang
    Currently, we are defining ourselves an extended log mechanism to print out the class name and the source line number of the log. #define NCLog(s, ...) NSLog(@"<%@:%d> %@", [[NSString stringWithUTF8String:__FILE__] lastPathComponent], \ __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__]) For example, when I call NCLog(@"Hello world"); The output will be: Hello world Now I also want to log out the method name like: Hello world So, this would make our debugging become easier when we can know which method is getting called. I know that we also have XCode debugger but sometimes, I also want to do debugging by logging out.

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  • How to solve the delay problem in animation of sprites ?

    - by srikanth rongali
    My problem is, I did coding for a sprite. It should change it should change it's image from( 1, 2, 3). It should look like count down time to start a game. 1, 2, 3 are 3 png images. But the images are not displayed in equal intervals of time. I mean time between (1 - 2), (2 - 3) is not same. It is random. Please help me with my problem. Help me if there is better solution than what I am doing.(My animation should be like, before any game starts we see count down 1 then 2 then 3 then GO). -(id)init { if((self = [super init])) { [[CCDirector sharedDirector] setAnimationInterval:60.0/60]; [[CCDirector sharedDirector] setDisplayFPS:NO]; CCAnimation* numberAnimation = [CCAnimation animationWithName:@"countDown" delay: 60.0/60]; for( int i=1;i<4;i++) [numberAnimation addFrameWithFilename: [NSString stringWithFormat:@"number_%02d.png", i]]; id numberAction = [CCAnimate actionWithAnimation: numberAnimation restoreOriginalFrame:NO]; id action2 = [CCFadeOut actionWithDuration:0.5f]; CCSprite *number; number = [CCSprite spriteWithFile:@"number.png"]; .... } }

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  • Fade animation UITableViewCell

    - by Tomas
    Hi everyone, I have a UITableViewController that populates a UITableView with some data that I pull off the net. The data for each cell consists also of an image used as background, which I'm downloading in a separated NSOperation added to a NSOperationQueue with a MaxConcurrentOperationCount set to 4. As long as the image is not downloaded I'm showing a generic placeholder which I would like to replace (fading out/fading in) with the downloaded image once it's being successfully downloaded. I'm using the following code placed inside the cellForRowAtIndexPath of the UITableViewController. [UIView beginAnimations:@"fade" context:nil]; [UIView setAnimationBeginsFromCurrentState:YES]; [UIView setAnimationDuration:3.0]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; cell.placeholderUIImage.alpha = 0.0; cell.backgroundUIImage.alpha = 1.0; [UIView commitAnimations]; This is unfortunately just working randomly for a couple of rows, since for the most the background image is set instantly, as if the animation started on one cell would have been "overwritten" by the next call of beginAnimations.

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  • UTF-8 conversion

    - by leachianus
    Hey guys, I am grabbing a JSON array and storing it in a NSArray, however it includes JSON encoded UTF-8 strings, for example pass\u00e9 represents passé. I need a way of converting all of these different types of strings into the actual character. I have an entire NSArray to convert. Or I can convert it when it is being displayed, which ever is easiest. I found this chart http://tntluoma.com/sidebars/codes/ is there a convenience method for this or a library I can download? thanks, BTW, there is no way I can find to change the server so I can only fix it on my end...

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  • MonoTouch - foreach vs for loops (performance)

    - by ifwdev
    Normally I'm well aware that a consideration like this is premature optimization. Right now I have some event handlers being attached inside a foreach loop. I am wondering if this style might be prone to leaks or inefficient memory use due to closures being created. Is there any validity to this thinking?

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  • How can I flip a UITableView?

    - by Sheehan Alam
    I am trying to flip a UITableViewController but I don't think I am doing it properly: LeaderBoardTableViewController* leaderBoardView = [[[LeaderBoardTableViewController alloc] initWithNibName:@"LeaderBoardTableViewController" bundle:nil]autorelease]; //[self.navigationController pushViewController:leaderBoardView animated:YES]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:[self view] cache:YES]; [self.view addSubview:leaderBoardView]; [UIView commitAnimations]; I believe the culprit is in the line: [self.view addSubview:leaderBoardView]; But am not sure how to resolve.

