今天做了一个小Demo，主要是检测手机传个器种类个数，代码如下。

 

package com.example.sensordemo;import java.util.List;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.text.method.ScrollingMovementMethod;import android.view.Menu;import android.widget.TextView;public class MainActivity extends Activity {    private TextView tv_view;    private Sensor sensor;    private float x, y, z;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        init();    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }    private void init() {        tv_view = (TextView) this.findViewById(R.id.tv_view);        /** 设置实例化滚动方法 */        tv_view.setMovementMethod(ScrollingMovementMethod.getInstance());                // 从系统服务中获得传感器管理器        SensorManager sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);        // 从传感器管理器中获得全部的传感器列表        List
      
        allSensors = sm.getSensorList(Sensor.TYPE_ALL);        // 显示有多少个传感器        tv_view.setText("经检测手机有" + "【" + allSensors.size() + "】" + "个传感器。"                + "\n" + "他们分别是：\n");        // 显示每个传感器的具体信息        for (Sensor s : allSensors) {            String temp = "\n" + "设备名称:" + s.getName() + "\n" + "设备版本:"                    + s.getVersion() + "\n" + "设备供应商:" + s.getVendor() + "\n";            switch (s.getType()) {            case Sensor.TYPE_ACCELEROMETER:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + "加速度传感器:" + temp);                break;            case Sensor.TYPE_GRAVITY:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 重力传感器:" + temp);                break;            case Sensor.TYPE_GYROSCOPE:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 陀螺仪传感器:" + temp);                break;            case Sensor.TYPE_LIGHT:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 环境光线传感器:" + temp);                break;            case Sensor.TYPE_LINEAR_ACCELERATION:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 线性加速器:" + temp);                break;            case Sensor.TYPE_MAGNETIC_FIELD:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 电磁场传感器:" + temp);                break;            case Sensor.TYPE_ORIENTATION:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 方向传感器:" + temp);                break;            case Sensor.TYPE_PRESSURE:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 压力传感器:" + temp);                break;            case Sensor.TYPE_PROXIMITY:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 距离传感器:" + temp);                break;            case Sensor.TYPE_ROTATION_VECTOR:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 旋转向量:" + temp);                break;            case Sensor.TYPE_TEMPERATURE:                tv_view.setText(tv_view.getText().toString() + s.getType()                        + " 温度传感器:" + temp);                break;            default:                tv_view.setText(tv_view.getText().toString() + s.getType() + " 未知传感器:"                        + temp);                break;            }        }                // 在title上显示重力传感器的变化         sensor = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);        SensorEventListener lsn = new SensorEventListener() {            @Override            public void onSensorChanged(SensorEvent e) {                // TODO Auto-generated method stub                x = e.values[SensorManager.DATA_X];                y = e.values[SensorManager.DATA_Y];                z = e.values[SensorManager.DATA_Z];                setTitle("x=" + (int) x + "," + "y=" + (int) y + "," + "z="+ (int) z);            }                        @Override            public void onAccuracyChanged(Sensor sensor, int accuracy) {                // TODO Auto-generated method stub            }        };        // 注册listener，第三个参数是检测的精确度           sm.registerListener(lsn, sensor, SensorManager.SENSOR_DELAY_GAME);    }}
      

 

效果图：