ios7

问题 I'm making a messenger app and I want the user to click on image in my tableview and it should extend to full screen and show different controls on navigation bar. How do I go about it? I thought I can take the same image, put UIImageView on top of original cell image and animate it to full screen. But how do I go about presenting different controller without blinks, delays, and animations? This is done in many messaging applications. 回答1: Use a custom transition, to extend the image view

问题 I'm attempting to sync Core Data among devices using iCloud (using the new iOS7 method). I'm still seeing issues with the syncing when testing with the simulators. Sometimes data from one simulator won't sync to another simulator. What could ever be the problem? Here's most of the code from the AppDelegate.m: NSManagedObjectContext *context = [self managedObjectContext]; if (!context) [self displayAlert]; rvc.managedObjectContext = context; The main code: #pragma mark - #pragma mark Core Data

问题 This post is half question - half announcement.. i develop iOS applications which include UIWebView that performs javascript code. When i run the app on devices with the newly iOS 7, some of the functionality doesn't work. after long debugging, i have managed to isolate the reason. Javascript AJAX has a request API with the constructor method open : XMLHttpRequest.open(method,url,async) 'asynch' argument is false if the call should be blocking and true otherwise. the problem on iOS 7 safari

问题 I have a UIViewController on my storyboard that has 2 subviews side-to-side horizontally. I added constraints to fix the leading and trailing edges to a constant (20 pts), and another constraint to keep the widths equal. If I assume the following, it should be possible to calculate what the width of each subview will need to be: the subviews do not overlap there are no other views present (horizontally, at least) the width of the screen (the superview) is known However, XCode gives me a

问题 I'm looking to duplicate how the Facebook Messenger app shows the UISearchBar. When you tap the leftBarButtonItem in the navigationBar, the UISearchBar appears/animates from the top of the screen down, and when you cancel, it simply disappears upwards where it originated from. I used to have my UISearchBar as the default setup in my table view's header (in storyboard), but now I'm wanting to do what I stated above but I am not sure where to begin. My search displayer controller is still in my

问题 I have an app that started life for iOS 5 and has been updated ever since. For iOS 7 I have switched over to using an Asset Catalog for all the resources, which is nice and appears to work well. However, when I try to submit to Apple I get validation errors: Invalid Image Path - No image found at the path referenced under key 'CFBundleIconFiles': 'Icon@2x.png' I get the same error for the other icons, too. These icons do appear in the Asset Catalog and the names -- right down to the case --

问题 I have an app that started life for iOS 5 and has been updated ever since. For iOS 7 I have switched over to using an Asset Catalog for all the resources, which is nice and appears to work well. However, when I try to submit to Apple I get validation errors: Invalid Image Path - No image found at the path referenced under key 'CFBundleIconFiles': 'Icon@2x.png' I get the same error for the other icons, too. These icons do appear in the Asset Catalog and the names -- right down to the case --

问题 After updating my iPad (mini) to iOS7 I experienced that my drawing app is lagging and crashing after a few strokes. Now, when I run the app with Instruments/memory allocation tool in xcode 5, I see that the VM: CG raster data category is filling up rapidly when drawing on the screen. There seems to be a multitude of CGDataProviderCreateWithCopyOfData calls being made, each 3.00Mb in size. After continous drawing the app receives memory warnings, and usually terminates. The code basically

问题 Summary : In editing mode, I'm deleting rows in a table view using a custom editing control, rather than the default red minus sign and delete confirmation button. Tick a row or multiple rows, then tap the Delete button in the tool bar. It's similar to the behavior seen in the Mail app. See the screenshot below. Problem : The animations produced by calls to deleteRowsAtIndexPaths:withRowAnimation: are irregular. For example, here's what happens when I use the Bottom row animation (i.e.,

问题 On the iPad new ios 7 UIActionSheet is not correctly displayed with lots of buttons. Not cleaning background of UIActionSheet on scrolling. The buttons seem frozen in background UIActionSheet. screenshot with problem My code : UIActionSheet *popupQuery = [[UIActionSheet alloc]; for (int i=0; i<[ParamAllList count]; i++) { NSMutableDictionary *Param = [ParamAllList objectAtIndex:i]; [popupQuery addButtonWithTitle:[Param valueForKey:@"name"]]; [[[popupQuery valueForKey:@"_buttons"]