Android Google Awareness APIs

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Remarks

Remember, the Snapshot API is used to request current state while the Fence API continuously checks for a specified state and sends callbacks when an app isn't running.

Overall, there are a few basic steps in order to use the Snapshot API or Fence API:

  • Get an API key from the Google Developers Console

  • Add necessary permissions and API key to the manifest:

     <!-- Not required for getting current headphone state -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <!-- Only required for actvity recognition -->
     <uses-permission android:name="com.google.android.gms.permission.ACTIVITY_RECOGNITION"/>
    
     <!-- Replace with your actual API key from console -->
     <meta-data android:name="com.google.android.awareness.API_KEY"
                android:value="YOUR_API_KEY"/>
    
     <!-- Required for Snapshot API only -->
     <meta-data android:name="com.google.android.geo.API_KEY"
                android:value="YOUR_API_KEY"/> 
    
  • Initalize the GoogleApiClient somewhere, preferably in your activity's onCreate() method.

     GoogleApiClient client = new GoogleApiClient.Builder(context)
         .addApi(Awareness.API)
         .build();
     client.connect();
    
  • Call the API of your choice

  • Parse result

An easy way to check for the needed user permission is a method such as this:

private boolean isFineLocationGranted() {
    if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
        Log.e(getClass().getSimpleName(), "Fine location permission not granted!");
    }
}


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