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  • Google App Engine with Java - Error running javac.exe compiler

    - by dta
    On Windows XP Just downloaed and unzipped google app engine java sdk to C:\Program Files\appengine-java-sdk I have jdk installed in C:\Program Files\Java\jdk1.6.0_20. I ran the sample application by appengine-java-sdk\bin\dev_appserver.cmd appengine-java-sdk\demos\guestbook\war Then I visited localhost:8080 to find : HTTP ERROR 500 Problem accessing /. Reason: Error running javac.exe compiler Caused by: Error running javac.exe compiler at org.apache.tools.ant.taskdefs.compilers.DefaultCompilerAdapter.executeExternalCompile(DefaultCompilerAdapter.java:473) How to Fix it? My JAVA_HOME points to C:\Program Files\Java\jdk1.6.0_20. I also tried chaning my appcfg.cmd to : @"C:\Program Files\Java\jdk1.6.0_20\bin\java" -cp "%~dp0..\lib\appengine-tools-api.jar" com.google.appengine.tools.admin.AppCfg %* It too didn't work.

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  • SQLite Step Failed: attempt to write a readonly database , using wrapper

    - by user271753
    I keep getting an error "SQLite Step Failed: attempt to write a readonly database" when using this code to copy a database: -(void)createEditableCopyOfDatabaseIfNeeded { // Testing for existence BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; NSError *error; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:@"Money.sqlite"]; success = [fileManager fileExistsAtPath:writableDBPath]; if (success) return; // The writable database does not exist, so copy the default to // the appropriate location. NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"Money.sqlite"]; success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error]; if(!success) { NSAssert1(0,@"Failed to create writable database file with Message : '%@'.", [error localizedDescription]); } } I am using the above code in AppDelegate and this: NSString *writableDBPath = [[NSBundle mainBundle] pathForResource:@"Money" ofType:@"sqlite"]; In ViewController.m I am using http://th30z.netsons.org/2008/11/objective-c-sqlite-wrapper/ what am I doing wrong? This is happening again and again... It was working fine before but again the problem started.

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  • Sorting a multidimensional array in objective-c

    - by Zen_silence
    Hello, I'm trying to sort a multidimensional array in objective-c i know that i can sort a single dimensional array using the line of code below: NSArray *sortedArray = [someArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]; I can't seem to figure out how to sort a 2D array like the one below: ( ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY"), ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY"), ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY") ); If someone could provide me code that would sort the array by SOME_CATEGORY it would be of great help to me. Thanks, Zen_Silence

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  • Why is setting queue in a MPMusicPlayerController only adding first track in collection?

    - by prendio2
    I have an Album object containing a MPMediaItemCollection of the album's tracks. When I add this collecton to the queue with the following line of code, only the first track gets added. [iPodMusicPlayer setQueueWithItemCollection:album.mediaItems]; Oddly enough when I add with the following line of code, everything works as expected. [iPodMusicPlayer setQueueWithItemCollection:[MPMediaItemCollection collectionWithItems:[album.mediaItems items]]]; Why would the second line work but not the first?

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  • Resizing an image with stretchableImageWithLeftCapWidth

    - by Stephan Burlot
    I'm trying to resize an image using stretchableImageWithLeftCapWidth: it works on the simulator, but on the device, vertical green bars appears. I've tried to use imageNamed, imageWithContentOfFile and imageWithData lo load the image, it doesnt change. UIImage *bottomImage = [[UIImage imageWithData: [NSData dataWithContentsOfFile: [NSString stringWithFormat:@"%@/bottom_part.png", [[NSBundle mainBundle] resourcePath]]]] stretchableImageWithLeftCapWidth:27 topCapHeight:9]; UIImageView *bottomView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 200+73, 100, 73)]; [self.view addSubview:bottomView]; UIGraphicsBeginImageContext(CGSizeMake(100, 73)); [bottomImage drawInRect:CGRectMake(0, 0, 100, 73)]; UIImage *bottomResizedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); bottomView.image = bottomResizedImage; See the result: the green bars shouldn't be there, they dont appear on the simulator.

