android实现手机传感器调用

android传感器使用的demo,包括光线传感器,加速度传感器,距离传感器和方向传感器。

demo:下载地址

源码:

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);

}

}

界面截图:

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