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【Java】摇一摇

作者:赫龙 / 发布于2014/9/10/ 415

参考mars视频，然后自己改写，帮助师兄解决进食堂犯愁吃什么的问题啊，嘎嘎。


	package com.helong.sensor;
	
	import java.util.List;
	
	import android.hardware.Sensor;
	import android.hardware.SensorEvent;
	import android.hardware.SensorEventListener;
	import android.hardware.SensorManager;
	import android.os.Bundle;
	import android.app.Activity;
	import android.content.Context;
	import android.view.Menu;
	import android.view.View;
	import android.view.View.OnClickListener;
	import android.widget.Button;
	import android.widget.TextView;
	
	public class MainActivity extends Activity {
	
	
	
	 private SensorManager sensorManager;
	 private TextView textView;
	 private float gravity[]=new float[3];
	 private float linear_acceleration[]=new float[3];
	
	 @Override
	 protected void onCreate(Bundle savedInstanceState) {
	 super.onCreate(savedInstanceState);
	 setContentView(R.layout.activity_main);
	 sensorManager=(SensorManager)getSystemService(Context.SENSOR_SERVICE);
	
	 textView=(TextView)findViewById(R.id.textView);
	 Sensor shake=sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
	 SensorListener sl=new SensorListener();
	 sensorManager.registerListener(sl, shake,SensorManager.SENSOR_DELAY_NORMAL);//采样率
	
	
	 }
	 class SensorListener implements SensorEventListener{
	
	 @Override
	 public void onAccuracyChanged(Sensor arg0, int arg1) {
	 // TODO Auto-generated method stub
	
	 }
	
	 @Override
	 public void onSensorChanged(SensorEvent event) {
	 // TODO Auto-generated method stub
	
	 final float alpha=0.8f;
	 gravity[0]=alpha*gravity[0]+(1-alpha)*event.values[0];
	 gravity[1]=alpha*gravity[0]+(1-alpha)*event.values[1];
	 gravity[2]=alpha*gravity[0]+(1-alpha)*event.values[2];
	
	 linear_acceleration[0]=event.values[0]-gravity[0];
	 linear_acceleration[1]=event.values[0]-gravity[1];
	 linear_acceleration[2]=event.values[0]-gravity[2];
	
	
	 float acc=linear_acceleration[0];//x方向的加速度values[1]是y方向加速度，values[2]是z方向加速度
	 if(acc>5){
	 double i=Math.random()*10;
	 int j=(int)i;
	 switch(j){
	 case 0:
	 case 1:
	 textView.setText("来个小炒？");break;
	 case 2:
	 case 3:
	 textView.setText("吃干拌面");break;
	 case 4:
	 case 5:
	 textView.setText("高级套餐，走起！");break;
	 case 6:
	 textView.setText("喝粥");break;
	 case 7:
	 case 8:
	 textView.setText("小酥肉泡馍在等你哦！");break;
	 case 9:
	 textView.setText("吃米饭套餐吧，哎...");break;
	 default:textView.setText("赫龙也帮不到你了");
	 break;
	
	 }
	 }
	 }
	
	
	
	
	
	 }
	
	
	
	
	 @Override
	 public boolean onCreateOptionsMenu(Menu menu) {
	 // Inflate the menu; this adds items to the action bar if it is present.
	 getMenuInflater().inflate(R.menu.main, menu);
	 return true;
	 }
	
	}

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