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  • AVAudioPlayer via Speakers

    - by Mark
    I got the following code: - (id)init { if (self = [super init]) { UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback; AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory); UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker; AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride); [[AVAudioSession sharedInstance] setDelegate:self]; [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil]; [[AVAudioSession sharedInstance] setActive:YES error:nil]; } return self; } But somehow the sound does not want to come out of the speakers, can someone see what I am doing wrong? The code I use for playing is: AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFilePathURL error:nil]; [player prepareToPlay]; [player setVolume:1.0]; [player play];

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  • iPad SDK, how to handle orientation with an UIImageView

    - by Salah
    Hello I'm developing an app for iPad and I try to handle multiple orientation. My app contains a webview and a loading UIImageView that appears when my webview is loading content. This UIImageView has a background image that I set in InterfaceBuilder. When I change orientation to landscape, the image is cut. I'd like the UIImageView to set image-portrait.png when the ipad is in portrait mode and image-landscape.png when it's in landscape mode. Thank you for your help and advices! Screenshots :

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  • detecting double free object, release or not release ...

    - by mongeta
    Hello, If we have this code in our interface .h file: NSString *fieldNameToStoreModel; NSFetchedResultsController *fetchedResultsController; NSManagedObjectContext *managedObjectContext; DataEntered *dataEntered; In our implementation file .m we must have: - (void)dealloc { [fieldNameToStoreModel release]; [fetchedResultsController release]; [managedObjectContext release]; [dataEntered release]; [super dealloc]; } The 4 objects are assigned from a previous UIViewController, like this: UIViewController *detailViewController; detailViewController = [[CarModelSelectViewController alloc] initWithStyle:UITableViewStylePlain]; ((CarModelSelectViewController *)detailViewController).dataEntered = self.dataEntered; ((CarModelSelectViewController *)detailViewController).managedObjectContext = self.managedObjectContext; ((CarModelSelectViewController *)detailViewController).fieldNameToStoreModel = self.fieldNameToStoreModel; [self.navigationController pushViewController:detailViewController animated:YES]; [detailViewController release]; The objects that now live in the new UIViewController, are the same as the previous UIViewController, and I can't release them in the new UIViewController ? The problems is that sometimes, my app crashes when I leave the new UIViewController and go to the previous one, not always. Normally the error that I'm getting is a double free object. I've used the malloc_error_break but I'm still not sure wich object is. Sometimes I can go from the previous UIViewController to the next one and come back 4 or 5 times, and the double free object appears. If I don't release any object, all is working and Instruments says that there are no memory leaks ... So, the final question, should I release those objects here or not ? Thanks, m.

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  • Issue with CAAnimation and CALayer Transforms

    - by Brian
    I have a CALayer that I want to animate across the screen. I have created two methods: one slide open the layer and one to slide close. These both work by assigning a property to the layer's transform property. Now I want to use a CAKeyFrameAnimation to slide open the layer. I got this working so the layer slides open, but now I can't slide the layer close using my old method. I am trying to figure out why this is. Any help would be great. Code: - (id)init { if( self = [super init] ) { bIsOpen = NO; closeTransform = self.transform; openTransform = CATransform3DMakeTranslation(-235.0, 0.0, 0.0); } return self; } - (void)closeMenu { if( bIsOpen ) { self.transform = closeTransform; bIsOpen = !bIsOpen; } } - (void)openMenu { if( !bIsOpen ) { CAKeyframeAnimation *closeAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform"]; closeAnimation.duration = 1.0; closeAnimation.removedOnCompletion = NO; closeAnimation.fillMode = kCAFillModeForwards; closeAnimation.values = [NSArray arrayWithObjects:[NSValue valueWithCATransform3D:closeTransform],[NSValue valueWithCATransform3D:openTransform],nil]; closeAnimation.timingFunctions = [NSArray arrayWithObject:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]]; [self addAnimation:closeAnimation forKey:@"transform"]; bIsOpen = !bIsOpen; } }

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  • How can I launch app store from my application

    - by Tankista
    Im trying to implement button which opens app store application from my app. I use this simple line of code, which opens safari but not app store application. [[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"http://itunes.apple.com/sk/app/tweetie-2/id333903271?mt=8"]]; I dont know whats wrong, is the URL format correct? I was following this document. All related questions in stackoverflow are outofdate I suppose.

