Native.js获取监听开关等操作Android蓝牙设备实例代码
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2023-12-03 13:53:22
native.js开启关闭蓝牙
var main = plus.android.runtimemainactivity();
var context = plu...
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