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  • How decompose NSPredicate into components?

    - by Victor
    Is there any common way to decompose an expression created by [NSPredicate predicateWithFormat] to objects NSComprasionPredicate, NSExpression and other? For below example need to disassemble into components. [NSPredicate predicateWithFormat:@"(0 != SUBQUERY(collection, $x, $x.name == "Name").@Count)"];

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  • MKReverseGeocoder only showing one placemark

    - by Taylor Satula
    Hi, Something is wrong with my code. It is only showing the final placemark when I try to show the Street and City on one line. I don't know what I am doing wrong (a beginner problem most likely). I hope someone can help my out. - (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark { [self doLog:[placemark.thoroughfare, placemark.locality description]]; if ([geocoder retainCount]) [geocoder release]; }

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  • Why is my UIImageView blurred?

    - by Denis M
    I have a really weird problem with UIImageView. I have an image (an RGB png) 45x45 pixels which I add to the view. I can see that image is blurred after added to the view. Here is the same image in the simulator (left) and in Xcode (right): I have custom UIImageView class with this initWithImage code: - (id) initWithImage:(UIImage*) image { self = [super initWithImage:image]; self.frame = CGRectMake(0, 0, 45, 45); self.contentMode = UIViewContentModeScaleAspectFit; self.quantity = 1; if (self) { self.label = [[UITextField alloc]initWithFrame:CGRectMake(0,40,45,25)]; self.label.font = [UIFont systemFontOfSize:16]; self.label.borderStyle = UITextBorderStyleNone; self.label.enabled = TRUE; self.label.userInteractionEnabled = TRUE; self.label.delegate = self; self.label.keyboardType = UIKeyboardTypeNumbersAndPunctuation; self.label.textAlignment = UITextAlignmentCenter; } self.userInteractionEnabled = TRUE; // Prepare 3 buttons: count up, count down, and delete self.deleteButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; self.deleteButton.hidden = NO; self.deleteButton.userInteractionEnabled = YES; self.deleteButton.titleLabel.font = [UIFont systemFontOfSize:20]; self.deleteButton.titleLabel.textColor = [UIColor redColor]; [self.deleteButton setTitle:@"X" forState:UIControlStateNormal]; [self.deleteButton addTarget:self action:@selector(deleteIcon:) forControlEvents:UIControlEventTouchUpInside]; self.upCountButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; self.upCountButton.hidden = NO; self.upCountButton.userInteractionEnabled = YES; [self.upCountButton setTitle:@"+" forState:UIControlStateNormal]; [self.upCountButton addTarget:self action:@selector(addQuantity:) forControlEvents:UIControlEventTouchUpInside]; self.downCountButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; self.downCountButton.hidden = YES; self.downCountButton.userInteractionEnabled = YES; [self.downCountButton setTitle:@"-" forState:UIControlStateNormal]; [self.downCountButton addTarget:self action:@selector(removeQuantity:) forControlEvents:UIControlEventTouchUpInside]; return self; } I create it like this: UIImage *desertIcon = [UIImage imageNamed:@"desert.png"]; IconObj *desertIconView = [[IconObj alloc] initWithImage:desertIcon]; desertIconView.center = CGPointMake(265,VERTICAL_POINT_ICON); desertIconView.type = [IconObj TYPE_DESERT]; [self.view addSubview:desertIconView]; [desertIconView release]; Why would the displayed image be so than the one stored in a file?

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  • Getting Data For Webpages?

    - by fuzzygoat
    When looking to get data from a web page whats the recommended method if the page does not provide a structured data feed? Am I right in thinking that its just a case of doing an NSURLRequest and then hacking what you need out of the responseData(NSData*)? I am not too concerned about the implementation in Xcode, I am more curious about actually collecting the data, before I start coding a "hunt & peck" through a list of data. gary

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  • UITableView less than full screen from code?

