<?xml version="1.0" encoding="utf-8"?>
<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=".BtnImageActivity">

    <LinearLayout
        android:id="@+id/ll_group"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent">

        <EditText
            android:id="@+id/et_color"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="10"/>
        <Button
            android:id="@+id/btn_choose"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Choose"/>
        <ImageView
            android:id="@+id/img_preview"
            android:layout_width="200dp"
            android:layout_height="200dp" />
        <Button
            android:id="@+id/btn_add"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Add"/>
    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintTop_toBottomOf="@id/ll_group"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
        android:orientation="vertical"/>


</android.support.constraint.ConstraintLayout>