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  • My Thread Programs Crash

    - by zp26
    I have a problem with threads objectiveC. The line of code below contains the recv block the program waiting for a datum. My intention is to launch a thread parallel to the program so that this statement does not block any application. I put this code in my program but when active switch the program crashes. Enter the code. -(IBAction)Chat{ if(switchChat.on){ buttonInvio.enabled = TRUE; fieldInvio.enabled = TRUE; [NSThread detachNewThreadSelector:@selector(riceviDatiServer) toTarget:self withObject:nil]; } else { buttonInvio.enabled = FALSE; fieldInvio.enabled = FALSE; } -(void)riceviDatiServer{ NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init]; int ricevuti; NSString *datiRicevuti; ricevuti = recv(temp, &datiRicevuti, datiRicevuti.length, 0); labelRicezione.text = [[NSString alloc] initWithFormat:@"%s.... %d", datiRicevuti, ricevuti]; [pool release]; }

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  • Custom UISlider Image not responding?

    - by Silent
    Hello all i have a custom image to replace the UISLider defult button image, all works fine image shows, it does not clip off. The problem is when i use the slider to move up and down the image dissapears and some how doesnt show up anymore only sometimes. could someone have a fix?

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  • Xcode: How-to bind a key that triggers application to appear (background daemon)

    - by Shyam
    Hi, I am struggling to create a certain kind of application my Mac, using Xcode and Interface Builder (RubyCocoa). As I am a nuby (but understand some Ruby), I would like to know how I could let my interface appear only if a key is pushed (a toggle), while the program is running in the background. Similar behavior like when I'd press the F4-key to show Dashboard. Really neat would be if the program wouldn't be showing as running in the Dock, but as a funky icon in the top bar, like well "Growl". Thank you so much for your help, comments and feedback!

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  • if statement is giving me some trouble

    - by kevin Mendoza
    For some reason, this if statement is giving me an "Expected : before ] token. if ([ [mine commodity] isEqualToString:@"Gold"] && [gold == YES]) { [tempMine setAnnotationType:iProspectLiteAnnotationTypeGold]; [mapView addAnnotation:tempMine]; } is there some typo here that I'm not seeing?

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  • Migrating a simple application from Application Delegate to ViewController Class

    - by eco_bach
    Hi Frst of all wanted to send out a huge thanks for the great feedback and support. I have a simple application working, right now simply loads a sequence of images and alows the user to step thru the images by clicking a button. All of my logic is in my Application Delegate class, with the image loading, initialization of UIImage Views etc happening in my applicationDidFinishLaunching method. My next step is to migrate as much as possible all of the logic from this class to a ViewController, to take advantage of the extra functionality etc in viewcontrollers. All my images and imageViews are initialized like the following in my applicationDidFinishLaunching. img = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@image1.jpg" ofType:nil]]; imgView = [[UIImageView alloc] initWithImage:img]; How would I migrate this to a ViewController based application? Where would I put all of the logic currently in my applicationDidFinishLaunching method, or for loading of images, is it necessary to only load them here? Any feedback, tips, suggestions appreciated.

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  • label in my tabel celll

    - by ven in Iphone world
    hi this is lak.. thank you for your fast feedback but that not worked for me i am using labels in table.. UILabel *label1 = (UILabel *) [cell viewWithTag:1]; label1.backgroundColor = [UIColor clearColor]; label1.text=aStation.station_name; label1.textColor = [UIColor colorWithRed:0.76 green:0.21 blue:0.07 alpha:1.0]; [label1 setFont:[UIFont fontWithName:@"Trebuchet MS" size:15]]; for this type of label i want to limit number of characters. hope i will get an answer..

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  • Which pdf elements could cause crashes?

