UITextField停止响应触摸

Question

I have a storyboard with a UIView with two UITextFields within it. When I navigate back to the controller the UITextFields no longer respond to touch. I am navigating to the controller like this

UIViewController* controller = [self rootNavigationController].storyboard] 
instantiateViewControllerWithIdentifier:@"mycontroller"];

for some reason once I do this, they stop responding.

As far as the controller is concerned, it only has a few IBOutlets

myController.h

@interface myController : UIViewController

@property (nonatomic,weak) IBOutlet UIView *mainView;
@property (nonatomic,weak) IBOutlet UITextField *field1;
@property (nonatomic,weak) IBOutlet UITextField *field2;

@end

myController.m

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:(BOOL)animated];
    [self.field1 becomeFirstResponder];
}

- (void)viewDidLoad {
    [super viewDidLoad];

    self.field2.layer.borderColor =[[UIColor colorWithRed:4.0/255.0
                                                           green:108.0/255.0
                                                            blue:187.0/255.0
                                                           alpha:1.0] CGColor];
    self.field2.layer.borderWidth = 1.0;

    self.field1.layer.borderColor =[[UIColor colorWithRed:4.0/255.0
                                                           green:108.0/255.0
                                                            blue:187.0/255.0
                                                           alpha:1.0] CGColor];
    self.field1.layer.borderWidth = 1.0;
}

I have the IBOutlets hooked up on the story board.

I've tried cliptobounds on the mainView. But it doesn't work.

Answer 1

What you're doing with the following code:

UIViewController* controller = [self rootNavigationController].storyboard] 
instantiateViewControllerWithIdentifier:@"mycontroller"];

You're creating a new instance of mycontroller . That's why, as you said: " once I do this, they stop responding."

Therefore, the solution to your problem would be, not to create a new instance of the previous viewController , but to just navigate back. Here is what I mean:

Remove this:

\n

 
 
 
  
  UIViewController* controller = [self rootNavigationController].storyboard] instantiateViewControllerWithIdentifier:@"mycontroller"];
 
  

And in place of that, insert the following:

[self.navigationController popViewControllerAnimated:YES];

Hope this helps!! :)