- 在IOS设别上调用wx.startBluetoothDevicesDiscovery时，如果以前没连接过这个蓝牙设备，就会出现很难搜索到这个蓝牙设备的情况，我退出小程序再进去搜索的时候就能很快的搜索到，问题就出现在第一个搜索新设备的时候 - 预期表现 - 复现路径 - 提供一个最简复现 Demo // 1、获取本机蓝牙适配器状态 wx.getBluetoothAdapterState({ success(res) { let available = res.available; if (available == false) { wx.showModal({ title: '提示', content: '手机蓝牙不可用，请重启后再试', showCancel: false, success(res) { } }) return; } // 2、发现周边设备 wx.startBluetoothDevicesDiscovery({ services: [], success: function (res) { // console.log('开始搜索周边设备') wx.showLoading({ title: '正在搜索中', }); // 3、获取周边设备 wx.getBluetoothDevices({ success: function (res) { for (let i = 0; i < res.devices.length; i++) { if (lockNum.indexOf('CASZX') >= 0) { var name = res.devices[i].name; if (name == lockNum) { _this.setData({ deviceId: res.devices[i].deviceId }); wx.hideLoading() _this.stopBluetoothDevicesDiscovery(); _this.openLock(flg) break } } else if (app.isMac(lockNum)) { var advertisData = res.devices[i].advertisData; var mac = _this.ab2hex(advertisData); if (mac == lockNum) { _this.setData({ deviceId: res.devices[i].deviceId }); wx.hideLoading() _this.stopBluetoothDevicesDiscovery(); _this.openLock(flg) break } } } }, }) //4 、监听发现设备 wx.onBluetoothDeviceFound(function (devices) { for (let i = 0; i < devices.devices.length; i++) { if (lockNum.indexOf('CASZX') >= 0) { var name = devices.devices[i].name; if (name == lockNum) { _this.setData({ deviceId: devices.devices[i].deviceId }); wx.hideLoading() _this.stopBluetoothDevicesDiscovery(); _this.openLock(flg) break } } else if (app.isMac(lockNum)) { var advertisData = devices.devices[i].advertisData; var mac = _this.ab2hex(advertisData); if (mac == lockNum) { _this.setData({ deviceId: devices.devices[i].deviceId }); wx.hideLoading() _this.stopBluetoothDevicesDiscovery(); _this.openLock(flg) break } } } }) }, complete: function (res) { } }) }, fail: function (res) { console.log(res) } })