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  • Adding outlets to UIButton

    - by alltom
    For quickly mocking up UI, I'd like to be able to drag buttons onto a view in interface builder, then drag a connection from that button to the view that should appear when you click it. A subclass of UIButton is a little inconvenient to use in IB, so I'd prefer to add the behavior to UIButton itself. Unfortunately, it seems like outlets created in a category aren't visible in IB: @interface UIButton (myextensions) { IBOutlet UIView *outletDestination; } @end Can extra outlets be added this way?

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  • Email from an app, but not use a a pop up controller, just text inside a text box.

    - by Sam Jarman
    Hey is there any way to send whats in a text view (im trying to make a suggestion box) to my email address? example user types in the box " I think you should add twitter support" then that is sent in the background to my email address [email protected] then a message is popped up on the screen saying "suggestion sent" just an example of what i mean Any ideas, tutorial links would be greatly appreciated guys Thanks

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  • Drawing path by Bezier curves

    - by OgreSwamp
    Hello. I have a task - draw smooth curve input: set of points (they added in realtime) current solution: I use each 4 points to draw qubic Bezier curve (1 - strart, 2 and 3rd - control points, 4- end). End point of each curve is start point for the next one. problem: at the curves connection I often have "fracture" (angle) Can you tell me, how to connect my points more smooth? Thanks!

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  • UIScrollView Infinite Scrolling

    - by Ben Robinson
    I'm attempting to setup a scrollview with infinite (horizontal) scrolling. Scrolling forward is easy - I have implemented scrollViewDidScroll, and when the contentOffset gets near the end I make the scrollview contentsize bigger and add more data into the space (i'll have to deal with the crippling effect this will have later!) My problem is scrolling back - the plan is to see when I get near the beginning of the scroll view, then when I do make the contentsize bigger, move the existing content along, add the new data to the beginning and then - importantly adjust the contentOffset so the data under the view port stays the same. This works perfectly if I scroll slowly (or enable paging) but if I go fast (not even very fast!) it goes mad! Heres the code: - (void) scrollViewDidScroll:(UIScrollView *)scrollView { float pageNumber = scrollView.contentOffset.x / 320; float pageCount = scrollView.contentSize.width / 320; if (pageNumber > pageCount-4) { //Add 10 new pages to end mainScrollView.contentSize = CGSizeMake(mainScrollView.contentSize.width + 3200, mainScrollView.contentSize.height); //add new data here at (320*pageCount, 0); } //*** the problem is here - I use updatingScrollingContent to make sure its only called once (for accurate testing!) if (pageNumber < 4 && !updatingScrollingContent) { updatingScrollingContent = YES; mainScrollView.contentSize = CGSizeMake(mainScrollView.contentSize.width + 3200, mainScrollView.contentSize.height); mainScrollView.contentOffset = CGPointMake(mainScrollView.contentOffset.x + 3200, 0); for (UIView *view in [mainContainerView subviews]) { view.frame = CGRectMake(view.frame.origin.x+3200, view.frame.origin.y, view.frame.size.width, view.frame.size.height); } //add new data here at (0, 0); } //** MY CHECK! NSLog(@"%f", mainScrollView.contentOffset.x); } As the scrolling happens the log reads: 1286.500000 1285.500000 1284.500000 1283.500000 1282.500000 1281.500000 1280.500000 Then, when pageNumber<4 (we're getting near the beginning): 4479.500000 4479.500000 Great! - but the numbers should continue to go down in the 4,000s but the next log entries read: 1278.000000 1277.000000 1276.500000 1275.500000 etc.... Continiuing from where it left off! Just for the record, if scrolled slowly the log reads: 1294.500000 1290.000000 1284.500000 1280.500000 4476.000000 4476.000000 4473.000000 4470.000000 4467.500000 4464.000000 4460.500000 4457.500000 etc.... Any ideas???? Thanks Ben.

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  • dealloc on Background Thread

    - by Mark Brackett
    Is it an error to call dealloc on a UIViewController from a background thread? It seems that UITextView (can?) eventually call _WebTryThreadLock which results in: bool _WebTryThreadLock(bool): Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a secondary thread. Background: I have a subclassed NSOperation that takes a selector and a target object to notify. -(id)initWithTarget:(id)target { if (self = [super init]) { _target = [target retain]; } return self; } -(void)dealloc { [_target release]; [super dealloc]; } If the UIViewController has already been dismissed when the NSOperation gets around to running, then the call to release triggers it's dealloc on a background thread.

