Using shared preferences to store image URLs

Question

I am trying to figure out how I would achieve storing image URLs via onClick of an item button so they can be accessed by another class.

I have looked around and saw that it would be best to achieve this using shared preferences.

I have never used shared preferences before so I am a little confused as how I will be able to achieve this because I would like to get the URL from the String I have called "mImageUrl"

I know my String "mImageUrl" will give me the URL of the image that is currently being viewed, so I like to somehow store the String/URL from my String to shared preferences so the specific URLs can used via another class.

Would using shared prefs be a good way to achieve my requirement, Any guidance would be appreciated thanks

    @Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.SetWallpaper:
        new SetWallpaperAsync(getActivity()).execute(mImageUrl);

        break;


    case R.id.SaveWallpaper:
        new SaveWallpaperAsync(getActivity()).execute(mImageUrl);

        break;

    case R.id.FavouriteWallpaper:
        //Use shared preferences here somehow:


                SharedPreferences preferences = this.getActivity().getSharedPreferences("pref",0);

        SharedPreferenceUtil.setSharedPreference(context, "ImageKey", mImageUrl);

        String url = SharedPreferenceUtil.getSharedPreference(context,"ImageKey",null);

        if(url != null){
           // set image source here..
        }

        break;

    }
    return super.onOptionsItemSelected(item);
}

Answer 1

Try this code:

Save in SharedPreferences :

SharedPreferences prefs;
prefs = PreferenceManager.getDefaultSharedPreferences(contextActivity);
SharedPreferences.Editor editor = prefs.edit();
editor.putString("imgUrl", UrlString);
editor.commit();

To retrive value:

prefs = PreferenceManager.getDefaultSharedPreferences(contextActivity);
prefs.getString("imgUrl", null);