iOS URL 请求无效

iOS URL Request Not Working

我正在尝试将数据发送到 PHP 网页(它已经知道如何处理接收 URL)。单击特定按钮后,我的应用程序应该发送 URL 请求,但事实并非如此。我正在使用 "NSURLConnectionDelegate",但我没有实现任何方法,我是否正确遵守它?我有以下代码:

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)buttonClicked:(id)sender {

    NSString *temp = [NSString stringWithFormat:@"www.private.com/recievedata.php?name=%@&address=%@&longitude=%@&latitude=%@",_nameLabel.text,_addressLabel.text,_longitudeLabel.text,_latitudeLabel.text];

    NSURL *url = [NSURL URLWithString:temp];
    NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];

    [NSURLConnection connectionWithRequest:request delegate:self];
}
@end

这是获得所需内容的最简单方法:

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
    //Handle here
}];

这是非常有限的,因为您无法取消此连接,如果需要更复杂的 SSL 质询,则无法提供。不过这对你来说似乎已经足够了。


更新: 从 iOS 9 开始,NSURLConnection 已弃用。相反,使用 NSURLSession。这里和上面一样,用新的 API:

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

使用下面的代码代替[NSURLConnection connectionWithRequest:request delegate:self];

[NSURLConnection sendAsynchronousRequest:urlRequest queue:
[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
 {
    if (error)
    {  
        //error message    
    }
    else
    {
       dispatch_async(dispatch_get_main_queue(), ^{

        //handle server's response here...

    });
    }
}];

希望对you.Thank你有所帮助。