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CoreBluetooth系列教程(六):SwiftyBluetooth的使用 - 宋明的博客
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<h1 class="title">
CoreBluetooth系列教程(六):SwiftyBluetooth的使用
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<a href="http://apolla.cc">宋明</a>
<span style="color: #ccc;">|</span>
<span class="date"><i class="fa fa-calendar-check-o" aria-hidden="true"></i> 2023/03/18</span>
<span class="tran-posted-in">posted in</span>
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<h2><a id="%E7%AE%80%E4%BB%8B" class="anchor" aria-hidden="true"><span class="octicon octicon-link"></span></a>简介</h2>
<p><code>SwiftyBluetooth</code>是<code>Swift</code>中封装<code>CoreBluetooth</code>框架的一个开源库<a href="https://link.juejin.cn?target=https%3A%2F%2Fgithub.com%2Fjordanebelanger%2FSwiftyBluetooth">SwiftyBluetooth</a>,个人觉得比较好用，是对<code>CoreBluetooth</code>的封装，可自行查看代码，下面来讲讲它的使用。</p>
<h2><a id="%E9%A6%96%E5%85%88%E9%9C%80%E8%A6%81%E5%88%A4%E6%96%AD%E8%93%9D%E7%89%99%E6%89%93%E5%BC%80%E7%9A%84%E7%8A%B6%E6%80%81%EF%BC%8C%E8%93%9D%E7%89%99%E6%89%93%E5%BC%80%E4%BA%86%E6%89%8D%E5%8F%AF%E8%BF%9B%E8%A1%8C%E4%B8%8B%E4%B8%80%E6%AD%A5%EF%BC%9A" class="anchor" aria-hidden="true"><span class="octicon octicon-link"></span></a>首先需要判断蓝牙打开的状态，蓝牙打开了才可进行下一步：</h2>
<pre class="line-numbers"><code class="language-swift"> SwiftyBlutooth.asyncState { state in
switch state {
case .poweredOn:
print("蓝牙打开了,去搜索要连接设备")
break
case .poweredOff:
print("蓝牙未打开，添加提示")
break
default:
break
}
}
</code></pre>
<h1><a id="%E7%AC%AC%E4%BA%8C%E6%AD%A5%EF%BC%8C%E6%90%9C%E7%B4%A2%E8%93%9D%E7%89%99%E8%AE%BE%E5%A4%87" class="anchor" aria-hidden="true"><span class="octicon octicon-link"></span></a>第二步，搜索蓝牙设备</h1>
<pre class="line-numbers"><code class="language-swift">// withServiceUUIDs：需要搜索的设备`CBUUID`数组，默认为nil,则搜索附近所有的蓝牙设备，浪费时间，所以最好传入`[CBUUIDConvertible]`
// timeoutAfter 搜索时长
SwiftyBluetooth.scanForPeripherals(withServiceUUIDs: nil, timeoutAfter: 15) { scanResult in
switch scanResult {
case .scanStarted:
// The scan started meaning CBCentralManager scanForPeripherals(...) was called
case .scanResult(let peripheral, let advertisementData, let RSSI):
// 解析`advertisementData`,找到要连接的设备，然后连接设备
self.peripheral = peripheral
case .scanStopped(let error):
// The scan stopped, an error is passed if the scan stopped unexpectedly
}
}
</code></pre>
<h1><a id="%E7%AC%AC%E4%B8%89%E6%AD%A5%EF%BC%8C%E8%BF%9E%E6%8E%A5%E8%AE%BE%E5%A4%87" class="anchor" aria-hidden="true"><span class="octicon octicon-link"></span></a>第三步，连接设备</h1>
<pre class="line-numbers"><code class="language-swift"> guard let peripheral = self.peripheral else { return }
// 开始连接设备
peripheral.connect(withTimeout: time) { result in
switch result {
case .success:
//连接成功,
break
case .failure(let error):
break
}
}
</code></pre>
<p>设备连接成功后，就可以进行readValue、setNotifyValue、writeValue的操作了，有不明白的同学可参考我<a href="https://www.yuque.com/wuniansuogui/lkz693/gzcyw8hamzfq5swn">这篇文章</a>剩余常用的API如下：</p>
<pre class="line-numbers"><code class="language-swift">peripheral.discoverServices(withUUIDs: nil) { result in
switch result {
case .success(let services):
break // An array containing all the services requested
case .failure(let error):
break // A connection error or an array containing the UUIDs of the services that we're not found
}
}
peripheral.discoverCharacteristics(withUUIDs: nil, ofServiceWithUUID: "180A") { result in
// The characteristics discovered or an error if something went wrong.
switch result {
case .success(let services):
break // An array containing all the characs requested.
case .failure(let error):
break // A connection error or an array containing the UUIDs of the charac/services that we're not found.
}
}
</code></pre>
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