In Android Studio how to view what comes off the screen?

Question

I’m using text and an image with that they comes off the screen but with ScrollView sailing is possible but in Android Studio on the small screen is the phone to follow the design what comes out screen you do not see it, I would like to pull the screen up Android Studio to be able to observe and put some buttons

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/scrollView">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            >
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="Texto"
        android:id="@+id/textView" />

        </LinearLayout>

            <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/f1" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">
                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:background="@drawable/f1" />
            </LinearLayout>




        </LinearLayout>
    </ScrollView>
</RelativeLayout>