Get Drawable path of images

Question

I am implementing a horizontal gallery in my Fragment Activity, but I can't get my images, therefore returning a NullPointerException:

LinearLayout myGallery;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);
    }
    myGallery = (LinearLayout) getActivity().findViewById(R.id.mygallery);

    String targetPath = "assets/";

    Toast.makeText(getActivity(), targetPath, Toast.LENGTH_LONG).show();
    File targetDirector = new File(targetPath);

    File[] files = targetDirector.listFiles();
    for (File file : files){ //NullPointerException here
        myGallery.addView(insertPhoto(file.getAbsolutePath()));
    }
}

And this is the path of my images:

The NullPointerException points at the for loop for (File file ; files){ ...

What is the right way to reach my folder?

Answer 1

The right way is... Put your images in the assets folder (or in raw).
Not in res.

Create the assets folder, if not already existing.
At the same level of res , not inside it.

To get your resource, then use something like this (in this case the file is under the gfx folder, under assets):

final InputStream is = getApplicationContext().getAssets().open("gfx/" + fileName);
final Drawable drw = Drawable.createFromStream(is, null);

And you have your drawable out of assets

---

If you want to put the resources directly into assets rather than adding a folder, simply chang this

getApplicationContext().getAssets().open("gfx/" + fileName);

to

getApplicationContext().getAssets().open(fileName);