Android Light Sensor

下面这段话都能看懂吧～

Here I am explaining you how to use Light Sensor of Android.
1. Implement SensorEventListener
2. Create variable for SensorManager and Sensor
3. Get Object of SensorManager using system service
4. Get Object of Light Sensor from SensorManager
5. Implement onAccuracyChanged and onSensorChanged method

package com.test;import android.app.Activity;import android.hardware.Sensor;import android.hardware.SensorEvent;import android.hardware.SensorEventListener;import android.hardware.SensorManager;import android.os.Bundle;import android.util.Log;public class Test extends Activity implements SensorEventListener{ private SensorManager mSensorManager; private Sensor mLight; @Override public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.main);   mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);         mLight = mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT); } @Override protected void onResume() {   mSensorManager.registerListener(this, mLight, SensorManager.SENSOR_DELAY_NORMAL);  super.onResume(); } @Override protected void onPause() {  mSensorManager.unregisterListener(this);  super.onPause(); } public void onAccuracyChanged(Sensor sensor, int accuracy) {   if(sensor.getType() == Sensor.TYPE_LIGHT){    Log.i("Sensor Changed", "Accuracy :" + accuracy);   }   } public void onSensorChanged(SensorEvent event) {  if( event.sensor.getType() == Sensor.TYPE_LIGHT){   Log.i("Sensor Changed", "onSensor Change :" + event.values[0]);  }   }}

所有传感器：

package androidegg.stu.sensor;import java.util.List;import android.app.Activity;import android.hardware.Sensor;import android.hardware.SensorEvent;import android.hardware.SensorEventListener;import android.hardware.SensorManager;import android.os.Bundle;import android.widget.TextView;public class AndroidEggSensorGetValueActivity extends Activity implements SensorEventListener{    //...①    /** Called when the activity is first created. */    private SensorManager sensorManager;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //SensorManager的接口取得        sensorManager = (SensorManager)this.getSystemService(SENSOR_SERVICE);        setContentView(R.layout.main);    }        @Override    protected void onResume(){　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　//...②        super.onResume();        List<Sensor> sensors = sensorManager.getSensorList(Sensor.TYPE_ALL);                //sensor1        for (Sensor s : sensors){            sensorManager.registerListener(this,s,SensorManager.SENSOR_DELAY_NORMAL);        }                  }        //    @Override    public void onAccuracyChanged(Sensor sensor, int accuracy) {        // TODO Auto-generated method stub            }    @Override    public void onSensorChanged(SensorEvent e) {　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　//...③        // TODO Auto-generated method stub        switch(e.sensor.getType()){            //加速度的值表示            case Sensor.TYPE_ACCELEROMETER:{                TextView x = (TextView)findViewById(R.id.x);                x.setText("x:" + String.valueOf(e.values[SensorManager.DATA_X]));                TextView y = (TextView)findViewById(R.id.y);                y.setText("y:" + String.valueOf(e.values[SensorManager.DATA_Y]));                TextView z =(TextView)findViewById(R.id.z);                z.setText("z:" + String.valueOf(e.values[SensorManager.DATA_Z]));                break;            }            //倾斜度的值表示            case Sensor.TYPE_ORIENTATION:{                TextView x = (TextView)findViewById(R.id.Azimuth);                x.setText("Azimuth" + String.valueOf(e.values[SensorManager.DATA_X]));                                TextView y = (TextView)findViewById(R.id.Pitch);                y.setText("Pitch:" + String.valueOf(e.values[SensorManager.DATA_Y]));                                TextView z = (TextView)findViewById(R.id.Roll);                z.setText("Roll:" + String.valueOf(e.values[SensorManager.DATA_Z]));                break;            }            //磁力计 的值表示            case Sensor.TYPE_MAGNETIC_FIELD:{                TextView x = (TextView)findViewById(R.id.magnetic_x);                x.setText("x:" + String.valueOf(e.values[SensorManager.DATA_X]));                TextView y = (TextView)findViewById(R.id.magnetic_y);                y.setText("y:" + String.valueOf(e.values[SensorManager.DATA_Y]));                                TextView z= (TextView)findViewById(R.id.magnetic_z);                z.setText("z:" + String.valueOf(e.values[SensorManager.DATA_Z]));                break;            }            //温度計の値を表示する            case Sensor.TYPE_TEMPERATURE:{                TextView x = (TextView)findViewById(R.id.degree);                x.setText("Degree:" + String.valueOf(e.values[SensorManager.DATA_X]));            }        }        }      //    @Override    protected void onStop(){        super.onStop();　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　//...④        sensorManager.unregisterListener(this);    }}重要事项如下所示① 为了取得传感器的值，需要加载SensorEventListener② 在onResume方法进行*********的登录③ 在onSensorChanged方法中取得传感器的值，并在画面表示。     在这个方法中在onResume方法中登录的所有种类的传感器的值都可以取道。判别传感器的种类，将传感器的值用     TextView在画面表示出来。④ 在onStop方法中接触所有登录的*********。