android开发分享android实现手机传感器调用

  package com.bobo.study.study_5_1;     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.view.menu;  import android.view.menuitem;  import android.view.view;  import android.widget.button;  import android.widget.textview;  import android.widget.toast;     import java.util.list;  //1,获得sensormanager对象  //2,获得想要的sensor对象  //3,绑定监听器  public class mainactivity extends activity implements view.onclicklistener{   button findbut,accelerationbut,lightbut,orientationbut,proximitybut;   sensormanager sensormanager;   textview text,acctext,luxtext;   float gravity[]=new float[3];   float linear_acceleration[]=new float[3];   @override   protected void oncreate(bundle savedinstancestate) {    super.oncreate(savedinstancestate);    setcontentview(r.layout.activity_main);       findbut=(button)findviewbyid(r.id.findbut);    findbut.setonclicklistener(this);    lightbut=(button)findviewbyid(r.id.lightbut);    lightbut.setonclicklistener(this);    accelerationbut=(button)findviewbyid(r.id.accelerationbut);    accelerationbut.setonclicklistener(this);    orientationbut=(button)findviewbyid(r.id.orientationbut);    orientationbut.setonclicklistener(this);    proximitybut=(button)findviewbyid(r.id.proximitybut);    proximitybut.setonclicklistener(this);       text=(textview)findviewbyid(r.id.text);    acctext=(textview)findviewbyid(r.id.acctext);    luxtext=(textview)findviewbyid(r.id.luxtext);       //获得传感器管理器对象    sensormanager=(sensormanager)getsystemservice(context.sensor_service);   }      @override   public void onclick(view v) {    if(v==findbut){     //获取手机上所有传感器的列表     list<sensor> sensors=sensormanager.getsensorlist(sensor.type_all);     for(sensor sensor:sensors){      system.out.println(sensor.getname());     }    }else if(v==lightbut){     //得到默认的加速度传感器     sensor lightsensor=sensormanager.getdefaultsensor(sensor.type_light);     //绑定监听器（上下文接口，要监听的传感器，传感器采样率<时间间隔>）,返回结果     boolean res=sensormanager.registerlistener(new lightsensorlistener(),lightsensor,sensormanager.sensor_delay_normal);     toast.maketext(this,"绑定光线传感器："+res,toast.length_long).show();    }    else if(v==accelerationbut){     sensor accelerometersensor=sensormanager.getdefaultsensor(sensor.type_accelerometer);     boolean res=sensormanager.registerlistener(new accerationsensorlistener(),accelerometersensor,sensormanager.sensor_delay_normal);     toast.maketext(this,"绑定加速度传感器："+res,toast.length_long).show();    }else if(v==orientationbut){     sensor orientationsensor=sensormanager.getdefaultsensor(sensor.type_orientation);     boolean res=sensormanager.registerlistener(new orientaationlistener(),orientationsensor,sensormanager.sensor_delay_normal);     toast.maketext(this,"绑定方向传感器："+res,toast.length_long).show();    }    else if(v==proximitybut){     sensor proximitysensor=sensormanager.getdefaultsensor(sensor.type_proximity);     boolean res=sensormanager.registerlistener(new proximitylistener(),proximitysensor,sensormanager.sensor_delay_normal);     toast.maketext(this,"绑定距离传感器："+res,toast.length_long).show();    }   }      public class lightsensorlistener implements sensoreventlistener{    @override    //传感器的数据被打包成event，主要的检测数据放在enent.values[]数组中    public void onsensorchanged(sensorevent event) {     system.out.println(event.timestamp);//时间戳     system.out.println(event.sensor.getresolution());//分辨率（能识别出最小数值）     system.out.println(event.accuracy);//精度（等级）     system.out.println(event.values[0]);//光线强度    }    @override    //传感器精度变化时调用这个函数    public void onaccuracychanged(sensor sensor, int accuracy) {}   }      public class accerationsensorlistener implements sensoreventlistener{    @override    public void onsensorchanged(sensorevent event) {     final float alpha=0.8f;        //event.values[0]x轴加速度，负方向为正     //event.values[1]y轴加速度，负方向为正     //event.values[2]z轴加速度，负方向为正     gravity[0]=alpha*gravity[0]+(1-alpha)*event.values[0];     gravity[1]=alpha*gravity[1]+(1-alpha)*event.values[1];     gravity[2]=alpha*gravity[2]+(1-alpha)*event.values[2];        linear_acceleration[0]=event.values[0]-gravity[0];     linear_acceleration[1]=event.values[1]-gravity[1];     linear_acceleration[2]=event.values[2]-gravity[2];        //通过以上公式可以抛去三个方向上的重力加速度，只剩下纯加速度     text.settext(linear_acceleration[0] + "");     acctext.settext(linear_acceleration[1] + "");     luxtext.settext(linear_acceleration[2] + "");    }    @override    public void onaccuracychanged(sensor sensor, int accuracy) {}   }      public class orientaationlistener implements sensoreventlistener{    @override    public void onsensorchanged(sensorevent event) {     //（需要手机屏幕向上，向下的话南北会反掉）设备绕z轴旋转，y轴正方向与地磁北极方向的夹角，顺时针方向为正，范围【0，180】     float azimuth=event.values[0];     //设备绕x轴旋转的角度，当z轴向y轴正方向旋转时为正，反之为负，范围【-180,180】     float pitch=event.values[1];     //设备绕y轴旋转的角度，当z轴向x轴正方向旋转时为负，反之为正，范围【-90,90】     float roll=event.values[2];        text.settext(azimuth+"");     acctext.settext(pitch +"");     luxtext.settext(roll+"");    }    @override    public void onaccuracychanged(sensor sensor, int accuracy) {}   }      public class proximitylistener implements sensoreventlistener{    @override    public void onsensorchanged(sensorevent event) {     //距离传感器测试手机屏幕距离别的物体的记录，只有两个值：0和5     //距离很近时为0，否则为5     system.out.println(event.values[0]+"");    }    @override    public void onaccuracychanged(sensor sensor, int accuracy) {}   }            @override   public boolean oncreateoptionsmenu(menu menu) {    // inflate the menu; this adds items to the action bar if it is present.    getmenuinflater().inflate(r.menu.menu_main, menu);    return true;   }   @override   public boolean onoptionsitemselected(menuitem item) {    // handle action bar item clicks here. the action bar will    // automatically handle clicks on the home/up button, so long    // as you specify a parent activity in androidmanifest.xml.    int id = item.getitemid();    //noinspection simplifiableifstatement    if (id == r.id.action_settings) {     return true;    }    return super.onoptionsitemselected(item);   }  }