Object-c SQLite database memory overflow problem, object-csqlite

Object-c SQLite database memory overflow problem, object-csqlite An application is being developed recently. There are many places in the application that use the SQLite database. Some downloaded content is cached in the SQLite database. A serious

IOS development-Stage 2-operations on cells (5) single choice, ios Stage 2

IOS development-Stage 2-operations on cells (5) single choice, ios Stage 2 Set tableView to achieve the effect of single choice as shown in:   Ideas: 1) In the method called by the selected row, modify the settings of the last selected row, set

IOS development-Stage 4-Implementation of the push server, and stage 4 of ios

IOS development-Stage 4-Implementation of the push server, and stage 4 of ios   After writing push notification to get device token and get device token, you need to send the token string to the application server, that is, the provider. The

IOS study notes I understand the OC-proxy mode, 2015-03-27oc-

IOS study notes I understand the OC-proxy mode, 2015-03-27oc- Case 1 KCButton. h //// KCButton. h // Protocol & Block & Category /// Created by Kenshin Cui on 14-2-2. // Copyright (c) 2014 Kenshin Cui. all rights reserved. // # import @ class

C language basics of iOS development Lesson-07 structure class notes and exam exercises, ioslesson-07

C language basics of iOS development Lesson-07 structure class notes and exam exercises, ioslesson-07 1 /////////// Lesson 07 structure class notes ///////// // 2 // struct function: 1. is a custom data type, which can be used to define variable 3 //

IOS development-Stage 3-Sina Weibo (1) documentation, stage 3 of ios

IOS development-Stage 3-Sina Weibo (1) documentation, stage 3 of ios 0 https://itunes.apple.com/cn/app/you-dao-ci-dian/id491854842? Mt = 12 id1_54842 this is also called the Apple ID, which is different from the apple id used for downloading an

IOS: Build and use of UICollectionView

IOS: Build and use of UICollectionViewThe first part is about the three protocol methods. The usage of the first two is similar to that of tableView, and the third is the protocol of the end view of the header view. (For the end view of the

IOS variable definition and usage

IOS variable definition and usage Let's take an example. Create a new ViewController class. Xcode automatically generates two files for us: ViewController. h and ViewController. m. 1. member variables   @ Interface ViewController: UIViewController {/

IOS: converts a json string to a dictionary and a json string to a dictionary.

IOS: converts a json string to a dictionary and a json string to a dictionary. /*! * @ Brief converts formatted strings in JSON format to dictionaries. * @ Param jsonString string in JSON format * @ Return returns the dictionary. */ + (NSDictionary *

IOS --- simple use of NSCache

IOS --- simple use of NSCacheNSCache NSCache is a cache class officially provided by Apple. Its usage is similar to that of NSMutableDictionary. It is used in AFNetworking and SDWebImage to manage cache. NSCache Automatically releases some objects

How to create multiple sub-projects in iOS

How to create multiple sub-projects in iOS Here, we will record how to create multiple sub-projects in iOS. First, create two static databases. Add the static library to the project:   Add static library If the header file of the

Implementation of iOS message push mechanism

Implementation of iOS message push mechanism The working mechanism of iOS message push can be summarized as follows:   Provider refers to the Push server of an iPhone software. APNS is the abbreviation of Apple Push Notification Service and is the

IOS development-Stage 4-memory management, ios Stage 4

IOS development-Stage 4-memory management, ios Stage 4 Deep copy and light copy   Only objects that implement the NSCoping protocol can be copied. The NSCopy Protocol is required for copying custom objects. Whether it is a deep copy or a shallow

UItabBar highlighted during IOS Customization

UItabBar highlighted during IOS CustomizationPreface: The company's project needs to customize a highlighted TabBar in the middle and find a reference code on github (although it was four years ago, it is still very useful for reference ). URL:

IOS-Use of AVAudioSession-playing music in the background, ios-avaudiosession

IOS-Use of AVAudioSession-playing music in the background, ios-avaudiosession1. Preface • AVAudioSession is a singleton that can be directly used without instantiation. AVAudioSession plays an important role in various audio environments. •

IOS MVC design mode and iosmvc Design Mode

IOS MVC design mode and iosmvc Design Mode Notes for using property: Copy: NSString Strong: general object Weak: UI control Assign: Basic Data Type PS: the first is the most basic model, which will be improved later. Reasons for replacing the

IOS development -- Stage 2 -- Communication -- JSON system parsing, ios -- json

IOS development -- Stage 2 -- Communication -- JSON system parsing, ios -- json JSON system parsing:   1. Create the Request Path and URL;   2. Construct a request based on the URL. If NSMutableURLRequest is used for POST, the NS variable URL

IOS development-Stage 4-debugging, uploading applications, pushing, and ios real machines

IOS development-Stage 4-debugging, uploading applications, pushing, and ios real machines   Differences between Apple's three accounts: 1. Individual developer accounts are directly mounted to Appstroe (Apple will charge an annual fee ); 2. The

Ios multi-thread operations (11)-advanced NSOperation operations

Ios multi-thread operations (11)-advanced NSOperation operationsNSOperation can call the start method to execute tasks. By default, NSOperation is executed synchronously. If you add NSOperation to NSOperationQueue, the system automatically performs

Clear iOS app Cache

Clear iOS app CacheClear iOS app cache clear Cache dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) , ^{ NSString *cachPath =

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