android sensor传感器

MainActivity.java

package com.sensor;

import com.sensor.ShakeListener.OnShakeListener;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

	private ShakeListener shakeListener;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        shakeListener=new ShakeListener(this);
        shakeListener.setOnShakeListener(new Shake());
    }
    
    class Shake implements OnShakeListener{

		@Override
		public void onShake() {
			// TODO Auto-generated method stub
			setTitle("正在摇动了手机");
		}
    	
    }
    
    

    @Override
	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
		shakeListener.start();
	}



	@Override
	protected void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
		shakeListener.stop();
	}



	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		shakeListener.stop();
	}



	@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

ShakeListener.java

package com.sensor;

import android.app.Service;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Vibrator;

public class ShakeListener implements SensorEventListener {
	private static final int SPEED_SHRESHOLD=3000;
	private static final int UPDATE_INTERVAL_TIME=78;
	private SensorManager sensorManager;
	private Sensor sensor;
	private Vibrator vibrator;
	private OnShakeListener onShakeListener;
	
	private Context context;
	
	private float lastx;
	private float lasty;
	private float lastz;
	
	private long lastUpdateTime;
	
	
	
	public ShakeListener(Context context) {
		super();
		this.context = context;
		start();
	}

	public void start() {
		// TODO Auto-generated method stub
		sensorManager=(SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
		vibrator=(Vibrator) context.getSystemService(Service.VIBRATOR_SERVICE);
		if(sensorManager!=null){
			sensor=sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
		}
		if(sensor!=null){
			sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_GAME);
		}
	}
	
	public void stop() {
		// TODO Auto-generated method stub
		sensorManager.unregisterListener(this);
	}
	
	public void setOnShakeListener(OnShakeListener listener){
		onShakeListener=listener;
	}

	public interface OnShakeListener{
		public void onShake();
	}
	
	
	
	@Override
	public void onSensorChanged(SensorEvent event) {
		// TODO Auto-generated method stub
		long currentUpdateTime=System.currentTimeMillis();
		long timeInterval=currentUpdateTime-lastUpdateTime;
		if(timeInterval<UPDATE_INTERVAL_TIME){
			return;
		}
		lastUpdateTime=currentUpdateTime;
		
		float x=event.values[0];
		float y=event.values[1];
		float z=event.values[2];
		
		float deltaX=x-lastx;
		float deltaY=y-lasty;
		float deltaZ=z-lastz;
		
		lastx=x;
		lasty=y;
		lastz=z;
		
		double speed=Math.sqrt(deltaX*deltaX+deltaY*deltaY+deltaZ*deltaZ)/timeInterval*10000;
		if(speed>=SPEED_SHRESHOLD){
			onShakeListener.onShake();
			vibrator.vibrate(1000);
		}
	}
	
	private boolean coordinate(Float x,Float y,Float z){
		if((x>10&&y>10)||(x>10&&z>10)||(y>10&&z>10)){
			return true;
		}else{
			return false;
		}
	}

	@Override
	public void onAccuracyChanged(Sensor sensor, int accuracy) {
		// TODO Auto-generated method stub
		vibrator.vibrate(0);
	}

}

manifest.xml

    <uses-permission android:name="android.permission.VIBRATE"/>