android 类似微信的摇一摇实现

package com.eboy.testyaoyiyao;

import java.text.SimpleDateFormat;
import java.util.Date;

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.os.Vibrator;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity implements SensorEventListener {
    //Sensor管理器
    private SensorManager mSensorManager = null;
    
    //震动
    private Vibrator mVibrator = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
        mVibrator = (Vibrator)getSystemService(VIBRATOR_SERVICE);
        
    }

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

    public void onAccuracyChanged(Sensor arg0, int arg1) {
        // TODO Auto-generated method stub
        
    }

    public void onSensorChanged(SensorEvent arg0) {
        // TODO Auto-generated method stub
        int sensorType = arg0.sensor.getType();
        float[] values = arg0.values;
        if (sensorType == Sensor.TYPE_ACCELEROMETER){
            if (Math.abs(values[0]) > 14 || Math.abs(values[1]) > 14 || Math.abs(values[2]) > 14){
                mVibrator.vibrate(100);
                TextView tv1 = (TextView)findViewById(R.id.textView1);
                SimpleDateFormat f=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss E");
                tv1.setText(f.format(new Date()) + "手机摇动了...");                
            }
        }
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        
        mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        mSensorManager.unregisterListener(this);
        super.onStop();        
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        mSensorManager.unregisterListener(this);
        super.onPause();
    }    
}