Codelab: Optimizing Usage of Bluetooth Peripheral Devices
summary
Covers Android Bluetooth Classic and BLE APIs and a Zebra SDK that folds the messy native stack into three classes (connection, device, printer) so discovery, connect, format and send happen with a few calls. Demonstrates saving image templates on the printer so BLE sends only dynamic fields (templates saved on printer), cutting 8–10s BLE image transfers down to near-real-time versus ~1s on Classic. Shows Link‑OS printers, NFC pairing to skip discovery, and always closing sockets to avoid reconnect failures.
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