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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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  • 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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  • UIWebView selection

    - by Infinity
    Hello guys! I subclassed the UIWindow to get the clicks from UIWebView. I used a tutorial for this. Here is the link: Tutorial It is working, but after I've got and other tutorial from the writer where he shows how to highlight the text in UIWebView. Here's the second link. But I can't use this second one. I tried to run this code in the - (void)userDidTapWebView:(id)tapPoint; delegate method. This delegate method is called when I tap in the UIWebView. Maybe somebody can help me to correct the script? I would like to get the tapped anchor's link. I tried many different java script, but until now I couldn't get the tapped anchor's link. One of the tries is when I tried to add a function to document.onClick. But I tap an anchor then it needs a second tap to get the anchor and I can't get the link neither with this method.

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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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  • Compile Error Using singleton - iPhone SDK

    - by mrburns05
    Since someone here is a bit hot-headed and deleted my last question ill post a new one with a title to better please his ego...Hows this Michael? Anyways, im getting this error when i compile: Undefined symbols: "_OBJC_CLASS_$_SortedItems", referenced from: __objc_classrefs__DATA@0 in SortedByNameTableDataSource.o ld: symbol(s) not found collect2: ld returned 1 exit status Basically i followed apples "TheElements" sample app to create the singleton, tableview datasource and just changed some stuff around to suit my needs - ive triple checked all my code and cannot figure out why im getting this.. If anyone can help please do, it would be much appreciated. if more of my code is needed ill post.. let me know

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  • NSDateFormatter

    - by srushti
    my code is like this NSString *tempDate = [NSString stringWithString:tempReviewData.pubDate]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateStyle:NSDateFormatterLongStyle]; [dateFormatter setTimeStyle:NSDateFormatterNoStyle]; [dateFormatter setDateFormat:@"HH:mm a"]; NSDate *newDate = [dateFormatter dateFromString:tempReviewData.pubDate]; My newDate is getting nil at this point i dont know why

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  • AVAudioPlayer not unloading cached memory after each new allocation

    - by Rob
    I am seeing in Instruments that when I play a sound via the standard "AddMusic" example method that Apple provides, it allocates 32kb of memory via the prepareToPlay call (which references the AudioToolBox framework's Cache_DataSource::ReadBytes function) each time a new player is allocated (i.e. each time a different sound is played). However, that cached data never gets released. This obviously poses a huge problem if it doesn't get released and you have a lot of sound files to play, since it tends to keep allocating memory and eventually crashes if you have enough unique sound files (which I unfortunately do). Have any of you run across this or what am I doing wrong in my code? I've had this issue for a while now and it's really bugging me since my code is verbatim of what Apple's is (I think). How I call the function: - (void)playOnce:(NSString *)aSound { // Gets the file system path to the sound to play. NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:aSound ofType:@"caf"]; // Converts the sound's file path to an NSURL object NSURL *soundURL = [[NSURL alloc] initFileURLWithPath: soundFilePath]; self.soundFileURL = soundURL; [soundURL release]; AVAudioPlayer * newAudio=[[AVAudioPlayer alloc] initWithContentsOfURL: soundFileURL error:nil]; self.theAudio = newAudio; // automatically retain audio and dealloc old file if new m4a file is loaded [newAudio release]; // release the audio safely // this is where the prior cached data never gets released [theAudio prepareToPlay]; // set it up and play [theAudio setNumberOfLoops:0]; [theAudio setVolume: volumeLevel]; [theAudio setDelegate: self]; [theAudio play]; } and then theAudio gets released in the dealloc method of course.

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  • View hide problem

    - by Ajeet Kumar Yadav
    Hello, I am using a Xib (tab bar controller with navigation bar). when i use navigation bar in app delegate then Xib slides little bit bellow.Actually i want a navigation bar on enter page so it is compulsory to define navigation bar in app delegate. Please help me how i solve this problem.

