[Solved] How to make floating action bar center bottom [closed]

by


Use a linear layout with horizontal orientation inside a constraint layout. Constraint the linear layout to the bottom, the end, and the start of the constraint layout.

Here’s a simple example.

Layout

<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<LinearLayout
    android:id="@+id/floating_action_bar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginLeft="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginRight="8dp"
    android:layout_marginBottom="8dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    android:orientation="horizontal">

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/a"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/b"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/x"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

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solved How to make floating action bar center bottom [closed]