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  • Showing value of UISlider inside App Prefs?

    - by Garrett H
    I have a settings bundle, working perfectly, that I would like to customize a bit. I have, among other things, a PSSliderSpecifier and a PSTitleValueSpecifier. What I would like to do is change the value of the PSTitleValueSpecifier to show the current value of the slider, preferably updating every time the slider's value changes (Actually, what I'd like even more would be displaying the slider's value on the same row as the slider). I know the settings bundle is rather strict about what you're allowed to do in it, but is there any way of doing this?

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  • NSURLConnection receives data even if no data was thrown back

    - by Anna Fortuna
    Let me explain my situation. Currently, I am experimenting long-polling using NSURLConnection. I found this and I decided to try it. What I do is send a request to the server with a timeout interval of 300 secs. (or 5 mins.) Here is a code snippet: NSURL *url = [NSURL URLWithString:urlString]; NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowedInMemoryOnly timeoutInterval:300]; NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&resp error:&err]; Now I want to test if the connection will "hold" the request if no data was thrown back from the server, so what I did was this: if (data != nil) [self performSelectorOnMainThread:@selector(dataReceived:) withObject:data waitUntilDone:YES]; And the function dataReceived: looks like this: - (void)dataReceived:(NSData *)data { NSLog(@"DATA RECEIVED!"); NSString *string = [NSString stringWithUTF8String:[data bytes]]; NSLog(@"THE DATA: %@", string); } Server-side, I created a function that will return a data once it fits the arguments and returns none if nothing fits. Here is a snippet of the PHP function: function retrieveMessages($vardata) { if (!empty($vardata)) { $result = check_data($vardata) //check_data is the function which returns 1 if $vardata //fits the arguments, and 0 if it fails to fit if ($result == 1) { $jsonArray = array('Data' => $vardata); echo json_encode($jsonArray); } } } As you can see, the function will only return data if the $result is equal to 1. However, even if the function returns nothing, NSURLConnection will still perform the function dataReceived: meaning the NSURLConnection still receives data, albeit an empty one. So can anyone help me here? How will I perform long-polling using NSURLConnection? Basically, I want to maintain the connection as long as no data is returned. So how will I do it? NOTE: I am new to PHP, so if my code is wrong, please point it out so I can correct it.

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  • iPhone: Crash When Deleting UITableView Rows

    - by Ajeet Kumar Yadav
    Hi, I am new in iPhone development. I am developing an application that fetches a value from a database and displays it in a table view. I want to delete table rows one by one but the rows do not delete and the application crashes. Here is my row deletion code: - (void)tableView:(UITableView *)tv commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if(editingStyle == UITableViewCellEditingStyleDelete) { SanjeevKapoorAppDelegate *appDelegate =(SanjeevKapoorAppDelegate *)[[UIApplication sharedApplication] delegate]; list *animal =[appDelegate.list1 objectAtIndex:indexPath.row]; [appDelegate deleteCoffee]; [self.tableView reloadData]; //Delete the object from the table. [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; } I also delete all rows with this action: -(IBAction)deletebtn:(id)sender{ SanjeevKapoorAppDelegate *appDelegate =(SanjeevKapoorAppDelegate *)[[UIApplication sharedApplication] delegate]; [appDelegate deleteCoffee]; [self.tableView reloadData]; } How do I properly implement delete in an UITableView?

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  • Show app running time in iPhone

    - by Sam
    I would like to write a counter that shows how many seconds an app has be running for. (textView) and the counter should be cumulative and starts from where it left off. Im new to iphone sdk.

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  • Getting Object allocation at UIBarButtons

    - by Rani
    Hi guys, I'm getting allocation at UIBarbutton that i added to toolbar. masterviewcontroller.h UIBarButtonItem *markReadItems; UIBarButtonItem *markUnReadItems; UIBarButtonItem *refreshItems masterviewcontroller.m -(id)init{ if(self = [super init]){ refreshItems = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(refreshItems)]; markReadItems = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(markAllAsRead)]; markUnReadItems = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemStop target:self action:@selector(markAllAsUnRead)]; } return self; } -(UIToolbar*)getToolbar { NSArray *items = [NSArray arrayWithObjects:refreshItems,markReadItems,markUnReadItems,nil]; [__toolBar setItems:items animated:NO]; } - (void)dealloc { [refreshItems release]; [markReadItems release]; [markUnReadItems release]; } Can any one help me to solve this. Thanks in advance.

