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  • Access location variable in another process

    - by user295944
    I have a locationmanager in my main program which is called HomeViewController which I get the latitude and longitude and store them in LAT and LON. I can use LAT and LON in HomeViewController just fine. Once I go to another controller which is sending pictures and setting properties on flicker I want to use LAT and LON, how do I do this? I tried putting HomeViewController.LAT but obviously that does not work, I'm pretty new to the language so I am confused.

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  • Collision detection on sub views contained in 2 separate parent UIViews?

    - by Chris
    Hi All, I originally setup some conditions using CGRectIntersectsRect for some collision detection which worked fine. In the greater scale of things I only need part of the view to be detected. So originally within the ViewController it was comparing 2 UIviews. Now what I need to do is collision detection of subViews within 2 different UIViews that are contained in a view in which the view controller does the logic. My script is no longer working as I suspect CGRectIntersectsRect only compares frames within the same view? I'll keep digging to confirm this. Any ways around this? Is it possible for example to get the x and y pos of the sub view in relation to the main view that's performing the logic?

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  • Problem with class methods in objective c

    - by Rajashekar
    Hi Guys i have a tableview controller like so, NSString *selectedindex; @interface ContactsController : UITableViewController { NSMutableArray *names; NSMutableArray *phonenumbers; NSMutableArray *contacts; DatabaseCRUD *sampledatabase; } +(NSString *) returnselectedindex; @end in the implementation file i have +(NSString *) returnselectedindex { return selectedindex; } when a row is selected in the tableview i put have the following code. selectedindex = [NSString stringWithFormat:@"%d", indexPath.row]; NSLog(@"selected row is %@",selectedindex); in a different class i am trying to access the selectedindex. like so selected = [ContactsController returnselectedindex]; NSLog(@"selected is %@",selected); it gives me a warning: 'ContactsController' may not respond to '+returnselectedindex' and crashes. i am not sure why. i have used class methods previously lot of times , and never had a problem. any help please. Thank You.

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  • How to read file.xml from resources to NSString with format?

    - by falkon
    Actually I have such a code: NSString *path = [[NSBundle mainBundle] pathForResource: @"connect" ofType: @"xml"]; NSError *error = nil; NSString *data = [NSString stringWithContentsOfFile: path encoding: NSUTF8StringEncoding error: &error]; NSString *message = [NSString stringWithFormat:data, KEY, COUNTRY_ID]; which reads the connect.xml from resources. But on the formating the string (message) APP quits without displaying any errors. How can I read file.xml from resources to NSString with format?

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  • App shuts down when pushing UIbutton!

    - by maralbjo
    For reasons unknown my app shuts down upon pressing a UIButton in the simulator. I have dynamically added my UIView, if that is of relevance. No tracelog or debug information just a rush exit... This is the simple code (.m-file): - (IBAction) testButtonPressed: (id) sender{ NSLog (@"Testbutton pressed."); } From the header file: - (IBAction) testButtonPressed: (id) sender; Pretty basic stuff, but for some reason the app terminates. Help!

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  • Validate NSString

    - by Chris
    I am validating an NSString to ensure that the string does not contain apostrophes. The code I'm using to do this is NSCharacterSet * invalidNumberSet = [NSCharacterSet characterSetWithCharactersInString:@"'"]; NSScanner * scanner = [NSScanner scannerWithString:string]; NSString * scannerResult; [scanner setCharactersToBeSkipped:nil]; [scanner scanUpToCharactersFromSet:invalidNumberSet intoString:&scannerResult]; if(![string isEqualToString:scannerResult]) { return 2; } Returning 2 represents an error. This code works, except for the case where the string is an apostrophe. To get around this issue, I added the following code above the preceding block. if([string isEqualToString:@"'"]); { return 2; } This code is evaluating to true, regardless of the input. I need to either prevent the first block from crashing with the input of ', or get the second block to work. What am I missing?

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  • UIWebView from Navigation Bar button

    - by Dixit
    Im having issue with button on a top right hand side of naviogation bar on iOS: I have a button that can launch a app.html file from app itself and show on top of current view and That popup webview can be minimize with dDone button on it, Im having issues doing this, How can i call UIWebView on top of current view and allow it to launch app.html page from app directory. Currently i have: - (BOOL)webView:(UIWebView *)webViewer shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{ } and this is a button that call that function UIBarButtonItem *showAppMenu = [[UIBarButtonItem alloc] initWithTitle:@"Help" style:UIBarButtonItemStylePlain target:self action:@selector(webView)];

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  • Are UIView's in TableViewCells cause for performance problems?

