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  • CLLocationManager class method not calling in iPodTouch

    - by Siddharth
    HI all, I was using a sample code which uses CLLocationManager class to determine the current location of user. when i run this app on iPad i am getting the correct location but when i run the same app on iPod Touch i am getting a blank label i.e nothing is displayed on the label .although wi-fi signal strength is good in both iPod and iPad.The code looks like... - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ int degrees = newLocation.coordinate.latitude; double decimal = fabs(newLocation.coordinate.latitude - degrees); int minutes = decimal * 60; double seconds = decimal * 3600 - minutes * 60; NSString *lat = [NSString stringWithFormat:@"%d° %d' %1.4f\"", degrees, minutes, seconds]; latLabel.text = lat; [latLocationArray addObject:lat]; degrees = newLocation.coordinate.longitude; decimal = fabs(newLocation.coordinate.longitude - degrees); minutes = decimal * 60; seconds = decimal * 3600 - minutes * 60; NSString *longt = [NSString stringWithFormat:@"%d° %d' %1.4f\"", degrees, minutes, seconds]; longLabel.text = longt; [longLocationArray addObject:longt]; }

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  • Function should return float, but it gets messed up!

    - by Andre
    Hi guys, I'm going crazy here. I have a function that should return a float number: - (float) getHue:(UIColor *)original { NSLog(@"getHue"); const CGFloat *componentColors = CGColorGetComponents(original.CGColor); float red = componentColors[0]; float green = componentColors[1]; float blue = componentColors[2]; float h = 0.0f; float maxChannel = fmax(red, fmax(green, blue)); float minChannel = fmin(red, fmin(green, blue)); if (maxChannel == minChannel) h = 0.0f; else if (maxChannel == red) h = 0.166667f * (green - blue) / (maxChannel - minChannel) + 0.000000f; else if (maxChannel == green) h = 0.166667f * (blue - red) / (maxChannel - minChannel) + 0.333333f; else if (maxChannel == blue) h = 0.166667f * (red - green) / (maxChannel - minChannel) + 0.666667f; else h = 0.0f; if (h < 0.0f) h += 1.0f; NSLog(@"getHue results: %f", h); return h; } The NSLog will trace it correctly (i.e: 0.005), but the actual return value of the function is NULL. I've tried getting that value in so many ways and it never works. float originalHue = [self getHue:original]; results in a building error, as it says: "incompatible types in initialization" float *originalHue = [self getHue:original]; results in a null return. I've tried other ways, but it never actually gets the value properly. Any thoughts? Cheers guys, Andre

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  • COCOS2D - Animation Stops During Move

    - by maiko
    Hey guys! I am trying to run a "Walk" style animation on my main game sprite. The animations work fine, and my sprite is hooked up to my joystick all fine and dandy. However, I think where I setup the call for my walk animations are wrong. Because everytime the sprite is moving, the animation stops. I know putting the animation in such a weak if statement is probably bad, but please tell me how I could get my sprite to animate properly while it is being moved by the joystick. The sprite faces the right direction, so I can tell the action's first frame is being called, however, it doesn't animate until I stop touching my joystick. Here is How I call the action: //WALK LEFT if (joypadCap.position.x <= 69 /*&& joypadCap.position.y < && joypadCap.position.y 40 */ ) { [tjSprite runAction:walkLeft]; }; //WALK RIGHT if ( joypadCap.position.x = 71 /* && joypadCap.position.y < 100 && joypadCap.position.y 40 */) { [tjSprite runAction:walkRight]; }; THIS: is the how the joystick controls the character: CGPoint newLocation = ccp(tjSprite.position.x - distance/8 * cosf(touchAngle), tjSprite.position.y - distance/8 * sinf(touchAngle)); tjSprite.position = newLocation; Please help. Any alternative ways to call the characters walk animation would be greatly appreciated!

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  • iPad orientation on launch problem in portrait (bottom home button)

    - by edie
    Hi.... I've an iPad app that supports all orientation... my problem was on the start up of the application. In case of landScapeRight and landScapeLeft and portrait(top home button) the views shows correctly but when the app start in portrait (bottom home button) the views show in landscape mode... I've implemented the - (void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation When I change the apps orientation the views shows correctly.

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  • How to get title of UITabBarItem in the More section?

