I'm the preface.The main () function of an iOS app is located in Main.m, which is a well-known program entry . But knowing more about OBJC found that the program had executed a lot of code before entering our main function, such as the well-known + load method. This article will follow the sequence of execution of the program, inquiring, from Dyld to runtime, to
don't you look at the runtime? At run time you can get all the information of a class, including the property name, value, method name parameter, know what is the runtime to replace your method and system method, to check what is iOS black magic,13. Almost, the project peri
What are the advantages and disadvantages of iOS-Swift compared with Objective-C,
Swift is a new development language released by Apple at the 2014 WWDC (Apple Developer Conference). It can run together with Objective-C on Mac OS and iOS platforms, it is used to build applic
I'm the preface.The function of an iOS app is main() located main.m in, which is the program portal we know well. But knowing more about OBJC found that the program main has executed a lot of code before entering our functions, such as familiar + load methods. This article will follow the sequence of execution of the program, inquiring into, and dyld runtime seei
Menuheightconstraint, so that we have an association with the constraint conditions.
Now we add the following code to the "+" button method:
Ismenuopen =!ismenuopen
Menuheightconstraint.constant = Ismenuopen? 200:60
Titlelabel.text = Ismenuopen? "Select Item": "Packing List"
Uiview.animatewithduration (1.0, delay:0.0,
usingspringwithdamping:0.4, initialspringvelocity:10.0,
Options:. Curveeasein, animations: {
Self.view.layoutIfNeeded ()
Let angle = Self.ismenuopen? CGFloat (m_pi_4): 0.
Recently saw Jsonrpc, a little understanding of the next RPC, but the Internet to see the information is basically repetitive, and really do not understand. I would like to ask a few questions:
What is the difference between RPC and HTTP requests, what are the advantages, and how efficient
Whether the app (
The author has done some optimization work in the iOS development process, has some superficial understanding to the iOS performance optimization, has been wanting to own these experiences, summarizes briefly.As the first of the series, I intend to summarize some of the general principles of iOS optimization. Because I think whether the list smoothness optimizati
HybridApp three kinds of development models, it is difficult to say that the three models of the more superior, the current situation can be said to be three points of the world, different developers can choose different development mode according to their actual situation. It's really boring to talk about patterns that are best.
Nativeapp refers to a localized application, which is a standalone app t
Objective:Some people see this problem, the first feeling of the answer is "because you are a junior engineer, he is the engineer Bai ~". This is really a good answer! No matter what kind of occupation has a process from "beginner" to "advanced", no one can skyrocketing rise, born to be an architect or CTO. So how do y
Beginner iOS Development students, whether it is written by themselves, or pasted code, more or less have written the following code[[NSBundle Mainbundle] pathforresource:@ "Somefilename" oftype:@ "yourfileextension"];[Yourviewcontroller initwithnibname: "Yourviewcontroller" bundle:nil];But you know what the bundle here is
Beginner iOS Development students, whether it is written by themselves, or pasted code, more or less have written the following code[[NSBundle Mainbundle] pathforresource:@ "Somefilename" oftype:@ "yourfileextension"];[Yourviewcontroller initwithnibname: "Yourviewcontroller" bundle:nil];But you know what the bundle here is
thinks that choppy is generated during the process of running the software, after all, the initial factory mobile phones that have not installed any applications are basically not smooth or delayed, in addition, a smart phone does not install any applications, which does not meet the user's original intention and use behavior. So in the final analysis, what is t
in the front end of the mobile end more than the PC end what knowledge, why interview many companies are asked h5 level how? I have been doing web front-end development for several years , just talk about my feelings. First Look at some of the differences between PC and mobile in front-end development: (1)PC is concerned with browser compatibility, mobile development considerations are more mobile compat
and initialized within the function, but the lack is not immediately released, and the best way to handle it is as follows:-(nsarray*) Gettemplatesbypath: (NSString *) path{Nserror * error = NIL;nsarray* files = [FileManager Contentsofdirectoryatpath:path error:error];if (Error! = nil)return nil;nsmutablearray* resultarray = [Nsmutablearray new];for (Nsinteger index=0; index {nsstring* fileName = [Files Ob
The Apple WWDC2014 conference unveiled a number of exciting updates on iOS8, including Iclouddrive, Osxyosemite and iOS8 collaboration, ibook sharing mechanism, Quick type predictive input, swift programming language, IOS8 upward compatibility and so on, this article focuses on the new feature API for developers to introduce.
Now, developers can use Apple's official method to achieve a real-time "frosted glass" effect (Uivisualeffect Class Reference). Before that, although many apps use
IOS FAQ (What ghost series)--problems that cannot be modified from the code after adding Size Class mizmization in Storyboard, storyboardsizeclass
Preface
The company's products are compatible with the iPhone and iPad at the same time, and insist on using Storyboard for adaptation. Today, another pitfall (previously encountered) thinks it is a ghost problem
iOS developers say that only a suffix named P12 is available.
After I converted this p12 to PEM and wrote a send test with PHP, I was prompted:
Unable to Connect:tls://gateway.push.apple.com:2195:2(Stream_socket_client (): Failed to enable crypto)
I see that there is a need for a certificate and a private key text, that
1. Product Design DrawingCan be designed with a 6 aspect ratio of 750*1134. These images are used to describe what the app looks like, which is a development reference for app developers.2. Product Cut ChartThe designer will cut the design into a diagram that can be used for development.Color valuesiOS color values take RGB color values such as a certain color value, given
I have graduated from college for three months and have been working for two months. I feel that the progress in the company is too slow and I want to go to training. Currently, many training institutions provide ios, android, and html5. Which one is better, in terms of prospects and salary, I would like to give you an answer. Thank you (Supplement: c and c join
2008, the best answer for the post was answered by a developer from Twitteriffic in 2010, but today, the number discussed in the post is still very reliable, and I expect it to remain valid by the end of 2012. My offer is dwarfed by the numbers in this post.The trend now is what companies want to engage an
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