nsurlsessionconfiguration-0202-Network

1 //2 //VIEWCONTROLLER.M3 //02-nsurlsessionconfiguration4 //5 #import "ViewController.h"6 7 @interfaceViewcontroller ()8 9 @endTen  One @implementationViewcontroller A  -- (void) Viewdidload { - [Super Viewdidload]; the     //additional setup after loading the view, typically from a nib. -      -      -     //Requirement: Use Nsurlsessionconfiguration to configure session +     /* - the flow of network requests: + 1. Construct Nsurl Connection Address A 2. Constructs the Nsurlrequest request object, which contains the request header and the request body information.  at 3. Construction Nsurlsessionconfiguration - 4. Constructing the Nsurlsession Session object - 5. Create a request task - 6. Send a network request -       -      */ in      -Nsurl *url = [Nsurl urlwithstring:@"Http://piao.163.com/m/cinema/list.html?app_id=1&mobileType=iPhone&ver=2.6&channel=appstore &deviceid=9e89cb6d-a62f-438c-8010-19278d46a8a6&apiver=6&city=110000"]; to      +     //Setting the Configuration object - //RequestCachePolicy: Setting the cache policy the //Networkservicetype: Set the type of Network service: network traffic, Internet telephony, voice, video. * //timeoutintervalforrequest: Setting the time-out period $ //httpadditionalheaders: Setting the request headerPanax Notoginseng //discretionary: For background requests, it takes into account the availability of WiFi and power - //allowscellularaccess: Is it allowed to use cellular data the      +Nsurlsessionconfiguration *config =[Nsurlsessionconfiguration defaultsessionconfiguration]; A      theConfig.timeoutintervalforrequest = the; +Config.allowscellularaccess =YES; -      $     //to create a session by using a configuration object $     //the process of listening to data download through Proxy protocol method -     /* - Agreement Inheritance Relationship: 3 compliance with 2,2 compliance 1, so 3 contains all 1, 2 method declarations in the Protocol the 1.NSURLSessionDelegate - 2.NSURLSessionTaskDelegateWuyi 3.NSURLSessionDataDelegate the      */ -Nsurlsession *session = [Nsurlsession sessionwithconfiguration:configDelegate: Self delegatequeue:[nsoperationqueue mainqueue]]; Wu      -     //The block can no longer be used to listen after the data is loaded using the proxy protocol.  AboutNsurlsessiontask *task =[Session Datataskwithurl:url]; $      - [Task resume]; -      -      A      + } the  - #pragmaMark-nsurlsessiondelegate $  the //This protocol method is called when a response header is received the- (void) Urlsession: (Nsurlsession *) session Datatask: (Nsurlsessiondatatask *) datatask didreceiveresponse: (NSURLResponse *) Response Completionhandler: (void(^) (nsurlsessionresponsedisposition)) Completionhandler { the      theNshttpurlresponse *httpresponse = (Nshttpurlresponse *) response; -      inNSLog (@"Statuscode:%li", Httpresponse.statuscode); the      theNSLog (@"%@", HttpResponse); About      the      the     //can continue loading and must be allowed before the response body data is loaded the Completionhandler (nsurlsessionresponseallow); +      -      the     /*nsurlsessionresponsecancel = 0, equivalent to [task Cancel] Nsurlsessionresponseallow = 1 Continue normal transmission nsurlsessionresponsebecomedownload = 2, turn Datatask into Downloadtask nsurlsessionrespo Nsebecomestream = 3 turn into StreamtaskBayi     */ the      the      - } -  the //This protocol method is called by the data in the response body each time a packet is received, and this protocol method may be called multiple times.  the- (void) Urlsession: (Nsurlsession *) session Datatask: (Nsurlsessiondatatask *) datatask didreceivedata: (NSData *) Data { the      theNSLog (@"Data:%li", data.length); -      the } the  the //This protocol method is declared in Nsurlsessiontaskdelegate, which is called when the task is loaded and the data is now transferred. 94- (void) Urlsession: (Nsurlsession *) session Task: (Nsurlsessiontask *) Task Didcompletewitherror: (Nserror *) Error { the      theNSLog (@"Network Request Complete"); the     98 } About  - @end

nsurlsessionconfiguration-0202-Network