api_pos_printer 0.1.2

Flutter plugin for the integrated thermal printer on Android POS terminals. Drives iPosPrinter and Sunmi InnerPrinter services via AIDL with auto backend detection.

0.1.2

• Fix: printerSetAlignment is at txn 6 (not 7) and printerPrintBlankLines(int lines, int height, callback) is at txn 8 (not printerSetTextStyle). The OEM's iPos AIDL has been rebuilt from parameter names recovered from the LzyHardWareManager proxy stub. All confirmed transaction codes (1, 6, 8, 10, 11, 15, 18) now match exactly.
• All async iPos AIDL methods now return void (matching the OEM stub which writes only readException() after each transaction).
• iPos backend now reuses a single long-lived IPosPrinterCallback stub for the lifetime of the connection (the OEM service appears to fire results on the most recently registered callback rather than the per-call parameter). Defaults typeface to "ST" to match the original LzyHardWareManager flow.
• printBitmap / printBarcode / printRaw now throw UnsupportedOperationException on iPos backend — these aren't exposed by this OEM's service. Sunmi still supports them.
• feedPaper(dots) on iPos is now mapped to printerPrintBlankLines(1, dots, callback).

0.1.1

• Fix: realigned the iPos AIDL with the OEM service's transaction codes (getPrinterVersion() was speculatively included at txn 6, shifting every later method by one). Confirmed-against-smali codes 1, 6, 8, 10, 11, 15, 18 now match exactly.
• printerSetTextStyle simplified to the 2-int variant (textSize, alignment) actually exposed by these devices.
• New printerPrintText AIDL entry (txn 10) for the simpler text-print variant; full-format printSpecFormatText stays at txn 11.
• getFirmwareVersion() now returns null (not exposed by this OEM AIDL).
• IposBackend.callWithCallback now propagates the underlying RemoteException instead of swallowing it as false, and includes the operation name in the log/error message.

0.1.0

• Initial release.
• Backend ipos (com.iposprinter.iposprinterservice) — full feature support: status, init, self-check, alignment, text style, text/columns, bitmap, barcode, QR code, raw bytes, feed, perform-print.
• Backend sunmi (woyou.aidlservice.jiuiv5) — text, columns, bitmap, barcode, QR, raw, line-wrap.
• Auto-detection of installed backend.
• Status EventChannel exposing iPos broadcasts (PAPERLESS, BUSY, THP_HIGHTEMP, MOTOR_HIGHTEMP, NORMAL).