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  • Error:Variable is not CFString

    - by Arun Sharma
    hi all, I am using sqlite database to save data from our xib. When I add first time then its added successfully but when i repeat that process then it shows run time exception and exit from program,and shows variable is not CFString.

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  • Objective-C, .m / .mm performance difference?

    - by Sam
    I tend to use the .mm extension by default when creating new classes so that I can use ObjC++ later on if I require it. Is there any disadvantage to doing this? When would you prefer .m? Does .m compile to a faster executable (since C is generally faster than C++)?

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  • How to hide UIStatusBar and show UINavigationBar at the top when UIView changes to LandscapeOrientat

    - by KayKay
    I am using two views (portraitView and landscapeView) loaded from xib in a viewcontroller for different InterfaceOrientation each for Portrait and Landscape mode. The view in portrait mode has statusbar and navigationbar and other one has just the navigationbar. The problem is that even i made statusbar hidden programatically the view in Landscape mode has blank space left at the position of statusbar and below is navigationbar which is for sure looking embarrassing. Is it possible to put the navigationbar at the top - replacing the statusbar position. I tried many options like. if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight) { [[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO]; self.navigationController.navigationBarHidden = NO; [[self view] setFrame:CGRectMake(0, 0, 480, 320)]; self.navigationController.wantsFullScreenLayout = YES; self.view = self.landscapeView; } But despite all this efforts it only lefts the same 20x480 pixels blank space and below it navigationbar. But here there is no end to trouble when I switch back to portraitView, the navigation bar hides behind the statusbar mere showing remaining 320x(44-20)px on top. Please help and thanks in advance.

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  • HTML character decoding in Objective-C / Cocoa Touch

    - by skidding
    First of all, I found this: http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape, but it doesn't work for me. My encoded characters (come from a RSS feed, btw) look like this: &#038; I searched all over the net and found related discussions, but no fix for my particular encoding, I think they are called hexadecimal characters. Thanks.

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  • Custom UIViewController is not responsive to device rotation

    - by Wayne Lo
    I have a custom UIViewController, which is the only subView of UIView. The UIViewController contains delegate function: (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } This function is called once when the application starts and is never called again when the device is rotated. I also notice that the willRotateToInterfaceOrientation function is never called. I pretty much commented out all the content in the UIViewController but it is still not responding to device rotation.

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  • Xcode warning: application executable contains unsupported architecture(s):arm, arm (-19031)

    - by rmvz3
    Hi all. I've been receiving this warning since I loaded my project in last Xcode 4 preview. There was no warning before that but now I can't get rid of it even in Xcode 3.2. I've been googling but nobody seems to have the same error. My project and target settings are correct (IMHO): Architectures: Standard (armv6 armv7), Base SDK: Latest iOS (currently set to iOS 4.2), Build Active Architecture Only: FALSE, Valid Architectures: armv6 armv7. I compared every project setting with other projects and and found no differences. I even have recreated the project starting from scratch and copying classes, resources and frameworks with the same result. I must say that the warning is not shown when I set Debug configuration. I hope someone can help me because I don't know what to do. Thanks in advice.

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  • Custom MKPinAnnotation callout view similar to Default MKPinAnnotation

    - by Sijo
    i want to create a custom callout bubble on MKMapView. But i want to create the call out bubble in the same manner of default bubble. So how to create a View look like annotaion in this image I want a custom custom view which look like "Parked Location" annotaion in the following image. with custom width, height etc. P I am not able to add required details in Default bubble. Thats why am creating custom bubble. Plz help me..thanks..

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  • Having the output of a Console App in Visual Studio instead of the Console

    - by devoured elysium
    When doing "Console" apps in Java with Eclipse, I see the output being put in a text box on the IDE itself, instead of having a Console popping up like in Visual Studio. This comes in handy, as even after the program has exited, I can still make good use of the text that was written in it, as it doesn't get erased until I run it again. Is it possible to achieve anything like that with Visual Studio? I know that instead of doing System.Console.WriteLine(str); I can do System.Diagnostics.Debug.WriteLine(str); but it is not quite the same thing, as you get a lot of "junk" in the Output window, as all the loaded symbols and such. Even better, is it possible to have everything done in the IDE itself, when you run your app, instead of having the Console running? Thanks

