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  • UITableView Cell IndexPath

    - by Reonarudo
    Hello, Can anyone tell me how can I get a cell IndexPath? I was saving the IndexPath in the tableView: cellForRowAtIndexPath: method but this only loads when the cell is viewed and I need to know its index path on the viewDidLoad method. this resulted in a null value because as I said it only loads its value after the cell was viewed once. Thank you. EDIT The intention is being able to jump to a specific cell that has its specific number but its not linear with the sections and rows count.

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  • How do I authenticate a Twitter user and access the API without leaving my iPhone app?

    - by thebossman
    I'd like to allow users to send out Tweets from my iPhone app. That's all the functionality I need at the moment. From what I know of the Twitter API, there's a standard authentication mechanism, which allows the developer to include the user's name and password in the request string that the application sends to Twitter. This method will no longer be supported come June 30, 2010. Given the timeframe, the better other choice is oAuth. One of the caveats of oAuth is that it requires a UIWebView to pop up within the app to allow the user to enter his or her credentials or a PIN number. None of the Twitter apps on my phone do this, however: Tweetie, TweetDeck and Twitterific. I assume they're using the first authentication method, but it seems like Twitter wouldn't deprecate an API that would hurt the user experience across the board. There must be an alternative method--what am I missing?

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  • Cover flow model screen adjust in iphone

    - by abdulsamad
    Hi All, Below is the link for making the cover flow model in iphone. This is a sample tutorial. http://www.chaosinmotion.com/flowcover.m Can any one tell me how can i make the cover flow model to adjust some where up on the screen. Currently it is in the centre of the screen i want if about 70 to 80pixels to move up in the screen. Your help will be highly appreciated.

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  • setContentOffset only works if animated is set to YES

    - by Sheehan Alam
    I have a UITableView which I would like to be displayed 100px down. For some reason this only works when animated is set to YES. Why is this? - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; /*[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:1 inSection:0] atScrollPosition:UITableViewScrollPositionNone animated:NO];*/ /*[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathWithIndex:1] atScrollPosition:UITableViewScrollPositionNone animated:NO];*/ [self.tableView setContentOffset:CGPointMake(0,100) animated:YES]; }

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  • UIAccelerometer

    - by xyz
    hello, I want to make a iPhone application which makes use of UIAccelerometer and the application is as follows... As you move your iPhone in space, Air Paint(my application) creates a path of this movement mimicking a form of light graffiti.can any body have an idea of how to go about it?

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  • Inheritance issue with ivar on the iPhone

    - by Buffalo
    I am using the BLIP/MYNetwork library to establish a basic tcp socket connection between the iPhone and my computer. So far, the code builds and runs correctly in simulator but deploying to device yields the following error: error: property 'delegate' attempting to use ivar '_delegate' declared in super class of 'TCPConnection' @interface TCPConnection : TCPEndpoint { @private TCPListener *_server; IPAddress *_address; BOOL _isIncoming, _checkedPeerCert; TCPConnectionStatus _status; TCPReader *_reader; TCPWriter *_writer; NSError *_error; NSTimeInterval _openTimeout; } /** The delegate object that will be called when the connection opens, closes or receives messages. */ @property (assign) id<TCPConnectionDelegate> delegate; /** The delegate messages sent by TCPConnection. All methods are optional. */ @protocol TCPConnectionDelegate <NSObject> @optional /** Called after the connection successfully opens. */ - (void) connectionDidOpen: (TCPConnection*)connection; /** Called after the connection fails to open due to an error. */ - (void) connection: (TCPConnection*)connection failedToOpen: (NSError*)error; /** Called when the identity of the peer is known, if using an SSL connection and the SSL settings say to check the peer's certificate. This happens, if at all, after the -connectionDidOpen: call. */ - (BOOL) connection: (TCPConnection*)connection authorizeSSLPeer: (SecCertificateRef)peerCert; /** Called after the connection closes. You can check the connection's error property to see if it was normal or abnormal. */ - (void) connectionDidClose: (TCPConnection*)connection; @end @interface TCPEndpoint : NSObject { NSMutableDictionary *_sslProperties; id _delegate; } - (void) tellDelegate: (SEL)selector withObject: (id)param; @end Does anyone know how I would fix this? Would I simply declare _delegate as a public property of the base class "TCPEndPoint"? Thanks for the help ya'll!

