ios - 在 iOS 中使用 NSURLConnection 获取分页 URL 数据

Question

我是iOS新手，制作了一个包含JSON解析数据的应用程序，我使用NSURLConnection并获取数据，但这里我的URL包含分页，所以，我想在tableView滚动时获取分页数据我编写了如下代码

- (void)viewDidLoad
{
page=0;
NSString *path = [NSString stringWithFormat:@"http://isp.ebizzprojects.com/webservices/testimonial.php?page=%d",page];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:path]];
[NSURLConnection connectionWithRequest:request delegate:self];
}

当我的表格 View 像这样滚动时，我还会发送第二个请求

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
 {
NSInteger currentOffset = scrollView.contentOffset.y;
NSInteger maximumOffset = scrollView.contentSize.height- scrollView.frame.size.height;
if (maximumOffset - currentOffset <= 0)
{
    page = page + 1;
    [self getData];
}
}
 -(void)getData
 {
NSString *path = [NSString stringWithFormat:@"http://isp.ebizzprojects.com/webservices/testimonial.php?page=%d",page];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:path]];
[NSURLConnection connectionWithRequest:request delegate:self];
 }

和 NSURLConnection 委托(delegate)方法一样

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
 {
[_parsedData setLength:0];
 }
 -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[_parsedData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
_parsedData = nil;
_parsedData = [[NSMutableData alloc]init];
[[[UIAlertView alloc]initWithTitle:@"Alert!" message:@"Connection Error" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Ok", nil]show];
 }
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
 {
NSString *responseString =[[NSString alloc]initWithData:_parsedData encoding:NSUTF8StringEncoding];
NSDictionary *loDict = [responseString JSONValue];
self.responceArray=[loDict valueForKey:@"description"];
self.nameArray=[loDict valueForKey:@"name"];
self.testimonialTable.hidden=FALSE;
[self.testimonialTable reloadData];
}

从我的代码中，当我滚动 TableView 时，我只得到第二页数据，当我的 TableView 滚动时，我想将这两个数据保留到我的 TableView 中，请给我解决方案。 谢谢。

Answer 1

您需要向数组添加新项，例如，为 self.responceArray 和 self.nameArray 创建 NSMutableArray

[self.responceArray addObjectsFromArray:[loDict valueForKey:@"description"]];
[self.nameArray addObjectsFromArray:[loDict valueForKey:@"name"]];