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  • How to get the current eventNumber for creating an event with NSEvent

    - by Chris
    Hello I'm creating an os x application for which I try to add a remote interface. For this I need to be able to send mouse down and mouse up commands to the window of my application. I found code with which I can successfully do this, it looks as follows: int mask = 0x100; NSEvent* eventMouseDown = [NSEvent mouseEventWithType:NSLeftMouseDown location:p modifierFlags:mask timestamp:[NSDate timeIntervalSinceSystemStartup] windowNumber:[w windowNumber] context:[NSGraphicsContext graphicsContextWithWindow:w] eventNumber:++eventCounter +42599 clickCount:1 pressure:0]; NSLog(@"Mouse down event: %@", eventMouseDown); [[NSApplication sharedApplication] sendEvent:eventMouseDown]; I have only one problem with this code thought and this is the eventNumer parameter. As far as I found out it is a number which get increased with each event. But I cannot find a way to find the current number from where on I need to increase. The number I use there currently is just try and error and also does not seam to work always.

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  • Getting "Location" header from NSHTTPURLResponse

    - by aspcartman
    Can't get "Location" header from response at all. Wireshark says that i've got one: Location: http://*/index.html#0;sid=865a84f0212a3a35d8e9d5f68398e535 But NSHTTPURLResponse *hr = (NSHTTPURLResponse*)response; NSDictionary *dict = [hr allHeaderFields]; NSLog(@"HEADERS : %@",[dict description]); Produces this: HEADERS : { Connection = "keep-alive"; "Content-Encoding" = gzip; "Content-Type" = "text/html"; Date = "Thu, 25 Mar 2010 08:12:08 GMT"; "Last-Modified" = "Sat, 29 Nov 2008 15:50:54 GMT"; Server = "nginx/0.7.59"; "Transfer-Encoding" = Identity; } No location anywhere. How to get it? I need this "sid" thing.

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  • Unable to retrieve data from SQLite database iOS6.0

    - by kunalg
    When i run build ios5.0 or less then Sqlite response correct and retrieve data its work fine but when run on ios6.0 i am trying to fetch data from my.sqlite database but it is not executing my if case. It always enters in else condition. What wrong thing i am doing? I am not able to execute my if case i.e. if(sqlite3_prepare_v2(database, sqlQuerry, -1, &querryStatement, NULL)==SQLITE_OK). for reference check this code . NSLog(@"sqlite3_prepare_v2 = %d SQLITE_OK %d ",sqlite3_prepare_v2(sqlite, [strQuery UTF8String], -1, &compiledStatement, nil),SQLITE_OK); if(sqlite3_prepare_v2(sqlite, [strQuery UTF8String], -1, &compiledStatement, nil)==SQLITE_OK) { NSLog(@"sqlite3_step = %d SQLITE_ROW %d ",sqlite3_step(compiledStatement),SQLITE_ROW); while (sqlite3_step(compiledStatement)==SQLITE_ROW) { if(sqlite3_column_text(compiledStatement, 2) != nil) modelObj.Name = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; } } else { } ////////// in ios6.0 log Print sqlite3_prepare_v2 = 1 SQLITE_OK 0 sqlite3_step = 21 SQLITE_ROW 100 in iOS5.0 log Print sqlite3_prepare_v2 = 0 SQLITE_OK 0 sqlite3_step = 100 SQLITE_ROW 100

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  • Override System Preference Pane?

    - by DisappointedIdealist
    Is there a way to override / disable a system preference pane? I'm wanting to put an application together that would disable or override the Energy Saver preference pane, and would put it's own rules in place for putting a machine into standby, turning off the monitor, or other various energy saving activities.

