Question

I am setting the value for the string in the viewdidload method and getting the string value in the button action method the app gets crashed. can I know the reason for crashing and how to pass the values to the method.

in .h file

NSString *test;

in .m file

-(void)viewDidLoad 
{
    test = [NSString stringWithFormat:@"sample"];
}

-(IBAction) buttonPressed:(id)sender 
{
    NSLog(@"%@", test);
}

When I pressed the button the app crashes.

Answer 1

Please try using this solution, I think this will help you,

Create Property of test in .h file like this,,

@property(nonatomic,retain) NSString *test;

and synthesize it in .m file like this,

@synthesize test;

now use test as self.test in .m file like this,

-(void)viewDidLoad 
{
    self.test = [NSString stringWithFormat:@"sample"];
}

-(IBAction) buttonPressed:(id)sender 
{
    NSLog(@"%@", self.test);
}

Another solution for this is just retain that test string in ViewDidLoad also, I think this will also help you..

Hope this will help you..