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  • XCode: Block support disabled

    - by Nic Hubbard
    XCode is warning me that Blocks support is disabled, and to compile with -fblocks. I have added -fblocks to the Other Linker Flags section. But compiling again gives me the same error. I am using iOS4 GM. Any ideas on how to fix this?

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  • prevent UIWebView inputs from displaying UIKeyboard without disabling user interaction

    - by Slee
    I have a UIWebView that loads and external product configuration web service UI that is basically a bunch of dependent Drop Down lists. The problem is the Drop Downs are basically enhanced text input's so when the user taps them to display the options the UIKeyboard keeps popping up and own after they make their selection. it is less than a fluid process. Is there anyway to suppress the html inputs from triggering the UIKeyboard?

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  • Converting NSMutableData to NSString Problem

    - by Sheehan Alam
    initWithData does not convert my data object into a string properly. When I check the length of the data object, it has a value. NSMutableData* receivedData =[[NSMutableData data] retain]; NSString* json_string = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding]; Am I doing something wrong creating the string?

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  • NSMutableString leaks on append or replaceOccurrencesOfString

    - by John
    Hello Folks, I know similar questions have been asked time and time again but I ask that you please bear with me as I cannot seem to find an answer that helps. My application has leaks that are driving me out of my mind. Actually, they are not reported as leaks using Leaks, but my net bytes in ObjectAlloc goes up and up and up and never stops, eventually leading to a crash if it goes on long enough (not very long). The problem occurs with NSMutableStrings. I think there is either something fundamental I don't understand about them, or I am facing another problem that I am having difficulty tracking down but keeps hiding behind the NSMutableStrings. Specifically, I am noticing that whenever I append to or perform a replace on a NSMutableString, ObjectAlloc reports what appear to be mismatches in malloc/frees behind the scene when resizing the NSMutableString. I'm sorry to say this is the second time I'm facing this problem - the first time I messed around for hours and hours and finally the problem went away (magic!) but I don't really know why. When I look at the code below (and believe me, I've stared at it for hours) I cannot see the problem. I look at the code and think to myself that I should be fine because I'm releasing the only object for which I am responsible (aString) and that NSMutableString should be taking care of cleaning up after any resizing it does. In the second example, just so you know in case it helps, the string being passed in comes from an ASIHTTPRequest object (it's the responseString) and I don't do anything at all with it. It's being called simply like so ([self DoStuff2:[request responseString]]) and I don't free the request myself either (I'm using a ASINetworkQueue and I assume that the requests are destroyed for me (I tried and caused errors because the request was already being release somewhere else). Also, I know it shouldn't do anything, but I even tried wrapping the code in autorelease pools, which of course did nothing. I should mention that this code is being run inside of an NSOperation. I thought that perhaps I am experiencing problems because NSOperations should create an autorelease pool for themselves, but I've tried that to no avail. Not related to NSMutableString, but I find I also have similar problems using the NSString componentsSeparatedByString method. Sometimes the memory used by the array that gets the separated components is never released. Hmmm...strings in general seem to be somewhat problematic for me it seems. I would appreciate ANY help anyone can provide. If you require more info, I'll be glad to add it. I do promise you that I've struggled with this (and other problems) for weeks and every problem I encounter I research hard and long until I find a solution - this is not an idle request, but a true cry for help! I've written so much code and now I'm trying to seal some small leaks etc and I notice this problem. Honestly, I cannot believe how memory management in Objective C can stump me so at times...I've read Apple's memory mgmt docs many times and I thought I thoroughly understood it and I try to be diligent about releasing objects I own, but sometimes I find myself wondering if I truly understand...I would like to put this to bed once and make sure I understand all this fully - to have this sort of question/problem after writing thousands of lines of code is more than a little scary/embarrassing/annoying. So again, if anybody has any insight, I'd be grateful. Thanks for your time and efforts. -(void)DoStuff { NSString *aString [ [[NSString alloc] initWithFormat:@"text %@ more text", self.strVariable]; [self.someMutableStringVar replaceOccurrencesOfString:@"replace" withString:aString options:NSCaseInsensitiveSearch range:NSMakeRange(0, [self.someMutableStringVar length])]; [aString release]; } -(void)DoStuff2:(NSString *)aString { [self.someMutableStringVar appendString:aString]; }

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  • Custom background for UINavigationBar in landcape mode

    - by lostInTransit
    Hi I am adding a custom background for my UINavigationBar. It works fine as long as the phone is in portrait mode. As soon as I switch to landscape mode, half the bar appears blue (the default navbar color) and half of it has my image How can I stretch the image for landscape mode and make it small again for portrait mode? Thanks Solution Incase anyone is looking for an answer to how to add an image to navigation bar - here goes UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, 480.0, 44.0)]; [imgView setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"navbar_landscape" ofType:@"png"]]]; [navigationController.navigationBar addSubview:imgView]; [imgView release];

