Google map is not displaying in my android program : I'm new to the android program now I am working on maps so it's my first sample program in android maps tutorial.I get key from google console and I gave permissions in manifest file so this is

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>



The output of this code is
[enter image description here][1]


  [1]: https://i.stack.imgur.com/Npzp0.jpg

I searched so many websites and I found nothing for my error