    - by Sheehan Alam
    I have a UITabBarControllerDelegate method that determines the title of the UITabBarItem and does something accordingly. This works well for items in my UITabBar but when I click on the More button the rest of my UITabBarItems are in a UITableView. How can I determine the title in the More section? - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { if ([self.tabBarController.selectedViewController.title isEqualToString:@"All"]) { //do something } }

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  • read past bandswitch

    - by user262325
    Hello everyone I know there is no public api to read 3g/wifi bandswitch. But I wonder how this app can do this? http://itunes.apple.com/ca/app/download-meter-for-wi-fi-gprs/id327227530?mt=8 Thanks interdev

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  • How to save objects using Multi-Threading in Core Data?

    - by Konstantin
    I'm getting some data from the web service and saving it in the core data. This workflow looks like this: get xml feed go over every item in that feed, create a new ManagedObject for every feed item download some big binary data for every item and save it into ManagedObject call [managedObjectContext save:] Now, the problem is of course the performance - everything runs on the main thread. I'd like to re-factor as much as possible to another thread, but I'm not sure where I should start. Is it OK to put everything (1-4) to the separate thread?

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  • Ipad SplitViewController navigating to another view

    - by nishantcm
    Hi, I am trying to navigate to a different view in the detailview of the splitviewcontroller. I dont want the new view to display in the split view. I am using this code to change views. This works ok in portrait orientation, but in landscape the split view table view still appears. Can anyone help with this? Next *any = [[Next alloc] initWithNibName:@"Next" bundle:nil]; [self.view addSubview:any.view];

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  • @synthesize with UITabBarController?

    - by fuzzygoat
    I am curious if there is a good reason I should / should not be using @synthesize for the tabBarController below, or does it not matter? @implementation ScramAppDelegate @synthesize window; @synthesize tabBarController; -(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [self setTabBarController:[[UITabBarController alloc] init]]; [window addSubview:[tabBarController view]]; [window makeKeyAndVisible]; return YES; } -(void)dealloc { [tabBarController release]; [self setTabBarController: nil]; [window release]; [super dealloc]; } OR @implementation ScramAppDelegate @synthesize window; -(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { tabBarController = [[UITabBarController alloc] init]; [window addSubview:[tabBarController view]]; [window makeKeyAndVisible]; return YES; } -(void)dealloc { [tabBarController release]; [window release]; [super dealloc]; } cheers Gary

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  • Xcode 4 Tips and Tricks for Xcode 3 users

    - by Ben Clayton
    As most of you have probably seen, Xcode 4 has been released officially today. Now I know that plenty of devs out there have been using the preview versions, and it'd be great if people could post any great tips, tricks, or keyboard shortcuts they've learned using those version now they're no longer under NDA. This could be especially useful for those upgrading from Xcode 3 (like me, downloading right now). Note: Apple have released a 'transition guide' that has plenty of stuff in about getting from version 3 to version 4, but I bet there are loads of great tricks people out there have learned that aren't in there.

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  • Default update detailViewController, HELP.

    - by DrBeak1
    I've created an app that allows users to add information (from an addViewController), which is then displayed in a UITableView on the rootViewController. When the user taps the tableViewCell the detailViewController then displays, you guessed it, more details regarding the inputted user information. What I'm trying to accomplish is to setup an editViewController that will allow users to edit information they've already submitted. Currently, I'm trying to auto-populate the editViewController with the information that was previously submitted by the user (after which they can press save and update the info). However, I'm getting stuck trying to perform this auto-populating and I'm not sure this is even the best route to accomplish this. Here is the edit method that is called to load the editViewController from the detailViewController. -(IBAction)editDetails:(id)sender { editViewController *evc = [[editViewController alloc] initWithNibName:@"editViewController" bundle:nil]; rootViewController *rvc = [[rootViewController alloc] init]; UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:evc]; [[self navigationController] presentModalViewController:navigationController animated:YES]; ///For Style NSInteger styleCount = [[rvc scoreTypeArray] count]; NSInteger styleRows = [rvc.scoreTypeArray objectAtIndex:indexPath.row]; ///HERE I GET AN ERROR MESSAGE SAYING THAT indexPath IS NOT DEFINED ///For Date NSInteger count = [[rvc dateArray] count]; NSInteger rows = [[rvc indexPath] row]; ///AND HERE I GET A WARNING MESSAGE SAYING rootViewController MAY NOT RESPOND TO INDEX PATH, AND OF COURSE IT DOESN'T WORK [[evc dateField] setText:[NSString stringWithFormat:@"%@", [[evc dateArray] objectAtIndex:(count-1-rows)]]]; [[evc styleField] setText:[NSString stringWithFormat:@"%@", [[rvc scoresArray] objectAtIndex:(styleCount-1-styleRows)]]]; [navigationController release]; [evc release]; [rvc release];} So here I'm trying to load the information from a saved array that is declared in my rootViewController. Any thoughts any body? Please and thank you : )

