habitica-android/Habitica/res/layout/dialog_insufficient_gems.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical">
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="12dp"
        android:scaleType="center" />
    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal" />
    <LinearLayout
        android:id="@+id/purchase_wrapper"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/layout_rounded_bg_brand_700"
        android:layout_marginTop="@dimen/spacing_medium"
        android:padding="@dimen/spacing_medium"
        android:gravity="center">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/gems_4" />
        <TextView
            android:id="@+id/purchase_textview"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            style="@style/Subheader1"
            tools:text="4 Gems"
            android:gravity="center"/>
        <Button
            android:id="@+id/purchase_button"
            android:layout_width="wrap_content"
            android:layout_height="30dp"
            style="@style/HabiticaButton.Purple"
            android:minWidth="40dp"
            tools:text="$0.99" />
    </LinearLayout>
</LinearLayout>