Question

I am using the following code to generate and parse the XML.
The method [self checksigninSucess]; is called and the UITextField values are set while pressing a “Sign IN” button.

-(void)checksigninSucess{

NSString* content = [NSString stringWithFormat:@"http://www.anball/login_check.php?email=%@&password=%@",emailField.text,passwordField.text];

NSData *xml = [NSData dataWithContentsOfURL: [NSURL URLWithString:content]];

NSLog(@"URLXML %@",[NSURL URLWithString:content]);

self.parser=[NSXMLParser alloc]initWithData:xml];
[self.parser setDelegate:self];
[self.parser parse];
[self.parser release];
self.parser=nil;
}

But my problem is that NSData holds the values which I enter in the text fields for the first time only. When I press the “Sign In” button for the second time with different email and password , NSData holds the same URL it generated before.
How can I clear the values held by NSData for the next try.

Answer 1

Why do you need to use NSData? Use NSString instead, as follows.

self.parser=[[NSXMLParser alloc] initWithContentsOfURL:[NSURL URLWithString:content]];

[self.parser setDelegate:self];
[self.parser parse];
[self.parser release];
self.parser=nil;