activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView3"
        android:layout_width="315dp"
        android:layout_height="38dp"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:layout_marginEnd="0dp"
        android:layout_marginBottom="9dp"
        android:text="Developed by FatihHAS"
        android:textSize="20dp" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="43dp"
        android:layout_above="@+id/image"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        android:layout_marginTop="85dp"
        android:layout_marginEnd="0dp"
        android:layout_marginBottom="172dp"
        android:text="     Mikrofona basın ve konuşmaya başlayın."
        android:textSize="20dp" />

    <ImageButton
        android:id="@+id/image"
        android:layout_width="150dp"
        android:layout_height="150dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:layout_centerInParent="true"
        android:layout_marginStart="128dp"
        android:layout_marginEnd="133dp"
        android:layout_marginBottom="281dp"
        android:background="@null"
        android:scaleType="fitCenter"
        android:src="@drawable/ic_mic" />

</RelativeLayout>