Android传感器之光照传感器

package com.example.illumination_sensor;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.widget.TextView;

import android.widget.Toast;

/**

*

*

* 光照传感器

*

* @author pengxiaolong

*

*/

public class MainActivity extends Activity {

       

        private SensorManager sensorManager;

       

        private Sensor illuminationSensor;

       

        private TextView tv_g;

       

        private TextView tv_info;

        @Override

        protected void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

                setContentView(R.layout.main);

                View_init();

                pojectinit();

        }

        @Override

        public boolean onCreateOptionsMenu(Menu menu) {

                // Inflate the menu; this adds items to the action bar if it is present.

                getMenuInflater().inflate(R.menu.main, menu);

                return true;

        }

        /**

         * 对象的初始化

         */

        private void pojectinit(){

                sensorManager=(SensorManager) getSystemService(SENSOR_SERVICE);

                illuminationSensor=sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);

               

                if(illuminationSensor==null){

                        Toast.makeText(this, "您的设备沾不支持该功能！", 0).show();

                }else{

                       

                String str="\n名字："+illuminationSensor.getName()+"\n电池："+illuminationSensor.getPower()+"\n类型："+illuminationSensor.getType()+"\nVendor:"+illuminationSensor.getVendor()+"\n版本："+illuminationSensor.getVersion()+"\n幅度："+illuminationSensor.getMaximumRange();

                tv_info.setText(str);

               

                }

                sensorManager.registerListener(sensorEventListener, illuminationSensor, SensorManager.SENSOR_DELAY_NORMAL);

        }

       

        /**

         * view的初始化

         */

        private void View_init()

        {

                tv_g=(TextView) this.findViewById(R.id.tv_g);

                tv_info=(TextView) this.findViewById(R.id.info);

               

               

        }

       

       

       

        @Override

        protected void onDestroy() {

                // TODO Auto-generated method stub

                super.onDestroy();

                sensorManager.unregisterListener(sensorEventListener);

        }

       

       

        /**

         * 监听器

         */

        private SensorEventListener sensorEventListener=new SensorEventListener() {

               

                @Override

                public void onSensorChanged(SensorEvent event) {

                        // TODO Auto-generated method stub

                        float[] values=event.values;

                       

                        tv_g.setText("光照为："+values[0]);

                       

                }

               

                @Override

                public void onAccuracyChanged(Sensor sensor, int accuracy) {

                        // TODO Auto-generated method stub

                       

                }

        };

       

}