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  • How to upload video to favorite/playlist using gdata in objective c

    - by Swati
    hi, i am trying to upload a video to favorite in my account but it shows Invalid request Uri and status code =400 i dont understand how should i format my request my code NSURL *url = [NSURL URLWithString: http://gdata.youtube.com/feeds/api/users/username/favorite]; ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url]; [request setPostValue:@"gdata.youtube.com" forKey:@"Host"]; [request setPostValue:@"application/atom+xml" forKey:@"Content-Type"]; [request setPostValue:@"CONTENT_LENGTH" forKey:@"Content-Length"]; [request setPostValue:@"" forKey:@"AuthSubToken"]; [request setPostValue:@"2" forKey:@"GData-Version"]; [request setPostValue:developer_key forKey:@"X-GData-Key"]; [request setPostValue:xml_data forKey:@"API_XML_Request"]; [request setDelegate:self]; [request setDidFailSelector:@selector(requestFailed:)]; [request setDidFinishSelector:@selector(gotTheResponse:)]; [[networkQueue go]; i have auth token and developer key, VIDEO_ID.but m not sure how to pass xml data in post request: <?xml version="1.0" encoding="UTF-8"?> <entry xmlns="http://www.w3.org/2005/Atom"> <id>VIDEO_ID</id> </entry> NSString *xml_data = contains xml data in string form

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  • UIAlertView choice causing resignFirstResponder to fail

    - by Chazbot
    Hi everyone. I'm having a similar issue to Anthony Chan's question, and after trying every suggested solution, I'm still stuck. Somehow, only after interacting with my UIAlertView, I'm unable to dismiss the keyboard in another view of my app. It's as though the Alert is breaking my UITextField's ability to resignFirstResponder. Below I instantiate my UIAlertView, which then calls its didDismissWIthButtonIndex method. Then, I call the showInfo method, which loads another UIViewController. UIAlertView *emailFailAlert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"error message text." delegate:self cancelButtonTitle:@"Not now" otherButtonTitles:@"Settings", nil]; [emailFailAlert setTag:2]; [emailFailAlert show]; [emailFailAlert release]; Once the 'Settings' option is pressed, I'm calling this method: - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex { if ([alertView tag] == 2) { if (buttonIndex == 1){ [self showInfo:nil]; } } } My showInfo method loads the other ViewController, via the code below: - (IBAction)showInfo:(id)sender { FlipsideViewController *fscontroller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideView" bundle:nil]; fscontroller.delegate = self; fscontroller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:fscontroller animated:YES]; [fscontroller release]; } Upon clicking any textField in this Flipside VC, I'm unable to dismiss the keyboard as I normally can with - (BOOL)textFieldShouldReturn:(UITextField *)textField, and [textField resignFirstResponder]. I've omitted this code bc this question is getting long, but I'm happy to post if necessary. The interesting part is that if I comment out the [self showInfo:nil] call made when the button is clicked and call it by clicking a test button (outside the alertView didDismissWithButtonIndex: method), everything works fine. Any idea what's happening here? Thanks in advance!

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  • UISplitViewController set in portrait mode

    - by dragon
    In ipad app I want to set UISplitViewController method set in portrait mode.(i.e Like Settings application in ipad) I have created a SplitViewbased application .When i run the application in portrait mode it doesn't show the splitview when i change the orientation into landscape it shows the splitview.In portrait mode also there is a toolbar button name "Root List" When i click the button it shows popover view to split view. I want to show splitview in portrait mode with two separte views each has navigation controller. Can anyone help me ? Thanks in advance......

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  • EXC_BAD_ACCESS when not using self.

