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  • How do I create rows with alternating colors for a UITableView on iPhone?

    - by Mat
    Hi all, i would to have alternate 2 colors of rows, like the first black, the second white, the third black, etc, etc... my approach is like a basic exercise of programming to calculate if a number is odd number or not: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; cell = ((MainCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]); if (cell==nil) { NSArray *topLevelObjects=[[NSBundle mainBundle] loadNibNamed:@"MainCell" owner:self options:nil]; for (id currentObject in topLevelObjects){ if ([currentObject isKindOfClass:[UITableViewCell class]]){ if ((indexPath.row % 2)==0) { [cell.contentView setBackgroundColor:[UIColor purpleColor]]; }else{ [cell.contentView setBackgroundColor:[UIColor whiteColor]]; } cell = (MainCell *) currentObject; break; } } }else { AsyncImageView* oldImage = (AsyncImageView*) [cell.contentView viewWithTag:999]; [oldImage removeFromSuperview]; }return cell; The problem is that when i do a rapid scroll, the background of cells become like the last 2 cell black, the first 2 cell white or something like this, but if i scroll slow works fine. I think the problem is the cache of reusableCell. Any ideas? TIA

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  • Designing the iPhone interface in a nib or in code?

    - by Jacob Relkin
    I've been pondering over this question for a long time already. On the one hand, Interface Builder offers a really easy way to design the interface and wire the elements up with objects in code. On the other hand, in larger projects, Interface Builder becomes a hassle to maintain. Any suggestions would be greatly appreciated.

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  • can iPhone application use push service if deployed via enterprise deployment?

    - by Akash Kava
    Based on following question push notification service cost I want to know, will my application receive push notifications if it is deployed via Enterprise deployment, and is there any limit of number of installations of enterprise deployment for push notifications, we currently have 10000+ users, but the application is only for the members and god knows if apple rejects it to put it on appstore.

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  • iphone sdk: autorotate jumps back up the page, showing information that has already been read...

    - by jonathan
    Hi, I am using - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{ return YES; } to allow rotation, which works fine - except that the landscape view jumps backwards up the page that is being displayed. I can't figure out what I should be looking at to fix it. I just want the page to rotate where it is. Any pointers would be great. Am a noob, as is probably clear. Thanks Jonathan

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  • ORM on iPhone. More simple than CoreData.

    - by Alexander Babaev
    The question is rather simple. I know that there is SQLite. There is Core Data also. But I need something in between. More object-oriented than SQLite API and simplier than Core Data. Main points are: I need access to stored entities only by id. No queries required. I need to store items of a single type, it means that I can use only one table if I choose SQLite. I want automatic object-relational conversion. Or object-storage if the storage is not relational. I can use object archiving, but I have to implement things (NSArchiver). But I want to write some kind of class and get persistence automatically. As it can be done with Hibernate/ActiveRecord/Core Data/etc. Thanks.

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  • What's the best way to fix memory leaks on the iPhone?

    - by Anthony Glyadchenko
    I'm trying to use XCode's Leaks utility to fix some memory leaks in my code. Is there a better and more understandable way to check for leaks with explanations that pinpoint the exact line and/or offer suggestions? Another question, I'm using AVAudioRecorder in my code in one of my view controllers. Should I load the recorder in viewDidLoad or in viewWillAppear?

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  • How can I quickly set the iPhone deployment target in Xcode?

    - by nevan
    I was reading this great article about Base SDK and Deployment targets and decided to try it out myself. The Deployment target seems to be buried in the Build settings, and not that easy to access compared to the Base SDK target (which is right there in the General tab of the project settings). To get to the Deployment settings now I have to Get Info, go to the Build tab, then search for "Deployment". Is there a quick way to check and access the Deployment target in Xcode that I'm missing?

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  • How to bind the arguments in NSString in iphone?

    - by Prash.......
    Hi, i developing an application in which i want to bind my own parameter with an URL for http post request. But i findout the serious problem during the string binding, The code snippet as follows: NSString *mainURL1 = @"http://xxx.xxx.xx.xx/webservice/Service.asmx?op=UserDetailsNew?"; NSString *mainURL2 = [mainURL1 stringByAppendingString:@"MobileNo=%@",txtMobile.text]; NSString *mainURL3 = [mainURL2 stringByAppendingString:@"&Country=%@",txtCountry.text]; NSString *mainURL4 = [mainURL3 stringByAppendingString:@"&UserName=%@",txtName.text]; NSString *mainURL5 = [mainURL4 stringByAppendingString:@"&ScreenName=%@",txtScreenname.text]; NSString *mainURL6 = [mainURL5 stringByAppendingString:@"&EmailId=%@",txtemailid.text]; NSString *mainURL7 = [mainURL6 stringByAppendingString:@"&Password=%@",txtpassword.text]; NSString *mainURL8 = [mainURL7 stringByAppendingString:@"&RetypePassword=%@",txtretypepassword.text]; NSString *mainURL9 = [mainURL8 stringByAppendingString:@"%20HTTP/1.1"]; on binding the runtime arguments it ginev me too many parameter appending in NSString function. how i solve above problem?

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  • What happens to an ad hoc installed iPhone/iPad app when a new iTunes profile is synced against?

    - by user363100
    I'm currently involved in a project where a number of iPads loaded with a special app are given away to a number of people at a certain event. Both because of time constraints as well as our desire to give these people a really exclusive app, we decided to prepare these devices using ad hoc installs of the app. What will happen to the app when the recipients of the device decide to sync it with their existing iTunes account instead one of our "recipient x" accounts?

