How to save an image to Internal Storage and then show it on another activity?

Hi all,

I have two activities on which I need to show the same image. On the first screen, I download it from a web URL and show it but I don't want to do the same on second screen. I want to save it to Internal Storage when it gets downloaded on the first screen and then simply retrieve it from there to show on second activity. How can I do that?

Here is my code that I am using on first activity:

    protected override void OnCreate (Bundle bundle)
    {
        base.OnCreate (bundle);

        this.SetContentView (Resource.Layout.Main);

        String uriString = this.GetUriString();
        WebClient web = new WebClient ();
        web.DownloadDataCompleted += new DownloadDataCompletedEventHandler(web_DownloadDataCompleted);
        web.DownloadDataAsync (new Uri(uriString));
    }

    void web_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
    {
        if (e.Error != null)
        {
            RunOnUiThread(() =>
                Toast.MakeText(this, e.Error.Message, ToastLength.Short).Show());
        }
        else
        {
            Bitmap bm = BitmapFactory.DecodeByteArray(e.Result, 0, e.Result.Length);

            // THIS IS WHERE I NEED TO SAVE THE IMAGE IN INTERNAL STORAGE //

            RunOnUiThread(() =>
                {
                    ProgressBar pb = this.FindViewById<ProgressBar> (Resource.Id.custLogoProgressBar);
                    pb.Visibility = ViewStates.Gone;

                    ImageView imgCustLogo = FindViewById<ImageView>(Resource.Id.imgCustLogo);
                    imgCustLogo.SetImageBitmap(bm);
                });
        }
    }