UITextField是否为空？

Question

To know if an UITextField is empty I used the following code:

if ( [ [textField text] isEqualToString:@""] )

But unfortunately it somehow fails to tell if the text field is empty.

What are the other ways?

When [textField text] is empty, it equals to nil.

Thank you.

Answer 1

也许尝试[[textField text] length] == 0 ？

Answer 2

[textField hasText]

参见参考 。