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  • Text being printed twice in uitableview

    - by user337174
    I have created a uitableview that calculates the distance of a location in the table. I used this code in cell for row at index path. NSString *lat1 = [object valueForKey:@"Lat"]; NSLog(@"Current Spot Latitude:%@",lat1); float lat2 = [lat1 floatValue]; NSLog(@"Current Spot Latitude Float:%g", lat2); NSString *long1 = [object valueForKey:@"Lon"]; NSLog(@"Current Spot Longitude:%@",long1); float long2 = [long1 floatValue]; NSLog(@"Current Spot Longitude Float:%g", long2); //Getting current location from NSDictionary CoreDataTestAppDelegate *appDelegate = (CoreDataTestAppDelegate *) [[UIApplication sharedApplication] delegate]; NSString *locLat = [NSString stringWithFormat:appDelegate.latitude]; float locLat2 = [locLat floatValue]; NSLog(@"Lat: %g",locLat2); NSString *locLong = [NSString stringWithFormat:appDelegate.longitude]; float locLong2 = [locLong floatValue]; NSLog(@"Long: %g",locLong2); //Location of selected spot CLLocation *loc1 = [[CLLocation alloc] initWithLatitude:lat2 longitude:long2]; //Current Location CLLocation *loc2 = [[CLLocation alloc] initWithLatitude:locLat2 longitude:locLong2]; double distance = [loc1 getDistanceFrom: loc2] / 1600; NSMutableString* converted = [NSMutableString stringWithFormat:@"%.1f", distance]; [converted appendString: @" m"]; It works fine apart from a problem i have just discovered where the distance text is duplicated over the top of the detailed text label when you scroll beyond the height of the page. here's a screen shot of what i mean. Any ideas why its doing this?

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  • Same object in different nib files?

    - by Michael
    View1 object, which is UIViewController subclass is the same object as File's Owner of View1 nib. So I should manually set the class in both places, one in MainWindow and another in View1 nib files? This sound artificial to me... Either I'm doing something wrong or there has to be better way.

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  • Removing random object from parent CCprite

    - by Natty
    probably this is a simple problem to solve, since I'm quite new. I have a scene with a waiter holding a tray of food (the food is a random CCSprite choosen from an array) each time he comes onscreen he holds a new piece of food (the user touches the food and the waiter walks off to return again with a new piece of food however I cant seem to delete the old peice of food from the screen as it says the child is already added... any help would be great -(id) init { ///other code then... waiterOnSCreen = [CCSprite spriteWithSpriteFrameName:@"CatUP.png"]; waiterOnSCreen.position = ccp(CatOffSCreenPosX, catXpos); [self addChild:waiterOnSCreen z:0]; //moving the waiter // the random food sprite is added later to the waiter // [waiterOnSCreen addChild:myRandomSprite]; } -(void)LoadRandomFood { ///I make my array here then... int i = arc4random() % [RandomFood count]; myRandomSprite = (CCSprite *)[RandomFood objectAtIndex:i]; //waiterOnSCreen is a CCSprite added on the init [waiterOnSCreen addChild:myRandomSprite]; myRandomSprite.position=ccp(290,220); myRandomSprite.tag = RandomFoodTag; } } later in if(CGRectContainsPoint(waiterOnSCreen.boundingBox, location)) { //trying to remove the food here //Ive already tried to remove the sprite using [self removeChildByTag:RandomeObjectTag]; //and also CCSprite *wantedSprite = (CCSprite *)[self getChildByTag:RandomFoodTag]; [wantedSprite removeFromParentAndCleanup:YES]; } }

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  • CGRect var as property value?

    - by David.Chu.ca
    CGRect type is a structure type. If I want to define a property as this type, should I use assign or retain attribute for this type? @interface MyClass { CGRect rect; ... } @property (nonatomic, assign) rect; // or retain?

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  • Utility App with Navigation Controller and Table View on FlipSide.

