SPHV_activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/grey">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:layout_gravity="bottom"
        android:gravity="center"
        android:orientation="horizontal">
        <ImageButton
            android:id="@+id/rejectBtn"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:background="@drawable/ic_cancel"/>
        <ImageButton
            android:id="@+id/acceptBtn"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_marginLeft="30dp"
            android:background="@drawable/ic_heart"/>
    </LinearLayout>
    <com.mindorks.placeholderview.SwipePlaceHolderView
        android:id="@+id/swipeView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</FrameLayout>