Native.js獲取監聽開關等操作Android藍牙設備實例代碼

2019-10-21 21:38:35

字體：大中小

來源：轉載

供稿：網友

Native.js開啟關閉藍牙

var main = plus.android.runtimeMainActivity();var Context = plus.android.importClass("android.content.Context");var BManager = main.getSystemService(Context.BLUETOOTH_SERVICE);plus.android.importClass(BManager);//引入相關的method函數var BAdapter = BManager.getAdapter();plus.android.importClass(BAdapter);//引入相關的method函數，這樣之后才會有isEnabled函數支持if(!BAdapter.isEnabled()) {BAdapter.enable();}

Native.js監聽藍牙開關狀態

var main = plus.android.runtimeMainActivity();var BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter");var BAdapter = new BluetoothAdapter.getDefaultAdapter();var resultDiv = document.getElementById('output');var receiver=plus.android.implements('io.dcloud.android.content.BroadcastReceiver', {onReceive: function(context, intent) { //實現onReceiver回調函數 plus.android.importClass(intent); console.log(intent.getAction()); resultDiv.textContent += '/nAction :' + intent.getAction(); main.unregisterReceiver(receiver); }});var IntentFilter = plus.android.importClass('android.content.IntentFilter');var filter = new IntentFilter();filter.addAction(BAdapter.ACTION_STATE_CHANGED); //監聽藍牙開關main.registerReceiver(receiver, filter); //注冊監聽if (!BAdapter.isEnabled()) { BAdapter.enable(); //啟動藍牙}else{ BAdapter.disable();}

Native.js獲取藍牙設備列表

unction bluetooth_list(){var main = plus.android.runtimeMainActivity();var Context = plus.android.importClass("android.content.Context");var lists = BAdapter.getBondedDevices();plus.android.importClass(lists);var resultDiv = document.getElementById('bluetooth_list');var iterator = lists.iterator();plus.android.importClass(iterator);while (iterator.hasNext()) {var d = iterator.next();plus.android.importClass(d);console.log(d.getAddress());}}

Native.js藍牙連接票據打印機

測試機：佳博PT-280便攜打印機
手機：華為低端
功能：掃描周圍藍牙設備加入列表，點擊未配對設備，自動配對設備，點擊已配對設備，進行打印測試

html頁面代碼

<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <script src="js/pr.js"></script> </head> <body> <div> <p><input id="bt1" type="button" value="搜索設備" onclick="searchDevices('a')"></p> </div> <div> 未配對藍牙設備 <ul id="list1"> </ul> </div> <div> 已配對藍牙設備 <ul id="list2"> </ul> </div> </body></html>

Js文件

//address=""搜索藍牙//address=設備mac地址，自動配對給出mac地址的設備function searchDevices(address) { //注冊類 var main = plus.android.runtimeMainActivity(); var IntentFilter = plus.android.importClass("android.content.IntentFilter"); var BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter"); var BluetoothDevice = plus.android.importClass("android.bluetooth.BluetoothDevice"); var BAdapter = BluetoothAdapter.getDefaultAdapter(); console.log("開始搜索設備"); var filter = new IntentFilter(); var bdevice = new BluetoothDevice(); var on = null; var un = null; var vlist1 = document.getElementById("list1"); //注冊容器用來顯示未配對設備 vlist1.innerHTML = ""; //清空容器 var vlist2 = document.getElementById("list2"); //注冊容器用來顯示未配對設備 vlist2.innerHTML = ""; //清空容器 var button1 = document.getElementById("bt1"); button1.disabled=true; button1.value="正在搜索請稍候"; BAdapter.startDiscovery(); //開啟搜索 var receiver; receiver = plus.android.implements("io.dcloud.android.content.BroadcastReceiver", { onReceive: function(context, intent) { //實現onReceiver回調函數 plus.android.importClass(intent); //通過intent實例引入intent類，方便以后的‘.'操作 console.log(intent.getAction()); //獲取action if(intent.getAction() == "android.bluetooth.adapter.action.DISCOVERY_FINISHED"){ main.unregisterReceiver(receiver);//取消監聽 button1.disabled=false; button1.value="搜索設備"; console.log("搜索結束"); }else{ BleDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); //判斷是否配對 if (BleDevice.getBondState() == bdevice.BOND_NONE) { console.log("未配對藍牙設備：" + BleDevice.getName() + " " + BleDevice.getAddress()); //參數如果跟取得的mac地址一樣就配對 if (address == BleDevice.getAddress()) {  if (BleDevice.createBond()) { //配對命令.createBond()  console.log("配對成功");  var li2 = document.createElement("li"); //注冊  li2.setAttribute("id", BleDevice.getAddress()); //打印機mac地址  li2.setAttribute("onclick", "print(id)"); //注冊click點擊列表進行打印  li2.innerText = BleDevice.getName();  vlist2.appendChild(li2);  } } else {  if(BleDevice.getName() != on ){ //判斷防止重復添加  var li1 = document.createElement("li"); //注冊  li1.setAttribute("id", BleDevice.getAddress()); //打印機mac地址  li1.setAttribute("onclick", "searchDevices(id)"); //注冊click點擊列表進行配對  on = BleDevice.getName();  li1.innerText = on;  vlist1.appendChild(li1);  } } } else { if(BleDevice.getName() != un ){ //判斷防止重復添加 console.log("已配對藍牙設備：" + BleDevice.getName() + " " + BleDevice.getAddress()); var li2 = document.createElement("li"); //注冊 li2.setAttribute("id", BleDevice.getAddress()); //打印機mac地址 li2.setAttribute("onclick", "print(id)"); //注冊click點擊列表進行打印 un = BleDevice.getName();  li2.innerText = un; vlist2.appendChild(li2);} }} } }); filter.addAction(bdevice.ACTION_FOUND); filter.addAction(BAdapter.ACTION_DISCOVERY_STARTED); filter.addAction(BAdapter.ACTION_DISCOVERY_FINISHED); filter.addAction(BAdapter.ACTION_STATE_CHANGED); main.registerReceiver(receiver, filter); //注冊監聽}var device = null, BAdapter = null, BluetoothAdapter = null, uuid = null, main = null, bluetoothSocket = null;function print(mac_address) { if (!mac_address) { mui.toast("請選擇藍牙打印機"); return; } main = plus.android.runtimeMainActivity(); BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter"); UUID = plus.android.importClass("java.util.UUID"); uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); BAdapter = BluetoothAdapter.getDefaultAdapter(); device = BAdapter.getRemoteDevice(mac_address); plus.android.importClass(device); bluetoothSocket = device.createInsecureRfcommSocketToServiceRecord(uuid); plus.android.importClass(bluetoothSocket); if (!bluetoothSocket.isConnected()) { console.log("檢測到設備未連接，嘗試連接...."); bluetoothSocket.connect(); } console.log("設備已連接"); if (bluetoothSocket.isConnected()) { var outputStream = bluetoothSocket.getOutputStream(); plus.android.importClass(outputStream); var string = "打印測試/r/n"; var bytes = plus.android.invoke(string, "getBytes", "gbk"); outputStream.write(bytes); outputStream.flush(); device = null //這里關鍵 bluetoothSocket.close(); //必須關閉藍牙連接否則意外斷開的話打印錯誤 }}

以上是針對Native.js對Android藍牙設備的操作實例代碼，如果你想了解Native.js的其它實例代碼或原生的Android藍牙操作方法請查看下面的相關鏈接

注：相關教程知識閱讀請移步到Android開發頻道。

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