Iphone 迭代 NSString 的子字符串出现次数

我想找到 NSString 中所有出现的子字符串，并逐一迭代以对该 NSString 进行一些更改。我该怎么做呢？

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)];
}

Or just

[sourceString stringByReplacingOccurrencesOfString:searchString withString:targetString];

如果您想将源字符串中各处的 searchString 更改为相同的值。