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  • I-Phone: Trying to check an Array for an item based on a string produced

    - by MB
    Hello! I'm writing a program that will concatenate a string based on letters, and then check an array to see if that string exists. If it does, then it will print a line in IB saying so. I've got all the ins-and-outs worked out, save for the fact that the simulator keeps crashing on me! Here's the code: -(IBAction)checkWord:(id)sender { NSMutableArray *wordList = [NSMutableArray arrayWithObjects:@"BIKE", @"BUS", @"BILL", nil]; if([wordList containsObject:theWord]) { NSString *dummyText = [[NSString alloc] initWithFormat:@"%@ is a real word.", theWord]; checkText.text = dummyText; [dummyText release]; } } "theWord" is the string that is being referenced against the Array to see if it matches an item contained within it. In this case "BIKE" is 'theWord'. Thank you for your help in advance! -MB

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  • how to delete contents from plist programmatically ?

    - by srikanth rongali
    I have a plist file. I want to delete the data from the plist. How can I do it programmatically ? My Plist have an array cells. cells is filled by dictionaries . Each dictionary is filled by string. I used the following way. NSString* plistPath1 = [[NSBundle mainBundle] pathForResource:@"details" ofType:@"plist"]; [cells removeObjectAtIndex:[clickedButtonPath row]]; NSMutableArray *array1 = [[NSMutableArray alloc] initWithCapacity:4]; array1 = cells; [array1 writeToFile:plistPath1 atomically: YES]; But the plist is not taking the changes. Thank you.

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  • NSUserDefaults not saving properly

    - by BWC
    Hey Guys I'm having issues with NSUserDefaults and I don't quite understand what's going on My App has 5 levels and each level does the exact same thing with NSUserDefaults (Retrieves the levels defaults, changes the value as the user plays the level and then sets the defaults and syncronizes at the end of the level) the first 4 levels...work without a hitch but the last level doesn't save the values. The app doesn't crash and the last level isn't the very last thing that happens, And I even have the defaults synchronized when the application terminates. Is there a max size on the NSUserDefaults or is there anything anyone can think of that I haven't, I'll post the code below but like I said the first four levels work perfectly //header NSUserDefaults *userData; @property(nonatomic,retain) NSUserDefaults *userData; //class file //Sets the boolean variables for the class to use userData = [NSUserDefaults standardUserDefaults]; boolOne = [userData boolForKey:@"LevelFiveBoolOne"]; boolTwo = [userData boolForKey:@"LevelFiveBoolTwo"]; boolThree = [userData boolForKey:@"LevelFiveBoolThree"]; boolFour = [userData boolForKey:@"LevelFiveBoolFour"]; boolFive = [userData boolForKey:@"LevelFiveBoolFive"]; boolSix = [userData boolForKey:@"LevelFiveBoolSix"]; boolSeven = [userData boolForKey:@"LevelFiveBoolSeven"]; //End Of Level [userData setBool:boolOne forKey:@"LevelFiveBoolOne"]; [userData setBool:boolTwo forKey:@"LevelFiveBoolTwo"]; [userData setBool:boolThree forKey:@"LevelFiveBoolThree"]; [userData setBool:boolFour forKey:@"LevelFiveBoolFour"]; [userData setBool:boolFive forKey:@"LevelFiveBoolFive"]; [userData setBool:boolSix forKey:@"LevelFiveBoolSix"]; [userData setBool:boolSeven forKey:@"LevelFiveBoolSeven"]; [userData synchronize]; When when I switch to the view that uses these defaults they values are correct but when I terminate the application and restart it, these values aren't saved, every other level does the exact same process this is the only level that doesn't work. I've stared at this for quite awhile and I'm hoping someone out there has run into the same problem and can give me some insight on how they resolved it. Thank you in Advance BWC

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  • UIDatePicker - Problem Localizing

    - by Smorpheus
    Hello, I've created a UIDatePicker in my app and I also have support for several languages. My UIDatePicker is created in Interface Builder, and I have created a seperate localization XIB so I can customize my UIDatePicker. Setting the "Locale" option in IB appears to do nothing. Attempting to change my DatePicker programatically with Locale and NSCalender also do nothing via the following code: NSLocale * locale = [[NSLocale alloc] initWithLocaleIdentifier:@"es_ES"]; datePicker.locale = locale; datePicker.calender = [locale objectForKey:NSLocaleCalender]; This results in an english picker. Here's the really weird thing though. The word for "Today" is translated. As seen in the attached screenshot. (OK I'm not allowed to post images. But imagine a Date & Time picker with "May" in English and "Today" written "Ajourd'hui". Based on what I've read, adding the UIDatePicker programatically doesn't seem to help much.

