Access to internal storage Android Wear - android-studio

Question

I'm trying to write on a file the readings of the sensors. I have this code.. I need to see the data i'm writing but I don't know how to access to it. I downloaded the File Manager for android wear but It doesn't allow me to enter to the Storage folder. Below is my code, hope you can help it
public class Logging extends Activity implements SensorEventListener {
DecimalFormat df =new DecimalFormat("##.##");
public static final String file=("Project.txt");
Boolean flag=true;
FileOutputStream outputStream;
TextView displayReading1;
TextView displayReading2;
TextView displayReading3;
TextView displayReading4;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_logging);
Button start=(Button)findViewById(R.id.StartButton);
Button stop=(Button)findViewById(R.id.StopButton);
//BUTTON START
start.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
flag=true;
}
}); {
}
//BUTTON STOP
stop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
flag=false;
}
});{
}
SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
Sensor accSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
Sensor rotSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR);
Sensor gravitySensor = sensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY);
Sensor gyroSensor = sensorManager.getDefaultSensor((Sensor.TYPE_GYROSCOPE));
sensorManager.registerListener(this, accSensor, 100000);
sensorManager.registerListener(this, rotSensor, 100000);
sensorManager.registerListener(this, gravitySensor, 100000);
sensorManager.registerListener(this, gyroSensor, 100000);
displayReading1 = (TextView) findViewById(R.id.acc_sensor);
displayReading2 = (TextView) findViewById(R.id.rotational_sensor);
displayReading3 = (TextView) findViewById(R.id.gravity_sensor);
displayReading4 = (TextView) findViewById(R.id.gyro_sensor);
displayReading1.setTextSize(14f);
displayReading2.setTextSize(14f);
displayReading3.setTextSize(14f);
displayReading4.setTextSize(14f);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_logging, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER)
displayReading1.setText("Accelerometer (m/s2): " +"\nX"+" " +df.format(event.values[0]) + "\nY"+" " + df.format(event.values[1]) + "\nZ"+" " + df.format(event.values[2]));
float X11=event.values[0];
float X12=event.values[1];
float X13=event.values[2];
if( flag) {
try {
outputStream = openFileOutput(file, Context.MODE_PRIVATE);
outputStream.write(("Accelerometer (m/s2): " + "\nX" + " " + df.format(X11) + "\nY" + " " + df.format(X12) + "\nZ" + " " + df.format(X13)
).getBytes());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException f) {
System.out.println("Exception");
}
}
if (event.sensor.getType() == Sensor.TYPE_ROTATION_VECTOR)
displayReading2.setText("Rotational Vector: " + "\nX"+" " + df.format(event.values[0]) + "\nY"+" " + df.format(event.values[1]) + "\nZ"+" " + df.format(event.values[2]));
float X21=event.values[0];
float X22=event.values[1];
float X23=event.values[2];
if( flag) {
try {
outputStream=openFileOutput(file, Context.MODE_PRIVATE);
outputStream.write(("Rotational Vector : " +"\nX"+" " +df.format(X21) + "\nY"+" " + df.format(X22) + "\nZ"+" " + df.format(X23)).getBytes());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException f) {
System.out.println("Exception");
}}
if (event.sensor.getType() == Sensor.TYPE_GRAVITY)
displayReading3.setText("Gravity (m/s2): " + "\nX"+" " + df.format(event.values[0]) + "\nY"+" " + df.format(event.values[1]) + "\nZ"+" " + df.format(event.values[2]));
if (event.sensor.getType() == Sensor.TYPE_GYROSCOPE)
displayReading4.setText("Gyroscope (rad/s): " + "\nX"+" " + df.format(event.values[0]) + "\nY"+" " + df.format(event.values[1]) + "\nZ"+" " + df.format(event.values[2]));
float X31=event.values[0];
float X32=event.values[1];
float X33=event.values[2];
if( flag) {
try {
outputStream = openFileOutput(file, Context.MODE_PRIVATE);
outputStream.write(("Gyroscope (rad/s): " + "\nX" + " " + df.format(X31) + "\nY" + " " + df.format(X32) + "\nZ" + " " + df.format(X33)
).getBytes());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException f) {
System.out.println("Exception");
}
}
if (!flag){
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
#Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}

Answer 1

It depends what file storage you are trying to access. I have used this for both Android and Android Wear. This accesses the app's Document Directory which is only accessible from the app and not by other apps. When I use this for internal storage will share that code as well.
This simply makes a toast showing all files in this directory one by one:
public void listFiles(View view) {
PackageManager m = getPackageManager();
String s = getPackageName();
try {
PackageInfo p = m.getPackageInfo(s, 0);
s = p.applicationInfo.dataDir;
} catch (PackageManager.NameNotFoundException e) {
Log.w("yourtag", "Error Package name not found ", e);
}
Context context = getApplicationContext();
File folder = new File(context.getFilesDir().toString());
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < listOfFiles.length; i++) {
if (listOfFiles[i].isFile()) {
Toast.makeText(MainActivity.this, "File " + listOfFiles[i].getName(),
Toast.LENGTH_SHORT).show();
//System.out.println("File " + listOfFiles[i].getName());
} else if (listOfFiles[i].isDirectory()) {
Toast.makeText(MainActivity.this, "File " + listOfFiles[i].getName(),
Toast.LENGTH_SHORT).show();
//System.out.println("Directory " + listOfFiles[i].getName());
}
}
}
This is also saving a file to the external storage of the watch that can be accessed with other apps:
private final String fileName = "aq.pcm";
private String TAGFILE = "ExternalFileWriteReadActivity";
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
// Enables Ambient mode.
mAmbientController = AmbientMode.attachAmbientSupport(this);
//Copy files
if (Environment.MEDIA_MOUNTED.equals(Environment
.getExternalStorageState())) {
File outFile = new File(
getExternalFilesDir(Environment.DIRECTORY_PICTURES),
fileName);
if (!outFile.exists())
copyImageToMemory(outFile);
}
}
// Copy file methods
private void copyImageToMemory(File outFile) {
try {
BufferedOutputStream os = new BufferedOutputStream(
new FileOutputStream(outFile));
BufferedInputStream is = new BufferedInputStream(getResources()
.openRawResource(R.raw.sound));
copy(is, os);
} catch (FileNotFoundException e) {
Log.e(TAGFILE, "FileNotFoundException");
}
}
private void copy(InputStream is, OutputStream os) {
final byte[] buf = new byte[1024];
int numBytes;
try {
while (-1 != (numBytes = is.read(buf))) {
os.write(buf, 0, numBytes);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
os.close();
} catch (IOException e) {
Log.e(TAGFILE, "IOException");
}
}
}