Singleton for different NSURLConnection [duplicate] - ios

Question

This question already has an answer here:
How to identify WHICH NSURLConnection did finish loading when there are multiple ones?
(1 answer)
Closed 9 years ago.
I always used for connect with Server singleton class. I didn't check response from server and easy take data. Now I need use 10 different requests. I create property NSURLConnection. So how can I identify what connections I use in delegate methods like
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
Because from each request I take different data

Answer 1

What you could do is have a custom connection class representing a connection, its data, and optionally some info about the connection. I use this:
#interface MyConnection : NSObject
#property NSURLConnection *connection;
#property id info;
#property NSMutableData *data;
#end
Then just put the connections in an array, and compare the actual NSURLConnection objects to each other, in order to find out which connection received data/failed etc.
Creating a connection:
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:someRequest delegate:self];
if (connection){
MyConnection *con = [[MyConnection alloc] init];
con.connection = connection;
con.data = [NSMutableData data];
[self.arrayWithConnections addObject:con];
}
The methods:
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
MyConnection *con = [self getConnection:connection]
[con.data appendData:data];
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
MyConnection *con = [self getConnection:connection];
[con.data setLength:0];
}
-(MyConnection *)getConnection:(NSURLConnection *)con
{
for (MyConnection *myCon in self.arrayWithConnections)
if ([con isEqual: myCon.connection])
return myCon;
return nil;
}