NSString *string = @"abavavasdsvx,as.dsf/,.[abcdefghijklmn]dgdfg";
NSRange start = [string rangeOfString:@"["]; NSRange end = [string rangeOfString:@"]"]; NSString *sub = [string substringWithRange:NSMakeRange(start.location, end.location-start.location+1)];
NSLog(@"sub=%@",sub);
控制台就输出:[abcdefghijklmn]
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人之所以有一张嘴,而有两只耳朵,原因是听的要比说的多一倍。