iOS-截取字符串中两个指定字符串中间的字符串

// 要截取 "> 和 </ 之间的汉字内容:
@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
NSString *string = @"<a href=\"http\">这是要截取的内容</a>";
NSRange startRange = [string rangeOfString:@"\">"];
NSRange endRange = [string rangeOfString:@"</"];
NSRange range = NSMakeRange(startRange.location + startRange.length, endRange.location - startRange.location - startRange.length);
NSString *result = [string substringWithRange:range];
NSLog(@"%@",result);
}

@end

// NSString 分类中实现如下方法:#import "NSString+Extension_NSString.h"@implementation NSString (Extension_NSString)// 截取字符串方法封装// 截取字符串方法封装- (NSString *)subStringFrom:(NSString *)startString to:(NSString *)endString{NSRange startRange = [self rangeOfString:startString];NSRange endRange = [self rangeOfString:endString];NSRange range = NSMakeRange(startRange.location + startRange.length, endRange.location - startRange.location - startRange.length);return [self substringWithRange:range];}@end// 控制器中直接用字符串调用:#import "ViewController.h"#import "NSString+Extension_NSString.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];NSString *string = @"<a href=\"http\">这是要截取的内容</a>";NSString *result = [string subStringFrom:@"\">" to:@"</"];NSLog(@"%@",result);}// 这样使用起来更方便,简洁