Question

使用我的Android设备如何检测用户是走路，骑自行车还是开车？我检查过Google Fit app.它区分跑步，骑车和驾驶。我很困惑我应该用什么算法来区分这些活动。

我知道我必须使用加速计传感器。但我仍然无法区分这些活动。

Answer 1

这个问题很老了，但是由于有新技术，我认为值得一提，如果有人还在遇到这个问题。

我可以提出3个选项：

你可以使用Activity recognition和receiving location updates来实现自己的行走，驾驶，骑行技术，但我建议不要这样做，不要重新发明轮子，已经有了很好的发展，现在是2016年。
您可以使用Neura的免费sdk，可以在您的用户开始/完成驾驶，开始/结束步行，开始/结束运行read more of the events you can get from Neura时向您发送一个事件。

查看此git project：基本上，该项目包含Nuera可以检测到的所有事件。很容易就把这个项目变成你自己的项目。

我强烈推荐使用此Neura sdk选项。

您可以使用Google FenceApi来声明围栏。例如，这是用于检测驾驶围栏的代码。

虽然这种做法看起来不错，但是我已经面对这样一个事实：这个api在事件发生的时候并没有告诉我，有时候我开始走路/跑步时需要很长时间告诉我那件事。

一个。包括依赖于你的app的build.gradle文件：

   compile 'com.google.android.gms:play-services-location:+'

   compile 'com.google.android.gms:play-services-contextmanager:+'

湾清单定义：

<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：您需要生成密钥here。

℃。您的MainActivity类 - 代码附带的解释：

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;
            }
        }
    }
}

此示例仅用于检测驾驶状态，但是，您可以拨打＆＃39; createFence＆＃39;与其他活动方法，如：

createFence(DetectedActivityFence.TILTING, "TiltingFence");
createFence(DetectedActivityFence.WALKING, "WalkingFence");
createFence(DetectedActivityFence.ON_FOOT, "OnFootFence");
createFence(DetectedActivityFence.RUNNING, "RunningFence");

Answer 2

您可以使用GooglePlayServices进行此操作。

它为ActivityRecognition提供特殊的api，它为每个活动返回具有置信度的用户活动。

https://developer.android.com/reference/com/google/android/gms/location/ActivityRecognitionClient.html

http://developer.android.com/training/location/activity-recognition.html

Answer 3

您可以使用DetectActivity来区分预定义的活动类型。

Answer 4

看看Google Location and Activity Recognition API。我认为这正是你所寻找的。

使用Android检测用户活动（跑步，骑车，驾驶）

4 个答案: