안드로이드 좌표값 가져오기 레이아웃 뷰

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/btn1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="님은 어디에?" />

    <TextView
        android:id="@+id/text1"
        android:layout_width="match_parent"
        android:layout_height="430dp"
        android:text="어디어디"
        android:textSize="18sp" />
</LinearLayout>