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  • Asynchronous NSURLConnection Throws EXC_BAD_ACCESS

    - by Sheehan Alam
    I'm not really sure why my code is throwing a EXC_BAD_ACCESS, I have followed the guidelines in Apple's documentation: -(void)getMessages:(NSString*)stream{ NSString* myURL = [NSString stringWithFormat:@"http://www.someurl.com"]; NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:myURL]]; NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; if (theConnection) { receivedData = [[NSMutableData data] retain]; } else { NSLog(@"Connection Failed!"); } } And my delegate methods #pragma mark NSURLConnection Delegate Methods - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { // This method is called when the server has determined that it // has enough information to create the NSURLResponse. // It can be called multiple times, for example in the case of a // redirect, so each time we reset the data. // receivedData is an instance variable declared elsewhere. [receivedData setLength:0]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { // Append the new data to receivedData. // receivedData is an instance variable declared elsewhere. [receivedData appendData:data]; } - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { // release the connection, and the data object [connection release]; // receivedData is declared as a method instance elsewhere [receivedData release]; // inform the user NSLog(@"Connection failed! Error - %@ %@", [error localizedDescription], [[error userInfo] objectForKey:NSErrorFailingURLStringKey]); } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { // do something with the data // receivedData is declared as a method instance elsewhere NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]); // release the connection, and the data object [connection release]; [receivedData release]; } I get an EXC_BAD_ACCESS on didReceiveData. Even if that method simply contains an NSLog, I get the error. Note: receivedData is an NSMutableData* in my header file

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  • Set the width and height for a TTLauncherItem

    - by Koning Baard
    I have this: _launcherView.pages = [NSArray arrayWithObjects: [NSArray arrayWithObjects: [[[TTLauncherItem alloc] initWithTitle:@"New Note" image:@"bundle://Icon.png" style:TTSTYL URL:@"http://www.google.com/" canDelete:NO] autorelease], [[[TTLauncherItem alloc] initWithTitle:@"To Do Items" image:@"bundle://Icon.png" URL:@"http://www.yahoo.com/" canDelete:NO] autorelease], nil], nil]; How can I set the width and height for the items? I want all items to be 64x64 pixels. Thanks

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  • NSString sizeWithFont: returning inconsistent results? known bug?

    - by Olof Hedman
    I'm trying to create a simple custom UIView wich contain a string drawn with a single font, but where the first character is slightly larger. I thought this would be easily implemented with two UILabel:s placed next to eachother. I use NSString sizeWithFont to measure my string to be able to lay it out correctly. But I noticed that the font baseline in the returned rectangle varies with +/- 1 pixel depending on the font size I set. Here is my code: NSString* ctxt = [text substringToIndex:1]; NSString* ttxt = [text substringFromIndex:1]; CGSize sz = [ctxt sizeWithFont: cfont ]; clbl = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, sz.width, sz.height)]; clbl.text = ctxt; clbl.font = cfont; clbl.backgroundColor = [UIColor clearColor]; [contentView addSubview:clbl]; CGSize sz2 = [ttxt sizeWithFont: tfont]; tlbl = [[UILabel alloc] initWithFrame:CGRectMake(sz.width, (sz.height - sz2.height), sz2.width, sz2.height)]; tlbl.text = ttxt; tlbl.font = tfont; tlbl.backgroundColor = [UIColor clearColor]; [contentView addSubview:tlbl]; If I use 12.0 and 14.0 as sizes, it works fine. But if I instead use 13.0 and 15.0, then the first character is 1 pixel too high. Is this a known problem? Any suggestions how to work around it? Creating a UIWebView with a CSS and HTML page seems way overkill for this. and more work to handle dynamic strings. Is that what I'm expected to do?

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  • Adding a header view to a UIWebView similar to Safari and Articles

    - by MrMage
    I'd like to add a header view to an UIWebView similar to the address/search bar in MobileSafari and the excellent Articles.app by Sophia Teutschler. More precisely, I'd like to create a "pull to fix orientation" view above a UIWebView, just like in Articles. Articles does use a UIWebView, so it seems to be possible. Is there a way to accomplish this without having to embed the UIWebView into a UIScrollView and updating its size all the time, as described in this article? Apparently, I do need the scrolling events to have the "pull to fix orientation" behave accordingly.

