無法將類型 '[RKDataStreamingMask]' 預期參數類型 'RKDataStreamingMask'

Question

的Xcode 7和我的代碼的價值：

func sendSetDataStreamingCommand { 
let mask = RKDataStreamingMask.AccelerometerFilteredAll | 
RKDataStreamingMask.IMUAnglesFilteredAll | 
RKDataStreamingMask.QuaternionAll ; 
self.robot.enableSensors(mask,atStreamingRate:RKStreamingRate.DataStreamingRate10); 
} 

的警告是：

swift Binary operator '|' cannot be applied to two UIViewAutoresizing operands 

然後更改代碼：

func sendSetDataStreamingCommand { 
let mask=[RKDataStreamingMask.AccelerometerFilteredAll, 
RKDataStreamingMask.IMUAnglesFilteredAll, 
RKDataStreamingMask.QuaternionAll] 
self.robot.enableSensors(mask,atStreamingRate:RKStreamingRate.DataStreamingRate10); 
} 

then then warning in last sentence is：

Cannot convert value of type '[RKDataStreamingMask]' to expected argument type 'RKDataStreamingMask' 

請教我該怎麼辦？謝謝。

Answer 1

要聲明一個包含OptionSetType的多個成員的變量，您必須顯式註釋該類型，否則方括號將被視爲一個數組。

let mask : RKDataStreamingMask = [.AccelerometerFilteredAll, .IMUAnglesFilteredAll, .QuaternionAll]