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  • Consecutive 'if' statements

    - by Ben Packard
    How can I check one thing AND THEN another, if the first is true? For example, say I have a shopping basket object, and I only want to do something if the basket has been created AND it isn't empty. I've tried: if (basket && [basket numberOfItems >0])... But the second condition is evaluated even if the first fails, resulting in a crash (presumably because i'm calling numberOfItems on an object that doesn't exist). I can nest them, but this seems a bit ugly, and more to the point is problematic. Say I want to do one thing if the basket exists AND isn't empty, but another if either isn't true. That doesn't really work well in nested if statements.

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  • Monitor Network Traffic Mac

    - by Tom Irving
    I'm wondering how to go about monitoring network traffic on my Mac. Like the way activity monitor does it, showing the bytes / packets in and out. I know it's a bit vague, but I'm unsure of the best place to start.

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  • Tell system events to keystroke in Xcode?

    - by user354779
    Hello, I'm making an application, in which I need to run a code that will tell system events to keystroke a certain phrase. Like in an AppleScript, I would do: Tell Application "System Events" to keystroke "This is a test" I don't know how to do this from Xcode, and I would really appreciate any help. Thank you!

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  • How to insert/update multiple record into SQLite database in a single query.

    - by TuanCM
    Hi Guy. Is it possible to insert/update multiple record in SQLite database using EGODatabase wrapper. If I'm correct I think we can do it with FMDatabase by wrapping it between [db beginTransaction] and [db commit]. I wonder if we can do the same thing by using EGODatabase. Following is the code sample from FMDatabase project: [db beginTransaction]; i = 0; while (i++ < 20) { [db executeUpdate:@"insert into test (a, b, c, d, e) values (?, ?, ?, ?, ?)" , @"hi again'", // look! I put in a ', and I'm not escaping it! [NSString stringWithFormat:@"number %d", i], [NSNumber numberWithInt:i], [NSDate date], [NSNumber numberWithFloat:2.2f]]; } [db commit];

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  • AVAudioPlayer problem regarding song overlaping in iPhone

    - by riteshkumar1905
    I have using AVAudioPlayer in my app but the problem is that when i play the song from list it will played while before stopping the song i am again goes to song list then select another song then both song will start playing simultaneously so please tell me the code which will terminate my first song. i am using avTouchContoller & avTouchViewController in my app. so i am enclosing the code for song which is written in avController.m & avTouchViewController.m as follow for single song avtouchController.m switch (flag) { case 1: //[self stop]; fileURL = [[NSURL alloc] initFileURLWithPath: [[NSBundle mainBundle] pathForResource:@"Aarti Keeje" ofType:@"aac"]]; self._player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil]; //self._player=newplayer; //[newplayer release]; if (self._player) { _fileName.text = [NSString stringWithFormat: @"%@ (%d ch.)", [[self._player.url relativePath] lastPathComponent], self._player.numberOfChannels, nil]; [self updateViewForPlayerInfo]; [self updateViewForPlayerState]; } [fileURL release]; break;

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  • How to release a "PopUp" view"?

    - by david
    I have this class that shows a popup. I do a alloc-init on it and it comes up. DarkVader* darkPopUp = [[DarkVader alloc] init:theButton helpMessage:[theButton.titleLabel.text intValue] isADay:NO offset:0]; It shows itself and if the user presses Ok it disappears. When do I release this? I could do a [self release] in the class when the OK button is pressed. Is this correct? If I do this the Analyzer says it has a retain count of +1 and gets leaked in the calling function. If I release it just after the alloc-init the Analyzer says it has a retain count of +0 and i should not release it. DLog(@"DarkVader retain count: %i", [darkPopUp retainCount]); says it has a retain count of 2. I'm confused. In short my question is: How do I release an object that gets initialized does some work and ends but no one is there to release it in the calling function.