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  • GCC4.2 build warning : Default deployment version is greater than the max value for the iPhone simul

    - by user255403
    Hi I upgraded an iPhone project from the 2.2.1 SDK to 3.0 SDK recently... And when I build the project I am getting the following warning: GCC 4.2 default deployment target 10.6.2 for architecture 'i386' and variant 'normal' is greater than the maximum value 10.6 for the Simulator - iPhone OS 3.1.2 SDK I have the iPhone OS Deployment target set to iPhone OS 3.0 Any idea what could be causing this 'warning' to show up. Regards - SY

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  • CGPath and Quartz 2D

    - by iphonedevnoob
    I want to create a triangle using Quartz 2D functions. The 3 edges of the triangle should be in different colors. I am able to create the triangle but not able to set the color of each edge or subpath separately. Any suggestions or sample code are much appreciated.

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  • AVAudioPlayer crash after playing from an AVAudioRecorder

    - by munchine
    I've got a button the user tap to start recording and tap again to stop. When it stop I want the recorded voice 'echo' back so the user can hear what was recorded. This works fine the first time. If I hit the button for the third time, it starts a new recording and when I hit stop it crashes with EXC_BAD_ACCESS. - (IBAction) readToMeTapped { if(recording) { recording = NO; [readToMeButton setTitle:@"Stop Recording" forState: UIControlStateNormal ]; NSMutableDictionary *recordSetting = [[NSDictionary alloc] initWithObjectsAndKeys: [NSNumber numberWithFloat: 44100.0], AVSampleRateKey, [NSNumber numberWithInt: kAudioFormatAppleLossless], AVFormatIDKey, [NSNumber numberWithInt: 1], AVNumberOfChannelsKey, [NSNumber numberWithInt: AVAudioQualityMax], AVEncoderAudioQualityKey, nil]; // Create a new dated file NSDate *now = [NSDate dateWithTimeIntervalSinceNow:0]; NSString *caldate = [now description]; recordedTmpFile = [NSURL fileURLWithPath:[[NSString stringWithFormat:@"%@/%@.caf", DOCUMENTS_FOLDER, caldate] retain]]; error = nil; recorder = [[ AVAudioRecorder alloc] initWithURL:recordedTmpFile settings:recordSetting error:&error]; [recordSetting release]; if(!recorder){ NSLog(@"recorder: %@ %d %@", [error domain], [error code], [[error userInfo] description]); UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Warning" message: [error localizedDescription] delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; return; } NSLog(@"Using File called: %@",recordedTmpFile); //Setup the recorder to use this file and record to it. [recorder setDelegate:self]; [recorder prepareToRecord]; [recorder recordForDuration:(NSTimeInterval) 5]; //recording for a limited time } else { // it crashes the second time it gets here! recording = YES; NSLog(@"Recording YES Using File called: %@",recordedTmpFile); [readToMeButton setTitle:@"Start Recording" forState:UIControlStateNormal ]; [recorder stop]; //Stop the recorder. //playback recording AVAudioPlayer * newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:recordedTmpFile error:&error]; [recordedTmpFile release]; self.aPlayer = newPlayer; [newPlayer release]; [aPlayer setDelegate:self]; [aPlayer prepareToPlay]; [aPlayer play]; } } - (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)sender successfully:(BOOL)flag { NSLog (@"audioRecorderDidFinishRecording:successfully:"); [recorder release]; recorder = nil; } Checking the debugger, it flags the error here @synthesize aPlayer, recorder; This is the part I don't understand. I thought it may have something to do with releasing memory but I've been careful. Have I missed something?

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  • Reordering items in mobilesafari

    - by Marek
    After searching around i still have no clue about the best practice to reorder a set of items in mobile safari. I'm currently using, in the desktop version of my webapplication, jQuery sortable function applied to a set of table rows, with an ajax callback to update items positioning. What would be the best way of doing this in mobile safari through jquery or plain javascript? The table is longer then the screen, so also the normal scrolling should be present. Other approaches that are usable and do not make use of drag and dropping are also welcome. Thanks.

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  • How to handle "mutating method sent to immutable object" exception?