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  • Storing an subtitle on an annotation with NSUserDefualts

    - by Krismutt
    Hey everybody! Basically: what i try to do is to save the street address of an annotation so that when I quit the application and launch it again the street address still will be there...see the following code: SavePosition.m -(NSString *)subtitle{ if (!subtitle) { return @"Ingen gata i närheten"; } else { return subtitle; } } -(NSString *)title{ return @"Sparad Position"; } -(id)initWithCoordinate:(CLLocationCoordinate2D) coor{ self.coordinate=coor; NSLog(@"%f,%f",coor.latitude,coor.longitude); return self; } - (void)setCoordinate:(CLLocationCoordinate2D)koor { MKReverseGeocoder *geocoder = [[[MKReverseGeocoder alloc] initWithCoordinate:koor] autorelease]; geocoder.delegate = self; coordinate = koor; [geocoder start]; } - (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error { NSLog(@"fail %@", error); } - (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark { self.subtitle = [placemark.addressDictionary valueForKey:@"Street"]; } -(void)applicationWillTerminate:(UIApplication *)application { NSUserDefaults *userDef = [NSUserDefaults standardUserDefaults]; [userDef setValue:subtitle forKey:@"SavedAddress"]; [userDef setBool:YES forKey:@"Street"]; [userDef synchronize]; } @end mainViewController.m -(void)viewDidLoad { [super viewDidLoad]; NSUserDefaults *userDef = [NSUserDefaults standardUserDefaults]; if ([userDef boolForKey:@"sparadKoordinat-existerar"]) { CLLocationCoordinate2D savedCoordinate; savedCoordinate.latitude = [userDef doubleForKey:@"sparadKoordinat-latitud"]; savedCoordinate.longitude = [userDef doubleForKey:@"sparadKoordinat-longitud"]; SparaPosition *position=[[SparaPosition alloc] initWithCoordinate:savedCoordinate]; [mapView addAnnotation:position]; savedPosition = savedCoordinate; raderaSparad.enabled=YES; skickaMaps.enabled=YES; mStoreLocationButton.enabled=NO; friZoom = NO; NSString *savedAddress = [[NSUserDefaults standardUserDefaults] objectForKey:@"SavedAddress"]; if (savedAddress) { savedAddress.subtitle = [userDef valueForKey:@"Street"]; // what code should I add here? } MKCoordinateRegion region; region.center.latitude = savedCoordinate.latitude; region.center.longitude= savedCoordinate.longitude; MKCoordinateSpan span; span.latitudeDelta = 0.01; span.longitudeDelta = 0.01; region.span = span; region = [mapView regionThatFits:region]; [mapView setRegion:region animated:YES]; [mapView setRegion:region animated:TRUE]; }

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  • Load array from plist in Documents Directory

    - by Florent
    Hi all ! I use to load plist which are in my main Bundle (Ressource folder) into an array using : NSString *path = [[[NSBundle mainBundle] resourcePath]stringByAppendingPathComponent:nomPlist ]; NSMutableArray *tmpQuestion = [[NSArray alloc] initWithContentsOfFile:path]; arrayQuestion = [ [NSArray alloc] initWithArray:tmpQuestion]; [tmpQuestion release]; since i decide to change the content of my plist and that main bundle is read only how can i make this array loading plist from the Documents directory of my app ? ? thanks to all

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  • How to: Save order of tabs when customizing tabs in UITabBarController

    - by Canada Dev
    I am having problems finding any other information than the docs for how to save the tab order for my UITabBarController, so that the user's customization is saved for next app launch. I have searched online, but have been unable to find any blog posts or articles that goes through the proper code for doing this. I realize I have to use the delegate methods for the UITabBarController (didEndCustomizingViewControllers:) but I am not sure how I best approach persistance in terms of saving the state of the order the user wants the tabs in. Can someone post some code, point me in the right direction or perhaps you have a link for something saved? :) Thanks

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  • Enable UIBarButtonItem if multiple UITextFields are all populated

    - by CrystalSkull
    I have 3 UITextFields in a grouped UITableView and am trying to figure out the correct logic to only have my 'Save' UIBarButtonItem enabled when none of the UITextFields are empty. I'm currently using the - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string UITextField delegate method to detect changes to the field character by character, but it is providing inconsistent results. Any ideas?

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