NSString 提取10进制ASCII码数据转Byte，转data

NSString *s = @"10,78,10,6,42,65,112,112,108,101,18,14,49,57,50,46,49,54,56,46,56,56,46,49,54,48,32,134,175,182,218,5,42,30,10,14,71,82,79,85,80,45,73,68,45,71,85,69,83,84,18,12,232,174,191,229,174,162,229,136,134,231,187,132,50,12,57,67,69,51,51,70,52,55,51,55,53,66,56,1,24,10";
NSArray *arr = [s componentsSeparatedByString:@","];


NSData *bData = [[NSData alloc] initWithBytes:bytes length:arr.count];