装好Adroid SDK后，在sample的指导下，写了几个简单的类似hello world的程序，在这里介绍一下所写的在android下调用传感器的程序。
Android中支持的几种传感器：
Sensor.TYPE_ACCELEROMETER：加速度传感器。
Sensor.TYPE_GYROSCOPE：陀螺仪传感器。
Sensor.TYPE_LIGHT：亮度传感器。
Sensor.TYPE_MAGNETIC_FIELD：地磁传感器。
Sensor.TYPE_ORIENTATION：方向传感器。
Sensor.TYPE_PRESSURE：压力传感器。
Sensor.TYPE_PROXIMITY：近程传感器。
Sensor.TYPE_TEMPERATURE：温度传感器。
使用传感器最关键的一些知识是：SensorManager是所有传感器的一个综合管理类，包括了传感器的种类、采样率、精准度等。我们可以通过getSystemService方法来取得一个SensorManager对象。使用传感器时，需要通过registerListener函数注册传感器，使用完后需要通过unregisterListener取消注册。
百闻不如一见，还是直接讲代码：
新建一个Sensors的工程，创建一个Sensors.java，内容如下：
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package me.sigma.sensors; 02
03
04
import android.app.Activity; 05
import android.hardware.SensorListener; 06
import android.hardware.SensorManager; 07
import android.os.Bundle; 08
import android.widget.TextView; 09
10
public class Sensors extends Activity { 11
TextView myTextView1;//t 12
//gen 13
TextView myTextView2;//x 14
TextView myTextView3;//y 15
TextView myTextView4;//z 16
//acc 17
TextView myTextView5;//x 18
TextView myTextView6;//y 19
TextView myTextView7;//z 20
//ori 21
TextView myTextView8;//x 22
TextView myTextView9;//y 23
TextView myTextView10;//z 24
//Light 25
TextView myTextView11;//z 26
27
SensorManager mySensorManager;// 28
@Override
29
public void onCreate(Bundle savedInstanceState) { 30
super.onCreate(savedInstanceState); 31
setContentView(R.layout.main); 32
myTextView1 = (TextView) findViewById(R.id.myTextView1); 33
myTextView2 = (TextView) findViewById(R.id.myTextView2); 34
myTextView3 = (TextView) findViewById(R.id.myTextView3); 35
myTextView4 = (TextView) findViewById(R.id.myTextView4); 36
myTextView5 = (TextView) findViewById(R.id.myTextView5); 37
myTextView6 = (TextView) findViewById(R.id.myTextView6); 38
myTextView7 = (TextView) findViewById(R.id.myTextView7); 39
myTextView8 = (TextView) findViewById(R.id.myTextView8); 40
myTextView9 = (TextView) findViewById(R.id.myTextView9); 41
myTextView10 = (TextView) findViewById(R.id.myTextView10); 42
myTextView11 = (TextView) findViewById(R.id.myTextView11); 43
mySensorManager = (SensorManager) getSystemService(SENSOR_SERVICE); 44
} 45
private SensorListener mySensorListener = new SensorListener(){ 46
@Override 47
public void onAccuracyChanged(int sensor, int accuracy) {} 48
@Override 49
public void onSensorChanged(int sensor, float[] values) { 50
if(sensor == SensorManager.SENSOR_TEMPERATURE){ 51
myTextView1.setText("Current Temprature："+values[0]);
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}else if(sensor == SensorManager.SENSOR_MAGNETIC_FIELD){ 53
myTextView2.setText("Current Magnetic x："+values[0]); 54
myTextView3.setText("Current Magnetic y："+values[1]); 55
myTextView4.setText("Current Magnetic z："+values[2]); 56
}else if(sensor == SensorManager.SENSOR_ACCELEROMETER){ 57
myTextView5.setText("Current Accelero x："+values[0]); 58
myTextView6.setText("Current Accelero y："+values[1]); 59
myTextView7.setText("Current Accelero z："+values[2]); 60
}else if(sensor == SensorManager.SENSOR_ORIENTATION){ 61
myTextView8.setText("Current Oraenttation x："+values[0]); 62
myTextView9.setText("Current Oraenttation y："+values[1]); 63
myTextView10.setText("Current Oraenttation z："+values[2]); 64
}else if(sensor == SensorManager.SENSOR_LIGHT){ 65
myTextView11.setText("Current Oraenttation x："+values[0]); 66
} 67
} 68
}; 69
@Override 70
protected void onResume() { 71
mySensorManager.registerListener( 72
mySensorListener, 73
SensorManager.SENSOR_TEMPERATURE | 74
SensorManager.SENSOR_MAGNETIC_FIELD |
75
SensorManager.SENSOR_ACCELEROMETER | 76
SensorManager.SENSOR_LIGHT | 77
SensorManager.SENSOR_ORIENTATION, 78
SensorManager.SENSOR_DELAY_UI 79
