EXC_BAD_ACCESS while textField becomeFirstResponder - ios

Question

I am getting EXE_BAD_ACCESS exception when I hit "back" button on NavigationBar of my CreateViewController which is pushed on UINavigationController
When I enable following line in CreateViewController.m (full code at the bottom)
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
self.navigationController.navigationBar.hidden = NO;
//[self.textField becomeFirstResponder];
}
I start getting Thread1:EXE_BAD_ACCESS(code=1, address=...)
int main(int argc, char * argv[])
{
#autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}
If I keep the above line of code disabled, then hitting back button takes me to MainViewController as expected.
I am a newbie to iOS. What I am doing wrong? Please see my code below.
Appdelegate.h
#interface AppDelegate : UIResponder <UIApplicationDelegate>
#property (strong, nonatomic) UIWindow *window;
#end
Appdelegate.m
import "AppDelegate.h"
import "MainViewController.h"
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
id controller = [[MainViewController alloc] initWithNibName:#"MainView" bundle:nil];
id navController = [[UINavigationController alloc] initWithRootViewController:controller];
self.window.rootViewController = navController;
[self.window makeKeyAndVisible];
return YES;
}
#end
MainViewController.h
#interface MainViewController : UIViewController
- (IBAction)create:(id)sender;
#end
MainViewController.m
import "MainViewController.h"
import "CreateViewController.h"
#implementation MainViewController
#pragma mark - View lifecycle
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (void)viewWillAppear:(BOOL)animated {
self.navigationController.navigationBar.hidden = YES;
}
- (IBAction)create:(id)sender {
id controller = [[CreateViewController alloc] initWithNibName:#"CreateView" bundle:nil];
[self.navigationController pushViewController:controller animated:YES];
}
#end
CreateView.h
#interface CreateViewController : UIViewController <UITextFieldDelegate>
#end
CreateView.m
- (void)viewDidLoad {
[super viewDidLoad];
[self.navigationController.navigationBar setTintColor:[UIColor purpleColor]];
self.textField=[[UITextField alloc] initWithFrame:CGRectMake(80, 10, 160, 30)];
[self.textField setBorderStyle:UITextBorderStyleRoundedRect];
self.textField.placeholder = #"Name";
[self.textField setBackgroundColor:[UIColor clearColor]];
self.textField.delegate = self;
[self.navigationController.navigationBar addSubview:self.textField];
self.navigationController.navigationBar.hidden = NO;
}
- (void)viewDidUnload {
[super viewDidUnload];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
self.navigationController.navigationBar.hidden = NO;
//[self.textField becomeFirstResponder];
}

Answer 1

Go to breakpoint navigator and add exceptions breakpoint as shown below , 1st option :

Answer 2

Instead of adding self.textField as subview to navigation bar, set the textField as titleView of navigation item of the view controller.
[self.navigationItem setTitleView:self.textField];
This must help...