如何测试 Objective c 中的字符串是否为空？

Question

How do I test if an NSString is empty in Objective C?

转载于:https://stackoverflow.com/questions/899209/how-do-i-test-if-a-string-is-empty-in-objective-c

Answer 1

You can check if [string length] == 0. This will check if it's a valid but empty string (@"") as well as if it's nil, since calling length on nil will also return 0.