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  • Handling undo and edit flag on window with several model objects

    - by Rui Pacheco
    Hi, I've a window that will hold several instances of a model object, listed in a table. The model object is updated using a text view. What is the best way to keep the edit flag and undo manager in synch with the content of the different model objects? I'm thinking creating an instance of the undo manager on the model object and manually set the undo manager for the text view every time the user choses a new model object. Does the undo manager also handle the edited flag?

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  • Skype Mac API - Use AppleScript or 5 year old API?

    - by Andrew
    I have a x86_64 app that I would like to have optionally read Skype status messages. However, the 5 year old skype mac framework is 32-bit, and if there is a way to have that compile within a 64-bit app, I haven't found it. My question is, basically, how should I go about doing this? I really only need to get and set the USERSTATUS AWAY/ONLINE string. Using AppleScript, a "Should Skype allow this" dialog pops up... every time. This is highly inefficient and downright irritating. Advice? I'm considering writing a 32-bit CLI wrapper, but that seems like overkill.

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  • iPod library song path access

    - by Narendra Kumar
    I studied a lot but did not find any good answer. My problem is i am calculating beats per minute of song.I used Bass api for that, now problem is i am able to get bpm of a file which i have in my resource folder but i have to get bpm of all songs of iPod library. I am getting path of song from MPMediaItemPropertyAssetURL property of MpMediaItem but when passing this one in api api is saying stream cant load BASS_StreamCreateFile(). In my point of view i am not getting right path of song. How can we access valid path? Did any one access ipod library song with external api? Please help me . Thanks CODE IS THIS NSURL *assetURL = [song valueForProperty:MPMediaItemPropertyAssetURL]; NSString *respath = [NSString stringWithFormat:@"%@",[assetURL absoluteString]]; BASS_SetConfig(BASS_CONFIG_IOS_MIXAUDIO, 0); // Disable mixing. To be called before BASS_Init. if (HIWORD(BASS_GetVersion()) != BASSVERSION) { NSLog(@"An incorrect version of BASS was loaded"); } // Initialize default device. if (!BASS_Init(-1, 44100, 0, NULL, NULL)) { //textView.text = [NSString stringWithFormat:@"%@ CAN'T Load Stream",textView.text]; } DWORD chan1; if(!(chan1=BASS_StreamCreateFile(FALSE, [respath UTF8String], 0, 0, BASS_SAMPLE_LOOP))) { NSLog(@"Can't load stream!"); textView.text = [NSString stringWithFormat:@"%@ not loading...",textView.text]; } mainStream=BASS_StreamCreateFile(FALSE, [respath cStringUsingEncoding:NSUTF8StringEncoding], 0, 0, BASS_SAMPLE_FLOAT|BASS_STREAM_PRESCAN|BASS_STREAM_DECODE); float playBackDuration=BASS_ChannelBytes2Seconds(mainStream, BASS_ChannelGetLength(mainStream, BASS_POS_BYTE)); NSLog(@"Play back duration is %f",playBackDuration); HSTREAM bpmStream=BASS_StreamCreateFile(FALSE, [respath UTF8String], 0, 0, BASS_STREAM_PRESCAN|BASS_SAMPLE_FLOAT|BASS_STREAM_DECODE); //BASS_ChannelPlay(bpmStream,FALSE); BpmValue= BASS_FX_BPM_DecodeGet(bpmStream,0.0, playBackDuration, MAKELONG(45,256), BASS_FX_BPM_MULT2| BASS_FX_BPM_MULT2 | BASS_FX_FREESOURCE, (BPMPROCESSPROC*)proc); textView.text = [NSString stringWithFormat:@"%@ %f",textView.text,BpmValue];

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  • Whats the maximum key length in NSDictionary?

