小编典典

快速使用非NS_ENUM Objective-C枚举

swift

我正在使用wahoo Fitness API,它定义了以下Objective-C枚举:

typedef enum
{
    /** No active connection. */
    WF_SENSOR_CONNECTION_STATUS_IDLE,
    /** The connection is in process of being established. */
    WF_SENSOR_CONNECTION_STATUS_CONNECTING,
    /** The sensor connection is established and active. */
    WF_SENSOR_CONNECTION_STATUS_CONNECTED,
    /** The connection was interrupted (usually occurs when fisica is disconnected). */
    WF_SENSOR_CONNECTION_STATUS_INTERRUPTED,
    /** The connection is in process of being disconnected. */
    WF_SENSOR_CONNECTION_STATUS_DISCONNECTING,

} WFSensorConnectionStatus_t;

我找不到快速使用它的方法。我首先尝试对其进行切换/操作,但未成功。我正要继续进行以下操作:

var connState : WFSensorConnectionStatus_t = WF_SENSOR_CONNECTION_STATUS_IDLE
...
if( connState == WF_SENSOR_CONNECTION_STATUS_IDLE){

但是它不能编译:

'WFSensorConnectionStatus_t' is not convertible to 'NSObject'

任何解决方法?我阅读使用WFSensorConnectionStatus_t.WF_SENSOR_CONNECTION_STATUS_IDLEWF_SENSOR_CONNECTION_STATUS_IDLE.value但在xcode
beta-4中不起作用。


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2020-07-07

共1个答案

小编典典

如您所说,从.beta 4开始,使用.value获取基础整数的解决方法不再起作用。

不幸的是an enum不能从Objective-C转移到Swift,它必须是an NS_ENUM

我在一个需要enum从Objective-C框架中进行移植并在Swift中使用它的项目中,具有与您相同的设置。

我所做的解决方法是创建一个包含的Objective-C类别,NS_ENUM然后将值从框架enum传递到自己的NS_ENUM

将类别导入桥接头中,您应该可以像平常一样使用enum

像这样:

typedef NS_ENUM(NSUInteger, ConnectionStatus) {
    ConnectionStatusIdle
}

- (ConnectionStatus)connectionStatus {
    if [self getConnectionStatus] == WF_SENSOR_CONNECTION_STATUS_IDLE {
        return ConnectionStatusIdle
    }
}

然后,您应该可以像这样使用它:

switch myObject.connectionStatus() {
    case .Idle:
        // do something
        break
}
2020-07-07