这是一个奇怪的问题。我正在使用 NSURLConnectionDelegate 从 Web 服务中检索信息。在 connectionDidFinishLoading 方法中,我向委托发送消息以更新 UITableView 并隐藏“正在加载...”UILabel。委托方法被调用,更新表格视图和隐藏标签的代码被调用,但标签和表格视图没有响应。我在 IB 中正确连接了所有内容,因为我能够在关闭/重新打开视图时隐藏/显示标签并更新表格视图。任何帮助将不胜感激。
相关代码:
// File with NSURLConnection
// .h
@protocol updateTableViewDelegate <NSObject>
-(void)didFinishLoadingData;
@end
@property (nonatomic, assign) id <updateTableViewDelegate> delegate;
// .m
@synthesize delegate;
- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
if (delegate && [delegate respondsToSelector:@selector(didFinishLoadingData)]) {
[delegate didFinishLoadingData];
}
}
// connection started with
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
// File with table view
// conform to <updateTableViewDelegate> in header file
// set the delegate of NSURLConnection object to self in viewDidLoad
-(void)didFinishLoadingData{
self.viewLoading.hidden = YES;
// Repopulate array of data for table view
....
[self.tblViewLookup reloadData];
}