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  • How to change the border color of a Grouped UITableView

    - by ctpenrose
    This concerns iPhoneOS-sdk-3.2 I am having difficulty changing the border color of a grouped UITableView. I can change the cell background color, separator color, text color, quite easily now, and the rounded corners clip correctly, even when highlighted with whatever colors I have chosen. However the surrounding border remains infuriatingly gray despite many different attempts. I have read all of the related posts I can find via Google, let alone stackoverflow. I have tried both a programmatic and xib-based solution and both provide the same results. I will share the programmatic version below: I have a UIViewController subclass rather than a UITableViewController subclass to act as a UITableView delegate -- I chose this route as I am coding on the iPad and UITableViewController reportedly takes over the whole screen. loadView method of my UIViewController subclass: - (void) loadView { self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; [self.view release]; self.view.backgroundColor = [UIColor blackColor]; // add and configure UITableView CGRect tableViewRect = CGRectMake(0., 0., 256., 768.); myTableView = [[UITableView alloc] initWithFrame:tableViewRect style:UITableViewStyleGrouped]; // set the tableview delegate to this object and the datasource to the datasource which has already been set myTableView.delegate = self; myTableView.dataSource = self; myTableView.sectionIndexMinimumDisplayRowCount=1; myTableView.backgroundColor = [UIColor clearColor]; myTableView.separatorColor = [UIColor whiteColor]; myTableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine; myTableView.opaque = NO; // add the table view to our background view [self.view addSubview:myTableView]; [myTableView release]; }

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  • MPMoviePlayerController on large videos causes massive memory spike, and a level 1 memory warning

    - by Shizam
    When viewing images my application hums along nicely with low memory consumption, once I try to watch a video using MPMoviePlayerController memory usage spikes way up, dwarfing the previous memory graph and if I play the video it causes a 'memory warning. Level=1' message. The video files (mp4) aren't even that big, 40MB or so, and it doesn't matter if I play the file streamed from a URL or loaded from a local file, actually the memory spike is even worse if I try to stream it. Here is the code I use to create the player: if (_photo.videoPath != nil) { _movieViewController=[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:_photo.videoPath]]; } else { _movieViewController=[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:_photo.videoURL]]; } [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoMetaListener:) name:MPMovieDurationAvailableNotification object:_movieViewController.moviePlayer]; _movieViewController.moviePlayer.scalingMode=MPMovieScalingModeAspectFit; _movieViewController.moviePlayer.shouldAutoplay = YES; _movieViewController.moviePlayer.controlStyle = MPMovieControlStyleEmbedded; Anybody else running into issues playing video? Also I checked for leaks, there are none reported.

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  • UITextView autoscroll to last line

    - by MihaiD
    Hi *, When writing in a UITextView more text than can fit entirely inside it, the text will scroll up and the cursor will often place itself one or two lines above the view's bottom line. This is a bit frustrating as I want my application to make good use of the entire height of the text view. Basically what I want is to configure the UITextView to write up to it's lowest part and not use it just for scrolling. I've seen some similar questions here, here and here. However I've not seen a proper solution yet. Thanks

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  • Initial selected Item in an UITabBar without a UITabBarController

    - by juan.xavier
    Hello, How do I set the default selected UITabBarItem in an UITabBar that is within an UIView, not an UITabBarController? Just to clarify, the UIView does implement the protocol and the didSelectItem method works. At run-time, the tabbar works and the tabbaritems selected when the user touches them. My problem is setting the default selected item. If i use [myTabbar setSelectedItem] within the didSelectItem method it works. But outside of it, it doesn't (for example, in the viewDidLoad method of my UIView). Thanks!

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  • How do I zoom an MKMapView to the users current location without CLLocationManager?

