You don't need to save it to the drawable. These are the two steps:
1.Convert the captured image to Bitmap
2.Set the bitmap image to an imageview
Ref: StackOverflow Answer
private void takePicture(){ //you can call this every 5 seconds using a timer or whenever you want
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST && resultCode == Activity.RESULT_OK) {
Bitmap picture = (Bitmap) data.getExtras().get("data");//this is your bitmap image and now you can do whatever you want with this
imageView.setImageBitmap(picture); //for example I put bmp in an ImageView
}
}