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  • iPhone:How to make navigation top bar style to same like "Black Navigation Bar" programmatically?

    - by Getsy
    I have a Navigation project which has only a TableView. By default, i could see the navigation bar there when running the application. I want to change the navigation bar style to same like if we see in I.B there is one called "Top Bar" which has "Black Navigation Bar" style (Which shows Black navigation top bar but some kind of Gray shade will be there). I want the same in my navigation bar now, not any other color or style. How do i fix it? Note: 1. I used "self.navigationController.navigationBar.barStyle = UIBarStyleBlack;" , but it shows the navigation bar in utter black color. I don't want that, i want some kind of Gray shade in black, similar to "Top Bar" which has "Black Navigation Bar". I tried some tint color addition to the above, like "self.navigationController.navigationBar.tintColor = [UIColor grayColor];" but i observe the same utter black shows in navigation bar. I tried "navigationBar.barStyle = UIBarStyleBlackTranslucent;" but it doesn't fit and show with status bar properly. Instead it overlaps(hidden) half black with status bar and half black shows outside. Could someone teach me? Thank you.

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  • How to save Application State using NSUserDefaults in iPhone?

    - by keith
    Hello Everyone, Following is what i am doing: - (void) applicationWillTerminate: (UIApplication*) application { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [defaults setObject:navigationController.viewControllers forKey:@"diabetesstate"]; } - (void) applicationDidFinishLaunching: (UIApplication*) application { NSMutableArray *state = [[NSUserDefaults standardUserDefaults] objectForKey:@"diabetesstate"]; if (state == nil) { //Will initialize a new controller and put it as root view controller } else { [navigationController setViewControllers:state animated:NO]; } }

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  • Ideas for loading initial data in an iPhone application?

    - by Derek Clarkson
    Hi all, In my app I want to load some initial data to show the user how it works. The app uses a CoreData managed sqllite db. SO far I've thought of 3 options: Write code into a class to programmatically create the data. Create a xml file in the apps resources and load through a NSXmlParser whose delegate creates the entries in the sqllite db. Same as option #2, but use a json file and bring in a 3rd party lib to read it. Are there other options I have not found yet? and given that I'm talking about perhaps 6 records per table when there are 3 tables, which would you choose?

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  • How can I stop the iPhone from displaying a transform change until after the screen is redrawn

    - by Ed Marty
    I have found the UIScrollView's zooming mechanism to be clunk and essentially unusable. So instead, I'm rolling my own. I have a UIView that resizes itself with the pinch-zoom, and that's working fine. When the zoom is complete, the view needs to reset its transform and redraw the images. The zoom works essentially in the same way the UIScrollView does. It sets the transform property of the UIView until complete. Then, when the zoom finishes, I want to reset the transform to CGAffineTransformIdentity, resize the frame to be the size it was before, and tell the view to redraw itself at the new size. It all works pretty well, except when I change the transform to identity then redraw the image, there is a slight flicker before the image completely redraws. This is due to the fact that I'm using a subclass of CATiledLayer, since the view can be of arbitrary size. I've overridden the fadeDuration to be zero, but there is still a flicker while the transform is reset before the redraw is finished. Is there any simple way to overcome this without creating another view to draw with then replacing it?

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  • iphone how to determine and code according to base sdk version?

    - by Nareshkumar
    I have a code for UIImage picker photoImagePicker=[[UIImagePickerController alloc]init]; photoImagePicker.delegate=self; photoImagePicker.sourceType=UIImagePickerControllerSourceTypeCamera; photoImagePicker.mediaTypes=[UIImagePickerController availableMediaTypesForSourceType:photoImagePicker.sourceType]; [self presentModalViewController:photoImagePicker animated:YES]; photoImagePicker.showsCameraControls = YES; //Doesnot work on 3.0 photoImagePicker.navigationBarHidden = YES; photoImagePicker.toolbarHidden = YES; photoImagePicker.allowsEditing=YES; //Doesnt work on 3.0 Now everything works fine when the sdk is 3.1 or higher but when i put the os version as 3.0, the code starts showing errors. Turns out these methods were not present in 3.0 and so errors. I want to keep a mechanism which will enable these for higher versions(3.1) and at the same time work properly for 3.0 version. How do i do it? One solution i have thought of is to verify the version value and then put that code. But i am not sure how this is got. Any help will be appreciated.

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  • Why doesn't the SplitView iPhone template have a nib file for the RootView?

    - by Dr Dork
    I'm diving into iPad development and am learning a lot quickly, but everywhere I look, I have questions. After creating a new SplitView app in Xcode using the template, it generates the AppDelegate class, RootViewController class, and DetailViewController class. Along with that, it creates a .xib files for MainWinow.xib and DetailView.xib. How do these five files work together? Why is there a nib file for the DetailView, but not the RootView? When I double click on the MainWindow.xib file, Interface Builder launches without a "View" window, why? Below is the code for didFinishLaunchingWithOptions method inside the AppDelegate class. Why are we adding the splitViewController as a subview? (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after app launch rootViewController.managedObjectContext = self.managedObjectContext; // Add the split view controller's view to the window and display. [window addSubview:splitViewController.view]; [window makeKeyAndVisible]; return YES; } Thanks so much in advance for all your help! I still have a lot to learn, so I apologize if this question is absurd in any way. I'm going to continue researching these questions right now!

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