UITextView not becoming first responder

Question

I have a UIView that contains a UITextView. The UIView is initiated inside a UIViewController.

But when I touch the UITextView box, nothing happens. Neither the keyboard appears nor delegate methods respond to interaction.

Code:

    noteText = [[UITextView alloc]initWithFrame:CGRectMake(0, 0, 700, 240)];
    noteText.layer.borderColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.2].CGColor;
    noteText.layer.borderWidth = 2;
    [noteText setEditable:YES];
    noteText.userInteractionEnabled = YES;
    noteText.returnKeyType = UIReturnKeyDone;
    noteText.font = [UIFont fontWithName:@"Calibri" size:16];
    noteText.textColor = [UIColor blackColor];
    [self addSubview:noteText];

Update 1

I removed all other views from the UIViewController, and only put a UITextView in the UIViewController and still not reacting. Neither cursor or keyboard appear.

Answer 1

I found the error.

In one class I categorize the UITextView instead of subclass and set canBecomeFirstResponder to NO.