IOS

App Store revenue distribution is extremely unbalanced, but independent developers still have the opportunity Recently, Marco Arment, a famous iOS developer, shared the sales of Overcast, with many statistics and charts. Overcast has been quite

Pointer usage in Swift Apple expects pointers in Swift to minimize their chances of appearance. Therefore, pointers in Swift are mapped to a generic type and abstract. To some extent, this makes it difficult to use pointers in Swift, especially

How does iOS determine whether a string is a Chinese character or a letter? // If the entered nickname is a letter, determine whether it is qualified If (self. nickNameText ){ For (int I = 0; I Nsange range = NSMakeRange (I, 1 ); NSString *

IOS-memory management is so simple 2 Civilization and comments are respect for yourself and encouragement to scholars. Thank you.IOS-memory management is so simple 2 The main content discussed today is copy and mutableCopy. 1. Use copy and

IOS development-monitoring network changes Generally, you need to obtain the data update interface through the network on some APP interfaces. By setting up a network status listener, an application automatically refreshes page data after the

Introduction to MVVM Architecture Design and team collaboration in iOS developmentI want to write this blog today to serve as a reference. I want to share my thoughts with you and learn from each other. I hope you can criticize and correct the

IOS crazy explanation-tableview editing, adding, and deleting//// VkoWLAccountVC. m// PocketUniversity//// Created by long on 15-1-14.// Copyright (c) 2015 WLong. All rights reserved.//# Import VkoWLAccountVC. h# Import VkoWLMoreTableViewCell. h#

Basic ios entry-malloc Method Char m; Scanf ("% c", & m); // a space is added to the front to remove spaces and press Enter. NSLog (@ "the character is % c", m ); The above program is familiar with two methods: one input and one output, but if I

IOS development-Table storeAccording to the above concept, the page layout is about a 3*3 9-square grid. It is generally used to select a number exercise, and there is no special way to get it done. In the Demo implementation, the above interface is

Use NSURLSession and NSURLConnection to obtain the MIMEType and nsurl of the file. Both NSURLSession and NSURLConnection are Apple's built-in classes for network requests. NSURLSession was launched after iOS 7.0 to replace NSURLConnection. The

UIScreen and ios8UIScreen in ios8Java code Let orientation: UIInterfaceOrientation = UIApplication. sharedApplication (). statusBarOrientation Println ("Currently landscape:" + (orientation = UIInterfaceOrientation. LandscapeLeft | orientation =

Login verification for ios We can use the third framework AFNetworking to communicate with the server using its post method. If the userId returned by the server is 10, the operation succeeds. If the returned userId is 11, the user name or password

Ios presentViewController: black screen after destinationView jump There is a button in viewA. After clicking it, it will jump to another page. Using the following code, viewB will be black and nothing will be

Request to refresh the UI after a network request A problem occurred while creating the project. The synchronization request cannot refresh the interface. Original assumption: In the synchronous request method, add a chrysanthemum before

IOS development-multi-Thread programming technology (Thread, Cocoa operations, GCD), multi-Thread programming cocoa Multi-threaded programming is widely used in software development. I believe that multi-threaded tasks are no longer unfamiliar to

[Use Xcode, use xcodeA. Procedure1. apply for a developer account 2. register the machine as the development machine (1) generate the certificate request file (2) Upload the request file (3) generate the cer Certificate file :**. cer (4) download

[IOS UI advanced, iosui advancedA. generation and transmission of eventsAfter a touch event occurs, the system adds the event to an event queue managed by UIApplication.UIApplication extracts the first event from the event queue and distributes the

Explanation of NSBundle, nsbundle First, understand the concept. When an app is installed on a mobile phone or simulator, the entire project is packaged into a folder. If you need to find a specific file in the folder, NSBundle is used in the

[IOS UI advanced, iosui advancedA. Gesture Recognition provided by the system1-(void) testTap {2 // create gesture reader 3 UITapGestureRecognizer * tapRec = [[using alloc] initWithTarget: self action: @ selector (tapRun :)]; 4 tapRec.

IOS learning-positioning service 2 basic positioning1. What is positioning mainly? 1. Obtain location-related data 2. Obtain Location Information As a result, I thought of the sight targeted by the Anti-Terrorism elites: 2 ...... How to locate