从文档到https://github.com/Aminoid/react-native-activity-recognition

import ActivityRecognition from 'react-native-activity-recognition'

...

// Subscribe to updates on mount

  useEffect(() => {
    ActivityRecognition.subscribe(detectedActivities => {
      const mostProbableActivity = detectedActivities.sorted[0];
      console.log(mostProbableActivity);
    });

// Stop activity detection and remove the listener on unmount

    return ActivityRecognition.stop();
  });

...

// Start activity detection

const detectionIntervalMillis = 1000
ActivityRecognition.start(detectionIntervalMillis)

detectedActivities是对象[{type: "WALKING", confidence: 2}]的数组，其中类型可以是IOS：

• 跑步
• 步行
• 固定式
• 汽车
• 循环
• 不详