sendSynchronousRequest：deprecatedResponse已弃用

我有一个Xcode应用程序，我正在更新到最新的iOS。 我现在注意到在构建时我有以下错误/警告：

/ConfViewController.m:198:46：’sendSynchronousRequest：returningResponse：error：’不推荐使用：首先在iOS 9.0中弃用 – 使用[NSURLSession dataTaskWithRequest：completionHandler：]（参见NSURLSession.h

根据我的阅读，我应该开始使用“NSURLSession”，但如何在我的代码中使用“NSURLSession”，或者我是否正确地看待这个？

我的代码：

NSString *deviceName = [[UIDevice currentDevice]name]; NSString *post =[[NSString alloc] initWithFormat:@"devicename=%@",deviceName]; NSLog(@"PostData: %@",post); NSURL *url=[NSURL URLWithString:@"http://www.mydomain/sysscripts/conf/devicelookup17.php"]; NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:url]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/json" forHTTPHeaderField:@"Accept"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setHTTPBody:postData]; NSError *error = [[NSError alloc] init]; NSHTTPURLResponse *response = nil; //The ERROR point NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; //NSLog(@"Response code: %ld", (long)[response statusCode]); if ([response statusCode] >=200 && [response statusCode]  %@", responseData); SBJsonParser *jsonParser = [SBJsonParser new]; NSDictionary *jsonData = (NSDictionary *) [jsonParser objectWithString:responseData error:nil]; // NSLog(@"%@",jsonData); // NSInteger success = [(NSNumber *) [jsonData objectForKey:@"success"] integerValue]; NSInteger roomid = [(NSNumber *) [jsonData objectForKey:@"roomid"] integerValue]; // NSLog(@"%ld",(long)success); //NSLog(@"%ld",(long)roomid); NSString *RoomID = [NSString stringWithFormat:@"%ld",(long)roomid]; // NSLog(@"%@", RoomID); NSString *firstString = @"http://www.mydomain/apps/conf/lon/dt/devices/ /template17.php"; // NSLog(@"%@", firstString); NSString *roomID = RoomID; // NSLog(@"%@", roomID); NSString *newString = [firstString stringByReplacingOccurrencesOfString:@" " withString:roomID]; // NSLog(@"%@", newString); NSURL *url2 = [NSURL URLWithString: newString]; NSLog(@"%@", url2); NSURLRequest *request2 = [NSURLRequest requestWithURL:url2]; // ConfViewController *navex =[[ConfViewController alloc] initWithNibName:nil bundle:nil]; //[self presentViewController:navex animated:YES completion:NULL]; [webView loadRequest:request2]; } 

非常感谢你的时间。

Answer 1

1. 更换

    NSData *urlData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; 

   同

    [[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * data, NSURLResponse * response, NSError * error) { }] resume]; 

2. 将整个代码放在完成块中的sendSynchronousRequest行之后（在大括号之间）。

3. 更换

    if ([response statusCode] >=200 && [response statusCode] <300) 

   同

    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response; NSInteger statusCode = httpResponse.statusCode; if (statusCode >= 200 && statusCode < 300) 

4. 将urlData替换为data 。

5. 删除

    NSError *error = [[NSError alloc] init]; NSHTTPURLResponse *response = nil;