有一段时间没有。没有写关于小程序的文章了。3月28日,微信的api又一次新的更新。期待已久的蓝牙api更新。就开始撸一番。
源码地址
1.简述
蓝牙适配器接口是基础库版本 1.1.0 开始支持。
iOS 微信客户端 6.5.6 版本开始支持,Android 客户端暂不支持
蓝牙总共增加了18个api接口。
2.Api分类
搜索类
连接类
通信类
3.API的具体使用
详细见官网:
https://mp.weixin.qq.com/debug/wxadoc/dev/api/bluetooth.html#wxgetconnectedbluethoothdevicesobject
4. 案例实现
4.1 搜索蓝牙设备
/**
* 搜索设备界面
*/
Page({
data: {
logs: [],
list:[],
},
onLoad: function () {
console.log('onLoad')
var that = this;
// const SDKVersion = wx.getSystemInfoSync().SDKVersion || '1.0.0'
// const [MAJOR, MINOR, PATCH] = SDKVersion.split('.').map(Number)
// console.log(SDKVersion);
// console.log(MAJOR);
// console.log(MINOR);
// console.log(PATCH);
// const canIUse = apiName => {
// if (apiName === 'showModal.cancel') {
// return MAJOR >= 1 && MINOR >= 1
// }
// return true
// }
// wx.showModal({
// success: function(res) {
// if (canIUse('showModal.cancel')) {
// console.log(res.cancel)
// }
// }
// })
//获取适配器
wx.openBluetoothAdapter({
success: function(res){
// success
console.log("-----success----------");
console.log(res);
//开始搜索
wx.startBluetoothDevicesDiscovery({
services: [],
success: function(res){
// success
console.log("-----startBluetoothDevicesDiscovery--success----------");
console.log(res);
},
fail: function(res) {
// fail
console.log(res);
},
complete: function(res) {
// complete
console.log(res);
}
})
},
fail: function(res) {
console.log("-----fail----------");
// fail
console.log(res);
},
complete: function(res) {
// complete
console.log("-----complete----------");
console.log(res);
}
})
wx.getBluetoothDevices({
success: function(res){
// success
//{devices: Array[11], errMsg: "getBluetoothDevices:ok"}
console.log("getBluetoothDevices");
console.log(res);
that.setData({
list:res.devices
});
console.log(that.data.list);
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
},
onShow:function(){
},
//点击事件处理
bindViewTap: function(e) {
console.log(e.currentTarget.dataset.title);
console.log(e.currentTarget.dataset.name);
console.log(e.currentTarget.dataset.advertisData);
var title = e.currentTarget.dataset.title;
var name = e.currentTarget.dataset.name;
wx.redirectTo({
url: '../conn/conn?deviceId='+title+'&name='+name,
success: function(res){
// success
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
},
})
4.2连接 获取数据
/**
* 连接设备。获取数据
*/
Page({
data: {
motto: 'Hello World',
userInfo: {},
deviceId: '',
name: '',
serviceId: '',
services: [],
cd20: '',
cd01: '',
cd02: '',
cd03: '',
cd04: '',
characteristics20: null,
characteristics01: null,
characteristics02: null,
characteristics03: null,
characteristics04: null,
result,
},
onLoad: function (opt) {
var that = this;
console.log("onLoad");
console.log('deviceId=' + opt.deviceId);
console.log('name=' + opt.name);
that.setData({ deviceId: opt.deviceId });
/**
* 监听设备的连接状态
*/
wx.onBLEConnectionStateChanged(function (res) {
console.log(`device ${res.deviceId} state has changed, connected: ${res.connected}`)
})
/**
* 连接设备
*/
wx.createBLEConnection({
deviceId: that.data.deviceId,
success: function (res) {
// success
console.log(res);
/**
* 连接成功,后开始获取设备的服务列表
*/
wx.getBLEDeviceServices({
// 这里的 deviceId 需要在上面的 getBluetoothDevices中获取
deviceId: that.data.deviceId,
success: function (res) {
console.log('device services:', res.services)
that.setData({ services: res.services });
console.log('device services:', that.data.services[1].uuid);
that.setData({ serviceId: that.data.services[1].uuid });
console.log('--------------------------------------');
console.log('device设备的id:', that.data.deviceId);
console.log('device设备的服务id:', that.data.serviceId);
/**
* 延迟3秒,根据服务获取特征
*/
setTimeout(function () {
wx.getBLEDeviceCharacteristics({
// 这里的 deviceId 需要在上面的 getBluetoothDevices
deviceId: that.data.deviceId,
// 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获JLJK NCBJCBOB]BKb99leyB[OH^X[Y\[Y[H/yfaZZ[Z[[^][KNKN
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