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  • How load WebView with another URL when navigated through tab bar viewController

    - by TechFusion
    Hello, I have created window based application, root controller as Tab bar controller. WebView is being loaded in Tab bar interfaced ViewController's View.WebView is created using IB.WebView object declared in ViewController as per below. //ViewController.h @interface ViewController:UIViewController{ IBOutlet UIWebview *Webview; } @property(nonatomic,retain)IBOutlet UIWebview *Webview; @end I am calling [WebView loadrequest] method in -viewDidLoad method and stopLoading will be called in -viewWillDisappear method. I am again reload it in -viewWillAppear:animated method to load it again when tab bar is pressed. //ViewController.m @implementation viewcontroller @synthesize Webview; -(void)viewDidLoad{ [super viewDidLoad]; [self.Webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"www.apple.com"]]]; } -(void)viewWillAppear:(BOOL)animated{ [super viewWillAppear:animated]; [self.Webview reload]; } -(void)viewWillDisappear:(BOOL)animated{ [super viewWillDisappear:animated]; [self.Webview stopLoading]; } I am releasing WebView in -ViewDidUnload method -(void)viewDidUnload{ [super viewDidUnload]; [Webview release]; } -(void)dealloc{ [Webview release]; [super dealloc]; } Does Webview released correctly ? Here how to kill connection with URL when ViewWillDisappear method called ? How to load View with Different URL then it's loaded in -viewDidLoad method when ViewController interfaced tab is pressed ? Means if naviagated from one tab to another that ViewController interface tab which has WebView should load request with another URL. Does it correct to call [self.Webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"www.stackoverflow.com"]]]; this method again in -viewWillAppear:animated method to load with another URL ? Thanks,

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  • Calculating File size before download - Downloading NSURLConnection Slider timing

    - by sagar
    Ok ! Coming to the point directly. What I want to do is explained as follows. I have an url of MP3 file. ( for example Sound File ) Now, When user starts application. Download should start & for that I have implemented following methods. -(void)viewDidLoad { [super viewDidLoad]; NSURL *url=[NSURL URLWithString:@"http://xyz.pqr.com/abc.mp3"]; NSURLRequest *req=[NSURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:120]; NSURLConnection *con=[[NSURLConnection alloc] initWithRequest:req delegate:self startImmediately:YES]; if(con){ myWebData=[[NSMutableData data] retain]; } else { // [MainHandler performSelector:@selector(targetSelector:) withObject:nil]; } } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { NSLog(@"%@",@"connection established"); [myWebData setLength: 0]; } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { NSLog(@"%@",@"connection receiving data"); [myWebData appendData:data]; } -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { NSLog(@"%@",@"connection failed"); [connection release]; // [AlertViewHandler showAlertWithErrorMessage:@"Sorry, there is no network connection. Please check your network and try again."]; // [self parserDidEndDocument:nil]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { [connection release]; } Now, Above methods work perfectly for downloading. But missing points are as follows. I can not get the exact size which is going to be downloaded. ( means I want to know what is the size of file - which is going to be download )

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  • MPVolumeView, avoid displaying "No Volume Available"

    - by Emil
    Hey. I have a project with a MPVolumeView in it. It is set up, and it works, the only thing is that when I mute the device, the text "No Volume Available" comes up instead of the MPVolumeView. The volumeView is initialized in the view volumeBounds, with that view's bounds. MPVolumeView *volumeView = [[[MPVolumeView alloc] initWithFrame:volumeBounds.bounds] autorelease]; [volumeBounds addSubview:volumeView]; [volumeView sizeToFit]; Thanks :)

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  • MPVolumeView, avoid displaying "No Volume Available"

    - by Emil
    Hey. I have a project with a MPVolumeView in it. It is set up, and it works, the only thing is that when I mute the device, the text "No Volume Available" comes up instead of the MPVolumeView. The volumeView is initialized in the view volumeBounds, with that view's bounds. MPVolumeView *volumeView = [[[MPVolumeView alloc] initWithFrame:volumeBounds.bounds] autorelease]; [volumeBounds addSubview:volumeView]; [volumeView sizeToFit]; Thanks :)

