How to Customize the POS Graphical User Interface for PINPAD Input: Difference between revisions
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Revision as of 16:48, 9 January 2024
API Overview
setupCallbackHandler
boolean setupCallbackHandler(PinPadCallbackHandler handler)
This API allows you to set a custom callback handler for PINPAD inputs in your POS application. When a PIN is inputted on the PINPAD, the specified callback handler is triggered.
Parameters | |
---|---|
handler | PinPadCallbackHandler : Not null. |
Returns | |
boolean | true: success. |
processCallback of PinPadCallbackHandler
void processCallback(byte[] data);
The API provides a method to set this callback handler.
Parameters | |
---|---|
data | byte[] : date[0] is the count of input pin. |
Implementation Steps
- Initialize the PINPAD:
- Before setting up the callback handler, ensure to call the 'open' method to initialize the PINPAD.
- Setting the Callback Handler:
- Use the 'setupcallbackhandler' method to assign your custom callback handler.
- Once this handler is set, the default PINPAD user interface (UI) will not appear.
- Handling PIN Input:
- The driver will send the count of the inputted PIN to the callback handler.
- Your application (referred to as the third-app) can then process this inputted PIN count as needed.
Snippet code:
PINPadDevice device = (PINPadDevice) POSTerminal.getInstance(mContext)
.getDevice("cloudpos.device.pinpad");
device.open();
device.setupCallbackHandler(new PinPadCallbackHandler() {
@Override
public void processCallback(byte[] data) {
Log.e(TAG, "processCallback ");
mHandler.obtainMessage(PIN_KEY_CALLBACK, data[0]).sendToTarget();
}
@Override
public void processCallback(int nCount, int nExtra){
// don't need implement.
}
});
KeyInfo keyInfo = new KeyInfo(PINPadDevice.KEY_TYPE_MK_SK, 0, 0, 4);
String pan = "0123456789012345678";
OperationResult operationResult = device.waitForPinBlock(keyInfo, pan, false,
TimeConstants.FOREVER);
if (operationResult.getResultCode() == OperationResult.SUCCESS) {
byte[] pinBlock = ((PINPadOperationResult) operationResult).getEncryptedPINBlock();
sendSuccessLog2("PINBlock = " + StringUtility.byteArray2String(pinBlock));
} else {
sendFailedLog2(mContext.getString(R.string.operation_failed));
}
device.close();