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  • UITableView with Custom Cell only loads one row of data at a time

    - by Anton
    For my table, I've created a custom cell that has two labels. I also have two arrays with data, that I use to respectively assign each label in the cell. My problem, is that when the table is viewed, only the first row has data, and the rest of the data "sorta" loads when I start scrolling down. By "sorta", only the first row will load at a time. The only time I get to see all the data, is when I scroll to the bottom, then scroll up again. I've used the cellForRowAtIndexPath method to load the data into my cell. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CustomCellIdentifier = @"CustomCellIdentifier"; CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:CustomCellIdentifier]; if (cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomCell" owner:self options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[CustomCell class]]) cell = (CustomCell *)oneObject; } NSUInteger row = [indexPath row]; //I have two tables to fill up, hence the tag if statement if ([tableView tag] == 0) { cell.arriveTimeLabel.text = [homeBoundTimes objectAtIndex:row]; cell.departTimeLabel.text = [homeBoundTimes objectAtIndex:row]; } else if ([tableView tag] == 1) { cell.arriveTimeLabel.text = [workBoundTimes objectAtIndex:row]; cell.departTimeLabel.text = [workBoundTimes objectAtIndex:row]; } return cell; } Is it possible that its only getting called when the top cell is being called?

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  • Facebook writing on a wall problem - retrieves only null value.

    - by Viral
    hi all friends, I am making a game application in that I want to pass my score on wall of face book. I've completed all the things (the log in and message passing part) but when I passes the score via global variable, I am getting only null as a value and not the score that I want. Is there any way to pass data or string to Face book and write on a wall? My code is (void)viewDidLoad { static NSString* kApiKey = @"be60415be308e2b44c0ac1db83fe486b"; static NSString* kApiSecret = @"4f880c7e100321f808c41b1d3c813dfa"; _session = [[FBSession sessionForApplication:kApiKey secret:kApiSecret delegate:self] retain]; score = [NSString stringWithFormat:@"%@",appDelegate.myTextView]; [_session resume]; [super viewDidLoad]; } whre score is NSString and myTextView is NSString in other viewcontrollerfile, And appDelegate is global variable. Any help?? thanks in advance.

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  • UIScrollView: Is 806k Image too much too handle? (Crash, out of memory)?

    - by Jordan
    I'm loading a 2400x1845 png image into a scroll view. The program crashes out of memory, is there a better way to handle this? mapScrollView is an UIScrollView in IB, along with a couple of UIButtons. -(void)loadMapWithName:(NSString *)mapName { NSString* bundlePath = [[NSBundle mainBundle] bundlePath]; UIImage *image = [UIImage imageWithContentsOfFile:[NSString stringWithFormat:@"%@/path/%@", bundlePath, [maps objectForKey:mapName]]]; UIImageView *imageView = [[UIImageView alloc] initWithImage:image]; CGSize imgSize = image.size; mapScrollView.contentSize = imgSize; [mapScrollView addSubview:imageView]; [imageView release]; [self.view addSubview:mapScrollView]; }

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  • how to drag a 'div' element to the google maps ,that be changed to a 'marker'..use jquery

    - by zjm1126
    this is my code : <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no"> </head> <body onload="initialize()" onunload="GUnload()"> <style type="text/css"> </style> <div id="map_canvas" style="width: 500px; height: 300px;float:left;"></div> <div id=b style="width: 50px; height: 50px;background:red;float:left;margin-left:300px;"></div> <script src="jquery-1.4.2.js" type="text/javascript"></script> <script src="jquery-ui-1.8rc3.custom.min.js" type="text/javascript"></script> <script src="http://ditu.google.cn/maps?file=api&amp;v=2&amp;key=ABQIAAAA-7cuV3vqp7w6zUNiN_F4uBRi_j0U6kJrkFvY4-OX2XYmEAa76BSNz0ifabgugotzJgrxyodPDmheRA&sensor=false"type="text/javascript"></script> <script type="text/javascript"> //********** function initialize() { if (GBrowserIsCompatible()) { // function createMarker(point, number) { var marker = new GMarker(point); var message = ["?","?","?","??","??"]; marker.value = number; GEvent.addListener(marker, "click", function() { var myHtml = "<b>#" + number + "</b><br/>" + message[number -1]; map.openInfoWindowHtml(point, myHtml); }); return marker; } // var map = new GMap2(document.getElementById("map_canvas")); map.setCenter(new GLatLng(39.9493, 116.3975), 13); // Add 5 markers to the map at random locations var bounds = map.getBounds(); var southWest = bounds.getSouthWest(); var northEast = bounds.getNorthEast(); var lngSpan = northEast.lng() - southWest.lng(); var latSpan = northEast.lat() - southWest.lat(); for (var i = 0; i < 5; i++) { var point = new GLatLng(southWest.lat() + latSpan * Math.random(), southWest.lng() + lngSpan * Math.random()); map.addOverlay(createMarker(point, i + 1)); } } } //************* $("#b").draggable(); </script> </body> </html>

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  • Convert NSString to fetch synthesized information.