    - by iFloh
    Hi, I have a UITableView of UITableViewCells that so far performed well. I now aded a simple UIView to my UITableViewCell as a color indicator (backgroundColor only, no other content or attributes). Running the tableview again I realise scrolling is not as smooth as it used to be. The tableView suddenly also takes long time (~1+ secs) to come back again when returning from a subview (e.g. return from the view that gets pushed upon selection of a cell). Any ideas why the added UIView would be problematic? Why are the labels (being a subclass of UIView) not cause for similar issues?

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  • UITableView crashes when adding 2 objects to an empty store, with sections (NSRangeException)

    - by likejy
    UITableView crashes in endUpdate, called by the Managed Object Context "save" method, when: 1- The Core-Data Store is empty 2- The Fetched Result Controller is configured to show sections 3- Two managed objects (or more) have been added to the store When I've searched this situation in google. I've found exactly matched error in this post. It looks like a bug.Is there a any solution to avoid this bug ?

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  • Adding images to an array memory issue

    - by Friendlydeveloper
    Hello all, I'm currently facing the following issue: My app dynamically creates images (320 x 480 pixels) and adds them to a NSMutableArray. I need those images inside that array in order to allow users to browse through them back and forth. I only need to keep the latest 5 images. So I wrote a method like below: - (void)addImageToArray:(UIImage*)theImage { if ([myMutableArray count] < 5) { [myMutableArray addObject:theImage]; } else { [myMutableArray removeObjectAtIndex:0]; [myMutableArray addObject:theImage]; } } This method basically does what it's supposed to do. However, in instruments I can see, that memory usage is permanently incrementing. At some point, even though I do not have any memory leaks, the app finally crashes. The way I see it, XCode does remove the image from my array, but does not release it. Is there a way I can make sure, that the object I want to remove from my array will also get released? Maybe my approach is completely wrong and I need to find a different way. Any help appreciated. Thanks in advance

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  • What does “@public” mean in Objective-C?

    - by Ty
    After reading a question on @private I understand how that works. However, since all variables default to @protected and you cannot really access a variable without defining an accessor, what exactly does @public do? When would you use it?

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  • How do I specify to only display the "Value" of my plist - Right now the whole path loads in my UITe

    - by JoshD
    showDescriptionPath is being passed from the previous Tableview. The text shows up, but the entire path prints in the UITextField instead of just the value of "Description" in my plist. NSString *DescriptionPath = [[NSBundle mainBundle] bundlePath]; NSString *DescriptionInfoPath = [DescriptionPath stringByAppendingPathComponent:showDescriptionInfo]; showDescription.text = [[NSString alloc] initWithFormat:@"%@",DescriptionInfoPath];

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  • How to step inside NSManagedObject; access individual attributes.

    - by user300972
    NSManagedObject *entryObj = [self.fetchedResultsController objectAtIndexPath:indexPath]; entryObj consists of four String attributes. If I NSLog entryObj, I get the information I want. I cannot figure out how to access each of these properties individually. I read a similar post where the solution was to call "entity." I cannot figure out how to use "entity" to access a specific attribute. Any ideas? References? Tutorials? Thanks in advance.

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  • Wrong class type in objective C

    - by Max Hui
    I have a parent class and a child class. GameObjectBase (parent) GameObjectPlayer(child). When I override a method in Child class and call it using [myPlayerClass showNextFrame] It is calling the parent class one. It turns out in the debugger, I see the myPlayerClass was indeed class type GameObjectBase (which is the parent class) How come? GameObjectBase.h #import <Foundation/Foundation.h> #import "cocos2d.h" @class GameLayer; @interface GameObjectBase : NSObject { /* CCSprite *gameObjectSprite; // Sprite representing this game object GameLayer *parentGameLayer; */ // Reference of the game layer this object // belongs to } @property (nonatomic, assign) CCSprite *gameObjectSprite; @property (nonatomic, assign) GameLayer *parentGameLayer; // Class method. Autorelease + (id) initWithGameLayer:(GameLayer *) gamelayer imageFileName:(NSString *) fileName; // "Virtual methods" that the derived class should implement. // If not implemented, this method will be called and Assert game - (void) update: (ccTime) dt; - (void) showNextFrame; @end GameObjectPlayer.h #import <Foundation/Foundation.h> #import "GameObjectBase.h" @interface GameObjectPlayer : GameObjectBase { int direction; } @property (nonatomic) int direction; @end GameLayer.h #import "cocos2d.h" #import "GameObjectPlayer.h" @interface GameLayer : CCLayer { } // returns a CCScene that contains the GameLayer as the only child +(CCScene *) scene; @property (nonatomic, strong) GameObjectPlayer *player; @end When I call examine in debugger what type "temp" is in this function inside GameLayer class, it's giving parent class GameObjectBase instead of subclass GameObjectPlayer - (void) update:(ccTime) dt { GameObjectPlayer *temp = _player; [temp showNextFrame]; }

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