根据交互源的 InteractionSourceType,返回 true 可能代表一些等效对象:遥控器上的主按钮、通过手隔空敲击以及运动控制器上的触发器。对于手,“选择-按下”表示用户的食指处于向下位置。对于运动控制器,“选择-按下”表示控制器的食指触发器(如果没有触发器,则为主要的面按钮)已完全按下。请注意,“选择”的语音命令会导致即时按下和释放,因此您无法使用此属性来轮询语音按键 - 而是必须使用 GestureRecognizer 并订阅 Tapped 事件,或者订阅来自 InteractionManager 的 InteractionSourcePressed 事件。
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