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  • Remove newline character while XML parsing

    - by Prashant
    Hi, I am facing a problem while XML parsing. I have an NSMutablestring currentElementValue that has newlines into it. It has been received as an XMl from a web source. Even when i am trying to remove newline charactersets of substring the first 3 char there is no effect on the string. What can be done here? Regards PC Code is (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if(!currentElementValue) currentElementValue = [[NSMutableString alloc] initWithString:string]; else { [currentElementValue substringFromIndex:3]; [currentElementValue stringByTrimmingCharactersInSet:[NSCharacterSet newlineCharacterSet]]; NSLog(@"Processing Value : %@ with length %d", currentElementValue,[currentElementValue length] ); }

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  • UITableView headings shown on top of MBProgressHUD

    - by Chris Ballinger
    So I have a subclass of UITableViewController that loads some data from the internet and uses MBProgressHUD during the loading process. I use the standard MBProgressHUD initialization. HUD = [[MBProgressHUD alloc] initWithView:self.view]; [self.view addSubview:HUD]; HUD.delegate = self; HUD.labelText = @"Loading"; [HUD show:YES]; This is the result: . Is there any way to resolve this issue, or should I just abandon MBProgressHUD? Thanks!

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  • So where is this calling super?

    - by dontWatchMyProfile
    From the Core Data docs: Inheritance If you have two subclasses of NSManagedObject where the parent class implements a dynamic property and its subclass (the grandchild of NSManagedObject) overrides the methods for the property, those overrides cannot call super. @interface Parent : NSManagedObject @property(nonatomic, retain) NSString* parentString; @end @implementation Parent @dynamic parentString; @end @interface Child : Parent @end @implementation Child - (NSString *)parentString { // this throws a "selector not found" exception return parentString.foo; } @end very, very funny, because: I see nobody calling super. Or are they? Wait... parentString.foo results in ... a crash ??? it's a string. How can that thing have a .foo suffixed to it? Just another documentation bug?

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  • Is there a simple way to let a layer throw an smooth shadow?

    - by mystify
    I was drawing a path into a layer. Lets say I can't access that drawing code in any way, because it comes from a compiled lib. Now I want to let that layer throw a shadow which matches the shape of its irregular content shape. Is there an easy way to do it? Or must I draw like 20 of those layers and scale them up on every iteration, adjusting their alpha and letting the GPU do the extraordinarily heavy compositing?

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  • can't able to integrate base64decode in my class

    - by MaheshBabu
    Hi folks, i am getting the image that is in base64 encoded format. I need to decode it. i am writing the code for decoding is + (NSData *) base64DataFromString: (NSString *)string { unsigned long ixtext, lentext; unsigned char ch, input[4], output[3]; short i, ixinput; Boolean flignore, flendtext = false; const char *temporary; NSMutableData *result; if (!string) return [NSData data]; ixtext = 0; temporary = [string UTF8String]; lentext = [string length]; result = [NSMutableData dataWithCapacity: lentext]; ixinput = 0; while (true) { if (ixtext >= lentext) break; ch = temporary[ixtext++]; flignore = false; if ((ch >= 'A') && (ch <= 'Z')) ch = ch - 'A'; else if ((ch >= 'a') && (ch <= 'z')) ch = ch - 'a' + 26; else if ((ch >= '0') && (ch <= '9')) ch = ch - '0' + 52; else if (ch == '+') ch = 62; else if (ch == '=') flendtext = true; else if (ch == '/') ch = 63; else flignore = true; if (!flignore) { short ctcharsinput = 3; Boolean flbreak = false; if (flendtext) { if (ixinput == 0) break; if ((ixinput == 1) || (ixinput == 2)) { ctcharsinput = 1; else ctcharsinput = 2; ixinput = 3; flbreak = true; } input[ixinput++] = ch; if (ixinput == 4) ixinput = 0; output[0] = (input[0] << 2) | ((input[1] & 0x30) >> 4); output[1] = ((input[1] & 0x0F) << 4) | ((input[2] & 0x3C) >> 2); output[2] = ((input[2] & 0x03) << 6) | (input[3] & 0x3F); for (i = 0; i < ctcharsinput; i++) [result appendBytes: &output[i] length: 1]; } if (flbreak) break; } return result; } i am calling this in my method like this NSData *data = [base64DataFromString:theXML]; theXML is encoded data. but it shows error decodeBase64 undeclared. How can i use this method. can any one pls help me. Thank u in advance.