    - by wdt
    Hi All. I am relatively new to the whole MVC way of looking at things. I have an application that is based on the "Utility" Application template. Everything in the MainView and FlipsideView is working great but now I need to add a TableView and Navigation Controller to the flipside. Without the navigation bar being on the MainView. So only once the user has tapped the info light button will the nav bar display on the flipside with a table view. I have been able to impliment the Table View on the side and populate it with data from an array. I am now struggling to link in a navigation controller so that the tableview can become interactive. When I place the nav bar code into the app delegate it appears on the MainView and not the flipside view. Where do I place the navigation bar code so that it will display on the flipsideview. I cannt seem to get the code in the right place. Also I am not sure I have the right code, do I put the UINavigationController code in the FlipSideViewController.m ? I am not grasping the concept of the naivgation controller fully I think . . . Here is the code to bring up the FlipView - (IBAction)showInfo { TableViewController *controller = [[TableViewController alloc] initWithNibName:@"TableViewController" bundle:nil]; controller.delegate = self; controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:controller animated:YES]; [controller release]; } Now I need to get the TableViewController to have a navigation controller and a table view Thanks in advance.

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  • Updating UILabel and UIButton immediately

    - by paul simmons
    Hi, In a project, I change a UILabel's text with setText, a UIButton's color and after that do a time consuming calculation, followed by an animation. However, the text's and color's change is reflected after the calculation is executed (and before the animation begins) however I want to reflect the changes immediately before calculation (as you guess it is a waiting text) How can I achieve this?

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  • NSInvalidArgumentException – App terminates while i'm trying to copy a captured video to documents f

    - by ChrNis
    I'd like to try the wisdom of the crowds..because i'm frustrated right now. Thanks in advance. So here is my code: - (void)imagePickerController:(UIImagePickerController *)ipc didFinishPickingMediaWithInfo:(NSDictionary *)info{ NSLog(@"info: %@",info); NSString *newFilename = [NSString stringWithFormat:@"%@/%@.mov", [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"], [NSString stringWithFormat:@"%d", (long)[[NSDate date] timeIntervalSince1970]]]; NSLog(@"newFilename: %@",newFilename); NSFileManager *filemgr = [NSFileManager defaultManager]; NSError *err; if ([filemgr copyItemAtPath:[info objectForKey:@"UIImagePickerControllerMediaURL"] toPath:newFilename error:&err] == YES) NSLog (@"Move successful"); else NSLog (@"Move failed"); and this is the log: 2010-05-16 18:19:01.975 erlkoenig[7099:307] info: { UIImagePickerControllerMediaType = "public.movie"; UIImagePickerControllerMediaURL = "file://localhost/private/var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/tmp/-Tmp-/capture-T0x108cb0.tmp.8M81HU/capturedvideo.MOV"; } newFilename: /var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/Documents/1274026741.mov [NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90

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  • subversioning ipad app project

    - by MistakesRInevitable
    Hi All, I am currently looking at setting up an Ipad app project into subversion. Ive had a lot of experience with windows based development and .net. With this we have just created a repository in a network folder (by just right clicking - TortiseSVN - create repository) , than all we have done is our developers have checked out from this directory. How do we go about doing this in xcode. I know subversion is integrated with xcode and I am pretty confident of doing everything (from tutorials) except for the creation of the repository. Just wondering how we go about creating a repository in a folder based up on network folder? Thanks in advance

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  • gdb: getting into a dictionary

    - by mlecho
    hi, i saw this post today: http://stackoverflow.com/questions/112796/how-to-view-contents-of-nsdictionary-variable-in-xcode-debugger. i need to see the contents of a dictonary but i only know the "key"...is there a way i can spit out the details like a print_r in php? po gives me the object, but i would like to go deeper po 0x2027c0 NSCFDictionary

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  • Why I cant be able to change the UITableViewCell detailTextLabel's frame (just the label's position)?

