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="70dp"
    android:orientation="horizontal"
    android:weightSum="1"
    android:layout_gravity="center"
    android:background="@drawable/bg"
    android:padding="8dp"
    android:layout_margin="8dp"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/tv_nama"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="0.2"
        android:text="@string/nama"
        android:textAlignment="center"
        android:textColor="@android:color/black"
        android:textSize="20sp"
        android:gravity="center"
        />
    <EditText
        android:id="@+id/edt"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="0.5"
        />
    <Button
        android:id="@+id/btn"
        android:layout_width="0dp"
        android:layout_height="35dp"
        android:layout_weight="0.3"
        android:background="@drawable/btn_bg"
        android:text="@string/call_my_name"
        android:textColor="@android:color/white"
        android:textSize="11sp"/>
</LinearLayout>