how does flutter implement custom navigation bar similar to Jinri Toutiao s navigation at the bottom of the head ...
problem description I have two ViewController, one ViewA to search and display the Bluetooth list, and one ViewB to control the operation of Bluetooth devices. Now I inherit CBCentralManagerDelegate , CBPeripheralDelegate on ViewA and search for th...
when will the attributes added by ios in the classification be released? ...
problem description I m doing an APP setup interface, with a UIView at the top, followed by a set of Tableview. I wanted UIView to scroll with UITableView, so I added UIView as the head view of UITableView. After the addition is successful, the botto...
topic description Is [String] in the picture below a cast? It feels awkward! related materials what result do you expect? What is the error message actually seen? help me analyze why it is written this way. Is it okay not to write [String]...
find out a set of results for sqlite, then run a for loop on this group of results and continue to check the database with sqlite to get similar results. Here is the method I am currently using. Is there an easy way? sources of topics and their own id...
iOS receives real-time images through an external camera connected to WiFi. Now I have no clue. ...
how to copy swift closures ...
now, after 19 years, Xiaobai has come to find out what architecture framework iOS Android has for new projects, considering decoupling and expansibility. He has modestly learned a lot of advice ...
UITapGestureRecognizer *tap =[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDeteted:)]; tapaction...
problem description I use < nz-tabset > to do a tab navigation the environmental background of the problems and what methods you have tried re-install,Stack Overflow related codes <nz-tabset> <nz-tab nzTitle="Tab 1"> ...
public var dataList: Array<Any> { get { var list = objc_getAssociatedObject(self, AssociationKeyFromSelector(-sharpfunction)) as? Array<Any>; if list == nil { list = []; objc_setA...
static var mainWindow: UIWindow { get { let app = UIApplication.shared.delegate as! AppDelegate; if app.window != nil { app.window!.backgroundColor = .white; app.window!.makeKeyAndVisible(); return...
iOS uses pod to search and install DifferenceKit prompts that the installation failed and could not be found. Is there any way to solve it? Or the problem of uploading by the author himself. All other pod libraries are normal: Unable to find a pod wit...
problem description excuse me, the following picture shows the structure of my iOS application page, which basically uses TabBarController as the starting screen , then the third sub-page (ThirdView) is NavigationController, followed by a FourthViewCo...
our APP type, uses Webview to render text content, we have a function is to long press the selection, and then save some text. for the current long press, it always feels like it takes a long time to activate, maybe 500 good seconds. We want to change...
in SpriteKit, if you want to do an infinite scrolling of a background, just stack one background on top of another, and then constantly change the y-axis coordinates, then how to achieve the feeling of infinite scrolling if the background is an irregula...
what is the idea of ios similar to map sdk to read picture resources from the basic resource database? ...
Hello, great gods. I am now in the development of iOS image processing APP encountered a problem which involves Poisson fusion, suffering from the result processing speed is too slow. how to solve the problem quickly in order to render the results in...
question 1: is the reference count for the object or the memory where the data is stored? if it points to an object. But when decorated with Strong. I increased the reference count of T2 = t0 _ 0 _ t0 _ 0 _ T _ 1 ~ T _ 3 by 1 to 3, indicating that it i...
report navIdx is not defined s error in this way ...
how does 1.zuul directly perform client-side load balancing in spring boot2 cloud? 2. Environment: spring boot 2 spring cloud,zuul do gateway 3. Want to implement: how can two same consumer producers ab,a have one more ResquestMapping, than b to acces...
problem description display camera data with surfaceview. When the Dialog object calls the show method, the camera drawing displayed in surfaceview will be reversed by 180 degrees. Once the Dialog object is closed, it is reversed again by 180 degrees....
what do you mean by div:target+a in the following code style? I understand the "+ " sign. I don t understand why div:target? Shouldn t target be preceded by the url address of the a tag? <!doctype html> <html> <head> <me...
there was an error in using tortoise git for git clone. how to solve this problem? Baidu can t find a solution ...