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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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  • How to perform DNS query on iOS

    - by yasirmturk
    i want to perform some DNS queries e.g. to get IP records against a specific domain name, i am looking for a preferred way or some useful snippet for this on iOS 3.2+ SDK. thanx in advance part from other snippets i found this code Boolean result; CFHostRef hostRef; NSArray *addresses; NSString *hostname = @"apple.com"; hostRef = CFHostCreateWithName(kCFAllocatorDefault, (CFStringRef)hostname); if (hostRef) { result = CFHostStartInfoResolution(hostRef, kCFHostAddresses, NULL); // pass an error instead of NULL here to find out why it failed if (result == TRUE) { addresses = (NSArray*)CFHostGetAddressing(hostRef, &result); } } if (result == TRUE) { [addresses enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { NSString *strDNS = [NSString stringWithUTF8String:inet_ntoa(*((struct in_addr *)obj))]; NSLog(@"Resolved %d->%@", idx, strDNS); }]; } else { NSLog(@"Not resolved"); } but this is producing same IP for every host Resolved 0-220.120.64.1 any help??

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  • Having Issues with a utility app...

    - by Alex
    How do I accept data on the backside of a utility app, and then how do I let users modify that data? I've tried all sorts of tutorials, but to no avail. If you need further information let me know. Thanks in advanced.

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  • Incompatible type in assignment

    - by coure06
    Getting error: Incompatible type in assignment at fValue = ..., see the code static float t = 0; float d = .5; static float fValue = 0; fValue = [self easeOutBounce:t andB:0 andC:30 andD:d]; here is the method -(float) easeOutBounce:(float)t andB:(float)b andC:(float)c andD:(float)d { if ((t/=d) < (1/2.75)) { return c*(7.5625*t*t) + b; } else if (t < (2/2.75)) { return c*(7.5625*(t-=(1.5/2.75))t + .75) + b; } else if (t < (2.5/2.75)) { return c(7.5625*(t-=(2.25/2.75))t + .9375) + b; } else { return c(7.5625*(t-=(2.625/2.75))*t + .984375) + b; } }

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  • Highlighting a custom UIButton

    - by Dan Ray
    The app I'm building has LOTS of custom UIButtons laying over top of fairly precisely laid out images. Buttonish, controllish images and labels and what have you, but with a clear custom-style UIButton sitting over top of it to handle the tap. My client yesterday says, "I want that to highlight when you tap it". Never mind that it immediately pushes on a new uinavigationcontroller view... it didn't blink, and so he's confused. Oy. Here's what I've done to address it. I don't like it, but it's what I've done: I subclassed UIButton (naming it FlashingUIButton). For some reason I couldn't just configure it with a background image on control mode highlighted. It never seemed to hit the state "highlighted". Don't know why that is. So instead I wrote: -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [self setBackgroundImage:[UIImage imageNamed:@"grey_screen"] forState:UIControlStateNormal]; [self performSelector:@selector(resetImage) withObject:nil afterDelay:0.2]; [super touchesBegan:touches withEvent:event]; } -(void)resetImage { [self setBackgroundImage:nil forState:UIControlStateNormal]; } This happily lays my grey_screen.png (a 30% opaque black box) over the button when it's tapped and replaces it with happy emptyness .2 of a second later. This is fine, but it means I have to go through all my many nibs and change all my buttons from UIButtons to FlashingUIButtons. Which isn't the end of the world, but I'd really hoped to address this as a UIButton category, and hit all birds with one stone. Any suggestions for a better approach than this one?

