Android重力感应应用【安卓进化十七】

重力感应主要应用于游戏开发中，这个效果非常棒！主要是3个轴，简单理解：那个朝上，值为正，朝下值为负！这个效果我测试过了，由于在手机上才能实现重力感应，所以没有效果图。见谅！转载请标明出处：http://blog.csdn.net/wdaming1986/article/details/6752232

一、MainActivity。java的代码：

package com.ray.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.widget.TextView;

public class MainActivity extends Activity{

	private SensorManager sensorMgr; 
	private TextView show_TextView;
	Sensor sensor;
	private float x, y, z;   
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState); 
		setContentView(R.layout.main);
		show_TextView = (TextView)findViewById(R.id.text_view);
		sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);   
		sensor = sensorMgr.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);   
		SensorEventListener lsn = new SensorEventListener() 
		{   
			@Override
			public void onSensorChanged(SensorEvent e) {
				// TODO Auto-generated method stub
				x = e.values[SensorManager.DATA_X];   
				y = e.values[SensorManager.DATA_Y];   
				z = e.values[SensorManager.DATA_Z];   
				setTitle("x="+(int)x+","+"y="+(int)y+","+"z="+(int)z); 
				show_TextView.setText("x="+(int)x+", "+"y="+(int)y+", "+"z="+(int)z);
			}

			@Override
			public void onAccuracyChanged(Sensor arg0, int arg1) {
				
			}   
		};   //注册listener，第三个参数是检测的精确度 
		sensorMgr.registerListener(lsn, sensor, SensorManager.SENSOR_DELAY_GAME); 
	}

}

二、main.xml的代码：

<?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:id="@+id/text_view"
	    
android:layout_width="fill_parent" 
	    
android:layout_height="wrap_content" 
	    
android:textSize="25pt"
	
/>

</LinearLayout>