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| * Get RFCardReaderDevice
| | {{Migrating|https://smartpossdk.gitbook.io/cloudpossdk/faq/card/use-mifare-card}} |
| <syntaxhighlight lang="java" line='line'>
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| device = (RFCardReaderDevice) POSTerminal.getInstance(mContext).getDevice(POSTerminal.DEVICE_NAME_RF_CARD_READER);
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| </syntaxhighlight>
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| * Open device
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| <syntaxhighlight lang="java" line='line'>
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| device.open();
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| </syntaxhighlight>
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| * Search Card
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| <syntaxhighlight lang="java" line='line'>
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| OperationListener listener = new OperationListener() {
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| @Override
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| public void handleResult(OperationResult arg0) {
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| if (arg0.getResultCode() == OperationResult.SUCCESS) {
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| sendSuccessLog2(mContext.getString(R.string.find_card_succeed));
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| rfCard = ((RFCardReaderOperationResult) arg0).getCard();
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| } else {
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| sendFailedLog2(mContext.getString(R.string.find_card_failed));
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| }
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| }
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| };
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| device.listenForCardPresent(listener, TimeConstants.FOREVER); The result will be returned in the callback listener.
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| </syntaxhighlight>
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| * Read
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| <syntaxhighlight lang="java" line='line'>
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| // demo for sector 1, block 2
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| int sectorIndex=1;
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| int blockIndex =2;
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| if (rfCard instanceof MifareCard) {
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| byte[] key = new byte[]{
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| (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
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| (byte) 0xFF
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| };
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| try {
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| MifareCard card = ((MifareCard) rfCard);
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| boolean verifyResult = card.verifyKeyA(sectorIndex, key);
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| if(verifyResult){
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| byte[] result = card.readBlock(sectorIndex, blockIndex);
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| }
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| } catch (DeviceException e) {
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| e.printStackTrace();
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| }
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| }
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| </syntaxhighlight>
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| * write
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| <syntaxhighlight lang="java" line='line'>
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| // demo for sector 1, block 2
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| int sectorIndex=1;
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| int blockIndex =2;
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| if (rfCard instanceof MifareCard) {
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| byte[] key = new byte[]{
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| (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
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| (byte) 0xFF
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| };
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| try {
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| MifareCard card = ((MifareCard) rfCard);
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| boolean verifyResult = card.verifyKeyB(sectorIndex, key);
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| if(verifyResult ){
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| card.writeBlock(sectorIndex, blockIndex, arryData);
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| }
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| } catch (DeviceException e) {
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| e.printStackTrace();
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| }
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| }
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| </syntaxhighlight>
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| * Close device
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| <syntaxhighlight lang="java" line='line'>
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| device.close();
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| </syntaxhighlight>
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