问题
In some sense this question has already been answered at Limit number of characters in uitextview. But my particular case is that I have more than one textview in the same ViewController. So I am not sure how to fix that problem. Say I only have two textViews. How might I handle these cases:
they both have the same character limit?
each has different character limit? say 300 and 400 respectively.
Do I use IBAction? If yes how?
回答1:
So you need IBOutlet for both textviews
@property (weak, nonatomic) IBOutlet UITextField *textfield1;
@property (weak, nonatomic) IBOutlet UITextField *textfield2;
then in your delegate method
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
You simply add a check for the right textfield
if (self.textfield1 == textfield) {
// handle first text field here
} else {
// handle second text field here
}
来源：https://stackoverflow.com/questions/25272413/limit-number-of-characters-user-may-enter-into-multiple-uitextviews