Android save view to jpg or png

I would like to write an android app that basically layers an overlay on image on another image and then I would like to save the picture with the overlay as a jpg or png. Basically this will be the whole view that I would like to save.

Sample code would be very helpful.

EDIT:

I tried out your suggestions and am getting a null pointer at the Starred Line.

 import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.os.Bundle;
import android.os.Environment;
import android.widget.LinearLayout;
import android.widget.TextView;

    public class EditPhoto extends Activity {
        /** Called when the activity is first created. */
     LinearLayout ll = null;
     TextView tv = null;
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            tv = (TextView) findViewById(R.id.text);
            ll = (LinearLayout) findViewById(R.id.layout);
            ll.setDrawingCacheEnabled(true);
            Bitmap b = ll.getDrawingCache();
            File sdCard = Environment.getExternalStorageDirectory();
            File file = new File(sdCard, "image.jpg");
            FileOutputStream fos;
      try {
       fos = new FileOutputStream(file);
       *** b.compress(CompressFormat.JPEG, 95,fos);
      } catch (FileNotFoundException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
      }

        }
    }

You can take advantage of a View's drawing cache.

view.setDrawingCacheEnabled(true);
Bitmap b = view.getDrawingCache();
b.compress(CompressFormat.JPEG, 95, new FileOutputStream("/some/location/image.jpg"));

Where view is your View. The 95 is the quality of the JPG compression. And the file output stream is just that.

File sdCard = Environment.getExternalStorageDirectory();
File file = new File(sdCard, "image.jpg");
FileOutputStream fos = new FileOutputStream(file);

Use fos reference as a 3rd parameter of b.compress() method in Moncader's answer. The image will be stored as image.jpg in root directory of your sd card.

Save RelativeLayout or any view to image (.jpg)

String getSaveImageFilePath() {
    File mediaStorageDir = new File(
            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), YOUR_FOLDER_NAME);
    // Create a storage directory if it does not exist
    if (!mediaStorageDir.exists()) {
        if (!mediaStorageDir.mkdirs()) {
            Log.d(YOUR_FOLDER_NAME, "Failed to create directory");
        }
    }

    // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    String imageName = "IMG_" + timeStamp + ".jpg";

    String selectedOutputPath = mediaStorageDir.getPath() + File.separator + imageName;
    Log.d(YOUR_FOLDER_NAME, "selected camera path " + selectedOutputPath);

    view.setDrawingCacheEnabled(true);
    view.buildDrawingCache();
    Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());

    int maxSize = 1080;

    int bWidth = bitmap.getWidth();
    int bHeight = bitmap.getHeight();

    if (bWidth > bHeight) {
        int imageHeight = (int) Math.abs(maxSize * ((float)bitmap.getWidth() / (float) bitmap.getHeight()));
        bitmap = Bitmap.createScaledBitmap(bitmap, maxSize, imageHeight, true);
    } else {
        int imageWidth = (int) Math.abs(maxSize * ((float)bitmap.getWidth() / (float) bitmap.getHeight()));
        bitmap = Bitmap.createScaledBitmap(bitmap, imageWidth, maxSize, true);
    }
    view.setDrawingCacheEnabled(false);
    view.destroyDrawingCache();

    OutputStream fOut = null;
    try {
        File file = new File(selectedOutputPath);
        fOut = new FileOutputStream(file);

        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
        fOut.flush();
        fOut.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return selectedOutputPath;
}