<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:paddingBottom="@dimen/activity_vertical_margin"
        tools:context="id.ac.stekom.android.belajar.tombol.MainActivity" android:onClick="onPressme">

    <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Tampilkan"
            android:id="@+id/button"
            android:layout_centerVertical="true"
            android:layout_centerHorizontal="true"
            android:singleLine="false"

            android:onClick="onPressme"/>

</RelativeLayout>