How to take a screenshot and share it programmatically

Try this for taking screenshot of current Activity:

Android 2.2 :

private static Bitmap takeScreenShot(Activity activity)
{
    View view = activity.getWindow().getDecorView();
    view.setDrawingCacheEnabled(true);
    view.buildDrawingCache();
    Bitmap b1 = view.getDrawingCache();
    Rect frame = new Rect();
    activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
    int statusBarHeight = frame.top;

    DisplayMetrics displaymetrics = new DisplayMetrics(); 
    mContext.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);

    int width = displaymetrics.widthPixels;
    int height = displaymetrics.heightPixels;

    Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height  - statusBarHeight);
    view.destroyDrawingCache();
    return b;
}
private static void savePic(Bitmap b, String strFileName)
{
    FileOutputStream fos = null;
    try
    {
        fos = new FileOutputStream(strFileName);
        if (null != fos)
        {
            b.compress(Bitmap.CompressFormat.PNG, 90, fos);
            fos.flush();
            fos.close();
        }
    }
    catch (FileNotFoundException e)
    {
        e.printStackTrace();
    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
}