    - by chris
    I got nabbed by the following bug again and would like some clarification to exactly why it is a bug. I have a simple UITableView that loads some data: // myclass.h @property (nonatomic, retain) NSArray *myData // myclass.m @synthesize myData; - (void) viewDidLoad { ... myData = someDataSource // note the lack of self } - (UITableViewCell *) cellForRowAtIndexPath ... { ... cell.textLabel.text = [self.myData objectAtIndex:indexPath.row]; // EXC_BAD_ACCESS } The table first loads fine, but when scrolling up enough that one of the cells is totally out of the view I then get the EXC_BAD_ACCESS error. Am I missing something in regards to @property retain. My understanding is that it releases anything that the pointer was previously pointing to before the reassignment. If I am correct then why would not using self. cause any problems? Thanks for the help.

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  • Releasing instance if service not enabled?

    - by fuzzygoat
    I would just like to check if I have this right, I am creating an instance of CCLocationManager and then checking if location services are enabled. If it is not enabled I then report an error, release the instance and carry on, does that look/sound right? locationManager = [[CLLocationManager alloc] init]; BOOL supportsService = [locationManager locationServicesEnabled]; if(supportsService) { [locationManager setDelegate:self]; [locationManager setDistanceFilter:kCLDistanceFilterNone]; [locationManager setDesiredAccuracy:kCLLocationAccuracyBest]; [locationManager startUpdatingLocation]; } else { NSLog(@"Location services not enabled."); [locationManager release]; } ... ... ... more code cheers gary

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  • Pinterest Gridview implementation on iOS

    - by Amal
    I want to implement a grid view like the one in Pinterest I thought about implementing as 3 table views. But I was not able to scroll them together well. When I implemented the scrollViewDidScroll and set the contentOffset for the table views other the scrollView , the scrolling became slow and unusable. Another implementation I did was of was having a set of images to load and calling the viewDraw function in scrollViewDidScroll. THe ViewDraw function just draws the necessary images and removes the rest of the images from the memory which were already drawn but wont be visible . this too makes the ScrollView Scrolling slow. And another issue with it is that there are white(background color) patches before the images are drawn. What should be the best way to implement this grid view ?

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  • How we can perform Action on Sequence UIButtons?

    - by Prince Shazad
    As My Screen shot show that i am working on word matching game.In this game i assign my words to different UIButtons in Specific sequence on different loctions(my red arrow shows this sequence)and of rest UIButtons i assign a one of random character(A-Z).when i Click on any UIButtons its title will be assign to UILabel which is in Fornt of Current Section:i campare this UILabel text to below UILabels text which is in fornt of timer.when it match to any of my UILabels its will be deleted.i implement all this process already. But my problem is that which is show by black lines.if the player find the first word which is "DOG". he click the Two UIButtons in Sequence,but not press the Third one in Sequence.(as show by black line).so here i want that when player press the any UIButtons which is not in Sequence then remove the previous text(which is "DO") of UILabel and now the Text of UILabel is only "G" . Here is my code to get the UIButtons titles and assign it UILabel. - (void)aMethod:(id)sender { UIButton *button = (UIButton *)sender; NSString *get = (NSString *)[[button titleLabel] text]; NSString *origText = mainlabel.text; mainlabel.text = [origText stringByAppendingString:get]; if ([mainlabel.text length ]== 3) { if([mainlabel.text isEqualToString: a]){ lbl.text=@"Right"; [btn1 removeFromSuperview]; score=score+10; lblscore.text=[NSString stringWithFormat:@"%d",score]; words=words-1; lblwords.text=[NSString stringWithFormat:@"%d",words]; mainlabel.text=@""; a=@"tbbb"; } else if([mainlabel.text isEqualToString: c]){ lbl.text=@"Right"; [btn2 removeFromSuperview]; score=score+10; lblscore.text=[NSString stringWithFormat:@"%d",score]; words=words-1; lblwords.text=[NSString stringWithFormat:@"%d",words]; mainlabel.text=@""; c=@"yyyy"; } else if([mainlabel.text isEqualToString: d]){ lbl.text=@"Right"; [btn3 removeFromSuperview]; score=score+10; lblscore.text=[NSString stringWithFormat:@"%d",score]; words=words-1; lblwords.text=[NSString stringWithFormat:@"%d",words]; mainlabel.text=@""; d=@"yyyy"; } else { lbl.text=@"Wrong"; mainlabel.text=@""; } }} Thanx in advance