); 80
super.onResume(); 81
}
82
@Override 83
protected void onPause() { 84
mySensorManager.unregisterListener(mySensorListener); 85
super.onPause(); 86
} 87
}
更改res/layout/下面的main.xml,为如下内容：
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 03
android:orientation="vertical" 04
android:layout_width="fill_parent" 05
android:layout_height="fill_parent"> 06
<TextView 07
android:id="@+id/title" 08
android:gravity="center_horizontal" 09
android:textSize="20px" 10
android:layout_width="fill_parent" 11
android:layout_height="wrap_content" 12
android:text="@string/title"/> 13
<TextView 14
android:id="@+id/myTextView1" 15
android:textSize="18px" 16
android:layout_width="fill_parent" 17
android:layout_height="wrap_content" 18
android:text="@string/myTextView1"/> 19
<TextView 20
android:id="@+id/myTextView2" 21
android:textSize="18px" 22
android:layout_width="fill_parent" 23
android:layout_height="wrap_content" 24
android:text="@string/myTextView2"/> 25
<TextView 26
android:id="@+id/myTextView3" 27
android:textSize="18px" 28
android:layout_width="fill_parent" 29
android:layout_height="wrap_content" 30
android:text="@string/myTextView3"/> 31
<TextView 32
android:id="@+id/myTextView4" 33
android:textSize="18px" 34
android:layout_width="fill_parent" 35
android:layout_height="wrap_content" 36
android:text="@string/myTextView4"/> 37
<TextView 38
android:id="@+id/myTextView5" 39
android:textSize="18px" 40
android:layout_width="fill_parent" 41
android:layout_height="wrap_content" 42
android:text="@string/myTextView5"/> 43
<TextView 44
android:id="@+id/myTextView6" 45
android:textSize="18px" 46
android:layout_width="fill_parent" 47
android:layout_height="wrap_content" 48
android:text="@string/myTextView6"/> 49
<TextView 50
android:id="@+id/myTextView7" 51
android:textSize="18px" 52
android:layout_width="fill_parent" 53
android:layout_height="wrap_content" 54
android:text="@string/myTextView7"/> 55
<TextView 56
android:id="@+id/myTextView8" 57
android:textSize="18px" 58
android:layout_width="fill_parent" 59
android:layout_height="wrap_content" 60
android:text="@string/myTextView8"/> 61
<TextView 62
android:id="@+id/myTextView9" 63
android:textSize="18px" 64
android:layout_width="fill_parent" 65
android:layout_height="wrap_content" 66
android:text="@string/myTextView9"/> 67
<TextView 68
android:id="@+id/myTextView10" 69
android:textSize="18px" 70
android:layout_width="fill_parent" 71
android:layout_height="wrap_content" 72
android:text="@string/myTextView10"/> 73
<TextView 74
android:id="@+id/myTextView11" 75
android:textSize="18px" 76
android:layout_width="fill_parent" 77
android:layout_height="wrap_content" 78
android:text="@string/myTextView11"/> 79
</LinearLayout> 80
更改res/values/strings.xml为如下内容：
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<?xml version="1.0" encoding="utf-8"?> 02
<resources> 03
<string name="hello">templator!</string> 04
<string name="app_name">templator</string> 05
<string name="title">Sigma Sensors</string> 06
<string name="myTextView1">Current Temprature：</string> 07
<string name="myTextView2">Current Magnetic x：</string> 08
<string name="myTextView3">Current Magnetic y：</string> 09
<string name="myTextView4">Current Magnetic z：</string> 10
<string name="myTextView5">Current Accelero x：</string> 11
<string name="myTextView6">Current Accelero y：</string> 12
<string name="myTextView7">Current Accelero z：</string> 13
<string name="myTextView8">Current Oraenttation x：</string> 14
<string name="myTextView9">Current Oraenttation y：</string> 15
<string name="myTextView10">Current Oraenttation z：</string> 16
<string name="myTextView11">Current Light：</string> 17
</resources> 18