    - by Max
    //COPY THIS CODE IN A FRESH PROJECT!!! //THIS 2 LINES ARE JUST EXAMPLES, IN REAL THEY ARE NOT STATIC! NSString *messagelevel1 = @"45"; NSString *messagelevel = @"1"; NSString *HuidigLevel = messagelevel; NSDecimalNumber *huidigleveldec = [[NSDecimalNumber alloc] initWithString: HuidigLevel]; float HuidigLevelRek = [huidigleveldec floatValue]; //HERE IS THE PROBLEM NSString* LevelTotaal=[[NSString alloc] initWithFormat:@"messagelevel%.f",HuidigLevelRek]; NSString*result = LevelTotaal; NSLog(@"%@",result); // THIS RESULT SHOULD RETURN THE SAME VALUE AS THE LINE UNDER THIS LINE! NSLog(@"%@",messagelevel1); I want the *result string behaves like the *huidiglevel string and fetch some information, but because the LevelTotaal is a NSString, It doesn't fetch this information. I really got no idea where to google for this problem, searching the Developer docs didn't helped either . Maybe you guys can help me out? Actually the second NSLog returns the value and to first NSLog just returns messagelevel1. To tell you in short ;) I hope you guys get what I'm saying!

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  • Searching with a UISearchbar is slow and blocking the main thread.

    - by Robert
    I have a Table with over 3000 entries and searching is very slow. At the moment I am doing just like in the 'TableSearch' example code (but without scopes) - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString { [self filterContentForSearchText: searchString]; // Return YES to cause the search result table view to be reloaded. return YES; } And the filterContentForSearchText method is as follows: - (void) filterContentForSearchText:(NSString*)searchText { // Update the filtered array based on the search text // First clear the filtered array. [filteredListContent removeAllObjects]; // Search the main list whose name matches searchText // add items that match to the filtered array. if (fetchedResultsController.fetchedObjects) { for (id object in fetchedResultsController.fetchedObjects) { NSString* searchTarget = [tableTypeDelegate getStringForSearchFilteringFromObject:object]; if ([searchTarget rangeOfString:searchText options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch)].location != NSNotFound) { [filteredListContent addObject:object]; } } } } My question is twofold: How do can I make the searching process faster? How can I stop the search from blocking the main thread? i.e. stop it preventing the user from typing more characters. For the second part, I tried "performSelector:withObject:afterDelay:" and "cancelPreviousPerformRequests..." without much success. I suspect that I will need to use threading instead, but I do not have much experience with it.

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  • NSMutableArray & Multiple Views

    - by Antonio
    I am trying to write an application that has a NSMutableArray that needs to be accessed and modified in a different View. The MainViewController displays a table that gets the information from an NSMutableArray. The SecondaryViewController is used to addObjects into the array. How do I go about this without declaring it as a global variable?

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  • How Do I create a synchronous version of NSURLConnection

    - by quinn
    I am using NSURLConnection inside of an NSIncrementalStore to synchronize my NSManagedObject with rest based web service built in Rails. I am aware of +sendSynchronousRequest:returningResponse:error but my understanding is that will not allow me to access such things as the HTTP response status code which I will need to properly handle the response, my understanding is sendSynchronousRequest returns the data if it responds in the 200 range and fails if it doesn't and doesn't really give you much more than that. I'm assuming I will somehow have to block the current method call after the NSURLConnection is instantiated and unblock it after NSURLConnection's delegate sets some value that can be returned by the blocked method. I'm assuming this will involve some combination of NSLock and NSThread but I really don't know where to start with this, any help will be greatly appreciated, thank you.

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  • Where should I put code that is supposed to fire AFTER the view has loaded?

    - by Timbo
    I’m writing an objective-c program that does some calculations based on time and will eventually updates UILabels each second. To explain the concept here’s some simplified code, which I’ve placed into the viewDidLoad of the class that handles the view. (void)viewDidLoad { [super viewDidLoad]; // how do i make this stuff happen AFTER the view has loaded?? int a = 1; while (a < 10) { NSLog(@"doing something"); a = a + 1; sleep(1); } } My problem is that the code halts the loading of the view until the loop is all complete (in this case 10 seconds). Where should I put code that I want to fire AFTER the view has finished loading? newbie question I know =/

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  • converting NSTimer running not on main runloop to GCD

