检查一个单词后面是否有单词（NSSTRING）(Check if there is a word after a word (NSSTRING))

检查一个单词后面是否有单词（NSSTRING）(Check if there is a word after a word (NSSTRING))

我有一个有趣的小问题。 所以我需要创建一个if语句，它可以检测数组中的单词后面是否有单词

所以我的代码是

NSArray *words = [texfield.text componentsSeparatedByString:@" "]; int index = [words indexOfObject:@"string"];

我不确定我是否必须这样做

NSString*needle=words[index+1]; if (needle isEqualto @"") { //There is a word after @"string"; }

我该怎么办？

如何确定@“string”后面是否有单词？

我感谢所有的帮助！！ :)

I have a fun little tricky problem. So I need to create an if statement that can detect if there is a word after a word in an array

so my code is

NSArray *words = [texfield.text componentsSeparatedByString:@" "]; int index = [words indexOfObject:@"string"];

I am not sure if I have to do something like

NSString*needle=words[index+1]; if (needle isEqualto @"") { //There is a word after @"string"; }

What should I do?

How can I determine is there is a word after @"string"?

I appreciate all the help!! :)

最满意答案

方法componentsSeparatedByString:将通过输入NSString分隔所有组件。

你的例子。 NSArray *words = [texfield.text componentsSeparatedByString:@" "];

将所有字符串分隔为" " 。 所以只需检查一下

NSInteger afterIndex = index+1; if(afterIndex<words.count) NSInteger afterIndex = index+1; if(afterIndex<words.count)如果是，则可以使用NSString 。

Method componentsSeparatedByString: will give all components separated by input NSString.

Your eg. NSArray *words = [texfield.text componentsSeparatedByString:@" "];

will have all string separated by " ". So just check if any

NSInteger afterIndex = index+1; if(afterIndex<words.count) if Yes, you have NSStringavailable.