[Moved] .read and .write functions | Thread profile

The blank squares are 0s, I'm quite surprised you didn't get a nullpointexception from this code. Any way it seems that you may need to initiate MY_KEY with KEY_BYTES /A

Actually I have a string of code that initializes MY_KEY with KEY_BYTES above that snippet: MY_KEY=new MFKey.KeyB(KEY_BYTES); Anyway, can you please give advice how I can write and read properly what I wrote to the memory? Your help is very appreciated, thanks.

It appears that your key was invalid then. You are not trying to write the first block in the first sector? Check the access bits if both writing and reading data can be done using key B /A

Well I do a statement of block=conn.getBlock(1); before that snipet of code? Is this correct? Should I be getting a different block to write with my key? Do I also have to do a getSector(number) statement as well? Thanks for your help.

getBlock(1) should be fine, it should point to the second block of the standard sector, which also uses the default keys. But to be sure, try: conn.getSector(1).getBlock(0); instead Also: Have you unlocked the secure element? If not, the default keys are invalid.

From the javadoc Code: getBlock public MFBlock getBlock(int blockIndex) Returns the block at the specified block index. Valid block index ranges from 0 to getBlockCount() - 1. Parameters: blockIndex - the block index. Returns: the MFBlock object that corresponds with the specified index. Throws: java.lang.IllegalArgumentException...

Okay, I replaced block=conn.getBlock(1) with block=conn.getSector(1).getBlock(0);. I believe that is what you said to that? I guess I didn't unlock the security element because so far I have only been doing this in the Nokia Emulator. Do I still need to unlock the security element even with the emulator? Is this what I need to download to unlock the security element, I want to make sure...

Terenas, String internalUrl=System.getProperty("internal.mf.url"); conn=(MFStandardConnection)Connector.open(internal Url); This is how I make the connection to internal mifare portion. As for unlocking the security element, I haven't done that yet. I am just doing this on the emulator so far. Is this what I need to download to unlock the security element. http://www.forum....

Since your phone is locked, try the other transport keys, 0xa0a1a2... and 0xb0b1b2... (google for them). Not sure that it will do any help, one of the things that happen when you unlock your phone is that the MIFARE keys are set to (0xfff...), so I guess they are arbitrary to start with. /A

It should be okay now Be careful !! After unlocking the phone you'll need a code signing certificate to use MIFARE with a MIDLET