Native.js获取监听开关等操作Android蓝牙设备实例代码
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2022-06-19 19:47:24
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
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