郑德才博客

package com.zhengdecai.awaveinfo;

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.Handler;

import android.os.Message;

import android.os.Vibrator;

import android.widget.TextView;

import android.widget.Toast;

/**

 * 摇一摇（重力感应）效果

 * 

 * @author 郑德才

 *

 */

public class MainActivity extends Activity {

private SensorManager sensorManager;

private Vibrator vibrator;

private static final int SENSOR_SHAKE = 10;

private int i = 1;

private TextView txt;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

txt = (TextView) findViewById(R.id.txt);

sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);

}

@Override

protected void onResume() {

super.onResume();

if (sensorManager != null) {// 注册监听器

sensorManager.registerListener(sensorEventListener,

sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),

SensorManager.SENSOR_DELAY_NORMAL);

// 第一个参数是Listener，第二个参数是所得传感器类型，第三个参数值获取传感器信息的频率

}

}

@Override

protected void onPause() {

super.onPause();

if (sensorManager != null) {// 取消监听器

sensorManager.unregisterListener(sensorEventListener);

}

}

/**

* 重力感应监听

*/

private SensorEventListener sensorEventListener = new SensorEventListener() {

@Override

public void onSensorChanged(SensorEvent event) {

// 传感器信息改变时执行该方法

float[] values = event.values;

float x = values[0]; // x轴方向的重力加速度，向右为正

float y = values[1]; // y轴方向的重力加速度，向前为正

float z = values[2]; // z轴方向的重力加速度，向上为正

//Log.i(TAG, "x轴方向的重力加速度" + x + "；y轴方向的重力加速度" + y + "；z轴方向的重力加速度" + z);

//一般在这三个方向的重力加速度达到40就达到了摇晃手机的状态。

int medumValue = 19;// 三星 i9250怎么晃都不会超过20，没办法，只设置19了

if (Math.abs(x) > medumValue || Math.abs(y) > medumValue

|| Math.abs(z) > medumValue) {

vibrator.vibrate(200);

Message msg = new Message();

msg.what = SENSOR_SHAKE;

handler.sendMessage(msg);

}

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

};

/**

* 动作执行

*/

Handler handler = new Handler() {

@Override

public void handleMessage(Message msg) { 

super.handleMessage(msg);

switch (msg.what) {

case SENSOR_SHAKE:

Toast.makeText(MainActivity.this, "检测到摇晃，执行操作！",

Toast.LENGTH_SHORT).show();

txt.setText("检测到摇晃，执行操作！第" + i + "次");

i++;

break;

} 

}

};

}

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