How can I find the location of a specific character in an NSString?
如何在NSString中找到特定字符的位置?
I have tried this but it returns an empty range (I want to find the location of the '?'):
我已经尝试过了，但是它返回一个空的范围(我想找到“?”的位置):
NSRange range = [@"This is a ? test to see if it works" rangeOfCharacterFromSet:[NSCharacterSet characterSetWithCharactersInString:@"?"]];
2 个解决方案
#1
1
You must doing something else wrong. Because this is absolutely correct and returns {10, 1}. At least on my mac it does ;-)
你必须做些别的错事。因为这是绝对正确的，返回{10,1}。至少在我的mac上是这样的;
#2
3
maybe this will work?
也许这将工作吗?
NSString* s = @"hello?";
NSRange range = [s rangeOfString:@"?"];
#1
1
You must doing something else wrong. Because this is absolutely correct and returns {10, 1}. At least on my mac it does ;-)
你必须做些别的错事。因为这是绝对正确的，返回{10,1}。至少在我的mac上是这样的;
#2
3
maybe this will work?
也许这将工作吗?
NSString* s = @"hello?";
NSRange range = [s rangeOfString:@"?"];