    - by Justin Galzic
    I have a task that runs periodically and it was originally designed to run on a separate run loop than the main runloop using NSThread and NSTimer. What's the best way to adapt this to take advantage of GCD? Current code: -(void)initiateSomeTask { [NSThread detachNewThreadSelector:@selector(startTimerTask) toTarget:self withObject:nil]; } -(void)startTimerTask { // We won't get back the main runloop since we're on a new thread NSRunLoop *myRunLoop = [NSRunLoop currentRunLoop]; NSPort *myPort = [NSMachPort port]; [myRunLoop addPort:myPort forMode:NSDefaultRunLoopMode]; NSTimer *myTimer = [NSTimer timerWithTimeInterval:10 /* seconds */ target:self selector:@selector(doMyTaskMethod) userInfo:nil repeats:YES]; [myRunLoop addTimer:myTimer forMode:NSRunLoopCommonModes]; [myRunLoop run]; } Is there anything I can do besides replace detachNewThreadSelector with dispatch_async?

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  • How to reduce UIImage size to a maximum as possible

    - by Tharindu Madushanka
    I am using following code to resize the image. Resize a UIImage Right Way And I use interpolation quality as kCGInterpolationLow. And then I use UIImageJPEGRepresentation(image,0.0) to get the NSData of that image. Still its a little bit high in size around 100kb. when I send it over the network. Can I reduce it further. If I am to reduce it more what could I do ? Thanks and Kind Regards,

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  • UIImage - should be loaded with [UIImage imageNamed:@""] or not ?

    - by sagar
    Hello ! every one. I am having number of images with in my application. ( images more than 50 - approximately & it can extend according to client's need ) Each image are very large round about - 1024 x 768 & 150 dpi Now, I have to add all this images in a scroll view & display it. Ok, My question is as follows. According to me there are two options of loading large images imageNamed:@"" load asynchronously when viewDidLoad Called. Which is more preferable ? imgModel.image=[UIImage imageNamed:[dMain valueForKey:@"imgVal"]]; or like this. NSURL *ur=[[NSURL alloc] initFileURLWithPath:[[NSBundle mainBundle] pathForResource:lblModelName.text ofType:@"png"] isDirectory:NO]; NSURLRequest *req=[NSURLRequest requestWithURL:ur cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:40]; [ur release]; NSURLConnection *con=[[NSURLConnection alloc] initWithRequest:req delegate:self]; if(con){ myWebData=[[NSMutableData data] retain]; } else { } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [myWebData setLength: 0]; } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [myWebData appendData:data]; } -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [connection release]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { NSLog(@"ImageView Ref From - %@",imgV); // my image view & set image imgV.image=[UIImage imageWithData:myWebData]; [connection release]; connection=nil; }

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  • Scale an image every time it collide with another

    - by jean mayot
    here is my code : -(void)collision{ if(CGRectIntersectsRect(imageView.frame,centre.frame)){ imageView.alpha=0; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0f]; centre.transform=CGAffineTransformMakeScale(1.3, 1.3); [UIView commitAnimations]; } } When imageView collide with centre centre become bigger. my problem is that when "imageView" collide with "centre" a second time the animation doesn't work. I want to make centre bigger and bigger and bigger every time imageView collide with center, but it become bigger just one time . Sorry for my english I'm french :/ How can I solve this please ?

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  • -(void)dealloc - How ? Objective - C

    - by sagar
    Please Note that - this is not similar than this question. OK. To understand my question, First of all please see both of these destructors. - (void)dealloc { [Marketdetails release]; Marketdetails=nil; [parsedarray release]; parsedarray=nil; [Marketid release]; Marketid=nil; [marketname release]; marketname=nil; [super dealloc]; } - (void)dealloc { [super dealloc]; [Marketdetails release]; Marketdetails=nil; [parsedarray release]; parsedarray=nil; [Marketid release]; Marketid=nil; [marketname release]; marketname=nil; } See, Both destructors have different code. In First Destructor first current class objects are released & then [super dealloc] is called. In second Desctructor first [super dealloc] is called. My question is as follows. Where should we write [super dealloc] ? first or last ? or it doesn't matter ?

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  • How to tile a UIWebView?

    - by franky
    I need to use tiles with a UIWebview to improve the rendering and scrolling of the content. I tried to find some info in Google but it seems that there are no examples or technical info about this subject. I am doing some test with CATiledLayer class without luck... Basically, I want to replicate the same that Mobile Safari does with the content of a website. You can see how Safari makes tiles when you see the squared background. Any help will be very welcome! Thanks in advance, Franky

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  • Proper way to resignFirstResponder when a UITableView is touched?

    - by Topher Fangio
    Hello all, I have a pretty simple UITableView who's cells contain UITextFields and I need to be able to call resignFirstResponder to hide the keyboard whenever a user touches the UITableView outside of one of the cells. I have read this question/answer but it seems like a very rudimentary way to achieve this. I have read about a way to do it by converting the UITableView to a UIControl so that you can connect the TouchDown event. Does anybody know the standard or preferred way to achieve this functionality?

