Mega Code Archive
Using Sensor
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package app.test;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.provider.Settings;
public class Test extends Activity implements SensorEventListener {
private WakeLock mWakelock;
private PowerManager mPwrMgr;
private WakeLock mTurnBackOn = null;
Handler handler = new Handler();
private SensorManager mMgr;
private Sensor mAccel;
private BufferedWriter mLog;
final private SimpleDateFormat mTimeFormat = new SimpleDateFormat("HH:mm:ss - ");
private int mSavedTimeout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mMgr = (SensorManager) this.getSystemService(SENSOR_SERVICE);
mAccel = mMgr.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
try {
String filename = Environment.getExternalStorageDirectory().getAbsolutePath() +
"/accel.log";
mLog = new BufferedWriter(new FileWriter(filename, true));
}
catch(Exception e) {
e.printStackTrace();
finish();
}
mPwrMgr = (PowerManager) this.getSystemService(POWER_SERVICE);
mWakelock = mPwrMgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Accel");
mWakelock.acquire();
try {
mSavedTimeout = Settings.System.getInt(getContentResolver(),
Settings.System.SCREEN_OFF_TIMEOUT);
}
catch(Exception e) {
mSavedTimeout = 120000; // 2 minutes
}
Settings.System.putInt(getContentResolver(),
Settings.System.SCREEN_OFF_TIMEOUT, -1); // always on
}
public BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_SCREEN_OFF.equals(intent.getAction())) {
handler.post(new Runnable() {
public void run() {
if(mTurnBackOn != null)
mTurnBackOn.release();
mTurnBackOn = mPwrMgr.newWakeLock(
PowerManager.SCREEN_DIM_WAKE_LOCK |
PowerManager.ACQUIRE_CAUSES_WAKEUP,
"AccelOn");
mTurnBackOn.acquire();
}});
}
}
};
@Override
protected void onStart() {
mMgr.registerListener(this, mAccel, SensorManager.SENSOR_DELAY_NORMAL);
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
registerReceiver(mReceiver, filter);
super.onStart();
}
@Override
protected void onStop() {
mMgr.unregisterListener(this, mAccel);
unregisterReceiver(mReceiver);
try {
mLog.flush();
} catch (IOException e) {
}
super.onStop();
}
@Override
protected void onDestroy() {
try {
mLog.flush();
mLog.close();
}
catch(Exception e) {
}
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, mSavedTimeout);
mWakelock.release();
if(mTurnBackOn != null)
mTurnBackOn.release();
super.onDestroy();
}
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
public void onSensorChanged(SensorEvent event) {
writeLog("Got a sensor event: " + event.values[0] + ", " +
event.values[1] + ", " + event.values[2]);
}
private void writeLog(String str) {
try {
Date now = new Date();
mLog.write(mTimeFormat.format(now));
mLog.write(str);
mLog.write("\n");
}
catch(IOException ioe) {
ioe.printStackTrace();
}
}
}
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