CODEWITHSUNDEEP
iphoneobjective-cios6
Nick Scottman
Nick Scottman

Reputation: 3289

Thread 1:EXC_BAD_ACCESS (code=1, address=0x70745092)

So as the title said, I'm getting this error in my code. There's no output besides the usual (lldb) thing. The line it's pointing to is

0x10df051: movl 8(%edx), %edi0x10df051: movl 8(%edx), %edi

The code itself is

DeltaViewController *deltaview = [[DeltaViewController alloc] initWithNibName:@"DeltaViewController" bundle:nil];

It happened when I selected an object in my picker and it should add a subview.

Upvotes: 1

Views: 2585

Answers (1)

Kjuly
Kjuly

Reputation: 35131

deltaview is DeltaViewController type, so it's a controller, not a view. After you've added it as a subview of self.view ([self.view addSubview:deltaview.view];), you might release the deltaview. Then whenever you sent a method (which is implemented in DeltaViewController) to deltaview, you'll get this EXC_BAD_ACCESS error of course.

A simple solution: Just declare deltaview (actually, it should be deltaViewController instead) as an iVar instead of local variable.

EDIT:

Well, here's a simple code snippet:

YourViewController.h:

@interface YourViewController : UIViewController

@property DeltaViewController *deltaViewController;

@end

YourViewController.m:

@implementation YourViewController

@synthesize deltaViewController;
...

- (void)aMethod;

@end

- (void)dealloc {
  self.deltaViewController = nil; // set it to nil & release it after yourViewController dealloced.
  [super dealloc];
}

- (void)aMethod {
  DeltaViewController *deltaViewController = [[DeltaViewController alloc] initWithNibName:@"DeltaViewController" bundle:nil];
  // ...(setup deltaViewController)
  self.deltaViewController = deltaViewController; // it'll retain deltaViewController
  [deltaViewController release];

  ...
}

Upvotes: 2

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