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  • Animate a GIF using Core Animation layers?

    - by Cliff
    I'm trying to animate a GIF and I hit a roadblock. I have an example of what I'm trying to do that uses the individual frames of the GIF and setting the animationImages property of a UIView. However in my project, the thing I want to animate is drawn using Layers. I'm looking for a quick and easy way to animate the frames without introducing too much complexity. Is there any animationImages equivalent with Layers? Does anybody have any ideas?

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  • Break out of jQtouch?

    - by Kelso.b
    I'm trying to give my mobile users the choice to view the full website by loading a different page. Thing is, jQtouch thoughtfully transforms links into ajax calls, so the user doesn't leave the page at all. Is there some way to break out of jQt or exclude certain links from loading ajaxically?

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  • AdMob ad is showing in iOS simulator, but not on iDevice

    - by Ben Toscano
    As the heading states, I can get my AdMob Ad to show in the iOS 5.1 and 6.0 simulator just fine, however, when running my application on my iOS 5.1.1 or 6.0 devices, there is just a blank space where the ad should be served. The code in my .m file is as follows: bannerView_ = [[GADBannerView alloc] initWithFrame:CGRectMake(0.0, 411.0 - GAD_SIZE_320x50.height, GAD_SIZE_320x50.width, GAD_SIZE_320x50.height)]; bannerView_.adUnitID = @"**myID**"; bannerView_.rootViewController = self; [self.view addSubview:bannerView_]; [bannerView_ loadRequest:[GADRequest request]]; //GADRequest *r = [[GADRequest alloc] init]; //r.testing = YES; //[bannerView_ loadRequest:r]; Furthermore, if I initiate testing of ads (see commented-out section), the test ad shows on both the simulator AND my iDevices, which is baffling me! What am I missing? Thanks for your help.

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  • iPhoneOS Core Data migration: moving something from an entity into a file

    - by Tim Sullivan
    I have a scenario where I'm moving the contents of a blob stored in a core data entity into a file. I need a way to export that data during a migration, where I know the entity that's being converted and save the blob to a file, writing the location of that file into the converted entity's appropriate attribute. I can't seem to find a way to do this. The docs regarding the Three Stage Migration seem to indicate what can be done, but I'm not sure where to define things, or what exactly to define.

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  • How to fix the header and first row in a UITableView

    - by Arturo Guzman
    I´m new trying to make some apps using objective c, so I´ve an idea using uitableview but I don't imagine how can I get this. I´m trying to do something like you do in a spreadsheet where you have a fixed header and the first column too So when scroll the uitableview vertically the header will stay visible at top of the table and rows will change And finally when you scroll in horizontal direction the first cell of the row will stay visible and will change the header depending of how you scroll the uitableview I hope you could give me an idea how to get this, because I don't imagine how to do this, also I don´t have a lot of experience with this programming language. Thanks!

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  • iOS: is it allowed to paint outside the bounds

    - by Tbee
    If clipToBounds = YES then you can draw all you want, but you only can paint inside the bounds. If it is set to NO then painting outside the bounds is possible, but is it allowed? The reason that I'm asking is because iOS uses the concept where the environment takes care of making sure the correct parts of the screen are (re)painted (e.g. setNeedsDisplay). If I draw outside my bounds, will it goof up? I have tried it, and it seems to work, but?

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  • How can I release this NSXMLParser without crashing my app?

    - by prendio2
    Below is the @interface for an MREntitiesConverter object I use to strip all html tags from a string using an NSXMLParser. @interface MREntitiesConverter : NSObject { NSMutableString* resultString; NSString* xmlStr; NSData *data; NSXMLParser* xmlParser; } @property (nonatomic, retain) NSMutableString* resultString; - (NSString*)convertEntitiesInString:(NSString*)s; @end And this is the implementation: @implementation MREntitiesConverter @synthesize resultString; - (id)init { if([super init]) { self.resultString = [NSMutableString string]; } return self; } - (NSString*)convertEntitiesInString:(NSString*)s { xmlStr = [NSString stringWithFormat:@"<data>%@</data>", s]; data = [xmlStr dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES]; xmlParser = [[NSXMLParser alloc] initWithData:data]; [xmlParser setDelegate:self]; [xmlParser parse]; return [resultString autorelease]; } - (void)dealloc { [data release]; //I want to release xmlParser here but it crashes the app [super dealloc]; } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)s { [self.resultString appendString:s]; } @end If I release xmlParser in the dealloc method I am crashing my app but without releasing I am quite obviously leaking memory. I am new to Instruments and trying to get the hang of optimising this app. Any help you can offer on this particular issue will likely help me solve other memory issues in my app. Yours in frustrated anticipation: ) Oisin

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