kotlin ios development

1. Reference countingWhat are reference counts,Reference counting can effectively manage the object life cycle, it can help us to record how many pointers an object has, and make good memory management!!Example:Suppose in an office there is only one lighting equipment, the first person to enter the work to turn on the lights, and then continue to come in two people, if we do not remember how many people in the office now, and the first person to leave the lights directly off, will lead to anothe

FMDB for iOS development and fmdb for ios developmentIOSDevelopment DatabaseFMDB　　1.Introduction Purpose: If you need to save a large amount of complex data, use a database, such as a pass test item. Common databases: (1) Microsoft SQL Server 2000/2008, which is widely used by SMEs (2) Oracle is complicated and large enterprises use more (3) Mysql database, many

Tips for iOS development and tips for iOS developmentThe background color of the system navigationBar needs to be modified during code writing, at first, I used barTintColor to modify it, but I couldn't help it. When the system clicked the button, there was a rendering highlight effect. After a long time, I didn't achieve what I wanted, finally, I gave up using t

Time in iOS animation development, ios animation DevelopmentOverview In an animation, we specify the animation duration. For example scaleAnimation.duration = self.config.appearDuration So how is this time defined? Is it absolute time?Hierarchical Time Structure The display position of a layer on the screen is defined based on the position of the parent layer and

:#warning code's not finished.can help us to quickly locate the codeIv. use of code blocksFor frequently used blocks of code, you can save it as a block of code and set the prompt for fast encoding.Make appropriate edits to a block of codeUse After setting the prompt effect:Five, print content view (rewrite description method of skill)code example:-(NSString *) description{ //contains the object type name, and the object's pointer address return [NSString stringwithformat:@ "Tips:If you wa

:#warning code's not finished.can help us to quickly locate the codeIv. use of code blocksFor frequently used blocks of code, you can save it as a block of code and set the prompt for fast encoding.Make appropriate edits to a block of codeUse After setting the prompt effect:Five, print content view (rewrite description method of skill)code example:-(NSString *) description{ //contains the object type name, and the object's pointer address return [NSString stringwithformat:@ "Tips:If you wa

The focus and specific usage of each project on GitHub, including features, UI, database, automated testing, programming tools, and more, read it and call yourself "proficient in iOS development"? The Https://github.com/syedhali/EZAudio is based on core audio and facilitates real-time, low-latency audio processing and visualization of iOS and OSX audio visual

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Basic knowledge of IOS development-navigation and basic knowledge of ios 1: Basic knowledge of IOS development-fragment 1 A: interchange between NSString and NSInteger B: basic types cannot be stored in Objective-c integration. For example, int string float can be stored on

problem in previous IOS development. But with the advent of IOS extensions (such as Notification Center extensions or Action extensions), you may now need to include the same. A in the app ontology and in the extended binaries, which is unnecessarily repetitive. Finally, the static library can only be loaded with the application binary, and the dynamic frame d

original articles, welcome to share, without permission, not reproduced;All rights reserved, infringement must be tracedThe development environment uses the latest stable software so far: Mac OS X Lion 10.7 + Xcode 4.1 The current Xcode 4.2 preview version has also been released, it is said that the modification method is similar to 4.1, only changed one line of code, please refer to the second article of the reference article. This article still take

The functions of delegate, notification and KVO are similar, so how do you choose these methods in actual programming? When developing iOS apps, we often encounter a common problem: how to communicate between controllers without too much coupling. There are three different modes of application in iOS to achieve this kind of communication: 1. Entrust delegation; 2. Notification Centre Notification Center;

app to make a comprehensive review of the. App bundle to understand what is really needed. In a program, you will often include additional files, such as the Readme, which will never be used. Split the data out of the code Stripping all resources (such as long strings) from your code and depositing them in an external file reduces the size of the final file downloads because they are better compressed. (Refer to the full description in the iOS app

layer is what. Information systems layer, in terms of iOS, its sources are divided into: local and network. Local data can be placed in a file or in a database, and the current iOS local database uses SQLite3. A network can be a cloud service, or it can be a generic Web service. Layered based on the same project Architecture has a real meaning for our iphone and ipad

A brief review of quartz2dOne, what is quartz2d Quartz 2D is a two-dimensional graphics engine that supports both iOS and Mac systems ⼀ Quartz 2D can complete the work: Drawing graphics: line \ triangle \ Rectangle \ Circle Arc etc. Draw text Drawing \ Generating pictures (images) Read \ Build PDF Screenshot \ Crop Picture Customizing UI Controls Ii. the value of quartz2d in iOS

Anychat Mobile Video development kits are for integration or software developers to use for mobile video-related product development and system integration. Development package to provide mobile phone audio and video capture, coding, compression, audio and video transmission functions, through the docking with the back-end server, priority Peer-to-peer Communica

version of the same process, click Development and then click on the upper right corner of the plus Will enter the interface of which configuration profile to choose: We are now testing, so choose the "IOS app Development" option, and in the following distribution release options There are two options, "app Store" andAd hoc, you can select the options you

IOS Simulator function introduction about Xamarin IOS developmentIOS Simulator function introduction about Xamarin IOS development Functions of iOS Simulator In Figure 1.38, the model similar to a mobile phone is iOS Simulator. If

Use of the iOS Development Certificate and configuration file, and the ios certificate configuration filePrerequisites As we all know, to develop iOS applications, you must have an iOS certificate and Provisioning Profiles: 1. What is an

Build widgets for iOS development and build widgets for iosSource: Chen Kai's blog at jianshu (@ chenkaiHome) Welcomes the original article to bole headlines With the update of up to 4000 APIs in the iOS 8 system, there is also the Today Extension. for iOS, with Today Extension, developers can use the access points pro