Android传感器利用Senser实现不同的传感器

来源：互联网发布：手机淘宝移动端编辑：程序博客网时间：2024/05/16 04:40

传感器有不同的类型，以下是我列出的光线，加速度，风向传感器，在测试不同传感器的时候都需将传感器管理的onResume中
sensorManager.registerListener(myListner,sensorOri,sensorManager.SENSOR_DELAY_UI);

第二个参数改为相应的传感器，此dem中我加入了一张指南针图片作为示例：
这里写图片描述

activity_main.xml

 <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="查看所有支持的传感类型"        android:onClick="getAllSensors"        />    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textSize="30sp"        android:id="@+id/tv_main_result"        />    <ImageView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:src="@drawable/sounth"        android:id="@+id/iv_main_images"    />

java代码中注释掉的部分都是一种传感器的测试
MainActivity.java

package com.example.cindy_sounth;import android.content.Context;import android.hardware.Sensor;import android.hardware.SensorEvent;import android.hardware.SensorEventListener;import android.hardware.SensorManager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.WindowManager;import android.view.animation.RotateAnimation;import android.widget.ImageView;import android.widget.TextView;import java.util.List;public class MainActivity extends AppCompatActivity {    private SensorManager sensorManager;    private Sensor sensorLight;    private Sensor sensorAcc;    private Sensor sensorOri;    private TextView tv_main_result;    private MyListner myListner;    private ImageView iv_main_images;    private float current;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //得到图片        iv_main_images = (ImageView) findViewById(R.id.iv_main_images);        tv_main_result = (TextView) findViewById(R.id.tv_main_result);        //得到传感器的管理者        sensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);        //得到光线传感器//        sensorLight = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);        //获得加速度传感器//        sensorAcc = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);            //获取风向传感器        sensorOri = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);        myListner = new MyListner();    }    //注册一个监听(监听某一个传感器的值)    @Override    protected void onResume() {        super.onResume();        sensorManager.registerListener(myListner,sensorOri,sensorManager.SENSOR_DELAY_UI);    }        class MyListner implements SensorEventListener{            private WindowManager.LayoutParams layoutParams;            //当你的值发生改变            @Override            public void onSensorChanged(SensorEvent event) {                float[] f=event.values;                //测试获取光线传感器的值(光线值)//                float light= f[0];//                tv_main_result.setText(light+"");                //测试获得加速度传感器//                float x= f[0];//                float y= f[1];//                float z= f[2];//                tv_main_result.setText("x="+x+"\ny="+y+"\nz="+z);                //测试获取风向传感器//                float x= f[0];//                float y= f[1];//                float z= f[2];//               tv_main_result.setText("x="+x+"\ny="+y+"\nz="+z);                //加图片测试指南针                float x= f[0];                float y= f[1];                float z= f[2];                tv_main_result.setText("x="+x+"\ny="+y+"\nz="+z);                //实例化旋转动画                RotateAnimation rotateAnimation=new RotateAnimation(current,-x,RotateAnimation.RELATIVE_TO_SELF,0.5f,RotateAnimation.RELATIVE_TO_SELF,0.5f);                rotateAnimation.setDuration(200);                current=-x;                iv_main_images.startAnimation(rotateAnimation);                //改变屏幕的亮度                //先拿到屏幕//               WindowManager.LayoutParams layoutParams= getWindow().getAttributes();//                layoutParams.screenBrightness=light/225f;//                getWindow().setAttributes(layoutParams);            }            //当值发生精度改变            @Override            public void onAccuracyChanged(Sensor sensor, int accuracy) {            }        }    @Override    protected void onDestroy() {        super.onDestroy();        sensorManager.unregisterListener(myListner);    }        public void getAllSensors(View view){        List<Sensor> sensors= sensorManager.getSensorList(Sensor.TYPE_ALL);        for (Sensor sensor : sensors) {            Log.i("test", sensor.getName());//            sensor.getPower();        }       }}

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