Search from the NSDATA

Question

I have following datav

   <050d00e7 f0e100aa ffffffff ffffff05 0d00e7f0 e100abff ffffffff ffff050d 00e7f0e1 00acffff ffffffff ff>

in NSDATA but i want to search for

      0d00e7f0 e100abff

so please help me how should I apply This Please help

I used in this way

NSData *left1onData=[NSData dataWithBytes:left1on length:15];
NSRange left1onRange=[data rangeOfData:left1onData options:0 range:NSMakeRange(0,[data length])];

edit condition I use if(left1offRange.location==NSNotFound)

Answer 1

使用以下方法：

- (NSRange)rangeOfData:(NSData *)dataToFind options:(NSDataSearchOptions)mask range:(NSRange)searchRange