綜合傳感器示例

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/orientation" />
<EditText
    android:id="@+id/etOrientation"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:editable="false"
    android:cursorVisible="false" />
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/magnetic" />
<EditText
    android:id="@+id/etMagnetic"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:editable="false"
    android:cursorVisible="false" />
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/temperature" />
<EditText
    android:id="@+id/etTemerature"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:editable="false"
    android:cursorVisible="false" />
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/light" />
<EditText
    android:id="@+id/etLight"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:editable="false"
    android:cursorVisible="false" />    
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/pressure" />
<EditText
    android:id="@+id/etPressure"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:editable="false"
    android:cursorVisible="false" />            
</LinearLayout>

SensorTest.java

package org.crazyit.sensor;

import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
//import android.hardware.SensorEvent;
//import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.EditText;

/**
 * Description:
 * <br/>site: <a href="http://www.crazyit.org">crazyit.org</a>
 * <br/>Copyright (C), 2001-2014, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */
public class SensorTest extends Activity
    implements SensorEventListener
{
    // 定義Sensor管理器
    private SensorManager mSensorManager;

    EditText etOrientation;
    EditText etMagnetic;
    EditText etTemerature;
    EditText etLight;
    EditText etPressure;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        // 獲取界面上的EditText組件
        etOrientation = (EditText) findViewById(R.id.etOrientation);
        etMagnetic = (EditText) findViewById(R.id.etMagnetic);
        etTemerature = (EditText) findViewById(R.id.etTemerature);
        etLight = (EditText) findViewById(R.id.etLight);
        etPressure = (EditText) findViewById(R.id.etPressure);
        // 獲取傳感器管理服務
        mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);  //①
    }

    @Override
    protected void onResume()
    {
        super.onResume();
        // 爲系統的方向傳感器註冊監聽器
        mSensorManager.registerListener(this,
            mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),
            SensorManager.SENSOR_DELAY_GAME);
        // 爲系統的磁場傳感器註冊監聽器
        mSensorManager.registerListener(this,
            mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),
            SensorManager.SENSOR_DELAY_GAME);
        // 爲系統的溫度傳感器註冊監聽器
        mSensorManager.registerListener(this,
            mSensorManager.getDefaultSensor(Sensor.TYPE_AMBIENT_TEMPERATURE),
            SensorManager.SENSOR_DELAY_GAME);
        // 爲系統的光傳感器註冊監聽器
        mSensorManager.registerListener(this,
            mSensorManager.getDefaultSensor(Sensor.TYPE_LIGHT),
            SensorManager.SENSOR_DELAY_GAME);
        // 爲系統的壓力傳感器註冊監聽器
        mSensorManager.registerListener(this,
            mSensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE),
            SensorManager.SENSOR_DELAY_GAME);
    }

    @Override
    protected void onStop()
    {
        // 程序退出時取消註冊傳感器監聽器
        mSensorManager.unregisterListener(this);
        super.onStop();
    }

    @Override
    protected void onPause()
    {
        // 程序暫停時取消註冊傳感器監聽器
        mSensorManager.unregisterListener(this);
        super.onPause();
    }

    // 如下是實現SensorEventListener接口必須實現的方法
    @Override
    // 當傳感器精度改變時回調該方法。
    public void onAccuracyChanged(Sensor sensor, int accuracy)
    {
    }

    @Override
    public void onSensorChanged(SensorEvent event)
    {
        float[] values = event.values;
        // 獲取觸發event的傳感器類型
        int sensorType = event.sensor.getType();
        StringBuilder sb = null;
        // 判斷是哪一個傳感器發生改變
        switch (sensorType)
        {
            // 方向傳感器
            case Sensor.TYPE_ORIENTATION:
                sb = new StringBuilder();
                sb.append("繞Z軸轉過的角度：");
                sb.append(values[0]);
                sb.append("\n繞X軸轉過的角度：");
                sb.append(values[1]);
                sb.append("\n繞Y軸轉過的角度：");
                sb.append(values[2]);
                etOrientation.setText(sb.toString());
                break;
            // 磁場傳感器
            case Sensor.TYPE_MAGNETIC_FIELD:
                sb = new StringBuilder();
                sb.append("X方向上的角度：");
                sb.append(values[0]);
                sb.append("\nY方向上的角度：");
                sb.append(values[1]);
                sb.append("\nZ方向上的角度：");
                sb.append(values[2]);
                etMagnetic.setText(sb.toString());
                break;
            // 溫度傳感器
            case Sensor.TYPE_AMBIENT_TEMPERATURE:
                sb = new StringBuilder();
                sb.append("當前溫度爲：");
                sb.append(values[0]);
                etTemerature.setText(sb.toString());
                break;
            // 光傳感器
            case Sensor.TYPE_LIGHT:
                sb = new StringBuilder();
                sb.append("當前光的強度爲：");
                sb.append(values[0]);
                etLight.setText(sb.toString());
                break;
            // 壓力傳感器
            case Sensor.TYPE_PRESSURE:
                sb = new StringBuilder();
                sb.append("當前壓力爲：");
                sb.append(values[0]);
                etPressure.setText(sb.toString());
                break;
        }
    }
}

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