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  • UItabBarItem highlight state image

    - by Paul Solomon
    I'd like to be able to change the highlighted state image on an UITabBarItem when it is selected? Is it possible to subclass and access this? or do I need to roll my own navigation code? - start edit I didn't articulate what I was looking for earlier. I am looking for the semi-transparent white overlay reference that the device adds to the selected state/image of the UITabBar. See image! http://solomon71.com/images/UITabBarItem.png

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  • Strings in Objective-C++

    - by John Smith
    I just switched my code from Objective-C to Objective-C++. Everything goes swimmingly except for two lines. NSString * text1=[[NSString stringWithFormat:@"%.2f",ymax] UTF8String]; This line complains that error: cannot convert 'const char*' to 'NSString*' in initialization The second error related to the first is from the line: CGContextShowTextAtPoint(context, 2, 8, text1, strlen(text1)); It complains that error: cannot convert 'NSString*' to 'const char*' for argument '1' to 'size_t strlen(const char*)' Is there something I missed in the differences between ObjC and ObjC++?

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  • How to load a UIView from a NIB?

    - by Winder
    I have been using UIViewControllers and initWithNibName with much success, basically using them as a convenient way to design the view with Interface Builder. Unfortunately I have built a hierarchy of views before noticing this line in the UIViewController documentation: Note: You should not use view controllers to manage views that fill only a part of their window My question is this: Having a very simple NIB that only has a UIView in addition to the default First Responder and Owning Object, what is the simplest way to load the UIView into my code? I have not been able to get loadNibNamed:owner:options: to work at this point, but suspect the answer will involve it somehow.

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  • What causes this error? "CALayer position contains NaN: [240 nan]"

    - by Kevlar
    I've seen this happen whenever i rotate a screen that has a UITableView on it. I've found out that it happens inbetween the willRotate and didRotate method calls in UIViewController My co-workers have seen it in other spots as well, usually around rotation. It hadnt started happening until very recently, and we're stumped as to how we should deal with it (google searches don't turn up the error message in its exact form). Has anyone else encountered this that knows what to do about it?

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  • Reload UItabbar view when using selectedIndex

    - by Hetal Vora
    Hi, In my application I have 4 tabs in my tab bar. There is a navigation where if i click on a button on tab bar 2 view, it should take me to tab bar 3 view. I am doing this by using setting the selectedIndex property of tab bar like appDelegate.tabBarController.selectedIndex = 2; However, this doesn't reload the view of tab bar 3. It simply shows the tab bar 3 view that was last accessed (which may be down the navigation hieararchy in tab bar 3). Please help as to how can i reload the root view of tab bar 3. I tried having the delegate method of tabbar as below: - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { [viewController.navigationController popToRootViewControllerAnimated:FALSE]; } but this works only if I click on a tab to go to the view and doesn't work with selectedIndex.Please help.

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  • Animating a custom property of CALayer subclass

    - by jemmons
    I have a CALayer subclass, MyLayer, that has a NSInteger property called myInt. I'd really like to animate this property via CABasicAnimation, but it seems CABasicAnimation only works on so-called "animatable" properties (bounds, position, etc). Is there something I can override to make my custom myInt property animatable?

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  • Can I center a UIToolbar item?

    - by Ben
    I am putting a label on a UIToolbar (per this tip: http://stackoverflow.com/questions/333441/adding-a-uilabel-to-a-uitoolbar). But the toolbar has a button on the left side, and so flexible spaces throw the label off the center, which is where I'd like it to be. Can I somehow center this toolbar item so that it remains centered in the toolbar? (Already tried balancing the button with a dummy fixed space, no dice.) Thanks!

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  • iPad popover textfield - resignFirstResponder doesn't dismiss keyboard

    - by mosdev
    I have two text fields email and password. The following code works fine when the fields are presented on a regular view but when they are on a popover, the resignFirstResponder does not work (becomeFirstResponder works). textFieldsShouldReturn was called for both fields. Any idea if I am missing something? Thanks! - (BOOL)textFieldShouldReturn:(UITextField *)theTextField { if (theTextField == email) { [password becomeFirstResponder]; return NO; } [theTextField resignFirstResponder]; return NO; }

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