Android saving file to external storage

Question

I have a little issue with creating a directory and saving a file to it on my android application. I'm using this piece of code to do this :

String filename = "MyApp/MediaTag/MediaTag-"+objectId+".png"; File file = new File(Environment.getExternalStorageDirectory(), filename); FileOutputStream fos;  fos = new FileOutputStream(file); fos.write(mediaTagBuffer); fos.flush(); fos.close(); 

But it's throwing an exception :

java.io.FileNotFoundException: /mnt/sdcard/MyApp/MediaCard/MediaCard-0.png (No such file or directory)

on that line : fos = new FileOutputStream(file);

If I set the filename to : "MyApp/MediaTag-"+objectId+" it's working, but If I try to create and save the file to an another directory it's throwing the exception. So any ideas what I'm doing wrong?

And another question: Is there any way to make my files private in external storage so user can't see them in gallery, only if he connect his device as Disk Drive?

Answer 1

Use this function to save your bitmap in SD card

private void SaveImage(Bitmap finalBitmap) {      String root = Environment.getExternalStorageDirectory().toString();     File myDir = new File(root + "/saved_images");          if (!myDir.exists()) {                     myDir.mkdirs();                 }     Random generator = new Random();     int n = 10000;     n = generator.nextInt(n);     String fname = "Image-"+ n +".jpg";     File file = new File (myDir, fname);     if (file.exists ())       file.delete ();      try {         FileOutputStream out = new FileOutputStream(file);         finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);         out.flush();         out.close();      } catch (Exception e) {          e.printStackTrace();     } } 

and add this in manifest

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  

EDIT: By using this line you will be able to see saved images in the gallery view.

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,                          Uri.parse("file://" + Environment.getExternalStorageDirectory()))); 

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