【Mac/iOS】解决CoreBluetooth中Characteristic的Properties显示问题

最新推荐文章于 2024-04-07 08:16:57 发布

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本文介绍了一种通过CBCharacteristicProperties获取并解析蓝牙特性权限的方法。利用Swift语言实现了一个实用的函数，该函数能够读取蓝牙特性对象的属性，并将其转换为易于理解的字符串形式。

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项目中希望能显示Characteristic的所有Properties，在外设管理器中，CBPeripheral类并未提供其显示方法，但在CBCharacteristic中含有.properties属性值。因此可以通过获取属性值对比系统定义的数值以获取其Properties的功能。

代码如下，直接复制代码到工程，调用即可。

使用方法:

// 已有 CBPeripheral  myCharacteristic
NSLog(""Properties:\(propertiesString(properties: myCharacteristic.properties)!) \n")

代码:

   //显示属性权限
   func propertiesString(properties: CBCharacteristicProperties)->(String)!{
       var propertiesReturn : String = ""

       if (properties.rawValue & CBCharacteristicProperties.broadcast.rawValue) != 0 {
           propertiesReturn += "broadcast|"
       }
       if (properties.rawValue & CBCharacteristicProperties.read.rawValue) != 0 {
           propertiesReturn += "read|"
       }
       if (properties.rawValue & CBCharacteristicProperties.writeWithoutResponse.rawValue) != 0 {
           propertiesReturn += "write without response|"
       }
       if (properties.rawValue & CBCharacteristicProperties.write.rawValue) != 0 {
           propertiesReturn += "write|"
       }
       if (properties.rawValue & CBCharacteristicProperties.notify.rawValue) != 0 {
           propertiesReturn += "notify|"
       }
       if (properties.rawValue & CBCharacteristicProperties.indicate.rawValue) != 0 {
           propertiesReturn += "indicate|"
       }
       if (properties.rawValue & CBCharacteristicProperties.authenticatedSignedWrites.rawValue) != 0 {
           propertiesReturn += "authenticated signed writes|"
       }
       if (properties.rawValue & CBCharacteristicProperties.extendedProperties.rawValue) != 0 {
           propertiesReturn += "indicate|"
       }
       if (properties.rawValue & CBCharacteristicProperties.notifyEncryptionRequired.rawValue) != 0 {
           propertiesReturn += "notify encryption required|"
       }
       if (properties.rawValue & CBCharacteristicProperties.indicateEncryptionRequired.rawValue) != 0 {
           propertiesReturn += "indicate encryption required|"
       }
       return propertiesReturn
   }