bluetoothTool.js
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/**
* 经典蓝牙工具（仅 Android APP-PLUS）
* 用于佳博 D320FAX 等一体机的 Virtual BT Printer 连接
* 支持 RFCOMM 回退连接（部分设备需要）
*/
// #ifdef APP-PLUS
function getAdapter () {
if (typeof plus === 'undefined' || !plus.android) return null
const BluetoothAdapter = plus.android.importClass('android.bluetooth.BluetoothAdapter')
return BluetoothAdapter.getDefaultAdapter()
}
function getActivity () {
return typeof plus !== 'undefined' ? plus.android.runtimeMainActivity() : null
}
function showToast (msg) {
try {
const activity = getActivity()
if (activity) {
const Toast = plus.android.importClass('android.widget.Toast')
Toast.makeText(activity, String(msg), Toast.LENGTH_SHORT).show()
}
} catch (_) {}
}
function getInvoke () {
return typeof plus !== 'undefined' && plus.android ? plus.android.invoke : null
}
function getMyUuid () {
if (typeof plus === 'undefined' || !plus.android) return null
return plus.android.importClass('java.util.UUID').fromString('00001101-0000-1000-8000-00805F9B34FB')
}
let btSocket = null
let btInStream = null
let btOutStream = null
let btFindReceiver = null
// #endif
var blueToothTool = {
state: { bluetoothEnable: false, readThreadState: false },
shortToast (msg) {
// #ifdef APP-PLUS
showToast(msg)
// #endif
},
getBluetoothStatus () {
// #ifdef APP-PLUS
const btAdapter = getAdapter()
return btAdapter != null && btAdapter.isEnabled()
// #endif
return false
},
/** 获取已配对设备（含 Virtual BT Printer / D320FAX） */
getPairedDevices () {
// #ifdef APP-PLUS
const pairedDevices = []
try {
const btAdapter = getAdapter()
if (!btAdapter || !btAdapter.isEnabled()) {
this.shortToast('Bluetooth is off')
return pairedDevices
}
const bonded = btAdapter.getBondedDevices()
if (!bonded) return pairedDevices
const inv = getInvoke()
if (!inv) return pairedDevices
const it = inv(bonded, 'iterator')
while (inv(it, 'hasNext')) {
const device = inv(it, 'next')
const deviceType = inv(device, 'getType')
const deviceId = inv(device, 'getAddress')
let deviceName = inv(device, 'getName')
if (deviceName == null) deviceName = ''
deviceName = String(deviceName).trim() || 'Unknown Device'
let typeStr = 'unknown'
if (deviceType === 1) typeStr = 'classic'
else if (deviceType === 2) typeStr = 'ble'
else if (deviceType === 3) typeStr = 'dual'
pairedDevices.push({ name: deviceName, deviceId: String(deviceId), type: typeStr })
}
} catch (e) {
console.error('getPairedDevices error:', e)
}
return pairedDevices
// #endif
return []
},
/** 经典蓝牙扫描（发现未配对设备，如 d320fax_295c）— 不过滤任何设备 */
startClassicDiscovery (onDeviceFound, onDiscoveryFinished) {
// #ifdef APP-PLUS
const btAdapter = getAdapter()
const activity = getActivity()
if (!btAdapter || !btAdapter.isEnabled() || !activity) return
if (btFindReceiver) {
try { activity.unregisterReceiver(btFindReceiver) } catch (_) {}
btFindReceiver = null
}
if (btAdapter.isDiscovering()) btAdapter.cancelDiscovery()
const BluetoothAdapter = plus.android.importClass('android.bluetooth.BluetoothAdapter')
const BluetoothDevice = plus.android.importClass('android.bluetooth.BluetoothDevice')
const IntentFilter = plus.android.importClass('android.content.IntentFilter')
const inv = getInvoke()
btFindReceiver = plus.android.implements('io.dcloud.android.content.BroadcastReceiver', {
onReceive (context, intent) {
const action = intent.getAction()
if (BluetoothDevice.ACTION_FOUND === action) {
const device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)
if (!device) return
