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   源码介绍

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package com.example.admin.myapplication;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements SensorEventListener{
    private Button start,stop;
    private TextView show;
    private SensorManager sensorManager;
    private Sensor s_acce;
    private  static boolean isStart=false;//用于控制传感器注册的布尔值

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        start=findViewById(R.id.start);
        stop=findViewById(R.id.stop);
        show=findViewById(R.id.show);
        sensorManager=(SensorManager)getSystemService(SENSOR_SERVICE);
        s_acce=sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

        start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                isStart=true;//开启
                onResume();
            }
        });

        stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                isStart=false;//关闭
                onPause();
                show.setText("等待指令");
            }
        });
    }


    @Override
    protected void onResume() {
        super.onResume();
        if(isStart) {
            sensorManager.registerListener(this, s_acce, SensorManager.SENSOR_DELAY_NORMAL);//注册
        }
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        float x=event.values[0];
        float y=event.values[1];
        float z=event.values[2];
        if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){
            show.setText("加速度：\n" "x轴:" x "\ny轴:" y "\nz轴:" z);
        }
    }

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

    }

    @Override
    protected void onPause() {
        super.onPause();
        sensorManager.unregisterListener(this);//取消注册
    }
}