    - by Felixyz
    This is a very general question but it's based on a specific problem. I've created a pdf reader app for the iPad and it works fine except for certain pdf pages which always crash the app. We now found out that the very same pages cause Safari to crash as well, so as I had started to suspect the problem is somewhere in Apple's pdf rendering code. From what I have been able to see, the crashing pages cause the rendering libraries to start allocating memory like mad until the app is killed. I have nothing else to help me pinpoint what triggers this process. It doesn't necessarily happen with the largest documents, or the ones with the most shapes. In fact, we haven't found any parameter that helps us predict which pages will crash and which not. Now we just discovered that running the pages through a consumer program that lets you merge docs gets rid of the problem, but I haven't been able to detect which attribute or element it is that is the key. Changing documents by hand is also not an option for us in the long run. We need to run an automated process on our server. I'm hoping someone with deeper knowledge about the pdf file format would be able to point me in a reasonable direction to look for document features that could cause this kind of behavior. All I've found so far is something about JBIG2 images, and I don't think we have any of those.

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  • Saving data in custom class via AppDelegate

    - by redspike
    I can't seem to save data to a custom instance object in my AppDelegate. My custom class is very simple and is as follows: Person.h ... @interface Person : NSObject { int _age; } - (void) setAge: (int) age; - (int) age; @end Person.m #import "Person.h" @implementation Person - (void) setAge:(int) age { _age = age; } - (int) age { return _age; } @end I then create an instance of Person in the AppDelegate class: AppDelegate.h @class Person; @interface AccuTaxAppDelegate : NSObject <UIApplicationDelegate> { ... Person *person; } ... @property (nonatomic, retain) Person *person; @end AppDelegate.m ... #import "Person.h" @implementation AccuTaxAppDelegate ... @synthesize person; - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after app launch [window addSubview:[navigationController view]]; [window makeKeyAndVisible]; } - (void)applicationWillTerminate:(UIApplication *)application { // Save data if appropriate } #pragma mark - #pragma mark Memory management - (void)dealloc { [navigationController release]; [window release]; [person release]; [super dealloc]; } @end Finally, in my ViewController code I grab a handle on AppDelegate and then grab the person instance, but when I try to save the age it doesn't seem to work: MyViewController ... - (void)textFieldDidEndEditing:(UITextField *)textField { NSString *textAge = [textField text]; int age = [textAge intValue]; NSLog(@"Age from text field::%i", age); AppDelegate *appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate; Person *myPerson = (Person *)[appDelegate person]; NSLog(@"Age before setting: %i", [myPerson age]); [myPerson setAge:age]; NSLog(@"Age after setting: %i", [myPerson age]); [textAge release]; } ... The output of the above NSLogs are: [Session started at 2010-05-04 18:29:22 +0100.] 2010-05-04 18:29:28.260 AccuTax[16235:207] Age in text field:25 2010-05-04 18:29:28.262 AccuTax[16235:207] Age before setting: 0 2010-05-04 18:29:28.263 AccuTax[16235:207] Age after setting: 0 Any ideas why 'age' isn't being stored? I'm relatively new to Obj-C so please forgive me if I'm missing something very simple!

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  • set different images to uitableview cell