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  • How can I implement a volume meter for a song currently playing? (iPhone OS 3.1.3)

    - by Adam
    Hi i'm very new to core audio and I just would like some help in coding up a little volume meter for whatever's being outputted through headphones or built-in speaker. Like a dB meter. I have the following code, and have been trying to go through the apple source project "SpeakHere", but it's a nightmare trying to go through all that, without knowing how it works first... Could anyone shed some light? Here's the code I have so far... (void)displayWaveForm { while (musicIsPlaying == YES { NSLog(@"%f",sizeof(AudioQueueLevelMeterState)); } } (IBAction)playMusic { if (musicIsPlaying == NO) { NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/track7.wav",[[NSBundle mainBundle] resourcePath]]]; NSError *error; music = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; music.numberOfLoops = -1; music.volume = 0.5; [music play]; musicIsPlaying = YES; [self displayWaveForm]; } else { [music pause]; musicIsPlaying = NO; } }

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  • UIView Animation won't run transition

    - by dpelletier
    So, I've searched quite a bit for this and can't seem to find a solution. This code works: CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationDuration:5]; [c setCenter:CGPointMake(200, 200)]; [UIView commitAnimations]; This code doesn't: CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationBeginsFromCurrentState:YES]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:c cache:YES]; [UIView setAnimationDuration:5]; [c exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; [UIView commitAnimations]; And I know the call to exchangeSubViewAtIndex is working because if I remove it from the animation block it functions as expected. Anyone have any insight as to why this transition won't run? Something I need to import?

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  • Zooming image in a scroll view

    - by iSharreth
    I want to zoom an image in a scroll view. I used the below code. All are working fine, but the image is not zooming. Anyone please help. I am a beginner in iPhone app development. I had connected the delegate to files manager and set max zooming to 5 I can see the image. But how can I zoom it. IBOutlet UIScrollView *scrForImg; IBOutlet UIImageView *imgForScr; (void)viewDidLoad { [super viewDidLoad]; NSString *imagePath = [NSString stringWithFormat:@"myImage.png"]; imgForScr.image = [UIImage imageNamed:imagePath]; } -(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ return imgForScr; }

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  • Iphone: Problem with moving back and forth between two UIViewController

    - by Harry Pham
    Let me first describe the context of the problem. I have 2 UIViewController call AdminViewController and ButtonReorderViewController. AdminViewController contain 1 button. ButtonReorderViewController contains 1 button and 1 picture. Button in AdminViewController tie to an event call goToReorderButton. The content of goToReorderButton are below: ButtonReorderViewController *buttonReorder = [[ButtonReorderViewController alloc] initWithNibName:@"ButtonReorderViewController" bundle:[NSBundle mainBundle]]; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:buttonReorder]; //Add a Navigation Controller to the root view [navController setNavigationBarHidden:TRUE]; buttonReorder = (ButtonReorderViewController *) navController; [[buttonReorder view] setFrame:CGRectMake(0, -20, 320, 470)]; [self.view addSubview:buttonReorder.view]; I use UINavigationController to allow me to swipe left and right.So I am in AdminViewController, and I click on goToReorderButton, it load ButtonReorderViewController. I am able to swipe left and right (awesome !!!) So I click the button in ButtonReorderViewController call goToAdmin, simply to go back to the AdminViewController -(void) goToAdmin{ [self.view removeFromSuperview]; } However, as soon as I go back to AdminViewController, I cant click anything at all. The program does not seg fault, it just that I cant click the button at all. if I remove the line buttonReorder = (ButtonReorderViewController *) navController; inside goToReorderButton, then everything work fine. Any idea how to fix this?

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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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  • int vs NSNumber vs NSInteger

    - by Moshe
    I have a line of code that will work differently depending on the datatypes "day" and "1". I believe it is the following although I will check my source code later. day = day + 1; Does this make sense? What would the differences be?