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  • UISearchDisplayController - how to display search result with only by scope button selected but empt

    - by billibala
    The UISearchDisplayController is very handy and implementing search is pretty straightforward. However, I bump into problem when, in my app, I want to display search result with empty search string but selected scope button. It seems like it's a must to enter some search string in order to get the search result table being initialized and displayed. Is there any ways to display search result immediately after user has picked a scope but not entered search word yet? Thanks Bill

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  • Using GKPeerPickerController within a selector from a Cocos2D CCMenuItem

    - by Mark Hazlett
    Hey everyone, So i'm trying to use GameKit along with Cocos2D so that when a user clicks on the multiplayer menu item it will display the GKPeerPickerController. I'm however, running into some snags. It doesn't seem to want to compile. However, it doesn't give me an error inside of the code that's in my selector. Anyways here's the code... @implementation GameOverLayer - (id) init { self = [super init]; if (self != nil) { [CCMenuItemFont setFontSize:20]; [CCMenuItemFont setFontName:@"Helvetica"]; CCMenuItem *start = [CCMenuItemFont itemFromString:@"Play Again!" target:self selector:@selector(startGame:)]; CCMenuItem *connect = [CCMenuItemFont itemFromString:@"Multiplayer" target:self selector:@selector(connect:)]; CCMenu *menu = [CCMenu menuWithItems:start,connect, nil]; [menu alignItemsVertically]; [self addChild:menu]; } return self; } -(void)startGame: (id)sender { [[CCDirector sharedDirector] replaceScene: [HelloWorld scene]]; } -(void)connect: (id)sender { GKPeerPickerController *peerPicker; peerPicker = [[GKPeerPickerController alloc] init]; peerPicker.delegate = self; peerPicker.connectionTypesMask = GKPeerPickerConnectionTypeOnline | GKPeerPickerConnectionTypeNearby; [peerPicker show]; } @end The error message i'm getting is... ".obj_class_name_GKPeerPickerController", referenced from: Literal-Pointer@_OBJC@_cls_refs@GKPeerPickerController in GameOverScene.o Symbol(s) not found Collect2: id returned 1 exit status Any ideas?

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  • How to efficiently save changes made in UI/main thread with Core Data?

    - by Jaanus
    So, there have been several posts here about importing and saving data from an external data source into Core Data. Apple documents a reasonable pattern for this: "import and save on background thread, merge saved objects to main thread." All fine and good. I have a related but different problem: the user is modifying data in the UI and main thread, and thus modifies state of some objects in the managed object context (MOC). I would like to save these changes from time to time. What is a good way to do that? Now, you could say that I could do the same: create a background thread with its own MOC and pass the changed objectID-s there. The catch-22 for me with this is that an object's ID changes when it is saved, and I cannot guarantee the order of things happening. I may end up passing a different objectID into the background thread for the same object, based on whether the object has been previously saved or not, and I don't know if Core Data can resolve this and see that different objectID-s are pointing to the same object and not create duplicates for me. (I could test this, but I'm lazywebbing with this question first.) One thought I had: I could always do MOC saves on a background thread, and queue them up with operationqueue, so that there is always only one save in progress. I would not create a new MOC, I would just use the same MOC as in main thread. Now, this is not thread safe and when someone modifies the MOC in main thread while it is being saved in background thread, the results will probably be catastrophic. But, minus the thread safety, you can see what kind of solution I'd wish for. To be clear, the problem I need to fix is that if I just do the save in main thread, it blocks the UI for an unacceptably long period of time, I want to move the save to background thread. So, questions: what about the reasoning of an object ID changing during saving, and Core Data being able to resolve them to the same object? Would this be the right way of addressing this problem? any other good ways of doing this?

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  • Trouble using opaque pointers in Objective C++

    - by morgancodes
    The answer to this quesion explains that opaque pointers are a good way to include C++ member variables in an Objective C++ header. I'm getting compile errors when trying to follow the example. Here's the relevant code from my header, with the corresponding compiler errors shown as comments: struct ADSR_opaque; // error: forward declaration of 'struct ADSR_opaque' @interface LoopyPulser : NSObject{ float _pulseRate; UInt32 tickInterval; UInt32 step; InMemoryAudioFile * audioFilePlayer; ADSR_opaque* env; // error: expected specifier-qualifier-list before 'ADSR_opaque' Pattern * pattern; float loopLengthRatio; float volume; } Is there something simple I'm doing wrong here?

