IOS

Unable to run the story board: Failed to instantiate the default view controller for UIMainStoryboardFile 'main', instantiate Failed to instantiate the default view controller for UIMainStoryboardFile 'main'-perhaps the designated entry point is

Various values: morphvoxpro values   NSArray and NSDictionary can only store objects, but cannot directly store any basic types of data, such as int, float, or struct. But you can use objects to encapsulate basic values. For example, encapsulate

IOS Performance Tuning series: Use Time Profiler to discover performance bottlenecks and tune profiler Hardware wide: The fifth article in the IOS Performance Tuning series, which is expected to be updated continuously over 20 articles. The last

Use of IOS UIWebView After more than a year of development in IOS, hybrid mobile development is becoming increasingly popular, because development costs and speed are better than traditional APP development, hybrid development is a combination of

KVC and KVO in IOS development, ioskvckvo KVC: Key-Value Coding KVO: Key-Value Observing   Person. m @ Interface Person: NSObject {// This access modifier is used to indicate that even private member variables can be accessed and assigned @ private

IOS Development notes-Basic UI (1)-simple calculator, iosui(1) UI is the foundation of the App: an App should first have a UI interface, and then add practical functions on the basis of the UI (2) the UI is relatively easy to learn: UI is generally

Two different methods are used to import header files. There are two different ways to import a header file: use quotation marks or use angle brackets. For example, # import and # import "Tire. h ". the statements with Angle brackets are used to

Solve the problem that OBJC_CLASS _ $ _ MBProgressHUD cannot be referenced (reprinted), mbprogresshud Undefined symbols for architecture i386: "_ OBJC_CLASS _ $ _ MBProgressHUD", referenced from: Objc-class-ref in ViewController. o Ld: symbol (s)

Apache server and webDav server can be configured quickly ., When you need to send a request by typing code at home, you can configure the local apache and Mac server. This is easier to use than the local server on windows. The following describes

Result Analysis of queues and execution in iOS multithreading, and ios Multithreading This article aims to organize the knowledge points in the multi-thread model that we have learned in the past. Queues in multiple threads include:Serial queue,

IOS -- Singleton design mode in Swift developmentRecently, I have developed a small application and encountered some common Singleton modes in Objective-c, but there are some differences in swift, I tried to find out that I couldn't play the cards

Conversion between IOS xml and NSDictionary Introduction: In ios, xml files or strings are often converted to NSDictionary; Requirements: The format of web Server requests and returned data is xml. controls need to be dynamically generated based on

Record the bugs in ios Posts are occasionally updated. Some of the ios bugs files are recorded. Some of them have been resolved, some are still unresolved, and some are apple's own improvements, but they are indeed stuck to us.UIWebView Memory

How to switch KVC values in ios-prepareForSegue scenarios During iOS development, storyboard can be used to directly switch the scenario, that is, jump between different viewcontrollers. During the jump process, the prepareForSegue method is

Ios development Note TextView 1. cannot scroll self.scrollEnabled = NO; 2. Normal font [UIFont systemFontOfSize:30.0f] 3. bold font [UIFont boldSystemFontOfSize:30.0f] 4. Text Box offset self.textContainerInset = UIEdgeInsetsMake(TEXTVIEW_TOP_

Ios swift-the first iOS Program Swift, a new development language released by Apple at the 2014 WWDC (Apple Developer Conference), can run with Objective-C * on Mac OS and ios platforms, it is used to build applications based on the Apple

Ios uses regular expressions to verify the mobile phone number of the password ID card In the project, we are verifying user input. The simplest method is to use regular expressions. the ios System also provides a convenient method, so that we can

Summary of the relationship between CAR and model in sizeclass, sizeclasscar I recently learned how to configure the autolayout constraint. We accidentally saw sizeclass yesterday. Let's take a look at the extensibility. Suddenly, I am not aware of

IOS development-multithreading NSOperation and NSOperationQueueNSThread can intuitively control thread objects, but it requires you to manage the thread lifecycle and thread synchronization by yourself, which is cumbersome to use and error-prone.

Course 1-record the path to Ios development and course 1 ios To learn a new language, we often follow international conventions to write a program output: hello, world. When learning C language, use the following program to print "hello, world ":