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  • Getting RSSIValue from IOBluetoothHostController

    - by Tanner Ezell
    I'm trying to write a simple application that gathers the RSSIValue and displays it via NSLog, my code is as follows: #import <Foundation/Foundation.h> #import <Cocoa/Cocoa.h> #import <IOBluetooth/objc/IOBluetoothDeviceInquiry.h> #import <IOBluetooth/objc/IOBluetoothDevice.h> #import <IOBluetooth/objc/IOBluetoothHostController.h> #import <IOBluetooth/IOBluetoothUtilities.h> @interface getRSSI: NSObject {} -(void) readRSSIForDeviceComplete:(id)controller device:(IOBluetoothDevice*)device info:(BluetoothHCIRSSIInfo*)info error:(IOReturn)error; @end @implementation getRSSI - (void) readRSSIForDeviceComplete:(id)controller device:(IOBluetoothDevice*)device info:(BluetoothHCIRSSIInfo*)info error:(IOReturn)error { if (error != kIOReturnSuccess) { NSLog(@"readRSSIForDeviceComplete return error"); CFRunLoopStop(CFRunLoopGetCurrent()); } if (info->handle == kBluetoothConnectionHandleNone) { NSLog(@"readRSSIForDeviceComplete no handle"); CFRunLoopStop(CFRunLoopGetCurrent()); } NSLog(@"RSSI = %i dBm ", info->RSSIValue); [NSThread sleepUntilDate: [NSDate dateWithTimeIntervalSinceNow: 5]]; [device closeConnection]; [device openConnection]; [controller readRSSIForDevice:device]; } @end int main (int argc, const char * argv[]) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSLog(@"start"); IOBluetoothHostController *hci = [IOBluetoothHostController defaultController]; NSString *addrStr = @"xx:xx:xx:xx:xx:xx"; BluetoothDeviceAddress addr; IOBluetoothNSStringToDeviceAddress(addrStr, &addr); IOBluetoothDevice *device = [[IOBluetoothDevice alloc] init]; device = [IOBluetoothDevice withAddress:&addr]; [device retain]; [device openConnection]; getRSSI *rssi = [[getRSSI alloc] init]; [hci setDelegate:rssi]; [hci readRSSIForDevice:device]; CFRunLoopRun(); [hci release]; [rssi release]; [pool release]; return 0; } The problem I am facing is that the readRSSIForDeviceComplete seems to work just fine, info passes along a value. The problem is that the RSSI value is drastically different from the one I can view from OS X via option clicking the bluetooth icon at the top. It is typical for my application to print off 1,2,-1,-8,etc while the menu displays -64 dBm, -66, -70, -42, etc. I would really appreciate some guidance.

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  • Using a UITableViewController with a small-sized table?

    - by rpj
    When using a UITableViewController, the initWithStyle: method automatically creates the underlying UITableView with - according to the documentation - "the correct dimensions". My problem is that these "correct dimensions" seem 320x460 (the iPhone's screen size), but I'm pushing this TableView/Controller pair into a UINavigationController which is itself contained in a UIView, which itself is about half the height of the screen. No frame or bounds wrangling I can come up with seems to correctly reset the table's size, and as such it's "too long", meaning there are a collection of rows that are pushed off the bottom of the screen and are not visible nor reachable by scrolling. So my question comes down to: what is the proper way to tell a UITableViewController to resize its component UITableView to a specified rectangle? Thanks! Update I've tried all the techniques suggested here to no avail, but I did find one interesting thing: if I eschew the UINavigationController altogether (which I'm not yet willing to do for production, but as an experiment), and add the table view as a direct subview of the enclosing view I mentioned, the frame size given is respected. The very moment I re-introduce the UINavigationController into the mix, no matter if it is added as a subview before or after the table view, and no matter if alloc/init it before or after the table view is added as a subview, the result is the same as it was before. I'm beginning to suspect UINavigationController isn't much of a team player... Update 2 The suggestion to check frame size after the table view on screen was a good one: turns out that the navigation controller is in fact resizing it some time in between load and display. My solution, hacky at best, has been to cache the frame given on load and to reset it if changed at the beginning of tableView:cellForRowAtIndexPath:. Why there you ask? Because it's the one place I found that worked, that's why! I don't consider this a solution as it's obviously improper, but for the benefit of anyone else reading, it does seem to work.

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