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  • Pop Over Control on iPad Problem !

    - by Momeks
    Hi , i try to load a view via UIPopover but my app crash after tap the popover button , i tried to solve it but i don't understand ! here is my code : - (IBAction)calendarPopUp:(id)sender { PopViewController *cal = [[PopViewController alloc]init]; //The compiler tells me the problem comes from this line : UIPopoverController *popOver = [[UIPopoverController alloc] initWithContentViewController:cal]; [popOver setDelegate:self]; [popOver presentPopoverFromRect:CGRectMake(113, 64, 226, 129) inView:self permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES]; [popOver setPopoverContentSize:CGSizeMake(226, 129)]; }

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  • iPad UIColor Saturation Issues

    - by Carter Allen
    I am trying to draw a UIColor on the screen of a view-based app, and I am trying to do so using HSB. It is absolutely necessary for me to use HSB in this case. I can create a UIColor object with any S value from 0.0f to 0.75f, but past that the numerical changes have no effect on the actual saturation displayed. I need it to be 1.0f, but it is still using 0.75f. Any ideas on why it is doing that, and how I can make it work?

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  • When to call release on NSURLConnection delegate?

    - by Kieran H
    Hi, When passing a delegate to the a NSUrlConnection object like so: [[NSURLConnection alloc] initWithRequest:request delegate:handler]; when should you call release on the delegate? Should it be in connectionDidFinishLoading? If so, I keep getting exec_bad_access. I'm seeing that my delegates are leaking through instruments. Thanks

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  • Help - Three20 Distribution Build

    - by Lukas
    Hey there, I just wanted to build my App for submitting it to the AppStore - it includes the widely used three20 framework. As the Debug Versions on the Dev-Devices worked great, i'm having trouble compiling the project for distribution. XCode says: No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=armv6, VALID_ARCHS=i386). Any idea what's happening there? I've tried to google it, but i haven't found a solution yet. Thanks!

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  • Using malloc/free in Objective-C object

    - by Itamar Katz
    I have a class AudioManager with a member of type AudioBufferList *. (This is a struct declared in the CoreAudio framework). Since AudioBufferList is not a NSObject, I cannot retain it, so I have to alloc/free it (correct me if I'm wrong). My question is, where is the 'right' place to free it? Currently I am doing it in the dealloc method of AudioManager. If I understand correctly, this method is invoked automatically once the release message is sent to the instance of AudioManager --- is that true? Is there any other recommended practice regarding using alloc/free on non-objects members of Objective-C objects? Edit: From Apples documentation: Subclasses must implement their own versions of dealloc to allow the release of any additional memory consumed by the object—such as dynamically allocated storage for data or object instance variables owned by the deallocated object. After performing the class-specific deallocation, the subclass method should incorporate superclass versions of dealloc through a message to super: Which makes things a little bit clearer - but more insights are appreciated.

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  • UIWebView memory management

    - by wolfrevo
    Hello, I have a problem with memory management. I am developing an application that makes heavy use of UIWebView. This app generates dynamically lots of UIWebViews while loading content from my server. Some of these UIWebViews are quite large and have a lot of pictures. If I use instruments to detect leaks, I do not detect any. However, lots of objects are allocated and I suspect that has to do with the UIWebViews. When the webviews release because no longer needed, it appears that not all memory is released. I mean, after a request to my server the app creates an UITableView and many webviews (instruments say about 8Mb). When user tap back, all of them are released but memory usage only decrements about 2-3 Mb, and after 5-10 minutes using the app it crashes. Am I missing something? Anyone know what could be happening? Thank you!

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  • First Letter Section Headers with Core Data

    - by Cory Imdieke
    I'm trying to create a list of people sorted in a tableView of sections with the first letter as the title for each section - a la Address Book. I've got it all working, though there is a bit of an issue with the sort order. Here is the way I'm doing it now: NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:[NSEntityDescription entityForName:@"Contact" inManagedObjectContext:context]]; NSSortDescriptor *fullName = [[NSSortDescriptor alloc] initWithKey:@"fullName" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:fullName, nil]; [request setSortDescriptors:sortDescriptors]; [fullName release]; [sortDescriptors release]; NSError *error = nil; [resultController release]; resultController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:@"firstLetter" cacheName:nil]; [resultController performFetch:&error]; [request release]; fullName is a standard property, and firstLetter is a transient property which returns - as you'd expect - the first letter of the fullName. 95% of the time, this works perfectly. The problem is the result controller expects these two "lists" (the sorted fullName list and the sorted firstLetter list) to match exactly. If I have 2 contacts like John and Jack, my fullName list would sort these as Jack, John every time but my firstLetter list might sort them as John, Jack sometimes as it's only sorting by the first letter and leaving the rest to chance. When these lists don't match up, I get a blank tableView with 0 items in it. I'm not really sure how I should go about fixing this issue, but it's very frustrating. Has anyone else run into this? What did you guys find out?

