Android-Google Maps API不显示地图

Question

I am using google maps API with my android app and its not showing anything but blank maps.

Here is the screen shot.

I have obtained an API key from google developers and pasted into google_maps_api.xml both in debug and release version.

<string name="google_maps_key" translatable="false" templateMergeStrategy="preserve">
        AIzaSyCAiL844hgfM2S_kDApCrITIzj-S5wgBzA
</string>

I registered my app on google developers account also Screenshot

I did not do anything with the maps but just selected the MapsActivity from wizard.

Permissions:

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

Answer 1

There are a few reasons why your Google Map is not showing nothing.

Youu have to put something like this A5:1A:89:84:A9:5C:B7:13:6D:7C:28:20:C5:65:A4:F4:97:E4:98:99;co.mipackage.example. The number, in my case A5:1A:89:84:A9:5C:B7:13:6D:7C:28:20:C5:65:A4:F4:97:E4:98:99 have to be the assigned number for your computer, so you have to see if it is correct. The path of the package have to be correct too.

Answer 2

Well thank you everyone for suggestions but I have solved my issue.

Problem was with my Package name it was com.example.picturetrackerapp in my project but was registered as com.example.picturetracker on google developers account. I changed it and my problem solved