Sid Sid - 3 years ago 210
Android Question

Floating action button layout anchor not working

I want a floating action button in between my two relative layouts.

For this I have taken parent layout as coordinator layout and specified the anchor and anchor gravity to fab button.

But its not getting set where I want it to be.

I want it to set at right corner of relative layout6 at the end and between relative layout6 and relative layout3 on right corner.

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:background="@color/bg"
android:orientation="vertical">

<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">

<RelativeLayout
android:id="@+id/relativeLayoutParent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/imageView5"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginEnd="30dp"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_marginStart="30dp"
android:layout_marginTop="30dp"
android:background="@color/colorAccent">

<RelativeLayout
android:id="@+id/relativeLayout6"
android:layout_width="match_parent"
android:layout_height="240dp"
android:layout_centerHorizontal="true">

<ImageView
android:id="@+id/imageView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:scaleType="fitXY"
app:srcCompat="@drawable/profile_img" />

</LinearLayout>

</RelativeLayout>


<RelativeLayout
android:id="@+id/relativeLayout3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/relativeLayout6">


</RelativeLayout>


<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_anchorGravity="center"
app:layout_anchor = "@id/linearLayout"
android:layout_margin="@dimen/fab_margin"
app:srcCompat="@android:drawable/ic_dialog_email" />
</LinearLayout>

</ScrollView>


</android.support.design.widget.CoordinatorLayout>


Please help.. Thank you.

Answer Source

Put FloatingActionButton inside CoordinatorLayout. The anchor property only works inside the CoordinatorLayout.
One more thing: Your layout is messy. Please arrange it.

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:background="@color/bg"
android:orientation="vertical">

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:fillViewport="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <RelativeLayout
            android:id="@+id/relativeLayoutParent"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_above="@+id/imageView5"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_marginEnd="30dp"
            android:layout_marginLeft="30dp"
            android:layout_marginRight="30dp"
            android:layout_marginStart="30dp"
            android:layout_marginTop="30dp"
            android:background="@color/colorAccent" />

        <RelativeLayout
            android:id="@+id/relativeLayout6"
            android:layout_width="match_parent"
            android:layout_height="240dp"
            android:layout_centerHorizontal="true" />

        <ImageView
            android:id="@+id/imageView7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:scaleType="fitXY"
            app:srcCompat="@drawable/profile_img" />

    </LinearLayout>


    <RelativeLayout
        android:id="@+id/relativeLayout3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentStart="true"
        android:layout_below="@+id/relativeLayout6" />
</ScrollView>

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="@dimen/fab_margin"
    app:layout_anchor="@id/linearLayout"
    app:layout_anchorGravity="center"
    app:srcCompat="@android:drawable/ic_dialog_email" />

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download