搜索 NSString 是否包含值

问题描述

我有一些由几个字符构成的字符串值，我想检查它们是否存在于另一个 NSString 中，不区分大小写和空格.

I have some string value which constructed from a few characters , and i want to check if they exist in another NSString, without case sensitive, and spaces .

示例代码:

NSString *me = @"toBe" ;
NSString *target=@"abcdetoBe" ;
//than check if me is in target.

在这里我会得到 true 因为 me 存在于 target 中.我如何检查这种情况?

Here i will get true because me exist in target .How can i check for such condition ?

我已阅读我如何检查一个字符串是否包含 Objective-C 中的另一个字符串? 但它区分大小写，我需要找到不区分大小写的..

I have read How do I check if a string contains another string in Objective-C? but its case sensitive and i need to find with no case sensitive..

推荐答案

使用选项 NSCaseInsensitiveSearch 和 rangeOfString:options:

NSString *me = @"toBe" ;
NSString *target = @"abcdetobe" ;
NSRange range = [target  rangeOfString: me options: NSCaseInsensitiveSearch];
NSLog(@"found: %@", (range.location != NSNotFound) ? @"Yes" : @"No");
if (range.location != NSNotFound) {
    // your code
}

NSLog 输出:

找到:是

注意:我更改了目标以证明不区分大小写的搜索有效.

Note: I changed the target to demonstrate that case insensitive search works.

选项可以或"在一起，包括:

The options can be "or'ed" together and include:

• NSCaseInsensitiveSearch
• NSLiteralSearch
• NSBackwardsSearch
• NSAnchoredSearch
• NSNumericSearch
• NSDiacriticInsensitiveSearch
• NSWidthInsensitiveSearch
• NSForcedOrderingSearch
• NSRegularExpressionSearch

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