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  • Hide buttons when making a screenshot UIGraphicsBeginImageContextWithOptions

    - by Jan
    is there a way to hide specific buttons (IBAction) when making a screenshot with UIGraphicsBeginImageContextWithOptions ? I'm using the code below: // Define the dimensions of the screenshot you want to take (the entire screen in this case) UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *sourceImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); //now we will position the image, X/Y away from top left corner to get the portion we want UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0); [sourceImage drawAtPoint:CGPointMake(0, -20)]; UIImage *croppedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageWriteToSavedPhotosAlbum(croppedImage,nil, nil, nil); Thank you for your answer!

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  • how do i scroll through 100 photos in UIScrollView in IPhone

    - by mwangima
    I'm trying to scroll through images being downloaded from a users online album (like in the facebook iphone app) since i can't load all images into memory, i'm loading 3 at a time (prev,current & next). then removing image(prev-1) & image (next +1) from the uiscroller subviews. my logic works fine in the simulator but fails in the device with this error: [CALayer retain]: message sent to deallocated instance what could be the problem below is my code sample - (void)scrollViewDidEndDecelerating:(UIScrollView *)_scrollView { pageControlIsChangingPage = NO; CGFloat pageWidth = _scrollView.frame.size.width; int page = floor((_scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1; if (page1 && page<=(pageControl.numberOfPages-3)) { [self removeThisView:(page-2)]; [self removeThisView:(page+2)]; } if(page0) { NSLog(@"<< PREVIOUS"); [self showPhoto:(page-1)]; } [self showPhoto:page]; if(page<(pageControl.numberOfPages-1)) { //NSLog(@"NEXT "); [self showPhoto:page+1]; NSLog(@"FINISHED LOADING NEXT "); } } -(void) showPhoto:(NSInteger)index { CGFloat cx = scrollView.frame.size.width*index; CGFloat cy = 40; CGRect rect=CGRectMake( 0, 0,320, 480); rect.origin.x = cx; rect.origin.y = cy; AsyncImageView* asyncImage = [[AsyncImageView alloc] initWithFrame:rect]; asyncImage.tag = 999; NSURL *url = [NSURL URLWithString:[pics objectAtIndex:index]]; [asyncImage loadImageFromURL:url place:CGRectMake(150, 190, 30, 30) member:memberid isSlide:@"Yes" picId:[picsIds objectAtIndex:index]]; [scrollView addSubview:asyncImage]; [asyncImage release]; } -(void) removeThisView:(NSInteger)index { if(index<[[scrollView subviews] count] && [[scrollView subviews] objectAtIndex:index]!=nil){ if ([[[scrollView subviews] objectAtIndex:index] isKindOfClass:[AsyncImageView class]] || [[[scrollView subviews] objectAtIndex:index] isKindOfClass:[UIImageView class]]) { [[[scrollView subviews] objectAtIndex:index] removeFromSuperview]; } } } For the record it works OK in the simulator, but not the iphone device itself. any ideas will be appreciated. cheers, fred.

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  • After I apply custom logic, next UI action crashes my app.

    - by DanF
    I've got an team (eveningRoster) that I'm making a button add employees to. The team is really a relationship to that night's event, but it's represented with an AC. I wanted to make sure an employee did not belong to the team before it adds, so I added a method to MyDocument to check first. It seems to work, the error logs complete, but after I've added a member, the next time I click anything, the program crashes. Any guesses why? Here's the code: -(IBAction)playsTonight:(id)sender { NSArray *selection = [fullRoster selectedObjects]; NSArray *existing = [eveningRoster arrangedObjects]; //Result will be within each loop. BOOL result; //noDuplicates will stay YES until a duplicate is found. BOOL noDuplicates = YES; //For the loop: int count; for (count = 0; count < [selection count]; count++){ result = [existing containsObject:[selection objectAtIndex:count]]; if (result == YES){ NSLog(@"Duplicate found!"); noDuplicates = NO; } } if (noDuplicates == YES){ [eveningRoster addObjects:[fullRoster selectedObjects]]; NSLog(@"selected objects added."); [eveningTable reloadData]; NSLog(@"Table reloaded."); } [selection release]; [existing release]; return; }

