<uses-feature android:name="android.hardware.sensor.stepcounter"/>
 <uses-feature android:name="feature:android.hardware.sensor.stepdetector"/>

package com.example.bushu_chuanganqi;

        import android.app.Activity;
        import android.content.Context;
        import android.hardware.Sensor;
        import android.hardware.SensorEvent;
        import android.hardware.SensorEventListener;
        import android.hardware.SensorManager;
        import android.os.Bundle;
        import android.widget.TextView;

public class MainActivity extends Activity {
    private TextView mStepTV;
    private SensorManager mSensorManager;
    private MySensorEventListener mListener;
    private int mStepDetector = 0;  // 自应用运行以来STEP_DETECTOR检测到的步数
    private int mStepCounter = 0;   // 自系统开机以来STEP_COUNTER检测到的步数

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mStepTV = (TextView)findViewById(R.id.tv_step);
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        mListener = new MySensorEventListener();
    }

    @Override
    protected void onResume() {
        super.onResume();
        mSensorManager.registerListener(mListener, mSensorManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR),
                SensorManager.SENSOR_DELAY_NORMAL);
        mSensorManager.registerListener(mListener, mSensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER),
                SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onPause() {
        super.onPause();
        mSensorManager.unregisterListener(mListener);
    }

    class MySensorEventListener implements SensorEventListener {
        @Override
        public void onSensorChanged(SensorEvent event) {
            System.out.println("@@@:"+event.sensor.getType()+"--"+Sensor.TYPE_STEP_DETECTOR+"--"+Sensor.TYPE_STEP_COUNTER);
            if (event.sensor.getType() == Sensor.TYPE_STEP_DETECTOR) {
                if (event.values[0] == 1.0f) {
                    mStepDetector++;
                }
            } else if (event.sensor.getType() == Sensor.TYPE_STEP_COUNTER) {
                mStepCounter = (int) event.values[0];
            }

                String desc = String.format("设备检测到您当前走了%d步，自开机以来总数为%d步", mStepDetector, mStepCounter);
            mStepTV.setText(desc);
        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/tv_step"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="走一走，看看有什么"
        android:textSize="20sp" />

</LinearLayout>