vue app混合开发蓝牙串口连接（报错java.io.IOException: read failed, socket might closed or timeout, read ret: -1;at android.bluetooth.BluetoothSocket.connect at js/BluetoothTool.js:329）
我使用的uni-app <template> <view class="bluetooth"> <!-- 发送数据 --> <view class="send" v-if="send_data_onoff"> <view class="uni-textarea"> <textarea placeholder-style="color:#F76260" v-model="send_data_list" placeholder="请输入发送数据"/> <view @tap="send_data" class="fasong">发送</view> </view> </view> <!-- 没有匹配的蓝牙设备 --> <view class="no_match_bluetooth_list" v-if="no_match_list.length!=0"> <view class="h1">已搜索的蓝牙：</view> <block v-for="(item,index) in no_match_list" :key="index"> <view class="uni-list" @tap="search_bluetooth(item.SN)"> <view class="uni-list-cell" hover-class="uni-list-cell-hover"> <view class="uni-list-cell-navigate uni-navigate-right uni-media-list "> <view class="uni-media-list-body"> <view>蓝牙名称:{{item.name}}</view> <view>SN:{{item.SN}}</view> </view> </view> </view> </view> </block> </view> <!-- 已匹配的蓝牙设备 --> <view class="no_match_bluetooth_list" v-if="match_list.length!=0"> <view class="h1">已匹配的蓝牙：</view> <block v-for="(item,index) in match_list" :key="index"> <view class="uni-list" @tap="print(item.SN)"> <view class="uni-list-cell" hover-class="uni-list-cell-hover"> <view class="uni-list-cell-navigate uni-navigate-right uni-media-list "> <view class="uni-media-list-body"> <view>蓝牙名称:{{item.name}}</view> <view>SN:{{item.SN}}</view> </view> </view> </view> </view> </block> </view> <view class="btn"> <view class="btn_1" @tap="open_bluetooth">打开蓝牙</view> <view class="btn_2" @tap="close_bluetooth">关闭蓝牙</view> <view class="btn_3" @tap="search_bluetooth">搜索蓝牙</view> </view> </view> </template> <script> var main, Context, BluetoothManager, BluetoothAdapter, BManager, BAdapter,BluetoothDevice,IntentFilter,bluetoothSocket,device; export default { data() { return { bArray:[],//用于搜索蓝牙去重用的 no_match_list:[],//没有配对的蓝牙列表 match_list:[],//已配对的蓝牙列表 send_data_onoff:false, send_data_list:'',//要发送的数据 }; }, onShow() { //获取android应用Activity对象 main = plus.android.runtimeMainActivity(); Context = plus.android.importClass("android.content.Context"); BManager = main.getSystemService(Context.BLUETOOTH_SERVICE); //蓝牙适配器 BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter"); //蓝牙本地适配器 BAdapter = BluetoothAdapter.getDefaultAdapter(); //蓝牙设备 BluetoothDevice = plus.android.importClass('android.bluetooth.BluetoothDevice'); //过滤器 IntentFilter = plus.android.importClass('android.content.IntentFilter'); }, methods:{ /** * 根据蓝牙地址，连接设备 * @param {Object} address * @return {Boolean} */ print(address){ console.log(address) let that=this uni.showModal({ title: '提示', content: '是连接此蓝牙？', success: function (res) { if (res.confirm) { console.log('用户点击确定'); uni.showLoading({ title: '蓝牙连接中...' }); that.print_bluetooth(address) } } }); }, //连接蓝牙 print_bluetooth(mac_address){ let that=this uni.hideLoading() let UUID = plus.android.importClass("java.util.UUID"); let uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); 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'); // 打开输入发送数据 that.send_data_onoff=true; }, //发送蓝牙数据 send_data(){ let that=this console.log() if (bluetoothSocket.isConnected()) { console.log(22222) var outputStream = bluetoothSocket.getOutputStream(); plus.android.importClass(outputStream); var string = that.send_data_list var bytes = plus.android.invoke(string, 'getBytes', 'gbk');//创建输出流失败 