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Screen Shot 2014-11-20 at 12.30.35 PM

convert NSMutableData to NSData

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-(NSData*)FunTest{ NSMutableData *theData = [NSMutableData data]; char bytesToAppend[5] = {0x01, 0xf0, 0x64, 0x0, 0x6a}; [theData appendBytes:bytesToAppend length:sizeof(bytesToAppend)]; [theData appendBytes:bytesToAppend length:sizeof(bytesToAppend)]; ...

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Convert NSString Hex to int Decimal Value ,iOS

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