    - by Gerry
    I have a number of views that use UITableView. (I use UIViewController and implement UITableViewDelegate and UITableViewDataSource interfaces.) I'm having trouble creating a tableview that leaves room at the top for a toolbar. How to I size and layout the Tableview so that it is less than full screen? Is this an AutoResizing mask problem? Thanks, Gerry

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  • UIView, UIScrollView and UITextFields problem calling Method

    - by Jeff Groby
    I have a view with several embedded UITextFields, this UIView is subordinated to a UIScrollView in IB. Each text field is supposed to invoke a method called updateText defined in the viewcontroller implementation file when the user is done editing the field. For some reason, the method updateText never gets invoked. Anyone have any ideas how to go about fixing this? The method fired off just fine when the UIScrollView was not present in the project but the keyboard would cover the text fields during input, which was annoying. Now my textfields move up above the keyboard when it appears, but won't fire off the method when done editing. Here is my implementation file: #import "MileMarkerViewController.h" @implementation MileMarkerViewController @synthesize scrollView,milemarkerLogDate,milemarkerDesc,milemarkerOdobeg,milemarkerOdoend,milemarkerBusiness,milemarkerPersonal,milemarker; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Initialization code } return self; } - (BOOL) textFieldShouldReturn: (UITextField*) theTextField { return [theTextField resignFirstResponder]; } - (void)viewDidLoad { [super viewDidLoad]; [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(keyboardWasShown:) name: UIKeyboardDidShowNotification object: nil]; [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(keyboardWasHidden:) name: UIKeyboardDidHideNotification object: nil]; keyboardShown = NO; // 1 [scrollView setContentSize: CGSizeMake( 320, 480)]; // 2 } - (void)keyboardWasShown:(NSNotification*)aNotification { if (keyboardShown) return; NSDictionary* info = [aNotification userInfo]; // Get the size of the keyboard. NSValue* aValue = [info objectForKey:UIKeyboardBoundsUserInfoKey]; CGSize keyboardSize = [aValue CGRectValue].size; // Resize the scroll view (which is the root view of the window) CGRect viewFrame = [scrollView frame]; viewFrame.size.height -= keyboardSize.height; scrollView.frame = viewFrame; // Scroll the active text field into view. CGRect textFieldRect = [activeField frame]; [scrollView scrollRectToVisible:textFieldRect animated:YES]; keyboardShown = YES; } - (void)keyboardWasHidden:(NSNotification*)aNotification { NSDictionary* info = [aNotification userInfo]; // Get the size of the keyboard. NSValue* aValue = [info objectForKey:UIKeyboardBoundsUserInfoKey]; CGSize keyboardSize = [aValue CGRectValue].size; // Reset the height of the scroll view to its original value CGRect viewFrame = [scrollView frame]; viewFrame.size.height += keyboardSize.height; [scrollView scrollRectToVisible:CGRectMake(0, 0, 1, 1) animated:YES]; scrollView.frame = viewFrame; keyboardShown = NO; } - (void)textFieldDidBeginEditing:(UITextField *)textField { activeField = textField; } - (void)textFieldDidEndEditing:(UITextField *)textField { activeField = nil; } - (IBAction)updateText:(id) sender { NSLog(@"You just entered: %@",self.milemarkerLogDate.text); self.milemarker.logdate = self.milemarkerLogDate.text; self.milemarker.desc = self.milemarkerDesc.text; self.milemarker.odobeg = self.milemarkerOdobeg.text; self.milemarker.odoend = self.milemarkerOdoend.text; self.milemarker.business = self.milemarkerBusiness.text; self.milemarker.personal = self.milemarkerPersonal.text; NSLog(@"Original textfield is set to: %@",self.milemarker.logdate); [self.milemarker updateText]; } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)dealloc { [super dealloc]; } @end

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  • Drawing line Continous.

    - by japs
    Hi All, How to draw line continuous in uiview? I have used below code and it works fine but after drawing line straght when i draw another line then first one gets clear if i do not clear that then they join each other. Please suggest some solution. (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); //for( Line *eachLine in lineArray ) // [eachLine drawInContext:context]; CGContextSetLineWidth(context, 2.0); CGContextSetStrokeColorWithColor(context, [UIColor redColor].CGColor); CGContextSetFillColorWithColor(context, [UIColor redColor].CGColor); if (firstTouch.x != 0.0 && firstTouch.y != 0.0) { CGRect dotRect = CGRectMake(firstTouch.x - 3, firstTouch.y - 3.0, 5.0, 5.0); CGContextAddEllipseInRect(context, dotRect); CGContextDrawPath(context, kCGPathFillStroke); **CGContextMoveToPoint(context, firstTouch.x, firstTouch.y); for (NSString *onePointString in points) { CGPoint nextPoint = CGPointFromString(onePointString); CGContextAddLineToPoint(context, nextPoint.x, nextPoint.y); }** CGContextStrokePath(context); } else { CGContextSetFillColorWithColor(context, self.backgroundColor.CGColor); CGContextAddRect(context, self.bounds); CGContextFillPath(context); } }

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  • UInavigationcontroller,UItableview and UIview

    - by sudhakarilla
    I have one issue with UInavigationcontroller In my firstview i have button.If i click that button it should open tableview. if i click that tableviewcell is select the nextview willbe open.In my nextview i have backbutton click return to the tableview.it is used to navigationbar 2view and 3view. it doesnot tabbarcontroller.. Please help in this issue.

