Question

the following is my source code:

/–‘fileName’ is an available filePath.–/

NSLog(@"%@", @"v-log start");
NSMutableArray *txtArray = [[NSMutableArray alloc] init];
[txtArray addObject:@"test"];
[txtArray writeToFile:fileName atomically:YES];
NSLog(@"%@", @"v-log end");

those code can be run perfectly if I put them in the (void)viewDidLoad

but I get ‘FilesHandling[3294:c07] * -[NSPathStore2 getFileSystemRepresentation:maxLength:]: message sent to deallocated instance 0x7146ad0′ Exception when I put them in (IBAction)btnClicked:(id)sender.

Can you please tell me why ??

Answer 1

Probably because the fileName string has been deallocated. Did you retain it?