ios file manager download

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

information [nsurlconnection sendsynchronousrequest:request returningresponse:response Error:nil]; Get file size self.totallength = response.expectedcontentlength;} -(Nsmutablearray *) singledownloads{if (_singledownloads = = nil) {_singledownloads = [Nsmutablearray array]; [Self getfilesize]; A long long size = 0; Number of downloads per pathif (self.totallength% Zymaxdownloadcount = = 0) {size = S

, (unsigned long) data.length);Tips:If get contains a range request header, the response is returned as a status code of 206 (partialcontent) instead of a (OK)7 , writing data to a file-(void) AppendData: (NSData *) data{Open cache fileNsfilehandle *FP =[Nsfilehandle FileHandleForWritingAtPath:self.cachePath];If the file does not exist, write the data directlyif (!FP) {[Data WriteToFile:self.cachePath Atomi

[IOS] File Upload note, ios note The APIS provided by the system can be used in iOS to upload and download files in two ways.NSURLConnectionAndNSURLSession. NSURLConnection is a method that has been in use for a long time, And NSURLSession is a new method. I. POST upload By

protocol, the configuration processI said, Baidu a lot, but when the configuration must let them understand, not casually get a self-signed digital certificate can be, Safari is impossible to verify through. So we have to go to a qualified CA agency to apply for a certificate, here is recommended http://www.startssl.com/This can be free to apply for a one-year certificate, of course, there are charges apply.The above 3 points is to make the Enterprise Edition

First, the problem descriptionTake the Coding IOS Client As an example of how to download an open source project on GitHub to a localGitHub Address:Https://github.com/Coding/Coding-iOSSecond, the problem analysisDepending on whether the project's git repository refers to a file in another repository , the Git repository is a git submodule sub-module, and there

:(NSString *)field;Create get and POST requests//Create a GET requestNSString*URLSTR = [@"Http://192.168.1.102:8080/Server/login?username=123pwd=123"Stringbyaddingpercentescapesusingencoding:nsutf8stringencoding];Nsurl*url = [NsurlURLWITHSTRING:URLSTR]; Nsmutableurlrequest *request = [Nsmutableurlrequest Requestwithurl:url];//Create POST requestNSString*URLSTR = @"Http://192.168.1.102:8080/Server/login";Nsurl*url = [NsurlURLWITHSTRING:URLSTR]; Nsmutableurlrequest *request = [Nsmutableurlrequest

Here is the NSURLConnection proxy request download, and is the progress, the UI can be refreshed in real-time, as NSURLConnection to how to request, and there are several request methods please see Nsurlconnection request introduction, here we download a book as an example, the following is its address ( This is in the Baidu cloud inside, the link is someone else encrypted, all relatively long)http://d.pcs.

An article about the ASP. NET Web API download file, I've written a similar article before, see: The ASP. NET (C #) Web API downloads files to an on-premises instance via a file streamBased on this article, this paper provides the download of bytearraycontent and the ability to dow