    - by Simon
    Hi.. I am having a table view with default UITableViewCell of style UITableViewCellStyleValue2. I just want to move detailTextLabel few pixels to the right. I know it makes no sense to adjust its width and height :). I am trying to set detailTextLabel's frame with my x and y value. But its not affecting the its frame. I prefer to use default UITableViewCell, in this case, over a customized cell because the default UITableViewCell automatically manages the text alignment and centering of the labels.. How to change UITableViewCell detailTextLabel's frame? Am I allowed to change its frame? Thanks everyone..

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  • How to find an audio file's length (in seconds)

    - by mIL3S
    Hi all! (Objective C) Just using simple AudioServicesPlaySystemSoundID and its counterparts, but I can't find in the documentation if there is already a way to find the length of an audio file. I know there is AudioServicesGetPropertyInfo, but that seems to return a byte-buffer - do audio files embed their length in themselves and I can just extract it with this? Or is there perhaps a formula based on bit-rate * fileSize to convert to length-of-time? mIL3S www.milkdrinkingcow.com

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  • managing IB objects without iboutlets

    - by palominoz
    i have got 24 buttons in my project.I need to manage them but I don't want to get my MainViewController polluted by 24 declarations of pointers, properties & synthesizes. i was thinking about using buttonPushed functions and do it like: -(IBAction)buttonPushed:(id)sender{ UIbutton *button=sender; [buttons addObjectAtIndex:[sender tag]]; } my question is:is sender a pointer to the IBObject?

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  • iPad: How can I implement a scrolling timeline using a static image?

    - by BeachRunnerJoe
    I'm diving into iOS development and I'm building a simple timeline app using a static timeline image that I already have. The timeline image won't fit on the screen. The width of the image is about five times the width of the iPad screen, so I have to allow the user to scroll the image horizontally. Here's a mockup... For each item on the timeline, the user can tap it to receive a description at the bottom of the screen. My questions are... I was planning to use a UIScrollView with a PageControl at the bottom. Can a UIScrollView hold a single view that holds the entire timeline image or do I have to break the the timeline image up into multiple views? Are there any performance issues I need to consider when implementing this with a UIScrolLView, using a static image? Are there other approaches to implementing this scrollable timeline that I should consider other than using a UIScrollView? Thanks so much in advance for your wisdom!

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  • How to calculate end-point at a given center plus an radius and angle?

    - by mystify
    I'm trying to do some basic quartz core drawing with arcs, but have an F in math ;-) I have a point: CGPoint center = CGPointMake(100.0f, 100.0f); CGFloat radius = 50.0f; CGFloat startAngle = 20.0f / 180.0f * M_PI; CGFloat endAngle = 150.0f / 180.0f * M_PI; CGContextAddArc(c, center.x, center.y, radius, startAngle, endAngle, 0); Now I want to draw a little dot on the middle of the arc. I mean, not the center point, but the little curve (arc) which is made up between the angles 20-150 degrees. I looked into quartz but unfortunately, there seems no helper function to calculate this. Probably some hardcore trigonometric logic with atan and stuff of this kind needed?

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  • rotating UITableViewController manually

    - by lope
    Hi there, I am trying to do something I am not really sure is possible :) I have application that is in portrait mode and doesn't react to device rotation. Almost all parts of app work best in portrait so I disabled autorotation. But one part should be viewed in landscape. I just drawed my view rotated by 90 degrees and with this forced user to rotate device (again no autorotation). Everything was ok until I added UITableViewController that is invoked from this (and only from this) rotated view. Table view is of course in portrait mode, so user has to rotate device again, which is not really user friendly experience. My problem is, how to manually rotate table view so it is in landscape mode without using autorotation feature. I was able to rotate it using transform, but I can't position it properly. Is this right way of doing this or did I missed something that would make this trivial task? I don't want to use autorotation because both part are pretty separated from each other and each of them would be almost useless in other's mode

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  • Set the thumbImage and watch the slider-bar disappear?