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  • Parser line break if string contains &#8211;

    - by pask
    Hi all, My NSXMLParser breaks on this string: <title>AAA &#8211; BCDEFGQWERTYUIO</title> I parsed it in this way, hope is the right way: - (void) parser: (NSXMLParser *) parser foundCharacters: (NSString *) string{ [...] if ([currentElement isEqualToString:@"title"]) { if (![string isEqualToString:@""]) { [title addObject:string]; NSLog(@"str: %@", string); } } it returns me: str: AAA str: - str: BCDEFGQWERTYUIO But i want to return a single string: str: AAA - BCDEFGQWERTYUIO because it's the correct title. Any idea? Thanks.

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  • How to get call notification using mobile substrate on iphone?

    - by prathumca
    Hi all, I want to use mobile substrate to "hook" some code into IPhone's "MobileCal" app so that the injected code will send a notification to my app MobileCal gets a call notification. But I'm out of luck and no clue which method need to be replaced by my "hooking" method in the "MobileCal" app. For example, the "MobileLog" and "iRealSMS" has the same functionality and they used mobile substrate to hook their code into "MobileCal" app. If any one has any clue, I would definitely appreciate them.

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  • How to prevent modal view controllers flashing when changing

    - by KP Overflow
    I have three view controllers, let's call them A, B and C. When a button is pressed on view A, view B is shown using presentModalViewController:animated: When the finish button is pressed on screen B, it dismisses itself. View A is notified whereupon it immediately shows view C, again using presentModalViewController:animated: The problem is that view A's content is momentarily flashed on the screen between view B closing and view C opening. I can get around this by making view A blank and moving it's current content to a new view, D. (For various reasons, I don't want view B to own view C, that's why it's not opening it) Am I over-complicating this? I'm sure there is a smarter way to go? ThanksT

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  • Creating iPhoto albums using Cocoa Scripting Bridge

    - by robinjam
    I'm tearing my hair out trying to create a new album from a Cocoa Application. In applescript it's a nice simple procedure: tell application "iPhoto" new album name "Album" end tell But I can't work out how this is done in Cocoa via the Scripting Bridge. I've tried this: iPhotoApplication *iPhoto = [SBApplication applicationWithBundleIdentifier:@"com.apple.iPhoto"]; iPhotoAlbum *newAlbum = [[[[iPhoto classForScriptingClass:@"album"] alloc] initWithProperties:[NSDictionary dictionaryWithObject:@"Album" forKey:@"name"]] autorelease]; [[iPhoto albums] addObject:newAlbum]; But that had no effect. Please help!

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  • Core Data confusion: fetch without tableview.

    - by Mr. McPepperNuts
    I have completed and reproduced Core Data tutorials using a tableview to display contents. However, I want to access an Entity through a fetch on a view without a tableview. I used the following fetch code, but the count returned is always 0. The data exists when the database is opened using SQLite tools. NSManagedObject *entryObj; XYZDelegate *appDelegate = [[UIApplication sharedApplication] delegate]; NSManagedObjectContext *managedObjectContext = appDelegate.managedObjectContext; NSFetchRequest *request = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Quote" inManagedObjectContext:managedObjectContext]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"id" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [request setSortDescriptors:sortDescriptors]; [request setEntity: entity]; NSArray *results = [managedObjectContext executeFetchRequest:request error:nil]; if (results == nil) { NSLog(@"No results found"); entryObj = nil; }else { NSLog(@"results %d", [results count]); } [request release]; [sortDescriptors release]; count returned is always 0; it should be 5. Can anyone point me to a reference or tutorial regarding creating a controller not to be used with a tableview.

