IOS

1. Artifact calculates picture position function: Avmakerectwithaspectratioinsiderect () Through this function, we can calculate a picture placed in another view according to a certain proportion of the center display, may say I am more abstract,

The current development of the project for historical reasons are written in code UI, so judging equipment size has become an unavoidable task. This is how I judge the size at the moment. First, define an enumeration class that contains all the

Available categories to write a convenient to use + (Uicolor *) colorwithhexstring: (NSString *) color { NSString *cstring = [[Colorstringbytrimmingcharactersinset:[nscharactersetwhitespaceandnewlinecharacterset]] Uppercasestring]; String should

Nserror *error; NSString *textfilecontents = [NSString Stringwithcontentsoffile:[[nsbundle Mainbundle] pathforresource:@ "Mytextfile" oftype:@ "TXT"] Encoding:nsutf8stringencoding Error: & ERROR]; If There are no results, something went wrong

Objective-c, like the C language, provides standard macros that describe the current file, the number of lines in the source file, and the function information. The objective-c itself, however, also provides the associated class type. can be applied

One of the most important characteristics of mobile device reading software is to enlarge the reading area as much as possible, to do so, you must make the screen as much as possible to minimize the navigation, or even hidden, mobile browsers are

Navigation is always the play of product design, often 90% of the things in product design is doing navigation. The iphone has 3 out-of-the-box navigation modes, tile lists, tabs, and tree structures, each with different toolbars and controls. Three

1: The new shutdown interface 　2: New HDR Auto mode The new HDR Auto mode automatically chooses the best from the photos in HDR capture, but you can also choose to turn off the feature. 3: Button shape IOS 7.1 has added a

one, UI Controls Overview: 1, the framework UI elements are divided into 4 categories: A: Columns: The combination of State column and navigation bar; B: Content view: Apply the displayed content information, including the related

Flat style trend is mighty, children's shoes have time to come to the weekend, learn the flat style icon design ideas bar. Today's tutorial is to teach you to create an iOS 7 style icon, the tutorial is not difficult, skilled children's shoes can be

Use of assertions in iOS development-NSAssert (), iosnsassert   Link: http://blog.csdn.net/univcore/article/details/16859263 Assertion refers to the code used during development that enables the program to perform self-check during runtime (usually

Similar to the Spring framework to implement dependency injection in OC, springoc If you have used the Spring framework in Java EE development before, you must be familiar with dependency injection. Dependency Injection (DI: Dependency Injection) is

IOS custom UIView and iosuiviewIOS generally uses several methods to customize the UIView. 1. Custom View of the stored code of the inherited UIView 2. Use the custom View with xib and code 3. Save the custom View of xib (which does not require

Implementation of iOS timer NSTimer, CADisplayLink, and GCD3, and quartz Timer In the process of software development, we often need to execute a method after a certain time, or always execute a method according to a certain cycle. At this time, we

Obtain the application signature in the code. Obtain the application signature in the code. public void getSingInfo() { try { PackageInfo packageInfo = getPackageManager().getPackageInfo( "com.atguigu.p2p",

The implementation of Hybird data driver and Script driver in IOS, ioshybird Now, there are many articles on the Internet about Hybird. I have recently studied and shared them with you.What is Hybird technology? 1. It generally refers to a technical

IOS development: an example of Affine Transformation This blog is simple but practical. The example is still implemented using Swift3.0. This blog is an introduction to the next blog, because we will introduce some Extension commonly used in iOS

IOS (linker command failed with exit code 1) Error summary, ioslinker   From: http://blog.csdn.NET/hengshujiyi/article/details/21182813 Note: This error occurs when two files with the same name exist in the project. You only need to delete one file.

IOS (null), , nil problems, iosnilAbstract: Have you ever experienced something like or (null. I have already said this again. Today I will summarize the solutions to this problem. Some time ago, during the development process, some of the

Read Facebook POP Framework notes (1), facebookpop In this series of articles, I will primarily record my experience reading third-party code and try to analyze and dissect a framework independently. I have read some third-party code before, but in