    - by Roberta
    [sld1 setThumbImage:[UIImage imageNamed:@"Blue.png"] forState:UIControlStateHighlighted]; [sld1 setThumbImage:[UIImage imageNamed:@"Blue.png"] forState:UIControlStateNormal ]; Would that cause the slider-bar image to disappear? Mine are all gone. (The thumb-image displays just fine.) Apple's docs make it sounds like I can use any ONE of above 2 lines of code. (But I guess I really need both.) And I can't find anything about "you must always do all 4": Set the normal-state image. Set the highlighted-state image. Set the setMinimumTrackImage. Set the setMaximumTrackImage.

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  • Core Data: Detecting the type and casting it

    - by Tim Sullivan
    I have set up a Core Data model that includes an entity, Item with a 1-M relationship with the abstract entity Place, so that an item has many places. There are several entities with the parent set to Place. I want to set up several UI elements depending on the descendent place types. I have a loop that looks something like this: for (Place *place in item.places) { } ... but I'm not sure how to detect what type the place is, and how to cast it to the proper type so that I can access its properties. Thanks for any help!

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  • how can i read the integer value from xml document in objective-c

    - by uttam
    this is my xml document, i want to use the value of id and mlsid in in my viewcontroller. how can i read it. <Table> <ID>1</ID> <MLSID>70980420</MLSID> <STREET_NO>776</STREET_NO> <STREET_NAME>Boylston</STREET_NAME> <AreaName>Back Bay</AreaName <Table> i have created one object file book which store the all value of xml data and then i put that objects in the array . now i am able to retrive the string value but not getting the integer value. this is my object class. @interface Book : NSObject { NSInteger ID; NSInteger MLSID //Same name as the Entity Name. } how to trieve the value of MLSID in the viewcontroller. or how to print it.

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  • Using .align in inline assemby

    - by tech74
    Hi, I'm using ".align 16 \n\t" in some inline ARM assembly that is implementing some loops to align it on a 16 byte boundary however gcc asm compiler is complaining that alignement is too large i want to implement -falign-loops=16 in asm for a particular loop Thanks

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  • Best way to save to nsuserdefaults for custom class?

    - by cannyboy
    If I have a custom class Person which has three variables (which are propertized and synthesized): NSString* theName; float* theHeight; int theAge; Person instances are stored in an NSArray 'Group'. There is only one Group. What is the best way of string and loading the Group in NSUserDefaults? (bearing in mind that float and int are not legal for NSUserDefaults)

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  • How to calculate the y-pixels of someones weight on a graph? (math+programming question)

    - by RexOnRoids
    I'm not that smart like some of you geniuses. I need some help from a math whiz. My app draws a graph of the users weight over time. I need a surefire way to always get the right pixel position to draw the weight point at for a given weight. For example, say I want to plot the weight 80.0(kg) on the graph when the range of weights is 80.0 to 40.0kg. I want to be able to plug in the weight (given I know the highest and lowest weights in the range also) and get the pixel result 400(y) (for the top of the graph). The graph is 300 pixels high (starts at 100 and ends at 400). The highest weight 80kg would be plot at 400 while the lowest weight 40kg would be plot at 100. And the intermediate weights should be plotted appropriately. I tried this but it does not work: -(float)weightToPixel:(float)theWeight { float graphMaxY = 400; //The TOP of the graph float graphMinY = 100; //The BOTTOM of the graph float yOffset = 100; //Graph itself is offset 100 pixels in the Y direction float coordDiff = graphMaxY-graphMinY; //The size in pixels of the graph float weightDiff = self.highestWeight-self.lowestWeight; //The weight gap float pixelIncrement = coordDiff/weightDiff; float weightY = (theWeight*pixelIncrement)-(coordDiff-yOffset); //The return value return weightYpixel; }

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