Native.js获取监听开关等操作Android蓝牙设备实例代码

砸漏

发布于 2020-11-05 11:09:58

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发布于 2020-11-05 11:09:58

文章被收录于专栏：恩蓝脚本

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

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原始发表：2020-09-11 ，如有侵权请联系 cloudcommunity@tencent.com 删除

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