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  • Using core plot for iPhone, drawing date on x axis

    - by xmax
    I have available an array of dictionary that contains NSDate and NSNumber values. I wanted to plot date on X axis. for plotting I need to supply xRanges to plot with some decimal values.I don't understand how can i supply NSdate values to xRange (low and length). And what should be there in this method: -(NSNumber *)numberForPlot:(CPPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index I mean how my date value will be returned as NSNumber..? I think i should use some interval over there.but what should be the exact conversion..? can any one explain me what are the exact requirement to plot the date on xAxis..? I am plotting my plot in half of the view.

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  • iphone EXC_BAD_ACCESS

    - by Dave
    I seem to get an EXC_BAD_ACCESS error when I select a cell in my table view that takes me to a 2nd table view with a lot of these http://pastie.org/906711 could they be the problem if I have 8 of them ? Heres the backtrace : http://pastie.org/906729 Thanks for your time,

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  • Using CGContext to display a sprite sheet iPhone

    - by Mike
    Hello, So I have a spritesheet in png format, and have already worked out the coordinates for what I want to display. I'm trying to create a method that will return a UIImage when passed the location information on the spritesheet. I'm just not sure how to use the CGContext stuff along with the the coordinates to return an UIImage. I was looking to CGContextClipToRect because I think that is the way to do it, but I just can't seem to get it to work. Something like this CGSize size = CGSizeMake(xSize, ySize); UIGraphicsBeginImageContext(size); //CGContextClipToRect(spriteSheet.size, imageRect); [spriteSheet drawAtPoint:CGPointMake(xPos, yPos)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return scaledImage; returns only what is in the size Context. I need to be able to "move" this size window around the spritesheet if that makes sense. Any help would be appreciated. Thanks, Mike

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  • MGTwitterEngine - Using getImageAtURL on iPhone

    - by Andrew Malchow
    Essentially, I'm working on asynchronously downloading images and adding them to specific UITableView cells (twitter profile images using MGTwitterEngine from Matt Gemmell). I've looked at general asynchronous download code and must admit, I'm still too much of a noob to understand it well enough to adapt it to my purposes. Instead, I'm attempting to use Gemmell's included getImageAtUrl method to add the images. I have it working to the point that -imageReceived: receives the images for visible cells, however, I'm stuck as to how to include them into the appropriate cells at that point. - (void)imageReceived:(UIImage *)image forRequest:(NSString *)identifier { NSLog(@"Got an image:%@",image); // What goes here? Or elsewhere? } This method is within my main view controller, I also have a custom cell controller where I'm drawing the cell content using Loren Brichter's fast scrolling code. Any help with this MGTwitterEngine method in particular, or with dynamically adding these images to my table cells would be greatly appreciated.

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  • system settings for iphone

    - by Viral
    hi friends, I m making alarm application, for that I need to access some system settings like System time format (24 hrs or 12 hrs), System Volume settings And make system Auto lock after some time intervals. I don't know how to implement such settings using code, if any one know about this please let me know. thank you in advance.

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  • Change iPhone UISlider bar image.

    - by Fogmeister
    Hi everyone! My first question on stackoverflow! I'm using a UISlider in my app but I'd like to use a custom "look-and-feel" for it. I have changed the thumb to my own image but is there a way to change the bar also? I have a bar image I would like to use but can't see how to do this. I have found how to change the max and min image but not the bar itself. Thanks Oliver

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  • iPhone link to map directions using string "current location" not lat and lng for saddr

    - by Nick
    I know there are numerous questions about how to construct a sharedApplication link to the maps app specifying the start and end address with coordinates. I've got that working no problem. Has anyone found a way to link with a source address generically specified as "current location". I ask because the scenario I'm working on having Core Location or a UIMapView would only be necessary in order to determine the user location prior to handing off to the map app where the user locating would seem to just happen again. I've tried throwing UTF8'd "Current Location" and "[Current Location]" into the saddr parameter which amusingly starts from Current Montana. I've also tried simply excluding the saddr param. I know this is often tread territory but this particular situation wasn't covered by anything I found searching here or on mapki. Before I add the core location code I just wanted to make sure there wasn't a more limited way to tackle this. Thanks