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  • Problem with UITabBar + NavController in secondView viewDidLoad isn't called

    - by pbcoder
    My Application is a Tabbar with a navController in each of it's tabs. Now, the problem is to add a custom info button to the navController in the SecondView. I've created the App in InterfaceBuilder and entered the name of the nib to Load there. If I run my App now, the SecondView is shown, but the problem is, that the viewDidLoad is not called. http://www.freeimagehosting.net/image.php?9d8ed67dcc.png

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  • Pass through touches to portion of UIWebView

    - by cannyboy
    I have a UIWebView. Using something like this: http://blog.evandavey.com/2009/02/how-to-make-uiwebview-transparent.html .. I have made the UIWebView transparent. I now need to be able to pass though touches on the webview to the view below, but only on a rectangular portion of the web view. So, imagine the webview is a square, and it has a square area in the centre which must pass-thru touches to the view below. Is there a way to do this?

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  • Filter entire NSDictionaries out of NSArray based on multiple keys

    - by user270475
    Hi, I have an NSArray of NSDictionary objects which I would like to be able to return a new array of NSDictionaries from, where every NSDictionary has "Area == North" (for example). The closest example I have found so far is http://stackoverflow.com/questions/958622/using-nspredicate-to-filter-an-nsarray-based-on-nsdictionary-keys but this just returns the unique values for a given key, not the dictionary that has that key. Is there any way to perform a similar operation, and to return the entire dictionary?

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  • NSMutableDictionary is adding quotes to keys and values - why?

    - by TimD
    I'm trying to add some additional key/value pairs to an NSMutableDictionary, using: Tag *tag1 = [results1 objectAtIndex:0]; [resultsDict setObject:[tag1 retrieveTextUpToDepth:1] forKey:@"image_url"]; Tag *tag2 = [results2 objectAtIndex:0]; [resultsDict setValue:[tag2 retrieveTextUpToDepth:1] forKey:@"majority"]; This adds the k/v pairs with no problem, except when I come to retrieve them, some of the values have been wrapped with double quotes: po extendedDataDictionary: "image_url" = "/images/mpsL/11727.jpeg"; majority = 3460; Both keys and values are NSStrings, with no quotes - so I'm stumped as to where they're appearing from. Is there any way of preventing this? Or am I going to have to live with it and try to strip off the quotes once I've retrieved the value? Thanks...

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  • Populate tableView with more than one array

    - by Ewoods
    The short version: Is there a way to populate one specific row in a tableView with one value from one array, then populate another row in that same tableView with one value from a different array? For example, cell 1 would have the first value from Array A, cell 2 would have the first value from Array B, cell 3 would have the first value from Array C, etc. The long version: I hope this isn't too confusing. I've got an array of names, and then three more arrays with actions associated with those people. For example, the names array has Jim, Bob, and Sue, and then there's an array for eating, reading, and sleeping that records every time each person does one of these things (all of these arrays are populated from a MySQL database). The names array is used to populate a root tableView. Tapping on one of the names brings up a detail view controller that has another tableView that only has three rows. This part is all working fine. What I want to happen is when I tap on a name, it moves to the detail view and the three cells would then show the last event for that person for each of the three activities. Tapping on one of those three events then moves to a new view controller with a tableView that shows every event for that category. For example, if I tapped on Bob, the second page would show the last time Bob ate, read, and slept. Tapping on the first row would bring up a table that showed every time Bob has eaten. So far I've only been able to populate the second tableView with all of the rows from one of the arrays. I need it the other way around (one row from all of the arrays).

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  • iPad / iPhone Sync (WLAN or Inet)

    - by tobi
    I have actually one app with a SQLite DB and i port this at the moment to the ipad. My idea is a sync between iPad and iPhone for one table... But the Problem is "Person A" edit/change, create or delete a data record on iphone and "Person B" make the same or delete the edited record from Person A on the same time. Has anybody a idea for this? Or a nice lib for this?

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  • Why call autorelease for iVar definition in init method?

    - by iFloh
    Hi, I just familiarise myself with the CLLocationManager and found several sample class definitions that contain the following init method: - (id) init { self = [super init]; if (self != nil) { self.locationManager = [[[CLLocationManager alloc] init] autorelease]; self.locationManager.delegate = self; } return self; } - (void)dealloc { [self.locationManager release]; [super dealloc]; } I don't understand why the iVar would be autoreleased. Does this not mean it is deallocated at the end of the init method? I am also puzzled to see the same sample codes have the iVar release in the dealloc method. Any thoughts? '

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