Question

Step 1. Add a NSTextField in xib

Step 2. Add NSTextFieldDelegate in .h file,Control-drag NSTextField to File’s Owner to set delegate to it

Step 3, In .m file add the method:

- (void)textDidChange:(NSNotification *)notification{
    NSLog(@"textDidChange");
}

but the method textDidChange: not called?

Is any mistake?

Answer 1

The file’s owner isn’t the app delegate — is the app delegate where you put that method? You should control drag to the blue cube labeled app delegate.

After Edit: The message that the delegate receives is controlTextDidChange: not textDidChange, so implement that one instead.