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POGoogle Maps Android Api V2 - maps dont display
 

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  1. POGoogle Maps Android Api V2 - maps dont display
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    <p>I followed this tutorial: <a href="https://stackoverflow.com/questions/16596715/how-can-i-create-an-android-application-in-android-studio-that-uses-the-google-m">How can I create an Android application in Android Studio that uses the Google Maps Api v2?</a></p> <p>And I compiled and get sample maps application running on my device. The only problem is that maps dont display in my application, all I got is blank screen.</p> <p>My AndroidManifest.xml (all i changed is apikey)</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.mapdemo" android:versionCode="3" android:versionName="2.2.1"&gt; &lt;permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE" android:protectionLevel="signature"/&gt; &lt;uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE"/&gt; &lt;!-- Copied from Google Maps Library/AndroidManifest.xml. --&gt; &lt;uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/&gt; &lt;uses-permission android:name="android.permission.INTERNET"/&gt; &lt;uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/&gt; &lt;!-- External storage for caching. --&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt; &lt;!-- My Location --&gt; &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/&gt; &lt;!-- Maps API needs OpenGL ES 2.0. --&gt; &lt;uses-feature android:glEsVersion="0x00020000" android:required="true"/&gt; &lt;!-- End of copy. --&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/demo_title" android:hardwareAccelerated="true"&gt; &lt;!-- ** You need to replace the key below with your own key. ** The example key below will not be accepted because it is not linked to the certificate which you will use to sign this application. See: https://developers.google.com/maps/documentation/android/start for instructions on how to get your own key. --&gt; &lt;meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="MyOwnGeneratedKey"/&gt; &lt;activity android:name=".MainActivity"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN"/&gt; &lt;category android:name="android.intent.category.LAUNCHER"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name=".BasicMapActivity" android:label="@string/basic_map"/&gt; &lt;activity android:name=".CameraDemoActivity" android:label="@string/camera_demo"/&gt; &lt;activity android:name=".CircleDemoActivity" android:label="@string/circle_demo"/&gt; &lt;activity android:name=".EventsDemoActivity" android:label="@string/events_demo"/&gt; &lt;activity android:name=".GroundOverlayDemoActivity" android:label="@string/groundoverlay_demo"/&gt; &lt;activity android:name=".LayersDemoActivity" android:label="@string/layers_demo"/&gt; &lt;activity android:name=".LegalInfoActivity" android:label="@string/legal_info"/&gt; &lt;activity android:name=".LocationSourceDemoActivity" android:label="@string/locationsource_demo"/&gt; &lt;activity android:name=".MarkerDemoActivity" android:label="@string/marker_demo"/&gt; &lt;activity android:name=".MultiMapDemoActivity" android:label="@string/multi_map_demo"/&gt; &lt;activity android:name=".MyLocationDemoActivity" android:label="@string/my_location_demo"/&gt; &lt;activity android:name=".OptionsDemoActivity" android:label="@string/options_demo"/&gt; &lt;activity android:name=".PolygonDemoActivity" android:label="@string/polygon_demo"/&gt; &lt;activity android:name=".PolylineDemoActivity" android:label="@string/polyline_demo"/&gt; &lt;activity android:name=".ProgrammaticDemoActivity" android:label="@string/programmatic_demo"/&gt; &lt;activity android:name=".RawMapViewDemoActivity" android:label="@string/raw_mapview_demo"/&gt; &lt;activity android:name=".RetainMapActivity" android:label="@string/retain_map"/&gt; &lt;activity android:name=".SaveStateDemoActivity" android:label="@string/save_state_demo"/&gt; &lt;activity android:name=".TileOverlayDemoActivity" android:label="@string/tile_overlay_demo"/&gt; &lt;activity android:name=".UiSettingsDemoActivity" android:label="@string/uisettings_demo"/&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>I created key in console using my debug fingerprint, it looks like this:</p> <pre><code>A1:FE:B5:E2:5E:0E:1A:8E:CC:8F:07:CC:4D:D0:95:13:0B:E7:1B:EC;com.example.mapdemo </code></pre> <p>Logcat for maps:</p> <pre><code>08-03 02:41:14.330 13942-14784/com.example.mapdemo I/Google Maps Android API: Failed to contact Google servers. Another attempt will be made when connectivity is established. 08-03 02:41:29.840 13942-14812/com.example.mapdemo E/Google Maps Android API: Failed to load map. Error contacting Google servers. This is probably an authentication issue (but could be due to network errors). </code></pre>
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    1. CO[check this post](http://stackoverflow.com/questions/17679317/android-google-maps-v2-authentication-error/17684309#17684309) , if it is the case.
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    2. COyou have to use a Release key, not a debug key.
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