Block method for deprecated asynchronous get and post methods

1 #import "ViewController.h"2 #import "Header.h"3 4 @interfaceViewcontroller () <NSURLConnectionDataDelegate>5 6@property (nonatomic, strong) Nsmutablearray *DataArray;7 8 @end9 Ten @implementationViewcontroller One  A //Lazy Loading --(Nsmutablearray *) DataArray { -      the     if(!_dataarray) { -_dataarray =[Nsmutablearray array]; -     } -     return_dataarray; + } -  +  A- (void) Viewdidload { at [Super Viewdidload]; -     //additional setup after loading the view, typically from a nib. - } -  - #pragmaMark-get Asynchronous requests --(Ibaction) Getasynchronousrequset: (UIButton *) Sender { in      -     //1. Create a URL toNsurl *url =[Nsurl Urlwithstring:get_url]; +      -      the     //2. Create a request *Nsurlrequest *request =[Nsurlrequest Requestwithurl:url]; $     Panax Notoginseng      -     //3. Linked Servers the     //Method One: Block method implementation +     //first parameter: Request Object A     //second parameter: Thread queue the[Nsurlconnection sendasynchronousrequest:request queue:[nsoperationqueue Mainqueue] completionHandler:^ ( Nsurlresponse * _nullable response, NSData * _nullable data, Nserror *_nullable Connectionerror) { +         //response is the interface information that is carried -         //data is requested, and the following will be used $         //connectionerror Error message $         if(Connectionerror = =Nil) { -              -             //4. Parsing theNsdictionary *dic =[nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments Error:nil]; -             WuyiNSLog (@"%@", DIC); the              -             //first the child thread parsing data, and then refresh the UI in the main thread Wu         } -          About     }]; $    - } -  -  A #pragmaMark-post Asynchronous requests +-(Ibaction) Postasynchronousrequset: (UIButton *) Sender { the      -     //1. Create a URL $Nsurl *url =[Nsurl Urlwithstring:post_url]; the      the      the     //2. Create a request theNsmutableurlrequest *mutablerequest =[Nsmutableurlrequest Requestwithurl:url]; -      in      the     //2.5. Set Body the     //Create a connection string (this content is labeled in the future development of the interface document) AboutNSString *datastr =Post_body; the      the     //encode a connection string "This step must not be forgotten." theNSData *postdata =[Datastr datausingencoding:nsutf8stringencoding]; +      -     //set the request format to POST request "Post must be capitalized here" the[Mutablerequest Sethttpmethod:@"POST"];Bayi      the     //Set the request body (body) the [Mutablerequest Sethttpbody:postdata]; -      -      the     //3. Linked Servers the     //Method One: Block method the[Nsurlconnection sendasynchronousrequest:mutablerequest queue:[nsoperationqueue MainQueue] completionHandler:^ ( Nsurlresponse * _nullable response, NSData * _nullable data, Nserror *_nullable Connectionerror) { the          -         if(Connectionerror = =Nil) { the             //4. Parsing theNsdictionary *dic =[nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments Error:nil]; theNSLog (@"%@", DIC);94         } the     }]; the      the}

Block method for deprecated asynchronous get and post methods