How to Verify Printer Status: Out of Paper Check: Difference between revisions

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== Java API: queryStatus() ==
{{Migrating|https://smartpossdk.gitbook.io/cloudpossdk/faq/printer/verify-printer-paper-status}}
Generally, call this method to check whether paper existed before one time printing, if print a large receipt, perhaps need check after printing.
<syntaxhighlight lang="java" line='line'>
  device = (PrinterDevice) POSTerminal.getInstance(mContext).getDevice(POSTerminal.DEVICE_NAME_PRINTER);
  int result = device.queryStatus();
  device.close();
</syntaxhighlight>
 
result< 0 : error code;
 
result= 0 : out of paper;
 
result= 1 : has paper;

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