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  • How save selected switch option

    - by Rkm
    System UIviewcontroller has button , Tap on button i need to fire Info Tableviewcontroller. Tableviewcontroller itself UISwitch. My question is I need to save last selected switch option ON/OFF in UISwitch how to set my control. @implementation Info // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } if (indexPath.section) { cell.textLabel.text = @"Sounds"; cell.selectionStyle = UITableViewCellSelectionStyleNone; UISwitch *switchView = [[UISwitch alloc] initWithFrame:CGRectZero]; cell.accessoryView = switchView; [switchView setOn:NO animated:NO]; [switchView addTarget:self action:@selector(switchChanged_Sounds:) forControlEvents:UIControlEventValueChanged]; [switchView release]; return cell ; } } - (void) switchChanged_Sounds:(id)sender { UISwitch* switchControl = sender; NSLog( @"The switchChanged_Sounds is %@", switchControl.on ? @"ON" : @"OFF" ); }

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  • Custom animation for pushing a UIViewController

    - by Heinrich
    Hi, I want to show a custom animation when pushing a view controller: I would like to achieve something like an "expand" animation, that means the new view expands from a given rectangle, lets say [100,100 220,380] during the animation to full screen. Any suggestions where to start, respectively any documents, tutorials, links? :) heinrich

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  • how to make a NEWS -Reader app

    - by exiang
    hey, I'm a beginner and I'm trying to make a NEWS reader app. My idea is to make an app just like N.Y Times. The question is : how do I access the news database and display on my native app ? If I make an RSS reader kinda thing, will I be able to display the contents of the news feed on my native app itself ? Please, I'v been reading and trying different tactics but not really getting anywhere close to what I want. A simple tip from you guys could really help me. thx

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  • How much should the AppDelegate do?

    - by Rudiger
    I'm designing quite a large App and on startup it will create sessions with a few different servers. As they are creating a session which is used across all parts of the app its something I thought would be best in App Delegate. But the problem is I need the session progress to be represented on the screen. I plan to have a UIToolBar at the bottom of the main menu which I don't want to cover with the progress bar but cover the UIView above it.So the way I see it I could do it a few different ways. 1) Have the App Delegate establish the sessions and report the progress to the main menu class so it can represent it in the progress bar (will I have any issues doing this if the sessions are created in a separate thread?), 2) have the App delegate display the main menu (UIView with a bunch of buttons and UIToolBar) and have it track and display the progress (I have never displayed anything in the App Delegate but assume you can do this but its not recommended) or 3) have the App Delegate just push the main menu and have the mainMenu class create the sessions and display the progress bar. 4) I think the other way to do it is to create the sessions in a delegate class and have the delegate set to mainMenu rather than self (AppDelegate), although I've never used anything other then self so not sure if this will work or if I will be able to close the thread (through calling super maybe?) as its running in the AppDelegate rather than the delegate of the class. As I've kinda said before the sessions are being created in a class in a separate thread so it wont lock the UI and I think the best way is the first but am I going to have issues having it running in a separate thread, reporting back to the app delegate and then sending that message to the mainMenu view? I hope that all makes sense, let me know if you need any further clarification. Any information is appreciated Cheers,

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  • Crawling within a pdf

    - by Saubhagya
    Hi, I'm developing a tool that searches the keyword entered by the user on a given site. My problem is, it searches the keyword only on html/web pages but not on the PDF/MS-Word files found on the site. Can anyone suggest me some api/tool or provide the code that can search text from the given online PDF/MS-Word/Text file?

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  • GKSession sendDataToAllPeers including sender?

    - by Typeoneerror
    I've got a number of devices connected over wifi using GameKit. I have a simple UIAlertView popping up when peers receive data. All but the sendee show this alert view when data is sent, so I'm wondering if that's a bug in my app or if that's expected behavior. If the device doing the sending is also a GKSessionModePeer, I would expect it to "fire" its receiveData: message as well since I'm sending to all peers. Should I call a method manually at the same on the sendee device? For example, if I wanted to send a "GameStart" packet to the 4 phones, the peers would call startGame: in the receiveData:fromPeer:inSession:context: method when it receives that packet and the sendee would be calling sendDataToAllPeers: and call startGame: on itself. Does that sound right or is there a way to include the sendee in the sendDataToAllPeers: list so that it responds exactly the same as all connected peers?