const deviceType = inv(device, 'getType')
const deviceId = String(inv(device, 'getAddress') || '')
let deviceName = inv(device, 'getName')
if (deviceName == null) deviceName = ''
deviceName = String(deviceName).trim() || 'Unknown Device'
let typeStr = 'unknown'
if (deviceType === 1) typeStr = 'classic'
else if (deviceType === 2) typeStr = 'ble'
else if (deviceType === 3) typeStr = 'dual'
if (onDeviceFound) onDeviceFound({ name: deviceName, deviceId, type: typeStr })
}
if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED === action) {
try { activity.unregisterReceiver(btFindReceiver) } catch (_) {}
btFindReceiver = null
if (onDiscoveryFinished) onDiscoveryFinished()
}
},
})
const filter = new IntentFilter()
filter.addAction(BluetoothDevice.ACTION_FOUND)
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)
activity.registerReceiver(btFindReceiver, filter)
btAdapter.startDiscovery()
// #endif
},
/** 停止经典蓝牙扫描 */
cancelClassicDiscovery () {
// #ifdef APP-PLUS
const btAdapter = getAdapter()
const activity = getActivity()
if (btAdapter && btAdapter.isDiscovering()) btAdapter.cancelDiscovery()
if (btFindReceiver && activity) {
try { activity.unregisterReceiver(btFindReceiver) } catch (_) {}
btFindReceiver = null
}
// #endif
},
/** 连接经典蓝牙设备（含 D320FAX Virtual BT Printer，支持 RFCOMM 回退） */
connDevice (address, callback) {
// #ifdef APP-PLUS
if (btSocket != null) this.closeBtSocket()
this.state.readThreadState = false
const btAdapter = getAdapter()
if (!btAdapter) {
this.shortToast('Bluetooth not available')
if (callback) callback(false)
return false
}
const inv = getInvoke()
const uuid = getMyUuid()
if (!inv || !uuid) {
this.shortToast('Bluetooth not ready')
if (callback) callback(false)
return false
}
try {
const device = inv(btAdapter, 'getRemoteDevice', address)
btSocket = inv(device, 'createRfcommSocketToServiceRecord', uuid)
} catch (e) {
console.warn('createRfcommSocketToServiceRecord failed, try fallback:', e)
try {
const device = inv(btAdapter, 'getRemoteDevice', address)
const cls = inv(device, 'getClass')
const intClass = plus.android.importClass('java.lang.Integer').TYPE
const m = inv(cls, 'getMethod', 'createRfcommSocket', intClass)
btSocket = inv(m, 'invoke', device, 1)
} catch (e2) {
console.error('RFCOMM fallback failed:', e2)
this.shortToast('Connect failed')
if (callback) callback(false)
return false
}
}
try {
inv(btSocket, 'connect')
btInStream = inv(btSocket, 'getInputStream')
btOutStream = inv(btSocket, 'getOutputStream')
this.state.readThreadState = true
this.shortToast('Connected')
if (callback) callback(true)
} catch (e) {
try { btSocket.close() } catch (_) {}
btSocket = null
this.shortToast('Connect failed')
if (callback) callback(false)
return false
}
return true
// #endif
if (callback) callback(false)
return false
},
disConnDevice () {
// #ifdef APP-PLUS
this.closeBtSocket()
this.state.readThreadState = false
this.shortToast('Disconnected')
// #endif
},
closeBtSocket () {
// #ifdef APP-PLUS
this.state.readThreadState = false
if (btSocket) {
try { btSocket.close() } catch (_) {}
btSocket = null
btInStream = null
btOutStream = null
}
// #endif
},
sendByteData (byteData) {
// #ifdef APP-PLUS
if (!btOutStream) {
this.shortToast('Not connected')
return false
}
try {
const CHUNK_SIZE = 4096
for (let i = 0; i < byteData.length; i += CHUNK_SIZE) {
const chunk = byteData.slice(i, i + CHUNK_SIZE)
btOutStream.write(chunk)
}
return true
} catch (e) {
return false
}
// #endif
return false
}
}
export default blueToothTool