    - by Madan Mohan
    I am having a class called Customer. Customer *object; //in this object i have the following data varialbles. object.customerName object.customerAddress object.customerContactList I declared customerContactList as NSMutableArray and also allocated and initialized. Now I am adding or deleting from contactList. //Adding. [object.customerContactList addObject:editcontacts];// here editcontacts one of the object in contactList. //Deleting. [object.customerContactList removeObjectAtIndex:indexPath.row]; [theTableView deleteSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationFade]; I am getting exception even it is NSMutableArray. Please help me. Thank You, Madan Mohan

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  • UIScrollView works as expected but scrollRectToVisible: does nothing

    - by mahboudz
    HI. I have used UIScrollView before, and am using it now, and never had a problem. I'm now adding it to an old app, and while it works as expected (I can look at the contents, scroll around with my finger, all the bounds and sizes are setup right so there is no empty space in the content, etc.), I just can't get scrollToRectVisible to work. I have even simplified the call so that it merely moves to the 0,0 position: [scrollView scrollRectToVisible:CGRectMake(0, 0, 10, 10) animated:YES]; or move it to 0,200: [scrollView scrollRectToVisible:CGRectMake(0, 200, 10, 10) animated:YES]; I even made a quick app to test this and I can get scrollRectToVisible to work there as I expect. But in my old app, I can't seem to make it do anything. I can make the scrollView scroll with setContentOffset:, but that's not what I want. This scrollView and its contents are defined in the nib by IB and used with an IBOutlet. The only code I am using in my app to handle the scrollView is [scrollView setContentSize:CGSizeMake(scrollView.contentSize.width, imageView.frame.size.height)]; (I'm only interested in vertical scrolling not horizontal). Has anyone run into a problem like this? I have compared the scrollView attributes in both apps and they are identical. ADDENDUM: My scrollViews frame is: 0.000000 0.000000 480.000000 179.000000 My scrollViews contentSize is: 0.000000 324.000000 It still acts like the rect I want to scroll to is already visible and no scrolling is needed. Not sure if that is what is happening. This is just the darnest thing. Seems like such an easy thing to resolve... ADDENDUM #2: This is how I am making do without scrollRectToVisible: CGPoint point = myRect.origin; if (![clefScrollView pointInside:point withEvent:nil]) { point.x = 0; if (point.y > clefScrollView.contentSize.height - clefScrollView.bounds.size.height) point.y = clefScrollView.contentSize.height - clefScrollView.bounds.size.height; [clefScrollView setContentOffset:point animated: YES]; } Everything else about this scrollView works as expected, but scrollRectToVisible. WHY?!? Any wild guesses?

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  • AVAudioRecorder Won't Record On Device

    - by Dyldo42
    This is my method: -(void) playOrRecord:(UIButton *)sender { if (playBool == YES) { NSError *error = nil; NSString *filePath = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat: @"%d", [sender tag]] ofType:@"caf"]; NSURL *fileUrl = [NSURL fileURLWithPath:filePath]; AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileUrl error:&error]; [player setNumberOfLoops:0]; [player play]; } else if (playBool == NO) { if ([recorder isRecording]) { [recorder stop]; [nowRecording setImage:[UIImage imageNamed:@"NormalNormal.png"] forState:UIControlStateNormal]; [nowRecording setImage:[UIImage imageNamed:@"NormalSelected.png"] forState:UIControlStateSelected]; } if (nowRecording == sender) { nowRecording = nil; return; } nowRecording = sender; NSError *error = nil; NSString *filePath = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat: @"%d", [sender tag]] ofType:@"caf"]; NSURL *fileUrl = [NSURL fileURLWithPath:filePath]; [sender setImage:[UIImage imageNamed:@"RecordingNormal.png"] forState:UIControlStateNormal]; [sender setImage:[UIImage imageNamed:@"RecordingSelected.png"] forState:UIControlStateSelected]; recorder = [[AVAudioRecorder alloc] initWithURL:fileUrl settings:recordSettings error:&error]; [recorder record]; } } Most of it is self explanatory; playBool is a BOOL that is YES when it is in play mode. Everything works in the simulator however, when I run it on a device, [recorder record] returns NO. Does anyone have a clue as to why this is happening?

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  • Int or NSInteger as object for method argument. Objective-C

    - by sergiobuj
    Hi. I'm having some trouble passing a number as an argument for a method: -(void) meth2:(int)next_int; And to call that method i need this: int next_int = 1; [self performSelectorOnMainThread:@selector(meth2:) withObject:next_int waitUntilDone:NO]; //update next_int and call meth2 again at this point i get a "pointer from integer without a cast" error, and would happen the same with a NSInteger. A NSNumber is not useful because it's immutable and i need to change the value constantly. Any Idea how can i do this? Thanks.

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  • CALayer and Quartz Transparency

    - by Brian
    I have a CALayer subclass. I have overridden the drawInContext method. I want the majority of my layer to be transparent except a few areas. I'm using the layer as a menu and I want the icons and labels on the menu to be opaque. Is it possible to have a CALayer's sublayers be opaque if the super CALayer is transparent? Is it possible to draw opaque tems in the drawInContext method of a transparent CALayer? I have tried using CGContextSetAlpha, but I assume it doesn't work since the CALayer that I am drawing for is transparent. As always, any help would be great.

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