headerDisplay doesn't work whatever.

[bytebeats]

There is my header layout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl_item_title"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/z_activity_bg"
    android:orientation="horizontal"
    android:paddingBottom="@dimen/margin_5"
    android:paddingTop="@dimen/margin_5"
    app:slm_headerDisplay="inline|sticky"
    app:slm_isHeader="true">
    <TextView
        android:id="@+id/tv_item_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_marginLeft="@dimen/margin_15"
        android:textColor="@color/e_hint"
        android:textSize="@dimen/font_15"
        tools:text="Title" />
    <TextView
        android:id="@+id/tv_item_title_desc"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:layout_marginRight="@dimen/margin_15"
        android:text=""
        android:textColor="@color/e_hint"
        android:textSize="@dimen/font_13"
        tools:text="Description" />
</RelativeLayout>

And I added app:slm_headerDisplay="inline|sticky" and app:slm_isHeader="true" explicitly. Meanwhile, on method onBindViewHolder, codes below were added just like the example did:

final GridSLM.LayoutParams layoutParams = GridSLM.LayoutParams.from(holder.itemView.getLayoutParams());
        if (viewType == TYPE_GROUP) {
            layoutParams.headerDisplay = GridSLM.LayoutParams.HEADER_STICKY & GridSLM.LayoutParams.HEADER_INLINE;
            if (layoutParams.isHeaderInline() || !layoutParams.isHeaderOverlay()) {
                layoutParams.width = ViewGroup.LayoutParams.MATCH_PARENT;
            } else {
                layoutParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
            }
//            layoutParams.headerEndMarginIsAuto = false;
//            layoutParams.headerStartMarginIsAuto = false;
        }
        layoutParams.setSlm(LinearSLM.ID);
        layoutParams.setColumnWidth(ViewGroup.LayoutParams.MATCH_PARENT);
        layoutParams.setFirstPosition(product.sectionFirstPosition);
        holder.itemView.setLayoutParams(layoutParams);

Every thing works well except for the header. So, what did I do wrong or what should I do?

[khajievN]

I have also this issue please can someone solve this issue