[英]How to cancel an AFHTTPRequestOperation and not retain previous progress
[英]How to cancel AFHTTPRequestOperation?
我有Singleton类APIHTTPClient负责使用AFHTTPRequestOperation **进行Restful调用。我有一个问题,即用户单击按钮以查看视图并调用APIHTTPClient以获取新数据以在该视图中显示它,但用户也可以单击返回按钮。单击另一个视图并调用APIHTTPClient获取新视图的新数据。
当用户单击“上一步”以调用另一个平稳请求时,如何取消先前的AFHTTPRequestOperation请求。
-(void)CallRemoteService:(int)iModuleID {静态NSString * const BaseURLString = @“ http://www.raywenderlich.com/demos/weather_sample/ ”; NSString * string = [NSString stringWithFormat:@“%@ weather.php?format = xml”,BaseURLString];
NSURL *url = [NSURL URLWithString:string];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
// Make sure to set the responseSerializer correctly
// operation.responseSerializer = [AFXMLParserResponseSerializer序列化器];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
self.queue = [[NSOperationQueue alloc] init];
在您的视图控制器中,保留对AFHTTPRequestOperation * operation的引用,然后按下:
[operation cancel]
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.