IOS UISearchController and iosuisearchbar

IOS UISearchController and iosuisearchbar   In iOS9, UISearchDisplayController has been replaced by UISearchController. The search box is a common control. Assume that we want to meet the requirements, generate 100 "numbers + three random letters",

Simple Application of NSLayoutConstraint, nslayoutconstraint

Simple Application of NSLayoutConstraint, nslayoutconstraint UIView *topView = [[UIView alloc] init]; topView.backgroundColor = [UIColor redColor]; [self.view addSubview:topView]; topView.translatesAutoresizingMaskIntoConstraints = NO;

NSLayoutconstraint and nslayoutconstraint of iOS Chinese API

NSLayoutconstraint and nslayoutconstraint of iOS Chinese API AutoLayout provides developers with a layout method different from the traditional layout method specified by the UI element location. In the past, both drag and drop in IB and write in

UIApplication, iosuiapplication

UIApplication, iosuiapplication 1. Perform some application-level operations (such as displaying numbers on the application icons ): -(IBAction) changeAppNum {UIApplication * app = [UIApplication sharedApplication]; // 1. Set whether to display the

You can create controllers in several ways.

You can create controllers in several ways. How to Create a controller: Create directly: XZOneViewController * one = [[XZOneViewController alloc] init];One. view. backgroundColor = [UIColor redColor];Self. window. rootViewController = one;  

IOS UITabBarController, iostabbarcontroller

IOS UITabBarController, iostabbarcontroller UITabBarController and UINavigationController are almost standard for iOS apps. The UITabBarController sub-bar (Label bar) controller, like the UINavigationController navigation Controller, is a controller

OC and OC

OC and OC Summary:In oc, We need to compile a class. First, we need a. h header file and a. m implementation file. Generally, the classes we create inherit the root class, because the root class helps us implement a lot of practical methods, and the

[IOS] font size conversion for iOS

[IOS] font size conversion for iOS 1. px AND pt ConversionPx: the unit of relative length. Pixel (Pixel ). (PS font) Pt: the absolute length unit. Point ). (IOS font) The formula is as follows: Pt = (px/96) * 72. 2. font conversion 1in = 2.54 = 25.

Objc writes data to the plist file of the iOS real machine

Objc writes data to the plist file of the iOS real machine However, this does not work for the real machine, because in the real machine environment, the Resources folder of the App in Xcode is not writable. therefore, when the App runs for the

IOS HLS streaming media file cracking-only sound and no image

IOS HLS streaming media file cracking-only sound and no imageHTTP Live Streaming (HLS) The above is the official column page. Download the corresponding toolkit, which has a mediafilesegmenter. The parameters are as follows:   Sudo

IOS development-use delegate for message transmission

IOS development-use delegate for message transmission In iOS development, passing messages or data between interfaces is the most basic requirement. We can use many methods to achieve this requirement, for example, expose an attribute in the header

IOS --- use XCTest for unit testing

IOS --- use XCTest for unit testing Test-driven development (TDD) is a popular development concept. XCTest is an Apple-encapsulated Unit Test Library. The process of using XCTest for unit testing is relatively simple. This blog only briefly

[IOS development] AutoLayout (Code-only) and iosautolayout

[IOS development] AutoLayout (Code-only) and iosautolayout For AutoLayout, it was first introduced from iOS6.The main function is to use constraints to relatively layout the view to adapt to the transformation of different screens. A large amount of

IOS Crash debugging usage and tips

IOS Crash debugging usage and tips  During iOS development and debugging and after launch, the program Often crashes. A simple Crash is better to say that we need to parse the Crash file to analyze the Complicated Crash. parsing the Crash file is

IOS development Note 7: Text, UI interaction details, two animation effects, etc., iosui

IOS development Note 7: Text, UI interaction details, two animation effects, etc., iosui Text mainly summarizes some issues related to UILabel, UITextField, UITextView, UIMenuController, and UIWebView/WKWebView. UI details mainly summarize some

IOS development-use MBProgressHUD to increase user experience (2)

IOS development-use MBProgressHUD to increase user experience (2) In the previous blog "iOS development-using MBProgressHUD to increase User Experience", I used MBProgressHUD encapsulated by others for loading prompts, which is quite convenient.

Experience-use const and macro in PCH

Experience-use const and macro in PCHMost of the time, due to the development needs, we often need to define some variables used in the entire project in pch. In general, in the previous development process, we are all used to writing a macro

Use Carthage (Replacement of cocoapods), carthagecocoapods

Use Carthage (Replacement of cocoapods), carthagecocoapods 1. Use homebrew to install Carthage brew intsall carthagePs: If Homebrew is not installed, enter the portal Homebrew. By the way, you can select Simplified Chinese. 2. Go to Project

Basic Swift syntax (1): Basic swift syntax

Basic Swift syntax (1): Basic swift syntax Swift is a new programming language used to write iOS and OS X applications. Swift combines the advantages of C and Objective-C and is not limited by C compatibility. Swift adopts a secure programming mode

Differences between class methods and object Methods

Differences between class methods and object Methods It can be called by class name or an instantiated object name.The instance method belongs to a specific instantiated object and can only be called by the object name.The class method is like a

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