    - by Danny Tuppeny
    With the MKMapView there's an option called "Show users current location" which will automatically show a users location on the map. I'd like to zoom into this location without adding a CLLocationManager (this seems silly if the map is already taking care of this). The problem is, I can't find a nice event that fires when the map has figured out the users location, so I don't know where to put the code that will zoom/scroll. I tried using the viewForAnnotation method like this: - (MKAnnotationView *) mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation { if ([annotation class] == [MKUserLocation class] ) { NSLog(@"UserLocation annotation"); return [map viewForAnnotation:annotation]; } return nil; } However it doesn't fire if the users location is off the screen. Is there a way to be notified when an MKMapView has got the user location so I can zoom in to it, or do I just have to add a CLLocationManager for this?

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  • how to draw a NSString in drawrect of UIView?

    - by senthilmuthu
    hi, the Newline character is not working in draw rect of UIView? can anyone help? - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); UIFont * f = [UIFont systemFontOfSize:20]; [[UIColor darkGrayColor] set]; CGRect b = [self bounds]; NSString * text = @"hi \nr u"; CGSize sz = CGSizeMake(150,200); CGContextScaleCTM(context, b.size.width/sz.width, b.size.height/sz.height); [text drawAtPoint:CGPointMake(0,0) withFont:f]; }

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  • XCode iPhone Programming: Loading a jpg into a UIImageView from URL

    - by Antonio Murgia
    My app has to load an image from a http server and displaying it into an UIImageView How can i do that?? I tried this: NSString *temp = [NSString alloc]; [temp stringwithString:@"http://192.168.1.2x0/pic/LC.jpg"] temp=[(NSString *)CFURLCreateStringByAddingPercentEscapes( nil, (CFStringRef)temp, NULL, NULL, kCFStringEncodingUTF8) autorelease]; NSData *dato = [NSData alloc]; dato=[NSData dataWithContentsOfURL:[NSURL URLWithString:temp]]; pic = [pic initWithImage:[UIImage imageWithData:dato]]; This code is in viewdidload of the view but nothing is displayed! The server is working because i can load xml files from it. but i can't display that image! I need to load the image programmatically because it has to change depending on the parameter passed! Thank you in advance. Antonio

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  • App.config connection string Protection error

    - by MikeScott8
    I am running into an issue I had before; can't find my reference on how to solve it. Here is the issue. We encrypt the connection strings section in the app.config for our client application using code below: config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None) If config.ConnectionStrings.SectionInformation.IsProtected = False Then config.ConnectionStrings.SectionInformation.ProtectSection(Nothing) ' We must save the changes to the configuration file.' config.Save(ConfigurationSaveMode.Modified, True) End If The issue is we had a salesperson leave. The old laptop is going to a new salesperson and under the new user's login, when it tries to to do this we get an error. The error is: Unhandled Exception: System.Configuration.ConfigurationErrorsException: An error occurred executing the configuration section handler for connectionStrings. ---> System.Configuration.ConfigurationErrorsException: Failed to encrypt the section 'connectionStrings' using provider 'RsaProtectedConfigurationProvider'. Error message from the provider: Object already exists. ---> System.Security.Cryptography.CryptographicException: Object already exists

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  • How to follow user location with MapKit

    - by Bloudermilk
    I'm using MapKit to display the user's location relative to pins around them. I'd like to be able to mimic the functionality that Maps provides via the crosshair button in the lower left-hand corner of the screen. I'm already aware that MapKit provides a CLLocation object with the user's location via MKUserLocation, I just wanted to seek advice on how I should keep focus on that location. My initial inclination was to use an NSTimer to center the map on that coordinate every 500ms or so. Is there a better way to do this? Is there something built in to MapKit that I'm missing that will accomplish this? Thanks so much, Brendan

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  • Unable to hide TabBar on sub view in iphone

