Native.js获取监听开关等操作Android蓝牙设备实例代码
Native.js开启关闭蓝牙
var main = plus.android.runtimeMainActivity(); var Context = plus.android.importClass("android.content.Context"); var BManager = main.getSystemService(Context.BLUETOOTH_SERVICE); plus.android.importClass(BManager);//引入相关的method函数 var BAdapter = BManager.getAdapter(); plus.android.importClass(BAdapter);//引入相关的method函数,这样之后才会有isEnabled函数支持 if(!BAdapter.isEnabled()) { BAdapter.enable(); }
Native.js监听蓝牙开关状态
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) { //实现onReceiver回调函数 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); //监听蓝牙开关 main.registerReceiver(receiver, filter); //注册监听 if (!BAdapter.isEnabled()) { BAdapter.enable(); //启动蓝牙 }else{ BAdapter.disable(); }
Native.js获取蓝牙设备列表
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蓝牙连接票据打印机
测试机:佳博PT-280便携打印机
手机:华为低端
功能:扫描周围蓝牙设备加入列表,点击未配对设备,自动配对设备,点击已配对设备,进行打印测试
html页面代码
<!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="搜索设备" onclick="searchDevices('a')"></p> </div> <div> 未配对蓝牙设备 <ul id="list1"> </ul> </div> <div> 已配对蓝牙设备 <ul id="list2"> </ul> </div> </body> </html>
Js文件
//address=""搜索蓝牙//address=设备mac地址,自动配对给出mac地址的设备 function searchDevices(address) { //注册类 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("开始搜索设备"); var filter = new IntentFilter(); var bdevice = new BluetoothDevice(); var on = null; var un = null; var vlist1 = document.getElementById("list1"); //注册容器用来显示未配对设备 vlist1.innerHTML = ""; //清空容器 var vlist2 = document.getElementById("list2"); //注册容器用来显示未配对设备 vlist2.innerHTML = ""; //清空容器 var button1 = document.getElementById("bt1"); button1.disabled=true; button1.value="正在搜索请稍候"; BAdapter.startDiscovery(); //开启搜索 var receiver; receiver = plus.android.implements("io.dcloud.android.content.BroadcastReceiver", { onReceive: function(context, intent) { //实现onReceiver回调函数 plus.android.importClass(intent); //通过intent实例引入intent类,方便以后的‘.'操作 console.log(intent.getAction()); //获取action if(intent.getAction() == "android.bluetooth.adapter.action.DISCOVERY_FINISHED"){ main.unregisterReceiver(receiver);//取消监听 button1.disabled=false; button1.value="搜索设备"; console.log("搜索结束"); }else{ BleDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); //判断是否配对 if (BleDevice.getBondState() == bdevice.BOND_NONE) { console.log("未配对蓝牙设备:" + BleDevice.getName() + " " + BleDevice.getAddress()); //参数如果跟取得的mac地址一样就配对 if (address == BleDevice.getAddress()) { if (BleDevice.createBond()) { //配对命令.createBond() console.log("配对成功"); var li2 = document.createElement("li"); //注册 li2.setAttribute("id", BleDevice.getAddress()); //打印机mac地址 li2.setAttribute("onclick", "print(id)"); //注册click点击列表进行打印 li2.innerText = BleDevice.getName(); vlist2.appendChild(li2); } } else { if(BleDevice.getName() != on ){ //判断防止重复添加 var li1 = document.createElement("li"); //注册 li1.setAttribute("id", BleDevice.getAddress()); //打印机mac地址 li1.setAttribute("onclick", "searchDevices(id)"); //注册click点击列表进行配对 on = BleDevice.getName(); li1.innerText = on; vlist1.appendChild(li1); } } } else { if(BleDevice.getName() != un ){ //判断防止重复添加 console.log("已配对蓝牙设备:" + BleDevice.getName() + " " + BleDevice.getAddress()); var li2 = document.createElement("li"); //注册 li2.setAttribute("id", BleDevice.getAddress()); //打印机mac地址 li2.setAttribute("onclick", "print(id)"); //注册click点击列表进行打印 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); //注册监听 } var device = null, BAdapter = null, BluetoothAdapter = null, uuid = null, main = null, bluetoothSocket = null; function print(mac_address) { if (!mac_address) { mui.toast("请选择蓝牙打印机"); 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("检测到设备未连接,尝试连接...."); bluetoothSocket.connect(); } console.log("设备已连接"); if (bluetoothSocket.isConnected()) { var outputStream = bluetoothSocket.getOutputStream(); plus.android.importClass(outputStream); var string = "打印测试\r\n"; var bytes = plus.android.invoke(string, "getBytes", "gbk"); outputStream.write(bytes); outputStream.flush(); device = null //这里关键 bluetoothSocket.close(); //必须关闭蓝牙连接否则意外断开的话打印错误 } }
以上是针对Native.js对Android蓝牙设备的操作实例代码,如果你想了解Native.js的其它实例代码或原生的Android蓝牙操作方法请查看下面的相关链接