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  • iPhone Development - Query related records using CoreData

    - by Mustafa
    I have a case where i have three entities with one-to-many and one-to-many relationships: Entity A (Entity B relationhip), Entity B (Entity A relationship, Entity C relationship), Entity C (Entity B relationhip) I have the reference of Entity A, and now i want to fetch all the related Entity C records. How can i do that? (with least amount of code) Edit: Here's another way to put it. Can we perform joins with CoreData. For example, (and this is a very crude example), We have a following entity-relationship: Grand Parent (1)---(m) Parent Parent (1)---(m) Child So, now if i have "Albert" the Grand Parent, and i want to get all his grand children, how can i do that?

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  • There is no attachment in the sent mail by iPhone

    - by naruhodo
    I'm trying to send a recorded sound file as attachment with MFMailComposeViewController. The sound file is OK. The picker shows the correct file name, shows the audio file icon as attachment, sends the mail, but there is no attachment in the result. I attached below the source of the sent mail. There is a "text/plain" content type part instead of "Content-Disposition: attachment;" as expected. This is my code code to define the path and attach the audio file. What could be wrong? #define DOCUMENTS_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] #define FILEPATH [DOCUMENTS_FOLDER stringByAppendingPathComponent:[self dateString]] ... NSURL *url = [NSURL fileURLWithPath:FILEPATH]; self.recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error]; ... MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; NSURL *url = [NSURL fileURLWithPath: [NSString stringWithFormat:@"%@", [self.recorder url]]]; NSData *audioData = [NSData dataWithContentsOfFile:[url path]]; [picker addAttachmentData:audioData mimeType:@"audio/wav" fileName:[[url path] lastPathComponent]]; and the source of the sent mail: Content-type: multipart/mixed; boundary=Apple-Mail-1-614960740 Content-transfer-encoding: 7bit MIME-version: 1.0 (iPod Mail 7E18) Subject: Sound message: Date: Sun, 11 Apr 2010 11:58:56 +0200 X-Mailer: iPod Mail (7E18) --Apple-Mail-1-614960740 Content-Type: text/plain;     charset=us-ascii;     format=flowed Content-Transfer-Encoding: 7bit It is a text here --Apple-Mail-1-614960740 Content-Type: text/plain;     charset=us-ascii;     format=flowed Content-Transfer-Encoding: 7bit Sent from my iPod --Apple-Mail-1-614960740--

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  • IPhone OS 4.0 - Beta 3 - setContentURL on MPMoviePlayerViewController crashing the App

    - by Thom
    Hi Everyone. I had this issue, with the beta2 and I thought the beta3 was going to solve it, but I'm starting to think that I'm doing something wrong. I have a MPMoviePlayerViewController playing a video and when the video ends I'm trying to change the video for another like this: [moviePlayerViewController.moviePlayer setContentURL:newVideoURL]; The app crashes when it reaches this point. Any help/advice welcome :) Thanks Thomas

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  • iPhone SDK: loading UITableView from SQLite

    - by leon
    Hi, I think I got a good handle on UITableViews and on getting/inserting data from/to SQLite db. I am straggling with an architectural question. My application saves 3 values int the database, there can be many/many rows. However would I load them in the table? From all the tutorials I have seen, at one point entire database is loaded in the NSMutableArray or similar object via performing SELECT statement. Then when -(UITableViewCell *) tableView: (UITableView *) tableView cellForRowAtIndexPath: (NSIndexPath *) indexPath called, rows required are dolled out from the previous loaded NSMutableArray (or similar stracture). But what i have have thousands for rows? Why would I pre-load them? Should I just query database each time cellForRowAtIndexPath is called? If so, what would I use as an index? Each row in the table will have an AUTOINCREMENT index, but since some rows may be deleted index will not correspond to rows in the table (in the SQL I may have something like this with row with index 3 missing): 1 Data1 Data1 2 Data2 Data2 4. data3 data3 Thanks

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  • iPhone - Using javascritp to increase font of web view

    - by satyam
    i've a webview in my app. It has + and - buttons to increase and decrease the font. When I start the view, the text occupies whole 320 pixels width. I'm following the way mentioned in "http://stackoverflow.com/questions/589177/how-to-increase-font-size-in-uiwebview" I'm seeing the increase and decrease of font. But once the font size increases, text is not occupying full view. It won't occupy whole 320 pixels width. As and when text size increases, the width of final text in web view decreases slowly. Why? How to avoid it?