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  • Modifying existing object attributes in Core Data after the fact

    - by glorifiedHacker
    In a previous question, I was looking for an alternative to modifying how "no date" was being stored in the date attribute of my NSManagedObject subclass. Previously, I had assigned nil to that attribute when a user didn't assign a date. In order to address sorting issues when using NSFetchedResultsController, I have decided to assign [NSDate distantFuture] to the date attribute when a user doesn't assign a date. However, given that this app is already in the wild, I need to update the Core Data store such that any existing nil date values are changed to [NSDate distantFuture]. What is the best way to make this change? The first thing that comes to mind is to iterate through all of the objects in the store in an array and change any nil values that are found. This could be limited to a one-time event by checking against a user defaults key that indicates whether this upgrade has been performed. Is there a way that I can do this with Core Data versioning instead? Or another method that doesn't involve me writing throw-away code?

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  • Why can't I store a float value - it's always zero!

    - by just_another_coder
    I have a view controller that is created by the app delegate - it's the first one shown in the app. In its interface I declare float lengthOfTime; I also set it as a property: @property (nonatomic) float lengthOfTime; And in it's implemetation: @synthesize lengthOfTime; In the class viewDidLoad method, I set the value: self.lengthOfTime = 3.0f; However, after this, the value is always zero. No errors, no compile warnings, nothing. Just zero. The class is instantiated, it is showing in the view, so I'm pretty sure it's not a nil reference. I've searched all over Google and can't figure it out. What's going on?!? :(

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  • Object in Array is not recognised as having "methods"

    - by kevin Mendoza
    I got my application working Awhile back, but after completely and accidentally deleting it, I have tried to create it from square one. unfortunately my rewritten program is a bit cranky; does anyone see or know the possible sources of error? Also, my if statements are acting up. -(void)loadAnnotations { CLLocationCoordinate2D workingCoordinate; iProspectLiteAppDelegate *appDelegate = (iProspectLiteAppDelegate *)[[UIApplication sharedApplication] delegate]; NSMutableArray *mines =[[NSMutableArray alloc] initWithArray:(NSMutableArray *) appDelegate.mines]; BOOL gold = [[NSUserDefaults standardUserDefaults] boolForKey:@"goldControl"]; BOOL silver = [[NSUserDefaults standardUserDefaults] boolForKey:@"silverControl"]; BOOL copper = [[NSUserDefaults standardUserDefaults] boolForKey:@"copperControl"]; for(id mine in mines) { NSLog(@"in the loop"); workingCoordinate.latitude = [[mine latitudeInitial] doubleValue]; workingCoordinate.longitude = [[mine longitudeInitial] doubleValue]; iProspectLiteAnnotation *tempMine = [[iProspectLiteAnnotation alloc] initWithCoordinate:workingCoordinate]; [tempMine setTite:[mine mineName]]; if ([[mine commodity] isEqualToString:@"Gold"] && [gold == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeGold]; [mapView addAnnotation:tempMine]; } if([[mine commodity] isEqualToString:@"Silver"] && [silver == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeSilver]; } if([[mine commodity] isEqualToString:@"Copper"] && [copper == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeCopper]; } } [mines dealloc]; } where the workingCoordinate.latitude = [[mine latitudeInitial] doubleValue], as well as the longitude, and [mine mineName],it says " No '-latitudeInitiallongitudeInitial' method found" or the mineName/LongitudeInitial. also, it complains about : before ] at all the if statement lines. I don't see any errors, do you?

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  • Where should I remove a notification observer?

    - by nevan
    I set up a notification observer in my view controll init method like so: [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveState) name:UIApplicationWillResignActiveNotification object:nil]; Where is the best place to call removeObserver:name:object: for this notification. I'm currently calling it in my dealloc method, but wanted to know if that might cause problems.

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  • How do I hide the text on a label in Obj-C?

    - by dbonneville
    I'm using label of a button to send a value into a function. However, I want the button to be invisible. I have the background color turned of in IB, and the text color is also set to nothing, but the text still shows up on the button. Is there another way to have a clear button that sends a value when it's clicked? If I could just turn off / hide the text on the stock UIButton that would be perfect... Thanks, Doug

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