ios6

问题 I am trying to create an app that pops up like a second password screen every time the user unlocks the phone. User unlocks phone -> custom security app opens -> custom security app closes and pushes user to home screen Is this possible to capture the phone unlock event and open your app? Thanks! 回答1: Definitely not. Third-party apps don’t get that amount of control over the system. 来源： https://stackoverflow.com/questions/12573807/how-to-open-app-on-iphone-unlock

问题 I am doing push notification for updating a pass. I can send pushToken to APNs. What about changeMessage key ? How to make it ? How to use it ? 回答1: To use the changeMessage key, you just add it to your JSON dictionary. Then when a new .pkpass bundle is received, if the new field value is different to the value in the old .pkpass bundle, the change message will trigger. If you add %@, then this will be replaced with the new value "auxiliaryFields" : [ { "key" : "rewards", "label" : "Reward

问题 I am trying to add a CIFilter to the backgroundFilters property of a CALayer to let this draw in a UIView . Therefore I subclassed CALayer and in the init execute the following: CIFilter* blur = [CIFilter filterWithName:@"CIGaussianBlur"]; [blur setDefaults]; [blur setValue:@(10) forKey:@"inputRadius"]; self.backgroundFilters = @[ blur ]; Then I created a subclass of UIView that has this custom Layer as it's layer by returning the layers class in +[UIView layerClass] This is working, the

问题 Update: Strangely, setlocale() only fails on the iOS Simulator so I have amended the question title. It works fine on actual devices. I'm working with native (C/C++) code under iOS 6 and I need to format arbitrary wchar_t strings. However, when formatting strings containing codepoints outside the Latin-1 codepage, swprintf fails (return value -1 with errno= EILSEQ ). wchar_t buff[256]; swprintf(buff, 256, L"\u00A9 %ls", L"ascii"); // works swprintf(buff, 256, L"\u03A0 %ls", L"ascii"); // will

问题 I'm having a very strange behavior: in iOS 5 I present UIImagePickerController in this way: imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; imagePicker.modalPresentationStyle = UIModalPresentationFullScreen; imagePicker.modalTransitionStyle = UIModalTransitionStyleCoverVertical; [self presentModalViewController:imagePicker animated:YES]; now in iOS 6 this produce a crash. I resolved the crash by writing a category on UIImagePickerController : @implementation

问题 Is it possible to detect a silent SMS in application? I'm working on a project that registers users by SMS verification code (Phone number). The current workflow in application is that the user writes his phone number and requests verification code. The server sends the verification code by SMS to the previously written phone number. Now the part that I want to change is, instead of forcing the user to shut off my application and go to the SMS app to copy the verification code, then going

问题 How to display data from SQLite to label using FMDB like this: I would like to display whatever the output is in this format for the user to see. No Interaction. Only display for the select query. 回答1: If you want to add UILabel objects, just iterate through your result set, adding labels to your view. Something like: NSInteger rowNum = 0; NSArray *columnWidths = @[@(50), @(120), @(75), @(75)]; CGFloat rowHeight = 24.0; FMResultSet *rs = [db executeQuery:sql]; while ([rs next]) { CGFloat x =

问题 I want to save an epub format file from url into App Document Directory.When I hit this url in browser it provides a downloading file where as when I send the request in NSURLConnection it provides me data, upon converting this data in to NSString return NULL.How to save this file with success. My Code snippet is this :- - (void)viewDidLoad { NSMutableString *str = [[NSMutableString alloc] initWithFormat:@"http:// url", tagId];<br/> NSURL *url = [[NSURL alloc] initWithString:str]; NSLog(@"URL

问题 I've been banging my head against the wall for the last hour trying to get my scrollView to scroll, but to no avail. In viewDidLoad I have NSURL *url = [FlickrFetcher urlForPhoto:self.photoData format:FlickrPhotoFormatLarge]; NSData *imageRawData = [NSData dataWithContentsOfURL:url]; UIImage *image = [UIImage imageWithData:imageRawData]; self.scrollView.delegate = self; self.imageView.image = image; self.scrollView.contentSize = image.size; self.imageView.frame = CGRectMake(0, 0, image.size

问题 Hi I am new to iOS programming.My requirement is to display the google maps in iOS6.That means it displays the total world map.Please check the attached image for clarification. 回答1: In iOS 6.0 and above you have some options: Use a UIWebView (the google maps rendering 'engine' is not present as before) to load the maps.google.com page Use the Google Maps iOS SDK ( Best Option ) Use MapBox and use similar topography rendering to google maps With the official Google Maps iOS SDK you can