    - by iPhoneDev
    Hello Everyone, My app flow requires Navigation and TabBar controller. So I decided to use TabBar template. Since my first page is login which do not require TabBar, I used presentModelViewController to show Login screen which have Navigation bar if user Navigate to Forgot password. LoginView *rootView = [[[LoginView alloc] init] autorelease]; navigationController= [[[UINavigationController alloc] initWithRootViewController:rootView] autorelease]; [tabBarController presentModalViewController:navigationController animated:FALSE]; Ones the user login I dismiss view controller and show TabBar with 5 Tab and Each Tab contain TabaleView. User select any row and navigate to sub view. The issue is, on sub view I dont need tab bar. (TabBar is needed ONLY on dashboard). If I hide tabBar a white space remain there. Is there any workaround to solve this issue? Please find the screen shot Firt Screen ( presentModelViewController): Second Screen: Issue on sub view:

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  • how to display image in MFMailComposer?

    - by Rahul Vyas
    Hello all i want to display an image in mfmailcomposer it shows when i add it to attachment but not at the exact place where i want to show it how do i show image in mfmailcomposer. also does someone knows how to launch safari when click on a url in mfmailcomposer?

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  • CATiledLayer: Determining levelsOfDetail when in drawLayer

    - by Russell Quinn
    I have a CATiledLayer inside a UIScrollView and all is working fine. Now I want to add support for showing different tiles for three levels of zooming. I have set levelsOfDetail to 3 and my tile size is 300 x 300. This means I need to provide three sets of tiles (I'm supplying PNGs) to cover: 300 x 300, 600 x 600 and 1200 x 1200. My problem is that inside "(void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx" I cannot work out which levelOfDetail is currently being drawn. I can retrieve the bounds currently required by using CGContextGetClipBoundingBox and usually this requests a rect for one of the above sizes, but at layer edges the tiles are usually smaller and therefore this isn't a good method. Basically, if I have set levelsOfDetail to 3, how do I find out if drawLayer is requesting level 1, 2 or 3 when it's called? Thanks, Russell.

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  • Access UIButton's titleLabel with custom background image

    - by Meltemi
    Quick one: I have a custom button image that I want to use but I still want to change the text of the button with setTitle:forState:. When I use a "custom" button in IB I lose the Title view. When I use Rounded Rect in IB the custom image appears scrunched w/in the Rounded Rect button. Why is this so difficult?

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  • CGContextDrawPDFPage taking up large amounts of memory

    - by Ed Marty
    I have a PDF file that I want to draw in outline form. I want to draw the first several pages on the document each in their own UIImage to use on a button so that when clicked, the main display will navigate to the clicked page. However, CGContextDrawPDFPage seems to be using copious amounts of memory when attempting to draw the page. Even though the image is only supposed to be around 100px tall, the application crashes while drawing one page in particular, which according to Instruments, allocates about 13 MB of memory just for the one page. Here's the code for drawing: //Note: This is always called in a background thread, but the autorelease pool is setup elsewhere + (void) drawPage:(CGPDFPageRef)m_page inRect:(CGRect)rect inContext:(CGContextRef) g { CGPDFBox box = kCGPDFMediaBox; CGAffineTransform t = CGPDFPageGetDrawingTransform(m_page, box, rect, 0,YES); CGRect pageRect = CGPDFPageGetBoxRect(m_page, box); //Start the drawing CGContextSaveGState(g); //Clip to our bounding box CGContextClipToRect(g, pageRect); //Now we have to flip the origin to top-left instead of bottom left //First: flip y-axix CGContextScaleCTM(g, 1, -1); //Second: move origin CGContextTranslateCTM(g, 0, -rect.size.height); //Now apply the transform to draw the page within the rect CGContextConcatCTM(g, t); //Finally, draw the page //The important bit. Commenting out the following line "fixes" the crashing issue. CGContextDrawPDFPage(g, m_page); CGContextRestoreGState(g); } Is there a better way to draw this image that doesn't take up huge amounts of memory?

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