一、修改activity_main.xml布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/hello_world" /></RelativeLayout>

二、修改MainActivity文件

package com.example.yxp.jxol;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.animation.Animation; import android.view.animation.RotateAnimation; import android.widget.ImageView;public class MainActivity extends Activity {private sensorListener listener;private SensorManager sensorManager;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);// 獲得傳感器Sensor sensor = sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);// 得到光線傳感器listener = new sensorListener();sensorManager.registerListener(listener, sensor, sensorManager.SENSOR_DELAY_UI);}private class sensorListener implements SensorEventListener {@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {}@Overridepublic void onSensorChanged(SensorEvent event) {float lux = event.values[0];System.out.println("光線強(qiáng)度：" + lux);}}@Overrideprotected void onDestroy() {super.onDestroy();sensorManager.unregisterListener(listener);listener=null;} }

三、效果

總結(jié)

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