Something wrong with my variable [closed]

Question

I created a getter to get the content of a variable, but it doesn't works.

Here the code:

-(void)documentURLReceived:(NSURL *)url{

    _getUrl = [[NSURL alloc] init];
    _getUrl = url;
    NSLog(@"Result: %@", _getUrl);
}
-(void)getUrl{
    NSLog(@"getUrl: %@", _getUrl);
}

Here the result in the consol:

Result: http://www.google.com

getUrl : (null)

I don't understand why!

Here my property:

@property (strong, nonatomic) NSURL *getUrl;

Thanks for your help :)

Answer 1

If you are using ARC and the latest Xcode - get rid of the getURL method - you should not be overwriting this unless you need to do custom logic, furthermore, your getURL method returns nothing and is a void method - so the variable is most likely set but your method is overwriting the automatically generated getter and is returning nothing.

Did a test in Xcode

In header file I have:

@property (nonatomic, strong) NSURL *getURL;

and then in implementation file I have:

- (void)documentURLReceived:(NSURL *)url
{
    _getURL = url;
    NSLog(@"%@",_getURL);
}

which outputs:

2013-04-04 23:29:27.681 VitalityDesignTestSuite[90518:c07] http://www.google.com

okie dokie I wrote you a sample:

http://bit.ly/10yWb36

to use those you can go:

MyViewController *mvc = [[MyViewController alloc] initWithNibName:@"MyViewController" bundle:nil];
//Now you can set the myURL variable directly
[mvc setMyURL:[NSURL URLWithString:@"http://www.google.com"]];
NSLog(@"Direct Setting: %@",mvc.myURL);

//OR you can call the method your wrote
[mvc documentDidReceiveURL:[NSURL URLWithString:@"http://www.google.com"]];
NSLog(@"Selector Setting: %@",mvc.myURL);

that outputs:

2013-04-04 23:39:09.407 VitalityDesign[92197:c07] Direct Setting: http://www.google.com 2013-04-04 23:39:09.408 VitalityDesign[92197:c07] Selector Setting: http://www.google.com

hope this helps

Answer 2

First of all are you getting anything in url?

If No, -> Work over it

If yes then, try to do following:

_getUrl = [[NSURL alloc] init];
_getUrl = url;
[_getUrl retain];
NSLog(@"Result: %@", _getUrl);

Enjoy Programming!