iPhone:如何检查字符串中是否存在子字符串？

Question

我有一些字符串名称,我想比较该字符串是否包含像"_thumb.png"这样的子字符串.

Answer 1

[string rangeOfString:string1].location!=NSNotFound

rangeOfString: documentation.

Answer 2

你可以试试这个:

NSString *originalString;
NSString *compareString;

让您string存储,originalString并存储substring您想要比较的内容compareString.

if ([originalString rangeOfString:compareString].location==NSNotFound)
{       
    NSLog(@"Substring Not Found");  
}
else
{
    NSLog(@"Substring Found Successfully");
}