android - 使用 Android 检测用户 Activity (运行、骑自行车、驾驶)

Question

如何使用我的 Android 设备检测用户是在步行、骑自行车还是在开车？我检查了 Google Fit app.它区分运行、骑自行车和驾驶。我对应该使用什么算法来区分这些 Activity 感到困惑。

我知道我必须使用加速计传感器。但我仍然无法区分这些 Activity 。

Answer 1

这个问题已经很老了，但由于那里有新技术，我认为值得一提，如果有人仍然遇到这个问题。

我可以想出 3 个选项:

1. 您可以实现自己的技术来检测步行、驾驶、骑自行车 - 使用 Activity recognition和 receiving location updates ，虽然我建议不要这样做，但不要重新发明轮子，已经开发了很好的 api，现在是 2016 年了。

2. 您可以使用免费的 sdk Neura它可以在您的用户开始/结束驾驶、开始/结束步行、开始/结束运行时向您发送事件，read more of the events you can get from Neura .

   看看这个 git project : 基本上，该项目具有 Nuera 可以检测到的所有事件。很容易将这个项目变成你自己的。

   我强烈推荐使用这个 Neura sdk 选项。

3. 您可以使用谷歌的 FenceApi为了宣布围栏。例如，这是一个用于检测驾驶围栏的代码。

   虽然这种方法看起来不错，但我遇到了这样一个事实，即这个 api 有时没有告诉我事件发生的时间，有时在我开始走路/运行后 api 告诉我这件事时花了很长时间事件。

   一个。包括对您应用的 build.gradle 文件的依赖:

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

   list 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 :您需要生成一个 key 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，您可以使用其他 Activity 方法调用“createFence”，例如:

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