Dynamically adjusting widget's content and layout to the size the user defined through resize. Android

Thanks to A--C , this is possible for Jellybean and above devices and is simple to implement. Below is the sample code using onAppWidgetOptionsChanged method

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@Override
public void onAppWidgetOptionsChanged(Context context,
        AppWidgetManager appWidgetManager, int appWidgetId, Bundle newOptions) {

    Log.d(DEBUG_TAG, "Changed dimensions");

    // See the dimensions and
    Bundle options = appWidgetManager.getAppWidgetOptions(appWidgetId);

    // Get min width and height.
    int minWidth = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH);
    int minHeight = options
            .getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT);

            // Obtain appropriate widget and update it.
    appWidgetManager.updateAppWidget(appWidgetId,
            getRemoteViews(context, minWidth, minHeight));

    super.onAppWidgetOptionsChanged(context, appWidgetManager, appWidgetId,
            newOptions);
}

/**
 * Determine appropriate view based on width provided.
 * 
 * @param minWidth
 * @param minHeight
 * @return
 */
private RemoteViews getRemoteViews(Context context, int minWidth,
        int minHeight) {
    // First find out rows and columns based on width provided.
    int rows = getCellsForSize(minHeight);
    int columns = getCellsForSize(minWidth);

    if (columns == 4) {
        // Get 4 column widget remote view and return
    } else {
                    // Get appropriate remote view.
        return new RemoteViews(context.getPackageName(),
                R.layout.quick_add_widget_3_1);
    }
}

/**
 * Returns number of cells needed for given size of the widget.
 * 
 * @param size Widget size in dp.
 * @return Size in number of cells.
 */
 private static int getCellsForSize(int size) {
  int n = 2;
  while (70 * n - 30 < size) {
    ++n;
  }
  return n - 1;
 }