Native.js获取监听开关等操作Android蓝牙设备实例代码 Native.js获取监听开关等操作Android蓝牙设备实例代码

时间:2021-03-30 人气:0

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

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