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  • Extending a view to the left side, animated

    - by Heinrich
    Hi, I have a view that I want to extend on the left side using an animation. All borders but the left one should remain the same, so the x position and the width of the view are changing. I use this code: [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:5.0]; self.frame = CGRectMake(self.frame.origin.x-100, self.frame.origin.y, self.frame.size.width+100, self.frame.size.height); [UIView commitAnimations]; If I run this code, the width of the view is set to the new value immediately and then the view is moved to the new x point, but why? How can I change this behaviour? Thanks for your ideas!

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  • Why would I want to have a non-standard attribute?

    - by dontWatchMyProfile
    The documentation on Core Data entities says: You might implement a custom class, for example, to provide custom accessor or validation methods, to use non-standard attributes, to specify dependent keys, to calculate derived values, or to implement any other custom logic. I stumbled over the non-standard attributes claim. It's just a guess: If my attribute is anything other than NSString, NSNumber or NSDate I will want to have a non-standard Attribute with special setter and getter methods? So, for example, if I wanted to store an image, this would be a non-standard Attribute with type NSData and a special method, say -(void)setImageWithFileURL:(NSURL*)url which then pulls the image data from the file, puts in in an NSData and assigns it to core data? Or did I get that wrong?

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  • NSInvocation making app crash

    - by neha
    Hi all, I'm using NSInvocation as follows: In my init, I'm writing this in my viewDidLoad: SEL mySelector; mySelector = @selector(initParsersetId:type:); NSMethodSignature * sig = nil; sig = [[self class] instanceMethodSignatureForSelector:mySelector]; myInvocation = nil; myInvocation = [NSInvocation invocationWithMethodSignature:sig]; [myInvocation setTarget:self]; [myInvocation setSelector:mySelector]; SEL mySelector; mySelector = @selector(initParsersetId:type:); NSMethodSignature * sig = nil; sig = [[self class] instanceMethodSignatureForSelector:mySelector]; myInvocation = nil; myInvocation = [NSInvocation invocationWithMethodSignature:sig]; [myInvocation setTarget:self]; [myInvocation setSelector:mySelector]; And I'm calling it like this: Idea *tempIdea = [[Idea alloc]init]; tempIdea = [genericArray objectAtIndex:indexPath.row]; idea.ideaId = tempIdea.ideaId; [tempIdea release]; NSNumber *_id_ = [NSNumber numberWithInt:idea.ideaId]; [myInvocation setArgument:_id_ atIndex:2]; //CRASHING AT THIS LINE My application is crashing at the indicated line. Can anybody please help me?

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  • resignFirstResponder when tapping UITableView?

    - by Canada Dev
    I have a UITableView with two custom cells and each of them has a subview with a UITextField inside it. I have tried adding a UIButton on top of the UITableView and have it resignFirstResponder but that just means you won't be able to tap anywhere else - not even on the UITextFields to enter text. How do I make it so if I tap outside those two UITextFields, I can call resignFirstResponder, so the user can get back to the other cells? Thanks

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  • [picker dismissModalViewControllerAnimated:YES]; not working

    - by shishir.bobby
    I am using - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { } for imagepicker and using [picker dismissModalViewControllerAnimated:YES]; in iPad to dismiss the picker. also i tried using - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker;{ [picker dismissModalViewControllerAnimated:YES]; } to dismiss the picker once it done the work. BUt its not dimissing it. when i tap anywhere in the screen, than only it gets dismiss. What i am doing wrong to dismiss the imagepicker? Many thnkas

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  • How to align a UITableView's text?

    - by Knodel
    In my app I have a UITableView and I want to change the text's alignment to center (not only from the sides like this cell.textAlignment = UITextAlignmentCenter; but from up and down, as well). Can you help me? thanks in advance!

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