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  • iPhone: value of selectedIndex for tab should be consistent, but isn't

    - by Janine
    This should be so simple... but something screwy is happening. My setup looks like this: MainViewController Tab Bar Controller 4 tabs, each of which loads WebViewController My AppDelegate contains an ivar, tabBarController, which is connected to the tab bar controller (this was all set up in Interface Builder). The leftmost tab is marked "selected" in IB. Within the viewWillAppear method in WebViewController, I need to know which tab was just selected so I can load the correct URL. I do this by switching on appDelegate.tabBarController.selectedIndex. When the app first runs and the leftmost tab is selected, selectedIndex is a large garbage value. After that, I get values from 0 to 3, which is as it should be, but they are in random order. Not only that, but each tab I touch reports a different value each time. This app is extremely simple right now and I can't imagine what I could have done to make things go this wrong. Has anyone seen (and hopefully solved) this behavior? Update: we have a request for code. There's not much to see. The tab bar controller gets loaded in applicationDidFinishLaunching: [self.mainViewController view]; //force nib to load [self.window addSubview:self.mainViewController.tabBarController.view] There is currently no code whatsoever in MainViewController.m other than the synthesize and release for tabBarController. From WebVewController.m: - (void)viewWillAppear:(BOOL)_animation { [super viewWillAppear:_animation]; NSURL *url; switch([S_UIDelegate mainViewController].tabBarController.selectedIndex) { case 0: url = [NSURL URLWithString:@"http://www.cnn.com"]; break; case 1: url = [NSURL URLWithString:@"http://www.facebook.com"]; break; case 2: url = [NSURL URLWithString:@"http://www.twitter.com"]; break; case 3: url = [NSURL URLWithString:@"http://www.google.com"]; break; default: url = [NSURL URLWithString:@"http://www.msnbc.com"]; } NSURLRequest *request = [NSURLRequest requestWithURL:url]; [webView loadRequest:request]; } This is where I'm seeing the random values.

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  • Crashes when using AVAudioPlayer on iPhone

    - by mindthief
    Hi all, I am trying to use AVAudioPlayer to play some sounds in quick succession. When I invoke the sound-playing function less frequently so that the sounds play fully before the function is invoked again, the application runs fine. But if I invoke the function quickly in rapid succession (so that sounds are played while the previous sounds are still being played), the app eventually crashes after ~20 calls to the function, with the message "EXC_BAD_ACCESS". Here is code from the function: NSString *nsWavPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:wavFileName]; AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:nsWavPath] error:NULL]; theAudio.delegate = self; [theAudio play]; As mentioned in another thread, I implemented the following delegate function: - (void) audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag { if(!flag) NSLog(@"audio did NOT finish successfully\n"); [player release]; } But the app still crashes after around ~20 rapid calls to the function. Any idea what I'm doing wrong?

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  • Implementing Unit Testing with the iPhone SDK

