IOS

icloud document storage programming is more complex relative to key value data stores, involving customizing document classes, obtaining icloud document catalogs, locating documents in ubiquity containers, saving documents, and resolving document

There are two simple ways to read picture data on the iphone: UIImageJPEGRepresentation and Uiimagepngrepresentation. The UIImageJPEGRepresentation function requires two parameters: a picture's reference and a compression factor.

What do you need to pay attention to when you want to fit two different platforms? Today's article summarizes 6 places to learn, including icons, screen density dimensions, design, etc., to collect! 　　1. Do not convert You should not

Today's users are becoming more and more demanding on maps, and more and more emotionally involved. The writer Sacha Greif, a designer from Paris, France, when everyone still praises the map data and service functions of the iOS version of Google

8 Kinds of iOS acquisition device Unique identification method, hope to be useful to everyone. UDID UDID (Unique Device Identifier), the unique identifier for the IOS device, is a 40-bit hexadecimal sequence (jailbreak devices can change the

First, preprocessing commands he is not a constant!!!! Let's look at a piece of code #define @ "Avatar" if (false) { #define AVATAR @ " NSLog"} (Avatar); How much does this code output, we define "avatar" for 60, and then redefine

In "Hello World Map", we have successfully loaded a map. Those who have never been familiar with GIS have to complete their homework. At least they need to understand the basic concepts of spatial objects and data models. There is a map document (*.

Using Documents to download and manage video tutorials on the iPhone The Apple mobile phone does not support file management. For those who need to process Documents or organize files on the Mobile End, having no file management is absolutely

Examples of small programs, super-loaded instances, and small program instances Preface Before you start developing the application number, take a look at the official "mini-programs" tutorial! (The following content is from the official "applet"

IOS open-source project weekly report 0209, ios open-source project 0209 The seventh release of the iOS open-source project weekly by OpenDigg is coming. Our iOS open-source weekly report combines the high-quality open-source iOS projects that

[Study Notes] [C Language] logical operators, learning notes logical operators Sometimes, we need to execute a certain piece of code when multiple conditions are set up at the same time. For example, a user can execute the login code only after

Ios navigation controller UINavigationController, controller a redirects (push) to B, B redirects (push) to c, but c returns (pop) to   Ios navigation controller UINavigationController. After controller a redirects (push) to Controller B, controller

[Swift learning] Swift programming tour --- ARC (20), swift --- arc Swift uses automatic reference count (ARC) to track and manage the memory used by the application. In most cases, this means that in the Swift language, memory management is "still

IOS development: how to package and upload an App project to the App StoreStep 1: log on to the Apple developer website Apple DeveloperStep 2: enter? Member Center2.1 click Member Center 2.2 log on to the developer account 2.3 enter the certificate

IOS filter Image ProcessingAbstract:This article describes how to use the OS X and iOS Image processing frameworks Core Image. It is very suitable for beginners to learn how to create and use iOS built-in filters through Core Image. Although the

Author: Sun Dongfeng)   Java provides a lot of convenience for programmers because it supports multiple threads. In fact, it also supports multi-thread programming in iphone development, and it is no more troublesome than java. In this article, I

[Code Note] Some functions used to judge the iphone, take note of the iphone Code: # Import "RootViewController. h "// Add the header file # import" sys/utsname. h "@ interface RootViewController () @ end @ implementation RootViewController-(id)

Obtain time information in NSDate, in years, months, weeks, days, hours, minutes, seconds, and milliseconds: Note: The first method cannot obtain information in milliseconds, and the second method is used to obtain information in milliseconds. [Cpp]

How to get the current IP address of the mobile phone in IOS, and ios get the current ip Address There are many similar posts on the Internet. After searching for information, I think the following method is the simplest, You can directly drag the

Chapter 2 route protocol Reading Notes and Chapter 3 route protocol Chapter 2 route protocol Reading Notes In a complex network structure, data needs to be sent to the target host through a reasonable route. The route control module determines the