    - by Sudha
    I am making an app in which one of the view has a tableview. Tableview cell has two conditions. There are two images which are going to be set on uitableview cell according to the condition i.e. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ NSString *que =[[userqueries objectAtIndex:indexPath.row]objectForKey:@"question"]; NSString *ans =[[userqueries objectAtIndex:indexPath.row]objectForKey:@"answer"]; static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil){ cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; cell.imageView.image=nil; if ((que.length!=0)&&(ans.length!=0)) { UIImageView* imag = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 75)]; imag.image = [UIImage imageNamed:@"ques.png"]; [cell.contentView addSubview:imag]; questext = [[UITextView alloc]initWithFrame:CGRectMake(10, 0, 300, 35)]; questext.backgroundColor = [UIColor clearColor]; questext.delegate = self; questext.tag = 101; questext.textAlignment = UITextAlignmentLeft; questext.editable = NO; questext.scrollEnabled = YES; [cell addSubview:questext]; anstext = [[UITextView alloc]initWithFrame:CGRectMake(10, 37, 300, 35)]; anstext.backgroundColor = [UIColor clearColor]; anstext.delegate = self; anstext.tag = 102; anstext.scrollEnabled = YES; anstext.textAlignment = UITextAlignmentLeft; anstext.editable = NO; [cell addSubview:anstext]; } else { UIImageView* imag = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 40)]; imag.image = [UIImage imageNamed:@"answ.png"]; [cell.contentView addSubview:imag]; onlyques = [[UITextView alloc]initWithFrame:CGRectMake(10, 0, 300, 35)]; onlyques.backgroundColor= [UIColor clearColor]; [onlyques setScrollEnabled:YES]; onlyques.delegate = self; onlyques.tag = 103; onlyques.textAlignment = UITextAlignmentLeft; onlyques.editable = NO; onlyques.scrollEnabled = YES; [cell addSubview:onlyques]; } } questext = (UITextView*)[cell viewWithTag:101]; questext.text = que; anstext = (UITextView*)[cell viewWithTag:102]; anstext.text = ans; onlyques = (UITextView*)[cell viewWithTag:103]; onlyques.text = que; return cell; } But image is not appearing properly. As I scroll up and down the table view ,images get changes automatically. Please look upon my code and help me in finding the error. second image is when I scroll up and down the table view and first image is in the starting. please help me. if any one knows how to load different images to uitableview cell. thanks in advance.

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  • Write to XCode build transcript.

    - by eaigner
    Is there any way to write to the XCode build transcript? What i want to do, is throw a warning if a device is not attached to the computer instead of an assertion failure in my unit test cases (some cases rely on an attached ipod). I thought of something like the standard compiler warnings (only with custom message). Thanks.

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  • Chinese records of sqlite databse are in not accessable in iphone app

    - by Mas
    Hi! I'm creating an iphone app. In which I'm reading data from the sqlite db and presenting it in the tableview control. Problem is that the data is in chinese language. Due to unknown reason, when I read/fetch record from the sqlite table, some records are presented and other are missed by objc. Even objc reads some columns of the missing values, But returns the nil results of the some columns. In reality these columns are not empty. I tried many solutions but didn't find any suitable. Same database is working perfectly in the android version of the app. Any one can help here is the code of reading the chinese records from table Quote *q = [[Quote alloc] init]; q.catId = sqlite3_column_int(statement, 0); q.subCatId = sqlite3_column_int(statement, 1); q.quote = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 2)]; and here is the some records which iphone misses ??????·??? ??????,????????! ??????,??????? Thanks

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  • NSMutableSet addObject question

    - by Jacob Relkin
    I've got a class that wraps around an NSMutableSet object, and I have an instance method that adds objects (using the addObject: method) to the NSMutableSet. This works well, but I'm smelling a performance hitch because inside the method i'm explicitly calling containsObject: before adding the object to the set. Three part question: Do I need to be calling containsObject: before I add an object to the set? If so, then what actual method should I be using, containsObject or containsObjectIdenticalTo:? If that is not so, what contains method gets invoked under the hood of addObject:? This is important to me because if I pass an object to containsObject: it would return true, but if I pass it to containsObjectIdenticalTo: it would return false.

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  • iPhone Exception Handling

    - by Coocoo4Cocoa
    I have one crash in my iPhone application that does throw an NSException. The crash reports are completely ambiguous in where the error is and what exactly is causing it. Is there a smart way for me to set a top level exception handler somewhere to see what is causing it? I can't replicate the problem myself, but a few of my beta users certainly can. What's a smart way to handle a problem of this nature?

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  • How do I add NSDecimalNumbers?

