github代码:https://github.com/XQXZ/android/tree/master/LightSensorTest
MainActivity.java
package com.sdutacm.lightsensortest;
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.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements SensorEventListener{
private SensorManager sensorManager;
private Sensor magneticSensor,acclerometerSensor;
private TextView lightLevel;
float[] acclerometerValues = new float[3];
float[] magneticFildValues = new float[3];
private ImageView compassImg;
private float lastRotateDegree;
private TextView orientationtext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getSensorManager();
}
private void getSensorManager() {
orientationtext = (TextView) findViewById(R.id.orientation);
compassImg = (ImageView) findViewById(R.id.compass_img);
sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
magneticSensor = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
acclerometerSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
}
@Override
protected void onResume() {
super.onResume();
if (sensorManager != null) {
sensorManager.registerListener(this,magneticSensor,SensorManager.SENSOR_DELAY_GAME);
sensorManager.registerListener(this,acclerometerSensor,SensorManager.SENSOR_DELAY_GAME);
}
}
@Override
protected void onPause() {
super.onPause();
if (sensorManager != null) {
sensorManager.unregisterListener(this,magneticSensor);
sensorManager.unregisterListener(this,acclerometerSensor);
}
}
@Override
public void onSensorChanged(SensorEvent event) {
if(event.sensor.getType() == Sensor.TYPE_ACCELEROMETER){
acclerometerValues = event.values.clone();
}else if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD){
magneticFildValues = event.values.clone();
}
float[] R = new float[9];
float[] values = new float[3];
SensorManager.getRotationMatrix(R,null,acclerometerValues,magneticFildValues);
sensorManager.getOrientation(R,values);
float rotateDegree = -(float) Math.toDegrees(values[0]);
if(Math.abs(rotateDegree - lastRotateDegree)>1){
RotateAnimation animation = new RotateAnimation(lastRotateDegree,rotateDegree, Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);
animation.setFillAfter(true);
compassImg.startAnimation(animation);
lastRotateDegree = rotateDegree;
compassImg.startAnimation(animation);
lastRotateDegree = rotateDegree;
float orientationNum = 180;
orientationNum+=(int) lastRotateDegree;
StringBuffer buffer = new StringBuffer();
boolean inferContent = false;
if(orientationNum >=67.5 && orientationNum <112.5){
buffer.append("东");
if((int)orientationNum>=83 && (int)orientationNum>=93){
buffer.append("
寻龙分金看缠山，一重缠是一重关
少侠,此处风水俱佳!必有重宝!!!");
inferContent = true;
}
}else if(orientationNum >=22.5 && orientationNum <67.5) {
buffer.append("东北");
if((int)orientationNum>=42 && (int)orientationNum<=48){
buffer.append("
关门若有千重锁，定有王侯居此间
少侠,此处必有重宝!!!");
inferContent = true;
}
}else if(orientationNum >=337.5 && orientationNum <22.5) {
buffer.append("北");
if((int)orientationNum>=3 && (int)orientationNum<=357){
buffer.append("
关门如有八重险，不出阴阳八卦形
少侠,此处风水俱佳!必有重宝!!!");
inferContent = true;
}
}else if(orientationNum >=292.5 && orientationNum <337.5) {
buffer.append("西北");
if((int)orientationNum>=312 && (int)orientationNum <=318){
buffer.append("
摸金校尉，合择生，分择死
少侠,请保持和你队友的联系!!!");
inferContent = true;
}
}else if(orientationNum >=247.5 && orientationNum <292.5) {
buffer.append("西");
if((int)orientationNum>=267 && (int)orientationNum <= 273){
buffer.append("
摸金校尉，合择生，分择死
少侠,请保持和你队友的联系!!!");
inferContent = true;
}
}else if(orientationNum >=202.5 && orientationNum <247.5) {
buffer.append("西南");
if((int)orientationNum>=222 && (int)orientationNum<=228) {
buffer.append("
鸡鸣灯灭不摸金
少侠,快撤,有粽子!!!");
inferContent = true;
}
}else if(orientationNum >=157.5 && orientationNum <202.5) {
buffer.append("南");
if((int)orientationNum>=177 && (int)orientationNum <=183) {
buffer.append("
天下第一奇书——风水残卷《十六字阴阳风水秘术》
少侠,只有十块钱,十块钱你买不到吃亏,买不到上当!!!");
inferContent = true;
}
}else {
buffer.append("东南");
if((int)orientationNum>=132 && (int)orientationNum<=138) {
buffer.append("
世界上比鬼神可怕的是人心!
少侠,我发现一个惊天的秘密,,,,你是世界上最帅的人!!!");
inferContent = true;
}
}
if( inferContent){
orientationtext.setText((int)orientationNum+"
"+buffer);
}else {
orientationtext.setText(buffer+"
"+(int)orientationNum);
}
/**
* 90-22.5 90+22.5 67.5 112.5 东
* 45-22.5 45+22.5 22.5 67.5 东北
* 360-22.5 337.5 22.5 北
* 337.5 292.5 西北
* 292.5 247.5 西
* 247.5 202.5 西南
* 202.5 157.5 南
* 157.5 112.5 东南
*/
}
Log.d("MainActivity","values[0] is "+Math.toDegrees(values[0]));
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.sdutacm.lightsensortest.MainActivity"
android:background="#000"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/orientation"
android:layout_centerHorizontal="true"
android:textSize="25sp"
android:textColor="#fff"
android:gravity="center"
/>
<ImageView
android:id="@+id/compass_img"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_centerInParent="true"
android:src="@drawable/compass" />
<ImageView
android:id="@+id/arrow_img"
android:layout_width="60dp"
android:layout_height="110dp"
android:layout_centerInParent="true"
android:src="@drawable/arrow" />
</RelativeLayout>