Iphone迭代NSString的子字符串出现 [英] Iphone iterate over substring occurrences of a NSString

问题描述

我想在NSString中找到所有出现的子字符串，并逐个迭代以对该NSString进行一些更改。我该怎么办？

I would like to find all occurrences of a substring in a NSString, and iterate one by one to do some changes to that NSString. How should I do it?

推荐答案

怎么样

// find first occurrence of search string in source string
NSRange range = [sourceString rangeOfString:@"searchString"];
while(range.location != NSNotFound)
{
    // build a new string with your changed values

    range = [sourceString rangeOfString:@"searchString" options:0 range:NSMakeRange(range.location + 1, [sourceString length] - range.location - 1)];
}

或只是

[sourceString stringByReplacingOccurrencesOfString:searchString withString:targetString];

如果你想在搜索源字符串的任何地方将searchString更改为相同的值。

if you want to change the searchString to the same value everywhere in the source string.

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