    - by Terry B
    OK this may be the dumb question of the day, but supposing I have a class with : NSDecimalNumber *numOne = [NSDecimalNumber numberWithFloat:1.0]; NSDecimalNumber *numTwo = [NSDecimalNumber numberWithFloat:2.0]; NSDecimalNumber *numThree = [NSDecimalNumber numberWithFloat:3.0]; Why can't I have a function that adds those numbers: - (NSDecimalNumber *)addThem { return (self.numOne + self.numTwo + self.numThree); } I apologize in advance for being an idiot, and thanks!

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  • NSString stringWithContentsOfFile failing with what seems to be the wrong error code

    - by deanWombourne
    Hello. I'm trying to load a file into a string. Here is the code I'm using: NSError *error = nil; NSString *fullPath = [[NSBundle mainBundle] pathForResource:filename ofType:@"html"]; NSString *text = [NSString stringWithContentsOfFile:fullPath encoding:NSUTF8StringEncoding error:&error]; When passed in @"about" as the filename, it works absolutely fine, showing the code works. When passed in @"eula" as the filename, it fails with 'Cocoa error 258', which translates to NSFileReadInvalidFileNameError. However, if I swap the contents of the files over but keep the names the same, the other file fails proving there is nothing wrong with the filename, it's something to do with the content. The about file is fairly simple HTML but the eula file is a massive mess exported from Word by the legal department. Does anyone know of anything inside a HTML file that could cause this error to be raised? Much thanks, Sam

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  • Need little assistance

    - by Umaid
    I am iterating in current days, so need little assistance for (int I=-1; I<30; I++) { for (int J=0; J=30; J++) { for (int K=1; K=30; K++) { SELECT rowid,Month, Day, Advice from MainCategory where Month= 'May ' and Day in ((cast(strftime('%d',date('now','I day')) as Integer)),(cast(strftime('%d',date('now','J day')) as Integer)),(cast(strftime('%d',date('now','K day')) as Integer))); } } } What if i want to go in reverse order also for (int I=-1; I<30; I--) { for (int J=0; J=30; J--) { for (int K=1; K=30; K--) { SELECT rowid,Month, Day, Advice from MainCategory where Month= 'May ' and Day in ((cast(strftime('%d',date('now','I day')) as Integer)),(cast(strftime('%d',date('now','J day')) as Integer)),(cast(strftime('%d',date('now','K day')) as Integer))); } } } On every previous click, i want to fetch 3 records so do i need to iterate till 3 or make it on all record 30 in a month from which i want to fetch.

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  • Is it possible to have a sound play before/during the splash screen?

    - by Jeff
    My app takes a few seconds to load and I have a splash screen. Once "viewDidLoad" I have a little sound play. I feel that the sound would be in better use if it started playing when the splash screen popped up. Is it possible to have a sound start before/during the splash screen? Here is my code: (under viewDidLoad) NSString *soundFilePath = [[NSBundle mainBundle] pathForResource: @"intorSound" ofType: @"aif"]; NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath]; player = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil]; [player setVolume: soundVolumeValue]; // available range is 0.0 through 1.0 [player play]; [fileURL release]; Thank you for your time!

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  • Mail attachement on iPhone

    - by Infinity
    Hello guys! Is there a way to get the attachements from the Mail app on the iPhone? I've seen some apps which can do it. But how? Can you point me on the right way? I was trying with the MessageUI, but I don't think it is the right way.

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  • Creating a "permanent" Cocoa object

    - by quixoto
    I have an object factory that hands out instances of certain "constant" objects. I'd like these objects to be protected against bad memory management by clients. This is how I've overridden the class's key methods. Am I missing anything (code or other considerations)? - (id)retain { return self; } - (NSUInteger)retainCount { return UINT_MAX; } - (void)release { // nothing. }

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  • How can I simply change a class variable from another class in ObjectiveC?