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 } }, open_bluetooth(){ if(!BAdapter.isEnabled()) { BAdapter.enable();//启动蓝牙 uni.showToast({ title: '蓝牙已启动', duration: 2000 }) } }, //关闭蓝牙 close_bluetooth(){ let that =this //关闭蓝牙都把之前的清空 that.no_match_list=[]; that.match_list=[] if (BAdapter.isEnabled()) { BAdapter.disable();//关闭蓝牙 uni.showToast({ title: '蓝牙已关闭', duration: 2000 }) } }, //获取已匹配蓝牙设备 bluetooth_list(){ let that=this //先清空 that.match_list=[] var lists = BAdapter.getBondedDevices(); plus.android.importClass(lists); var iterator = lists.iterator(); plus.android.importClass(iterator); while (iterator.hasNext()) { var d = iterator.next(); plus.android.importClass(d); let arr={ "name": d.getName(), "SN": d.getAddress() } that.match_list.push(arr) } }, //搜索没匹配的蓝牙设备 search_bluetooth(address){ let that=this //判断蓝牙是否开启 if (!BAdapter.isEnabled()) { uni.showToast({ title: '请先打开蓝牙', duration: 3000 }); return } if(address.length!=undefined){ uni.showModal({ title: '提示', content: '是否配对此蓝牙？', success: function (res) { if (res.confirm) { console.log('用户点击确定'); uni.showLoading({ title: '蓝牙匹配中...' }); that.search_pipei(address) } } }); }else{ uni.showLoading({ title: '蓝牙搜索中...' }); that.search_pipei() } }, //搜索和匹配蓝牙 search_pipei(address){ let that=this //获取已匹配的蓝牙 that.bluetooth_list() //每次搜索都把之前的清空 that.bArray=[]; that.no_match_list=[]; var filter = new IntentFilter(); var BDevice = new BluetoothDevice(); BAdapter.startDiscovery(); //开启搜索 var receiver = plus.android.implements('io.dcloud.android.content.BroadcastReceiver', { onReceive: function(context, intent) { //回调 try { plus.android.importClass(intent); //通过intent实例引入intent类 if(intent.getAction() == "android.bluetooth.adapter.action.DISCOVERY_FINISHED") { uni.hideLoading() main.unregisterReceiver(receiver); //取消监听 } else { //从Intent中获取设备对象 BDevice= intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); //配对蓝牙 if (address == BDevice.getAddress()) { if (BDevice.createBond()) { //配对命令.createBond() console.log("配对成功"); uni.hideLoading() } } if(BDevice == null) { main.unregisterReceiver(receiver); //取消监听 uni.hideLoading() //获取已匹配的蓝牙 that.bluetooth_list() return; } var name=BDevice.getAddress()+BDevice.getName(); if(that.bArray.indexOf(name) == -1){ //去重 that.bArray.push(name);//用于去重的 let arr={ "name": BDevice.getName(), "SN": BDevice.getAddress() } that.no_match_list.push(arr) console.log(JSON.stringify(that.no_match_list)) } } } catch(e) { console.error(e); } } }); 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 }, } } </script> <style scoped="scoped" lang="scss"> @import "./Bluetooth.scss"; </style>
css
.bluetooth{ padding: 20upx 20upx 120upx; .h1{ padding: 20upx 0;color: #1482D1;border-top: 1upx solid #EFEFF4; } .btn{ display:flex;position:fixed;bottom:0upx;padding:20upx 10upx;justify-content:space-around;width: 100%;color:#fff;border-top:1px solid #f2f2f2;background-color: #fff; view{ width: 200upx;height: 80upx;line-height:80upx;text-align: center;border-radius:10upx; } .btn_1{ background-color: #009BDE; } .btn_2{ background-color: red; } .btn_3{ background-color: #3CB371; } } .uni-textarea{ textarea{ border: 1px solid #EFEFF4;border-radius: 10px;width: 100%;padding: 10upx;box-sizing: border-box; } .fasong{ width: 100%;padding:15upx 10upx;box-sizing: border-box;border-radius: 10px;background: #1482D1;text-align: center;color: white;margin: 10px 0; } } }
如果报错你可能需要下载一个蓝牙开发助手当服务端
