code: public void adjustChildren(int widthMeasureSpec, int heightMeasureSpec) {
          if (Log.isLoggable(TAG, Log.DEBUG)) {
              Log.d(TAG, "adjustChildren: " + mHost + " widthMeasureSpec: "
                      + View.MeasureSpec.toString(widthMeasureSpec) + " heightMeasureSpec: "
                      + View.MeasureSpec.toString(heightMeasureSpec));
          }
  
          int widthHint = View.MeasureSpec.getSize(widthMeasureSpec);
          int heightHint = View.MeasureSpec.getSize(heightMeasureSpec);
          for (int i = 0, N = mHost.getChildCount(); i < N; i++) {
              View view = mHost.getChildAt(i);
              ViewGroup.LayoutParams params = view.getLayoutParams();
              if (Log.isLoggable(TAG, Log.DEBUG)) {
                  Log.d(TAG, "should adjust " + view + " " + params);
              }
              if (params instanceof PercentLayoutParams) {
                  PercentLayoutInfo info =
                          ((PercentLayoutParams) params).getPercentLayoutInfo();
                  if (Log.isLoggable(TAG, Log.DEBUG)) {
                      Log.d(TAG, "using " + info);
                  }
                  if (info != null) {
                      if (params instanceof ViewGroup.MarginLayoutParams) {
                          info.fillMarginLayoutParams((ViewGroup.MarginLayoutParams) params,
                                  widthHint, heightHint);
                      } else {
                          info.fillLayoutParams(params, widthHint, heightHint);
                      }
                  }
              }
          }
      }
docs: Iterates over children and changes their width and height to one calculated from percentage
  values.
  
  @param widthMeasureSpec  Width MeasureSpec of the parent ViewGroup.
  @param heightMeasureSpec Height MeasureSpec of the parent ViewGroup.