what"s the difference between NSStringFromClass (self) and NSStringFromClass ([self class])?
what"s the difference between NSStringFromClass (self) and NSStringFromClass ([self class])?
popularize the QR code what to do when 1 out of 1 million people cannot generate a QR code? ...
how to compile lame3.1.0? I directly make reported that I couldn t find X841464 ....
how do I use classification to implement lazy loading attributes in inheritance? ...
the system navigation bar is hidden on the front page according to the demand, and the navigation bar is displayed on the next page, so the problem should be very simple: the first thing that comes to mind is the inversion of ViewwillAppear: and Viewwi...
it is possible in China. But when I called American customer service, he said he couldn t open it. Has anyone ever encountered this problem 2018.05.09 know from the front end that the website server has set IP restrictions and can only be accessed...
libo info that .a spends X86-64 but reports this error when running ...
can homebrew only install the latest version of the software? where is the source of the software, homebrew s own server? what s the difference between downloading and installing the root itself from the official website? ...
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such as svnserve-- version ...
can uicollectionview different section use different layout? ...
the YUV420 data is obtained by pulling the data. How to transfer the CMSampleBuffer, that needs to be converted to kCVPixelFormatType_32BGRA? ...
pagemenu, is used in the project, but cannot set which page to display after entry. It can only be moved to the specific page via moveToPage _ pageMenu = [[CAPSPageMenu alloc] initWithViewControllers:controllerArray . ...
No registration function. Create a batch of accounts at the backend and provide test accounts to app store,. Can you pass the verification ? < H2 > my app is set to be free < H2 > ...
iOS11 before webview loading url, occurred redirect deadlock {ErrorDomain = kCFErrorDomainCFNetwork Code=-1007 "too many HTTP redirects " , this problem will not occur after iOS11. Why? ...
I have tried the method of setting flag bits in various build setting is invalid. Please help me. Thank you. ...
textView.dataDetectorTypes = UIDataDetectorTypeAll; is an attribute of the ios system to identify mailbox linked phones, but Red is the red I set to identify linkTextAttributes rich text. How to remove the gray underline? I didn t set it, but you c...
there are two input input boxes on the rt: page. When the input method is called on the iphone, the page will be topped up, how to set it up so as not to be topped. look up some solutions on the Internet, all with an input box at the bottom of the page,...
the OC project cocoapods has installed a Swift library, how to call it? ...
I have several questions to ask for help Press the button when coming, and the screen will display "XXX tone connection " as follows https: imgur.com bw5l6pY then start to calculate the call time now I want him to stay in the XXX connectio...
- (void)viewDidLoad { [super viewDidLoad]; NSArray * imageList = @[@"Googleplus",@"Twitter",]; UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(20, 20, 100, 100)]; imageView.backgroundColor = ...