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  • How to change pop view controller animation on back button ?

    - by Aryabhatt
    Hi all , I am pushing my view controller with the following statement : [[self navigationController] pushViewController:self.customViewController animatedWithTransition:UIViewAnimationTransitionFlipFromLeft]; Now when I am pressing the back button I want to animate it with the uiviewanimationtransitionflipfromright . like [self.navigationController popViewControllerAnimatedWithTransition:UIViewAnimationTransitionFlipFromLeft]; How Can I do so ? Thanks

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  • Why aren't my objects sorting with sortedArrayUsingDescriptors?

    - by clozach
    I expected the code below to return the objects in imageSet as a sorted array. Instead, there's no difference in the ordering before and after. NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"imageID" ascending:YES]; NSSet *imageSet = collection.images; for (CBImage *image in imageSet) { NSLog(@"imageID in Set: %@",image.imageID); } NSArray *imageArray = [[imageSet allObjects] sortedArrayUsingDescriptors:(descriptor, nil)]; [descriptor release]; for (CBImage *image in imageArray) { NSLog(@"imageID in Array: %@",image.imageID); } Fwiw, CBImage is defined in my core data model. I don't know why sorting on managed objects would work any differently than on "regular" objects, but maybe it matters. As proof that @"imageID" should work as the key for the descriptor, here's what the two log loops above output for one of the sets I'm iterating through: 2010-05-05 00:49:52.876 Cover Browser[38678:207] imageID in Array: 360339 2010-05-05 00:49:52.876 Cover Browser[38678:207] imageID in Array: 360337 2010-05-05 00:49:52.877 Cover Browser[38678:207] imageID in Array: 360338 2010-05-05 00:49:52.878 Cover Browser[38678:207] imageID in Array: 360336 2010-05-05 00:49:52.879 Cover Browser[38678:207] imageID in Array: 360335 ... For extra credit, I'd love to get a general solution to troubleshooting NSSortDescriptor troubles (esp. if it also applies to troubleshooting NSPredicate). The functionality of these things seems totally opaque to me and consequently debugging takes forever.

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  • Capturing a NSParseErrorException

    - by Martin
    Could someone tell me how I can capture a NSParseErrorException? The Situation: my app downloads a small .plist file. I convert this into dictionary using the string method -propertylist. This normally works fine. I check for a connection before going to retrieve the file, so it works fine if I've got a connection to the internet, and works fine when I don't. However, I discovered a use case that crashes. If I'm at location that requires authetication before connecting to the internet (at Starbucks, say) what's being returned by the app isn't a plist and the attempt to parse it causes the application to crash. So is there a way to transform my code so that the NSParseErrorException is caught and rather than crashing the program I can just skip over this piece of code? NSDictionary *temp = [myDownloadString propertyList]; I tried doing this if ([myDownloadString propertyList]==NSParseErrorException){ //do something } but that didn't work.

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  • Problem searching a NSMutableArray

    Basically, I have a UISearchBar searching an NSMutableArray of stories that make up an RSS feed, and when you select a story, it loads in my app's UIWebView. It's difficult to explain, but I have a list of entries 1, 2, 3, and 4 and you search for '4'. 4 will be the first entry in the now-filtered list of data, right? You'd think that by selecting 4, it would load in the UIWebView. Well, the app seems to not recognize that you're selecting the first entry in a filtered list of data, and instead thinks that you're selecting the first entry in the unfiltered array of data, so it loads entry 1. Everything looks right in my code, but obviously it isn't. I know it's a confusing problem, but I hope I made it somewhat clear. Anyway, here's the relevant source so that you may see exactly what I mean: Search.h: http://www.scribd.com/doc/13107802/Searchh Search.m: http://www.scribd.com/doc/13107812/Searchm

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  • Custom UITableviewcell, CGGradient still shows when cell is selected?

