qooapp ios download

Network Programming for iOS development-use NSURLConnection to implement resumable download of large files + use an output stream instead of a file handle, and use nsurlsession for resumable upload This article explains network programming in the previous iOS development-using NSURLConnection for resumable download of

iOS Development Network chapter-Multi-threaded breakpoint DownloadDescription: This article describes multi-threaded breakpoint downloads. The project uses Apple's own class to enable multiple threads to download a larger file at the same time. Because the implementation process is more complex, the complete code is posted below.Implementation ideas: Download sta

IOS development practices-cell download image (custom NSOperation) The image downloading operations in the previous article are all placed in blocks. When complicated operations are encountered, a bunch of code is put in blocks. Obviously, this is not a wise choice, and the code looks bloated. Therefore, place thread operations in custom NSOperation. Step for customizing NSOperation: Inherit NSOperation and

iOS Development Network Chapter-File download (four • Pause and resume)One, Range simple descriptionYou can specify the size of each packet to be downloaded from the network by setting the request header rangeRange Examplebytes=0-499 from 0 to 499 of the first 500 bytesbytes=500-999 from 500 to 999 of the second 500 bytesbytes=500- All bytes since 500 bytesbytes=-500 last 500 bytesbytes=500-599,800-899 Spec

Abstract: 1:ios encapsulates gcd with an abstract class nsoperation, making iOS multithreading easier and easier to use;2: Time-consuming operations are given to child threads to complete, the main thread is responsible for UI processing, prompting the user's experience2: Custom operation inherit from nsoperation, download picture in sub-thread;3: Ensure that ima

download of the picture already exists//if there is a waiting line (intercept two downloads)//if not presentEncapsulation operation and added to the queue (for first download) nsblockoperation *download = [Self.operations ObjectForKey:appM.icon]; if (download = = nil) {//If the operation does not exist//encapsulation

iOS Development Web Chapter-File download (two · reasonable)One, side download, side write1. IdeasAppend the downloaded data to the end of the file until all the data has been downloaded.1. When the server is connected, create an empty file into the sandbox Nsfilemanager (file management Class)2. Create a file handle to write data3. After receiving the data retur

cached on disk (this is not recommended for download to memory)* / sdwebimagecachememoryonly = 1** can be progressively downloaded, the displayed image is progressively in the download. Show only one full download of the image, the image slowly showing the kind of---can not set the default image* /sdwebimageprogressivedownload = 1** Even the image aspect of the

Introduction to iOS Web data download and JSON parsingIn this article, I'm going to show you how to use nsurlconnection to download data from the Web, parse the JSON data format, and display the asynchronous download display of data and images.Points of knowledge involved: Nsyrlconnection Asynchronous

Cat Share, must boutiqueFirst look at the effectCode Learning Address:Cat Learn iOS (v) UI 360 etc Download Manager nine grid UICat Learn iOS (v) UI 360 etc Download Manager nine grid UIhttp://blog.csdn.net/u013357243/article/details/44486609: http://download.csdn.net/detail/u013357243/8516817PS1: There are those who w

IOS development-NSURLSession for resumable downloadNSURLSession 1. Procedure 1> obtain the NSURLSession object 2> create a Task using the NSURLSession object 3> Start the task ([Task resume]) 2. Obtain the NSURLSession object 1> [NSURLSession sharedSession]2> NSURLSessionConfiguration *cfg = [NSURLSessionConfiguration defaultSessionConfiguration];self.session = [NSURLSession sessionWithConfiguration:cfg delegate:self delegateQueue:[NSOperationQueue ma

Cisco router IOS upload and download 1. Prepare a console line and a network cable. The connection cable is connected to the console port of the computer. The network cable is connected to the computer and the F0/0 port of the router. (Only F0/0 can be used. The router has no system, the IP address configured for the router is for port F0/0 by default ). 2. Configure the IP address of the computer, such as

iOS Development Network Chapter-File download (four • Pause and resume)One, Range simple descriptionYou can specify the size of each packet to be downloaded from the network by setting the request header rangeRange Examplebytes=0-499 from 0 to 499 of the first 500 bytesbytes=500-999 from 500 to 999 of the second 500 bytesbytes=500- All bytes since 500 bytesbytes=-500 last 500 bytesbytes=500-599,800-899 Spec

Catalogue iOS () multi-thread network-GCD download and merge image_queue group usage, iosgcd CAT/CAT sharing, must be excellent For Original Articles, please reprint them. Reprinted Please note: Yan Nai-yu's blogHttp://blog.csdn.net/u013357243? Viewmode = contentsMerge images (image watermarks) first method Effect Implementation: Ideas:1. Download two images: la

Here we only discuss the General app under the iOS platform, we can write our own code to implement the resume downloads, explained below.Resume an HTTP download is not difficult, but you must understand some of the key HTTP concepts: Entity tag: This is a unique identifier provided by a server that represents a specific version of a specific resource, and if someone changes the resource on the ser

Sometimes we need to scan QR code download on the homepage of XX website, then how to do it in iOS development.Let me give you some answers, this is also in the recent work of the part, on the internet to learn some.Here is a breakdown of the steps for everyone:1.Plist and IPA filesApp Packaging I will not elaborate, this online tutorial a lot of, remember the real machine under the pack. (xcode->product->a

1 iOS multi-image download, download images in cell, Cache optimizer. 2 3 (App.icon is the image address)4 5 //Take the picture out of the memory cache first6UIImage *image =Self.images[app.icon];7 if(image) {//There are pictures in memory8Cell.imageView.image =image;9}Else{//no pictures in memoryTen //Get library/caches folder OneNSString *cachespath

Objective A recent project requires iOS and Android to use a two-dimensional code to allow the scanned machine itself to identify the operating system implementation to jump to the corresponding download link. For example, the iphone using micro-letter scanning let him jump to the App Store download page, the Android machine using micro-mail scanning directly ju

picture data = [NSData Datawithcontentsofurl:[nsurl URLWithString:app.icon]]; cell.imageView.image = [UIImage imag Ewithdata:data]; Save in memory Self.imgcache[app.icon] = cell.imageView.image; Write the picture data to the sandbox [data writetofile:file atomically:yes]; } return cell; } These two methods are the methods that UITableView must implement The first is to return the amount of data, nothing to say The second one is binding data The detailed process looks at the following figu