Android google reklam

Merhaba arkadaşlar, Android studio da google Admob test gözükmüyor birde textWiew de yazdığıdım yazılar kayıyor.

<?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="600dp"
    android:orientation="vertical"
    tools:context=".Itt_Tarihi1">

    <Button
        android:id="@+id/button3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button" />

    <TextView
        android:layout_width="360dp"
        android:layout_height="300dp"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="150dp"
        android:text="@string/cog_str1"
        android:textAlignment="center"
        android:textSize="17sp"></TextView>

    <LinearLayout
        android:layout_marginTop="60dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <com.google.android.gms.ads.AdView
            xmlns:ads="http://schemas.android.com/apk/res-auto"
            android:id="@+id/adView"
            android:layout_width="410dp"
            android:layout_height="40dp"
            android:layout_centerHorizontal="true"
            android:layout_alignParentBottom="true"
            ads:adSize="FULL_BANNER"
            ads:adUnitId="ca-app-pub-3940256099942544/6300978111">
        </com.google.android.gms.ads.AdView>

    </LinearLayout>

Telefondan görünüm : Yazılar kaymış ve reklem test reklam gözükmüyor.

http://[url=https://hizliresim.com/QigtMR][img]https://i.hizliresim.com/QigtMR.jpg[/img][/url]
 

android studio emulator görünüm

https://i.hizliresim.com/JJvWtH.jpg