如何获取DJI Osmo Mobile的DJIHandheldControllerHardwareState按钮事件？

Question

我已成功将Osmo Mobile手持式控制器注册为委托，并且我通过委托方法收到更新硬件状态更新：

func handheldController(_ controller: DJIHandheldController, didUpdate state: DJIHandheldControllerHardwareState)

但是，录制，快门和模式按钮始终处于空闲状态。如何获取按钮事件的回调？

extension BBDJIOsmoManager: DJIHandheldControllerDelegate {
    func handheldController(_ controller: DJIHandheldController, didUpdate state: DJIHandheldControllerHardwareState) {

        print("did update state")

        if state.modeButton == .singleClick {
            print("mode clicked")
        }

        if state.recordAndShutterButtons == .recordClick {
            print("record clicked")
        }

        if state.recordAndShutterButtons == .shutterClick {
            print("shutter clicked")
        }

        if state.recordAndShutterButtons == .shutterLongClick {
            print("shutter long click")
        }

        if state.zoomSlider == .zoomIn {
            print("zoom in")
        }

        if state.zoomSlider == .zoomOut {
            print("zoom out")
        }
    }
}

我看到控制台打印“ did update state”，但单击模式或记录按钮时没有任何日志。

任何帮助，我将非常感谢！