Android传感器之姿态传感器

package com.example.attitude_sensor;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;
import android.widget.Toast;

/**
* 姿态传感器
*
* @author pengxiaolong
*
*/
public class MainActivity extends Activity {


        SensorManager sensorManager; //管理器对象

        Sensor accSensor; //传感器对象

        TextView tv_X;

        TextView tv_Y;

        TextView tv_Z;

        TextView tv_info;


       @Override
       protected void onCreate(Bundle savedInstanceState) {
               super .onCreate(savedInstanceState);
               setContentView(R.layout.main);
               View_init();
               projectinit();
       }

       @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 projectinit(){

               sensorManager=(SensorManager) getSystemService(SENSOR_SERVICE);
               accSensor=sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
               if (accSensor== null ){
                       Toast.makeText( this , "您的设备不支持该功能！" , 0 ).show();
               } else {
               String str= "\n名字：" +accSensor.getName()+ "\n电池：" +accSensor.getPower()+ "\n类型：" +accSensor.getType()+ "\nVendor:" +accSensor.getVendor()+ "\n版本：" +accSensor.getVersion()+ "\n幅度：" +accSensor.getMaximumRange();

               tv_info.setText(str);
               }

               /**
                * 注册监听器
                */
               sensorManager.registerListener(sensoreventlistener, accSensor, SensorManager.SENSOR_DELAY_NORMAL);

       }

       /**
        * 小组件的初始化
        */
       private void View_init(){

               tv_info=(TextView) this .findViewById(R.id.info);
               tv_X=(TextView) this .findViewById(R.id.tvX);
               tv_Y=(TextView) this .findViewById(R.id.tvY);
               tv_Z=(TextView) this .findViewById(R.id.tvZ);


       }





       @Override
       protected void onDestroy() {
               // TODO Auto-generated method stub
               super .onDestroy();
               /**
                * 解除注册
                */
               sensorManager.unregisterListener(sensoreventlistener);

       }



       private Handler handler= new Handler(){

               @Override
               public void handleMessage(Message msg) {
                       // TODO Auto-generated method stub

                       switch (msg.what){

                       case CHANGE:

                               float [] valuse=( float []) msg.obj;


                               tv_X.setText( "手机沿Yaw轴转过的角度为：" +Float.toString(valuse[ 0 ]));
                               tv_Y.setText( "手机沿Pitch轴转过的角度为：" +Float.toString(valuse[ 1 ]));
                               tv_Z.setText( "手机沿Roll轴转过的角度为：" +Float.toString(valuse[ 2 ]));
                               break ;
                       }
                       super .handleMessage(msg);
               }



       };
       /**
        * 传感器的监听
        */
       private SensorEventListener sensoreventlistener= new SensorEventListener() {

               @Override
               public void onSensorChanged(SensorEvent event) {
                       // TODO Auto-generated method stub

                       float [] valuse=event.values;
                       Message message= new Message();
                       message.obj=valuse;
                       message.what=CHANGE;
                       handler.sendMessage(message);


               }

               @Override
               public void onAccuracyChanged(Sensor sensor, int accuracy) {
                       // TODO Auto-generated method stub


               }
       };

       private static final byte CHANGE= 0x1 ;

}