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  • Why Is Bottom Half of Custom UIActionSheet with UIDatePicker Disabled?

    - by Gorgando
    Everything seems to be working great with my UIActionSheet that contains a UIDatePicker except that the bottom half of the DatePicker is disabled. Visually there is a shadow that makes the bottom half of the picker darker than the top half. Everything in the bottom half is disabled and I can't for the life of me figure out how to enable it. I also noticed in my other "normal" UIActionSheets that just contain buttons, the bottom half of the cancel buttons are disabled. This is the code for my custom UIActionSheet: self.datePickerView = [[UIDatePicker alloc] init]; self.datePickerView.datePickerMode = UIDatePickerModeDate; self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"Choose a Follow-up Date" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Done", nil]; [self.actionSheet showInView:self.view]; [self.actionSheet addSubview:self.datePickerView]; [self.actionSheet sendSubviewToBack:self.datePickerView]; [self.actionSheet setBounds:CGRectMake(0,0,320, 500)]; CGRect pickerRect = self.datePickerView.bounds; pickerRect.origin.y = -95; self.datePickerView.bounds = pickerRect; I've tried several things including sendSubviewToBack, BringSubviewToFront, etc but I have not had any luck. I appreciate your help!

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  • How to remove NSString Related Memory Leaks?

    - by Rahul Vyas
    in my application this method shows memory leak how do i remove leak? -(void)getOneQuestion:(int)flashcardId categoryID:(int)categoryId { flashCardText = [[NSString alloc] init]; flashCardAnswer=[[NSString alloc] init]; //NSLog(@"%s %d %s", __FILE__, __LINE__, __PRETTY_FUNCTION__, __FUNCTION__); sqlite3 *MyDatabase; sqlite3_stmt *CompiledStatement=nil; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *MyDatabasePath = [documentsDirectory stringByAppendingString:@"/flashCardDatabase.sqlite"]; if(sqlite3_open([MyDatabasePath UTF8String],&MyDatabase) == SQLITE_OK) { sqlite3_prepare_v2(MyDatabase, "select flashCardText,flashCardAnswer,flashCardTotalOption from flashcardquestionInfo where flashCardId=? and categoryId=?", -1, &CompiledStatement, NULL); sqlite3_bind_int(CompiledStatement, 1, flashcardId); sqlite3_bind_int(CompiledStatement, 2, categoryId); while(sqlite3_step(CompiledStatement) == SQLITE_ROW) { self.flashCardText = [NSString stringWithUTF8String:(char *)sqlite3_column_text(CompiledStatement,0)]; self.flashCardAnswer= [NSString stringWithUTF8String:(char *)sqlite3_column_text(CompiledStatement,1)]; flashCardTotalOption=[[NSNumber numberWithInt:sqlite3_column_int(CompiledStatement,2)] intValue]; } sqlite3_reset(CompiledStatement); sqlite3_finalize(CompiledStatement); sqlite3_close(MyDatabase); } } this method also shows leaks.....what's wrong with this method? -(void)getMultipleChoiceAnswer:(int)flashCardId { if(optionsList!=nil) [optionsList removeAllObjects]; else optionsList = [[NSMutableArray alloc] init]; sqlite3 *MyDatabase; sqlite3_stmt *CompiledStatement=nil; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *MyDatabasePath = [documentsDirectory stringByAppendingString:@"/flashCardDatabase.sqlite"]; if(sqlite3_open([MyDatabasePath UTF8String],&MyDatabase) == SQLITE_OK) { sqlite3_prepare_v2(MyDatabase,"select OptionText from flashCardMultipleAnswer where flashCardId=?", -1, &CompiledStatement, NULL); sqlite3_bind_int(CompiledStatement, 1, flashCardId); while(sqlite3_step(CompiledStatement) == SQLITE_ROW) { [optionsList addObject:[NSString stringWithUTF8String:(char *)sqlite3_column_text(CompiledStatement,0)]]; } sqlite3_reset(CompiledStatement); sqlite3_finalize(CompiledStatement); sqlite3_close(MyDatabase); } }

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