Using my Android device how can I detect if the user is walking, cycling or driving? I have checked the Google Fit app. It differentiates between running, cycling and driving. I am puzzled about what algorithms I should use to differentiate between these activities.
I know I would have to use the accelerometer sensor. But still I can't differentiate these activities.
This question is quite old, but since there are new technologies out there, i thought it was worth mentioning, if anyone is still encountering this issue.
I can come up with 3 options :
You could use a free sdk of Neura which can send you an event when your user starts/finishes driving, start/finish walking, start/finish running, read more of the events you can get from Neura.
Check out this git project : Basically, the project has all the events that Nuera can detect. Its very easy to just take this project and make it your own.
I highly recommend using this Neura sdk option.
You could use google's FenceApi in order to declare fences. For example, this is a code for detecting a driving fence.
Though this approach seems good, i've faced with the fact that this api didn't tell me sometimes when the events happened, and sometimes it took a long time after i started walking/running when the api told me of that event.
a. include dependency to your app's build.gradle file :
compile 'com.google.android.gms:play-services-location:+'
compile 'com.google.android.gms:play-services-contextmanager:+'
b. Manifest definitions :
<uses-permission android:name="com.google.android.gms.permission.ACTIVITY_RECOGNITION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.awareness.API_KEY"
android:value="PUT_YOUR_AWARENESS_KEY_HERE" />
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
PUT_YOUR_AWARENESS_KEY_HERE : You need to generate a key here.
c. Your MainActivity class - explanations attached to the code :
public class MainActivity extends Activity {
private GoogleApiClient mGoogleApiClient;
private PendingIntent mPendingIntent;
private FenceReceiver mFenceReceiver;
// The intent action which will be fired when your fence is triggered.
private final String FENCE_RECEIVER_ACTION = BuildConfig.APPLICATION_ID + "FENCE_RECEIVER_ACTION";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGoogleApiClient = new GoogleApiClient.Builder(this).addApi(Awareness.API).build();
mGoogleApiClient.connect();
// Set up the PendingIntent that will be fired when the fence is triggered.
mPendingIntent = PendingIntent.getBroadcast(this, 0, new Intent(FENCE_RECEIVER_ACTION), 0);
// The broadcast receiver that will receive intents when a fence is triggered.
mFenceReceiver = new FenceReceiver();
registerReceiver(mFenceReceiver, new IntentFilter(FENCE_RECEIVER_ACTION));
createFence(DetectedActivityFence.IN_VEHICLE, "InVehicleFence");
}
@Override
public void onDestroy() {
try {
unregisterReceiver(mFenceReceiver); //Don't forget to unregister the receiver
} catch (Exception e) {
e.printStackTrace();
}
super.onDestroy();
}
private void createFence(int detectedActivityFence, final String fenceKey) {
AwarenessFence fence = DetectedActivityFence.during(detectedActivityFence);
// Register the fence to receive callbacks.
Awareness.FenceApi.updateFences(
mGoogleApiClient, new FenceUpdateRequest.Builder().addFence(fenceKey, fence, mPendingIntent)
.build()).setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
if (status.isSuccess()) {
Log.i(getClass().getSimpleName(), "Successfully registered.");
} else {
Log.e(getClass().getSimpleName(), "Could not be registered: " + status);
}
}
});
}
// Handle the callback on the Intent.
public class FenceReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
FenceState fenceState = FenceState.extract(intent);
switch (fenceState.getCurrentState()) {
case FenceState.TRUE:
Log.i(fenceState.getFenceKey(), "Active");
break;
case FenceState.FALSE:
Log.i(fenceState.getFenceKey(), "Not Active");
break;
}
}
}
}
This sample is only for detecting driving state, but, you can call 'createFence' with other activity methods such as :
createFence(DetectedActivityFence.TILTING, "TiltingFence");
createFence(DetectedActivityFence.WALKING, "WalkingFence");
createFence(DetectedActivityFence.ON_FOOT, "OnFootFence");
createFence(DetectedActivityFence.RUNNING, "RunningFence");