    - by Daniel
    I simply want to change a variable of an object from another class. I can compile without a problem, but my variable always is set to 'null'. I used the following code: Object.h: @interface Object : NSObject { //... NSString *color; //... } @property(nonatomic, retain) NSString* color; + (id)Object; - (void)setColor:(NSString*)col; - (NSString*)getColor; @end Object.m: +(id)Object{ return [[[Object alloc] init] autorelease]; } - (void)setColor:(NSString*)col { self.color = col; } - (NSString*)getColor { return self.color; } MyViewController.h #import "Object.h" @interface ClassesTestViewController : UIViewController { Object *myObject; UILabel *label1; } @property UILabel *label1; @property (assign) Object *myObject; @end MyViewController.m: #import "Object.h" @implementation MyViewController @synthesize myObject; - (void)viewDidLoad { [myObject setColor:@"red"]; NSLog(@"Color = %@", [myObject getColor]); [super viewDidLoad]; } The NSLog message is always Color = (null) I tried many different ways to solve this problem, but no success. Any help would be appreciated.

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  • Call a function from another Class - Obj C

    - by AndrewDK
    I'm trying to figure out how I can call a function from another one of my classes. I'm using a RootViewController to setup one of my views as lets say AnotherViewController So in my AnotherViewController im going to add in on the .h file @class RootViewController And in the .m file im going to import the View #import "RootViewController.h" I have a function called: -(void)toggleView { //do something } And then in my AnotherViewController I have a button assigned out as: -(void)buttonAction { //} In the buttonAction I would like to be able to call the function toggleView in my RootViewController. Can someone clarify on how I do this. I've tried adding this is my buttonAction: RootViewController * returnRootObject = [[RootViewController alloc] init]; [returnRootObject toggleView]; But I dont think that's right. Thanks in advanced.

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  • GUI Agent accepts statuses from Daemon and shows it using progress indicator

    - by Pavel
    Hi to all! My application is a GUI agent, which communicate with daemon through the unix domain socket, wrapped in CFSocket.... So there are main loop and added CFRunLoop source. Daemon sends statuses and agent shows it with a progress indicator. When there are any data on socket, callback function begin to work and at this time I have to immediately show the new window with progress indicator and increase counter. //this function initiate the runloop for listening socket - (int) AcceptDaemonConnection:(ConnectionRef)conn { int err = 0; conn->fSockCF = CFSocketCreateWithNative(NULL, (CFSocketNativeHandle) conn->fSockFD, kCFSocketAcceptCallBack, ConnectionGotData, NULL); if (conn->fSockCF == NULL) err = EINVAL; if (err == 0) { conn->fRunLoopSource = CFSocketCreateRunLoopSource(NULL, conn->fSockCF, 0); if (conn->fRunLoopSource == NULL) err = EINVAL; else CFRunLoopAddSource(CFRunLoopGetCurrent(), conn->fRunLoopSource, kCFRunLoopDefaultMode); CFRelease(conn->fRunLoopSource); } return err; } // callback function void ConnectionGotData(CFSocketRef s, CFSocketCallBackType type, CFDataRef address, const void * data, void * info) { #pragma unused(s) #pragma unused(address) #pragma unused(info) assert(type == kCFSocketAcceptCallBack); assert( (int *) data != NULL ); assert( (*(int *) data) != -1 ); TStatusUpdate status; int nativeSocket = *(int *) data; status = [agg AcceptPacket:nativeSocket]; // [stWindow InitNewWindow] inside [agg SendUpdateStatus:status.percent]; } AcceptPacket function receives packet from the socket and trying to show new window with progress indicator. Corresponding function is called, but nothing happens... I think, that I have to make work the main application loop with interrupting CFSocket loop... Or send a notification? No idea....

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  • How to remove an observer for NSNotification in a UIView?

    - by sudo rm -rf
    Hello! I've added an observer in a custom UIView I've created under initWithFrame:. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateZipFromLocation:) name:@"zipFoundFromLocation" object:nil]; The problem is, this view is a subview. When the view is loaded again, it calls the initWithFrame message again, thus adding two observers and so on. How can I remove the observer when the view is going to disappear? Since it is a UIView, it says that viewWillDisappear:(BOOL)animated is not a valid method. Any ideas?

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