private void layoutChildren() {
        int offset = mPtrIndicator.getCurrentPosY();
        int paddingLeft = getPaddingLeft();
        int paddingTop = getPaddingTop();

        if (mHeaderView != null) {
            MarginLayoutParams lp = (MarginLayoutParams) mHeaderView.getLayoutParams();
            final int left = paddingLeft + lp.leftMargin;
            // enhance readability(header is layout above screen when first init)
            final int top = -(mHeaderHeight - paddingTop - lp.topMargin - offset);
            final int right = left + mHeaderView.getMeasuredWidth();
            final int bottom = top + mHeaderView.getMeasuredHeight();
            mHeaderView.layout(left, top, right, bottom);
            if (isDebug()) {
                PtrCLog.d(LOG_TAG, "onLayout header: %s %s %s %s", left, top, right, bottom);
            }
        }
        if (mContent != null) {
            if (isPinContent()) {
                offset = 0;
            }
            MarginLayoutParams lp = (MarginLayoutParams) mContent.getLayoutParams();
            final int left = paddingLeft + lp.leftMargin;
            final int top = paddingTop + lp.topMargin + offset;
            final int right = left + mContent.getMeasuredWidth();
            final int bottom = top + mContent.getMeasuredHeight();
            if (isDebug()) {
                PtrCLog.d(LOG_TAG, "onLayout content: %s %s %s %s", left, top, right, bottom);
            }
            mContent.layout(left, top, right, bottom);
        }
    }
This layout view for "Pull to Refresh(Ptr)" support all of the view, you can contain everything you want.
support: pull to refresh / release to refresh / auto refresh / keep header view while refreshing / hide header view while refreshing
It defines {@link PtrUIHandler}, which allows you customize the UI easily.
common/src/main/java/com/sxjs/common/widget/pulltorefresh/PtrFrameLayout.java