Question

My code used to work on 2.2, and I was able to get the gyroscope data, but after the update to 2.3, it does not work anymore. I also tried on a galaxy player to make sure it’s not a hardware issue with my phone. It did not work on that one either. Any suggestions? Here’s the code:

    package my.acc;
    
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.PrintWriter;
    
    import android.app.Activity;

    import android.hardware.Sensor;
    import android.hardware.SensorManager;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.ArrayAdapter;
    import android.widget.EditText;
    import android.widget.Spinner;
    import android.widget.ToggleButton;
    
    public class myact extends Activity {
        
        private SensorManager mSensorManager;
        Sensor myAcc, myAcc2, myAcc3, myAcc4;
        MySensorListener listener, listener2,listener3, listener4;
        EditText mEdit;
    
    
        
        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            
            final Spinner spinner = (Spinner) findViewById(R.id.spinner);
            ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
                    this, R.array.activity_array, android.R.layout.simple_spinner_item);
            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner.setAdapter(adapter);
    
            
            // Set up the accelerometer reading
            mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
            myAcc = mSensorManager.getDefaultSensor(Sensor.TYPE_LINEAR_ACCELERATION);
            myAcc2 = mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
            myAcc3 = mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
            myAcc4 = mSensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY);
    
            final ToggleButton togglebutton = (ToggleButton) findViewById(R.id.togglebutton);
            mEdit   = (EditText)findViewById(R.id.entry);
    
            togglebutton.setOnClickListener(new OnClickListener() {
                PrintWriter mCurrentFile = null;
                PrintWriter mCurrentFile2 = null;
                PrintWriter mCurrentFile3 = null;
                PrintWriter mCurrentFile4 = null;
    
    
                public void onClick(View v) {
                    // Perform action on clicks
                    if (togglebutton.isChecked()) {

                        String strname = spinner.getSelectedItem().toString();
                        if (strname.equals("Select Activity")){
                            strname = mEdit.getText().toString();
                        }
                        String nameStr  = new String("/sdcard/" + strname + "acc" + ".csv");
                        String nameStr2 = new String("/sdcard/" + strname + "gyr" + ".csv");
                        String nameStr3 = new String("/sdcard/" + strname + "ori" + ".csv");
                        String nameStr4 = new String("/sdcard/" + strname + "gra" + ".csv");
    
                        File outputFile = new File(nameStr);
                        File outputFile2 = new File(nameStr2);
                        File outputFile3 = new File(nameStr3);
                        File outputFile4 = new File(nameStr4);
                        
                        try {
                            mCurrentFile = new PrintWriter(new FileOutputStream(outputFile));
                            mCurrentFile2 = new PrintWriter(new FileOutputStream(outputFile2));
                            mCurrentFile3 = new PrintWriter(new FileOutputStream(outputFile3));
                            mCurrentFile4 = new PrintWriter(new FileOutputStream(outputFile4));
    
                        } catch (FileNotFoundException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
    
                        mSensorManager.registerListener(listener = new MySensorListener(mCurrentFile), myAcc , SensorManager.SENSOR_DELAY_UI);
                        mSensorManager.registerListener(listener2 = new MySensorListener(mCurrentFile2), myAcc2 , SensorManager.SENSOR_DELAY_UI);
                        mSensorManager.registerListener(listener3 = new MySensorListener(mCurrentFile3), myAcc3 , SensorManager.SENSOR_DELAY_UI);
                        mSensorManager.registerListener(listener4 = new MySensorListener(mCurrentFile4), myAcc4 , SensorManager.SENSOR_DELAY_UI);
    
                        //mSensorManager.registerListener(listener, myAcc2 , SensorManager.SENSOR_DELAY_FASTEST);
    
                    } else {
                        

                        mSensorManager.unregisterListener(listener, myAcc);
                        mSensorManager.unregisterListener(listener2, myAcc2);
                        mSensorManager.unregisterListener(listener3, myAcc3);
                        mSensorManager.unregisterListener(listener4, myAcc4);
                        mCurrentFile.close();
                        mCurrentFile2.close();
                        mCurrentFile3.close();
                        mCurrentFile4.close();
                        

    
                        
                    }
                }
            });
        }
    }

package my.acc;

import java.io.PrintWriter;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;

public class MySensorListener implements SensorEventListener {

    String comma = new String(",");
  private PrintWriter mCurrentFile;
  
    public MySensorListener( PrintWriter mCurrentFile){
      //Creating a file to print the data into
       
      this.mCurrentFile = mCurrentFile;

    }

    
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
            // TODO Auto-generated method stub

    }


    
    public void onSensorChanged(SensorEvent event) {
        
        StringBuffer buff = new StringBuffer();

        buff.append(String.valueOf(event.sensor.getName()));     
        buff.append(comma);


        buff.append(String.valueOf(event.timestamp));
        

        buff.append(comma);

          buff.append(String.valueOf(event.values[0]));
          buff.append(comma);
          buff.append(String.valueOf(event.values[1]));
          buff.append(comma);
          buff.append(String.valueOf(event.values[2]));

        mCurrentFile.println(buff.toString());
        mCurrentFile.flush();
        

    }


}

I even reported as a bug to google here is their response:

those aren’t Google devices, so you’ll have to talk to Samsung

Answer 1

Seems to be just a Samsung issue. Filing the issue with Google did not help; they referred me back to Samsung.