    - by ing0
    Hi, So I've followed this tutorial to setup unit testing on my app when I got a little stuck. At bullet point 8 in that tutorial it shows this image, which is what I should be expecting when I build: However this isn't what I get when I build. I get this error message: Command /bin/sh failed with exit code 1 as well as the error message the unit test has created. Then, when I expand on the first error I get this: PhaseScriptExecution "Run Script" "build/3D Pool.build/Debug-iphonesimulator/LogicTests.build/Script-1A6BA6AE10F28F40008AC2A8.sh" cd "/Users/james/Desktop/FYP/3D Pool" setenv ACTION build setenv ALTERNATE_GROUP staff ... setenv XCODE_VERSION_MAJOR 0300 setenv XCODE_VERSION_MINOR 0320 setenv YACC /Developer/usr/bin/yacc /bin/sh -c "\"/Users/james/Desktop/FYP/3D Pool/build/3D Pool.build/Debug-iphonesimulator/LogicTests.build/Script-1A6BA6AE10F28F40008AC2A8.sh\"" /Developer/Tools/RunPlatformUnitTests.include:412: note: Started tests for architectures 'i386' /Developer/Tools/RunPlatformUnitTests.include:419: note: Running tests for architecture 'i386' (GC OFF) objc[12589]: GC: forcing GC OFF because OBJC_DISABLE_GC is set Test Suite '/Users/james/Desktop/FYP/3D Pool/build/Debug-iphonesimulator/LogicTests.octest(Tests)' started at 2010-01-04 21:05:06 +0000 Test Suite 'LogicTests' started at 2010-01-04 21:05:06 +0000 Test Case '-[LogicTests testFail]' started. /Users/james/Desktop/FYP/3D Pool/LogicTests.m:17: error: -[LogicTests testFail] : Must fail to succeed. Test Case '-[LogicTests testFail]' failed (0.000 seconds). Test Suite 'LogicTests' finished at 2010-01-04 21:05:06 +0000. Executed 1 test, with 1 failure (0 unexpected) in 0.000 (0.000) seconds Test Suite '/Users/james/Desktop/FYP/3D Pool/build/Debug-iphonesimulator/LogicTests.octest(Tests)' finished at 2010-01-04 21:05:06 +0000. Executed 1 test, with 1 failure (0 unexpected) in 0.000 (0.002) seconds /Developer/Tools/RunPlatformUnitTests.include:448: error: Failed tests for architecture 'i386' (GC OFF) /Developer/Tools/RunPlatformUnitTests.include:462: note: Completed tests for architectures 'i386' Command /bin/sh failed with exit code 1 Now this is very odd as it is running the tests (and succeeding as you can see my STFail firing) because if I add a different test which passes I get no errors, so the tests are working fine. But why am I getting this extra build fail? It may also be of note that when downloading solutions/templates which should work out the box, I get the same error. I'm guessing I've set something up wrong here but I've just followed a tutorial 100% correctly!! If anyone could help I'd be very grateful! Thanks EDIT: According to this blog, this post and a few other websites, I'm not the only one getting this problem. It has been like this since the release of xCode 3.2, assuming the apple dev center documents and tutorials etc are pre-3.2 as well. However some say its a known issue whereas others seem to think this was intentional. I for one would like both the extended console and in code messages, and I certainly do not like the "Command /bin/sh..." error and really think they would have documented such an update. Hopefully it will be fixed soon anyway. UPDATE: Here's confirmation it's something changed since the release of xCode 3.2.1. This image: is from my test build using 3.2.1. This one is from an older version (3.1.4): . (The project for both was unchanged). Edit: Image URLS updated.

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  • Dialing a command prefix on the iPhone

    - by tewha
    Our application lets users call phone numbers. Users would like to be able to block their caller ID. On other platforms, we let the user specify a custom dialing prefix. For instance, on my cell provider it's #31#. I've tried two approaches so far. First: id url = [NSURL URLWithString: @"tel:#31#0000000"] // produces nil Second: id encoder = ["#31#0000000" stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]; // produces %2331%230000000 id url = [NSURL URLWithString: [NSString stringWithFormat: @"tel:%@", encoded]]; // produces a valid-looking NSURL which doesn't do anything I'm thinking at this point that I'm just not allowed to dial # and *, even from a Cocoa touch application. (I know it's not allowed from a web app.) Is this true, or am I missing something obvious?

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  • iPhone MKMapView force callout bubble

    - by Mark
    Is it possible to force the call out bubble to be open all the time? I tried putting the following code in didAddAnnotionViews: for (id<MKAnnotation> currentAnnotation in mapView.annotations) { [mapView selectAnnotation:currentAnnotation animated:NO]; } Which works, however, when I single tap the MKMapView the bubble disappear. I want to avoid this behavior.

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  • Protecting Data Feed for iPhone App

    - by Chris
    I am creating an App that pulls data from a file on my server. That file gets data from my database, based on GET values that are passed through the URL. I would like to keep this feed closed - that is, I don't want people finding the datasource and reading the data on their own. I considered sending an alphanumeric id along with the url string, but if they can find the URL that I am calling, then there won't be anything preventing them from grabbing that alphanumeric id also. I am looking for any ideas or experiences that might help me here. Thanks.

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