    - by x3ro
    Hey there, I'm currently working on an app which displays a bunch of files in a table, and you can add and remove them and whatsoever. To prevent duplicates in the table, I'd like to create a NSDictionary using the files full path as keys for another NSDictionary which contains all the file information, but I am a little concerned about the maximum key length of NSDictionary, and also whether this solution would be performance killer or not... Looking forward to your answers. Best regards, x3ro

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  • Calculate and display distance between userlocation and known point in Table View

    - by Claudio
    Hi, I have a table view with a list of hotel, and i want put in cell.detailTextLabel.text the distance beetween userlocation and hotel. How can obtain the coordinates of userlocation? I see on web that i need to use CLLocationManager but i don't understand how and where implement in my table view. Then,to get the distance,i do a "getDistancefrom" between userLocation and the coordinates of the hotel ? Thanks

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  • Adding items to a combo box's internal list programatically.

    - by Andrew
    So, despite Matt's generous explanation in my last question, I still didn't understand and decided to start a new project and use an internal list. - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { codesList = [[NSString alloc] initWithContentsOfFile: @".../.../codelist.txt"]; namesList = [[NSString alloc] initWithContentsOfFile: @".../.../namelist.txt"]; codesListArray = [[NSMutableArray alloc]initWithArray:[codesList componentsSeparatedByString:@"\n"]]; namesListArray = [[NSMutableArray alloc]initWithArray:[namesList componentsSeparatedByString:@"\n"]]; addTheDash = [[NSString alloc]initWithString:@" - "]; flossNames = [[NSMutableArray alloc]init]; [flossNames removeAllObjects]; for (int n=0; n<=[codesListArray count]; n++){ NSMutableString *nameBuilder = [[NSMutableString alloc]initWithFormat:@"%@", [codesListArray objectAtIndex:n]]; [nameBuilder appendString:addTheDash]; [nameBuilder appendString:[namesListArray objectAtIndex:n]]; [comboBoz addItemWithObjectValue:[NSMutableString stringWithString:nameBuilder]]; [nameBuilder release]; } } So this is my latest attempt at this and the list still isn't showing in my combo box. I've tried using the addItemsWithObjectValues outside the for loop along with the suggestions at this question: Is this the right way to add items to NSCombobox in Cocoa ? But still no luck. If you can't tell, I'm trying to combine two strings from the files with a hyphen in between them and then put that new string into the combo box. There are over 400 codes and matching names in the two files, so manually putting them in would be a huge chore, not to mention, I don't see what would be causing this problem. The compiler shows no warnings or errors, and in the IB, I have it set to use the internal list, but when I run it, the list is not populated unless I do it manually. Some things I thought might be causing it: Being in the applicationDidFinishLaunching: method Having the string and array variables declared as instance variables in the header (along with @property and @synth done to them) Messing around with using appendString multiple times with NSMutableArrays Nothing seems to be causing this to me, but maybe someone else will know something I don't. Thanks for the help.

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  • NSThread running a class

    - by Thomas Joulin
    Hi, Every the example I find on the internet (including Apple doc) sets the target to self like this : [NSThread detachNewThreadSelector:@selector(threadedTask) toTarget:self withObject:nil]; Since i would like to do a more complex task in background (involving multiple methods), I thought of creating a class Task called like this : Task *task = [[Task alloc] init]; [NSThread detachNewThreadSelector:@selector(main) toTarget:task withObject:nil]; but I wonder, how will be handled the instance variables of my class Task ? in my method main can I safely call methods of my class Task using [self myMethod] and modifying members variables assuming I'm the only thread accessing it ? This way of handling threads seems weird to me, sorry if my question is stupid ^^ Thanks in advance

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  • Accessing functions in a parent controller

    - by meridimus
    I have made a ViewController in XCode for an iPhone project I'm working on, but I have a question about nested ViewControllers and what the best way to access a parents ViewController functions? Essentially, at the moment I have a SwitchViewController with MenuViewController (nested) and GameViewController (nested, which renders OpenGL ES). At the moment, I have animated view switching controlled in the SwitchViewController which works. But I want to call it after a player has selected the level from the MenuViewController and run the appropriate level in GameViewController. Not rocket science, I know. What's the best way to call parent functions?

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