IOS

[Reading Notes] iOS-object initialization, Reading Notes ios- 1. Allocate objects. Allocation is the process of the birth of an object. The best time is to get a piece of memory from the operating system and specify it as the location of the

UIStepper, iosuistepper // Initialize stpper with a fixed sizeUIStepper * step = [[UIStepper alloc] initWithFrame: CGRectMake (100,100, 0, 0)];// Set the minimum and maximum valuesStep. minimumValue = 1;Step. maximumValue = 30;// Set the value

IOS --- implement UIViewController redirection in the Execution Code of the NSObject subclass In iOS development, to achieve jump between UIViewController, you can use the navigationController pushViewController or the UIViewController

Chapter 52 API and API design notes and api52 notes Chapter 52 API and API design notes Article 15th: Use a prefix to avoid namespace conflicts Objective-C does not have the built-in namespace mechanism in other languages. In view of this, we should

IOS development-BaseModel, ios-basemodel During software development, various Data needs to be parsed, such as the most basic plist file, json Data downloaded from the network, XML webpage Data, and important Core Data. Next I will share a method to

Paper tail ----- Quartz2D-draw rich text and images ., We generally use the drawing provided by UIKit to draw some text and images. The bottom layer of the method that UIKit provides for us to draw images is also divided into four steps. Therefore,

IOS development error: attempt to dismiss modal view controller whose view does not currently appearI encountered a problem just now. Now I want to record it here. If you have any problems, you can quickly find the cause and share it with me. In the

IOS --- use RestKit for simple interaction with RESTful web Servers RestKit is an Objective-C framework designed for iOS. It aims to interact with RESTful web services more easily and quickly. It is based on a powerful object ing System and combines

IOS handles keyboard occlusion TextField and TextView ProblemsIOS handles the problem of keyboard occlusion TextField and TextView. The problem of keyboard occlusion is handled independently in each controller, today, when I was working on a project,

IOS --- jump between apps In iOS devices, the interaction between apps is mainly achieved through the openURL of UIApplication.Take Instagram (SDK not provided) as an example: //// ViewController.m#import ViewController.h@interface ViewController ()

Method Swizzling and methodswizzling I. Concepts Method allocation: Objective-C is the runtime language, that is, the method to be called must be parsed at runtime. We can also change the sub-name at runtime. In this way, we neither need to view the

IOS study notes, ios learning materials 1. When prepareForSegue is executed, all views of the target controller are not created yet. In this case, the operations on the objects are invalid. The required values should be assigned in the viewDidLoa

Design + Code (iOS), designcodeios This set of iOS learning materials includes three parts: Learn Sketch 3, Learn iOS Design, Build an iOS app, and Design With Swift. Learn Sketch 3: Use of the Sketch Tool Click to download Learn iOS Design:

IOS study notes, ios learning materials 1. Three Methods of listening: 2. When you delete the original ViewController on the storyboard and add the NavigationController, It is not automatically set to initial View Controller. You need to manually

UITabbar (similar to Sina Weibo Demo)   UITabBarController and UINavigationController are the navigation modes selected by most apps. UITabBarController's UITabBar is the UI part presented to users. Therefore, it is very important to understand its

Cocoa Design Patterns, cocoapatterns Book Description This is the Rough Cut version of the printed book.Much of the technology embodied by Apple's Cocoa software development frameworks have been in commercial use since 1988, and in spite of many

IOS Today Extension/widget programming note From iOS8, in the drop-down "today", applications can add their own widgets, which are like this: This is called a widget in Android, but in iOS we call it Today Extension, because it is one of many types

IOS-simple filter effect implemented using GPUImage GPUImage is an open-source iOS framework based on GPU image and video processing. Because GPU is used to process images and videos, the speed is very fast. in addition to the speed advantages,

Colours-color library, including 100 predefined colors and methods, and colour100 Introduction Colours-color library, including a variety of 100 predefined colors and methods, can simplify color-related development. Project homepage: Colours Latest

[Reading Notes] comparison between iOS-NSDictionary and NSArray, nsdictionarynsarray Sometimes, why not store arrays and then query the values in the arrays? The dictionary (also known as a hash or associated array) uses an optimized storage method