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Flutter: Connect via Bluetooth

For Flutter apps that load a JS bundle via WebView or a JS engine and bridge to @onekeyfe/hd-common-connect-sdk using a low-level adapter.

Step 1. Choose a runtime

  • WebView: stable and broadly supported; bridge API identical to iOS/Android native shells

  • JS engine: e.g. flutter_js, run the built JS bundle directly in Dart

Step 2. Build the JS bundle

Build in the native examples under the hardware-js-sdk repository (see web/ directories) and produce web_dist/ assets.

Step 3. Load the JS bundle

Load the web_dist/ assets in Flutter (either via WebView or a JS engine).

Step 4. Implement the messaging bridge

Expose enumerate/connect/disconnect/send/receive from native to JS, keeping the same signatures. Forward 64‑byte BLE notification chunks and reassemble hex payloads for receive() on JS.

Step 5. Handle UI events

Show native dialogs for PIN/Passphrase/confirmations and respond via HardwareSDK.uiResponse.

BLE UUIDs

  • serviceUuid = 00000001-0000-1000-8000-00805f9b34fb

  • writeCharacteristic = 00000002-0000-1000-8000-00805f9b34fb

  • notifyCharacteristic = 00000003-0000-1000-8000-00805f9b34fb

References

Once wired, the chain API usage is identical to WebUSB: provide connectId and (when required) deviceId.

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