coursera ios app development basics

encoding:nsutf8stringencoding]); NSString *content=[nsstring Stringwithcontentsoffile:testpath encoding:nsutf8stringencoding Error:nil]; NSLog (@ "file read succeeded:%@", content); } J: File attribute:-(void) fileattriutes{nsstring *documentspath =[self Dirdoc]; NSString *testdirectory = [Documentspath stringbyappendingpathcomponent:@ "test"]; Nsfilemanager *filemanager = [Nsfilemanager Defaultmanager]; NSString *testpath = [testdirectory stringbyappendingpathcomponen

8. Upload the app using the application Loader toolContinue to the seventh step of the app created in itunes, open the app, asAfter clicking the Details button, click the Ready to Upload binary button in the upper right corner, asPop up a window asking if there is an encryption algorithm in the code, art export law prohibits any encrypted software from flowing ab

IOS Time Processing Do not have to do the app to deal with time, about the processing of time, there are many doorways, far from a row of API calls, get the current system time so simple. We need to understand the differences between the various APIs related to time, and then design the corresponding mechanism for different scenarios. The form of time Before we get into the deep discussion, we need to be

This article reprinted to http://www.cocoachina.com/ios/20130402/5926.htmlIf you want to enter the mobile app development area, you can always find a variety of methods and tools from other developers or online or book, for beginners, have not yet found the way to be lost. Here are 20 recommended tools to help you streamline your

Qt-qml mobile development-Overview of app development and deployment process on ios, qt-qmlios Qt5.3 fully supports mobile development. In addition to mac, windows, and linux, it also supports ios, android, wp, meego, and other mo

Hybrid app development, the front-end development H5 page, will inevitably pull in the compatibility, in the page compatibility colleagues, will have some data interaction with the native app;Hybrid app development, Android compat

IOS 9 app development tutorial-custom app icons and real-machine testingIOS 9 app development tutorial-custom app icons and real-machine test custom

Custom app icons and real-computer tests for IOS 9 app development TutorialsCustomizing the iOS9 application iconin the figure 1.12 The icon in the application can be seen as a mesh white image, which is IOS The default icon for the application on the emulator. This icon can

One, Introduction as the C,controller in the MVC design pattern has been the most important role in project development, it is a bridge between view and data, through its management, the data methodically displayed on our view layer. Uiviewcontroller in iOS is one of the most basic classes in the Uikit framework. From the first UI view to the complex complete project, it is inseparable from the uiviewcont

considerable. In iOS development, saving memory means improving overall performance. Example application of the pattern of the privilege We created a websitefactory factory class to maintain the objects in the pool, returning various types of specific objects based on the parent type, with the following code: Copy Code code as follows: #import #import "WebSiteProtocol.h" @interface Websi

First, what is CoreDataCoreData is a framework for managing data that has great advantages in both performance and writing, and in database management, Apple strongly recommends that developers use the CoreData framework, said in Apple's official document, While it's a bit exaggerated to use the CoreData framework to reduce the amount of code that developers 50%--70%, CoreData is really powerful. II. Design Data Modelin iOS

I. The role of a single caseas the name suggests, a single example, that is, the object of this class can only be initialized once in the entire project. Its characteristics can be widely used in some resources that need to be shared globally, such as management class, engine class, and can be realized by single example. UIApplication, Nsuserdefaults, etc. are all systems in iOS as a single example. Two ways of writing a single case pattern1, commonl

;} In the development of software, consider the use of the appearance of the pattern is generally divided into three kinds of situations. In the first case, in the initial stage of design, it is necessary to have a conscious separation of two separate layers to create a façade between layer and layer, which can provide a simple interface for complex subsystems, thus greatly reducing the coupling. In the second case, subsystems tend to become more

iOS 9 App development tutorial iOS 9 new features iOS 9 development overviewIOS 9 is currently the latest operating system used by Apple for Apple phones and Apple tablets. The operating system was released on June 8, 2015 (US tim

ArticleDirectory The first meta tag indicates: The second meta tag indicates: First meta: Second meta: The development of touch screen websites is actually much better than the development of mobile websites in the past few years. The browsers of iOS, Android, bbos6, and other mobile devices are the core of WebKit, this shows that HTM