Question

Working on an experiment on the iPad. Tried some variations on how to do this, but I can’t seem to get it to work correctly…

I tap a UIButton on my MainViewController and a TextEntryModule is added to the view. TextEntryModule is its own class (for multiple instantiation) and it contains a UITextView called TextEntry (this all works at the moment).

I tap on the TextEntry UITextView and it brings up the keyboard and another view (located in MainViewController) with a UITextView called TextPreview. (this also works at the moment).

The part I’m having trouble with is synching the two UITextViews. The idea being that when I type into TextEntry, the text in TextPreview will also be updated.

Outlets are linked properly for the text fields, but I think I’m missing something “obvious”:

TextEntryModule *tm = (AnnotationModule *)currentModule;
TextPreview.text = tm.TextEntry.text

Thanks in advance!

Answer 1

UITextView: delegate.

- (void)textViewDidChange:(UITextView *)textView

Then assign it the value of the other textview in this method.

Edit

@interface MainViewController <UITextViewDelegate> {
   ...
}
...
@end

Then you implement this method in the implementation file of MainViewController

@implementation MainViewController

//More code

- (void)textViewDidChange:(UITextView *)textView {
    TextEntryModule *tm = (AnnotationModule *)currentModule;
    TextPreview.text = tm.TextEntry.text
}
@end

Then you will have to set the TextEntryModule object’s delegate to self since the controller now conform to the protocol and can “act” upon this notification.