    - by Burnsoft Ltd
    I'm using a custom tableview cell (like Tweetie's fast scrolling) i've added a gradient to the context, which looks really nice, but when I select the cell, the gradient is still visible. I'm not sure how to go about removing the gradient when the cell is selected? any ideas? cheers Nik - (void)drawContentView:(CGRect)r { CGContextRef context = UIGraphicsGetCurrentContext(); UIColor *backgroundColor = [UIColor whiteColor]; UIColor *textColor = [UIColor blackColor]; UIColor *dateColor = [UIColor colorWithRed:77.f/255.f green:103.f/255.f blue:155.f/255.f alpha:1]; if(self.selected) { backgroundColor = [UIColor clearColor]; textColor = [UIColor whiteColor]; } [backgroundColor set]; CGContextFillRect(context, r); //add gradient CGGradientRef myGradient; CGColorSpaceRef myColorspace; size_t num_locations = 2; CGFloat locations[2] = {0.0, 1.0}; CGFloat components[8] = {0.9f, 0.9f, 0.9f, 0.7f, // Bottom Colour: Red, Green, Blue, Alpha. 1.0f, 1.0f, 1.0f, 1.0}; // Top Colour: Red, Green, Blue, Alpha. myColorspace = CGColorSpaceCreateDeviceRGB(); myGradient = CGGradientCreateWithColorComponents (myColorspace, components, locations, num_locations); CGColorSpaceRelease(myColorspace); CGPoint startPoint, endPoint; startPoint.x = 0; startPoint.y = self.frame.size.height; endPoint.x = 0; endPoint.y = self.frame.size.height-15; // just keep the gradient static size, never mind how big the cell is CGContextDrawLinearGradient (context, myGradient, startPoint, endPoint, 0); CGGradientRelease(myGradient); //gradient end //rest of custom drawing goes here.... } Should I be doing something in the if cell selected code?

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  • How to stop the targets generated by schedule:@selector(target:) interval:timeInterval ?

    - by srikanth rongali
    I am using [self schedule:@selector(target:) interval:timeInterval]; for generating bullets in shooting game in cocos2d. In target: I called method targetGenerate to generate for bullet. The enemy generates these bullets. After the player won or enemy won the game the bullets should stop. But, I could not make them stop. I used flags for this. But they did either work. If I set flag1 = 1; for game won. I am using [self schedule:@selector(update:)]; for updating the bullet position to know it hits the player or not ? And I tried like this -(id)init { if( (self = [super init]) ) { //code for enemy [self schedule:@selector(target:) interval:timeInterval]; [self schedule:@selector(update:)]; }return self; } -(void)target:(ccTime)dt { if(flag != 1) [self targetGenerate]; } -(void)targetGenerate { //code for the bullet to generate; CCSprite *bullet = … } -(void)update:(ccTime)dt { //code for to know intersection of bullet and player } But it was not working. How can I make the bullets to disappear after player won the game or enemy won the game ? Thank you.

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  • Drag Rotate UIImageView by touch

    - by rockstardev
    I have an UIImageView that is a subview of an UIView. I'm trying to create a drag rotate effect with the UIImageView similar to spinning a bottle but I'm having trouble calculating the radians to rotate the image by. My code below seems like it should work because I've seen a similar calculation in Flash examples. Can anyone shed some light on what I'm doing wrong? Thanks. This is the code contained in my image view subclass: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; lastLocation = [touch locationInView:[self superview]]; } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:[self superview]]; CGFloat xDisplacement = location.x - lastLocation.x; CGFloat yDisplacement = location.y - lastLocation.y; CGFloat rad = atan2f(yDisplacement,xDisplacement); self.transform = CGAffineTransformMakeRotation(rad); }

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  • Line breaks in "NSString"s returned from PList don't work.

    - by Moshe
    I've seen this post: http://stackoverflow.com/questions/2035567/nsstring-newline-escape-in-plist but I'd like to know if there's a way to pragmatically render \n line breaks. I'm currently using: decisionText.text = [NSString stringWithFormat: (@"%@", [replies objectAtIndex:(arc4random() % [replies count])])]; Which randomly grabs a String from the replies array. The array was loaded from a plist like so: replies = [[NSMutableArray alloc] initWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"AdviceList" ofType:@"plist"]]; What am I missing? The answer can't be to manually enter line breaks. That's not programming! (Sounds like word processing to me.)

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  • popToRootViewControllerAnimated and dealloc all views

    - by mongeta
    Hello again, I have a UINavigationController that asks for some information and the user navigates until the end, once there, they can Accept or Cancel all the data that has been entered. It doesn't matter wich option they choose, as they always will go to the first view using [UINavigationController popToRootViewControllerAnimated:] The question is, how I can release/deallocate all the views ? For example, they start for view 1 and the end is at view 8, once they go directly to the 1 from the 8, how I can release view 2,3,4,5,6,7,8 ? thanks, regards, m.

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