package com.beyond.phonestolen;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.app.Activity;
import android.widget.Toast;
public class MainActivity extends Activity {
//传感器管理器 private SensorManager sm;
//距离传感器 private Sensor sensor;
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//1,通过获取系统服务，得到传感器管理器 sm=(SensorManager) getSystemService(SENSOR_SERVICE);
//2,通过传感器管理器获取指定的距离传感器 sensor=sm.getDefaultSensor(Sensor.TYPE_PROXIMITY);
//3,通过传感器管理器注册监听器,监听距离传感器的感应事件 sm.registerListener(new MyListener(), sensor, SensorManager.SENSOR_DELAY_GAME);
}
private class MyListener implements SensorEventListener{
@Override public void onSensorChanged(SensorEvent event) {
float distance=event.values[0];
//System.out.println(val[0]);
Toast.makeText(MainActivity.this, ""+distance, 0).show();
//当手机在裤袋里面时，距离为0 if (distance<1.0f) {
return;
}
//当手机脱离裤袋的时候，距离为1，播放音乐 playMusic();
}
private void playMusic() {
// 播放音乐 MediaPlayer mPlayer=MediaPlayer.create(MainActivity.this, R.drawable.alarm);
mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mPlayer.prepare();
}
catch (Exception e) {
e.printStackTrace();
}
//理论上应该异步准备，在准备完成的回调函数中启动播放器 mPlayer.start();
}
@Override public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}
}