FloatingActionButton appearing under screen when using TabLayout and ViewPager

Question

Take a look at the FAB below:

It's not appearing unless I collapse the Toolbar. Here's my XML:

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentStart="true"
    android:layout_below="@+id/toolbar"
    android:layout_marginTop="0dp"
    android:animateLayoutChanges="true"
    android:background="@android:color/white"
    android:layoutDirection="locale"
    android:orientation="vertical"
    android:padding="0dp">

    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/cLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/list"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginTop="0dp" />

        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:background="@color/accent"
            android:src="@drawable/ic_add"
            app:layout_anchor="@id/list"
            app:layout_anchorGravity="bottom|end" />
    </android.support.design.widget.CoordinatorLayout>
</RelativeLayout>

Why is this happening if I set no behavior for the FAB? Is there any property I should add to anything so I could prevent this behaviour?

Remove this line from the top relative layout `android:layout_below="@+id/toolbar"` — cafebabe1991, Sep 07 '16 at 05:49
had the exact same problem once, provide your entire layout code. without it solving this problem isn't going to be any feasible. — Darshan Miskin, Sep 07 '16 at 07:50

Burhanuddin Rashid · Accepted Answer · 2016-09-07T09:26:23.197

3

Simply remove your FloatingActionButton from each Fragment and add it to your Activity. This way not only the FAB stays in place but it also fixes your problem. Then you can use getActivity().findViewByIf(id) in your Fragment and set an onClickListener in each Fragment.

edited Sep 07 '16 at 09:26

answered Sep 07 '16 at 06:20

Burhanuddin Rashid

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The problem with the click event. How to find which fragment currently visible ? – Mitesh Vanaliya Aug 24 '18 at 14:00
You can try this approaches. 1.https://stackoverflow.com/questions/18609261/getting-the-current-fragment-instance-in-the-viewpager 2.https://pupli.net/2017/06/05/get-current-fragment-displayed-in-viewpager-on-android/ – Burhanuddin Rashid Aug 27 '18 at 06:31

score 0 · Answer 2 · answered Sep 07 '16 at 05:50

I suggest you remove your RelativeLayout and restructure your layout like this:

<android.support.design.widget.CoordinatorLayout
android:id="@+id/cLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="0dp" />
<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="5dp"
    android:background="@color/accent"
    android:src="@drawable/ic_add"
    app:layout_anchor="@id/list"
    app:layout_anchorGravity="bottom|end" />
<com.rey.material.widget.ProgressView
    android:id="@+id/progress_bar"
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    app:pv_autostart="true"
    app:pv_circular="true"
    app:pv_progressMode="indeterminate"
    app:pv_progressStyle="@style/Material.Drawable.CircularProgress" />
</android.support.design.widget.CoordinatorLayout>

score 0 · Answer 3 · answered Sep 07 '16 at 05:51

Coordinator layout does not behave like relative layout, you can not have multiple children without disturbing each other. so just make one child of coordinator layout i.e relative layout and inside it add recyclerView and floatingActionButton

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"> 

          <android.support.v7.widget.RecyclerView
              android:id="@+id/list"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
               android:layout_marginTop="0dp" />

                <android.support.design.widget.FloatingActionButton
                    android:id="@+id/fab"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_margin="5dp"
                    android:background="@color/accent"
                    android:src="@drawable/ic_add"
                    app:layout_anchor="@id/list"
                    app:layout_anchorGravity="bottom|end" /></RelativeLayout>

FloatingActionButton appearing under screen when using TabLayout and ViewPager

3 Answers3