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安卓Native.js蓝牙连接票据打印机完整代码已测试修改

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
先上html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="https://ask.dcloud.net.cn/js/pr.js"></script>
</head>
<body>
<p><input type="button" value="搜索设备" onclick="searchDevices('a')"></p>
</button>
</div>
<div>
未配对蓝牙设备
<ul>
</ul>
</div>
<div>
已配对蓝牙设备
<ul>
</ul>
</div>
</body>
</html>

下面是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
}
}

回答

炫意HTML5 » 安卓Native.js蓝牙连接票据打印机完整代码已测试修改

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