使用Android檢測用戶活動（跑步，騎車，駕駛）

Question

使用我的Android設備如何檢測用戶是否正在步行，騎車或駕車？ 我檢查了Google Fit app.它區分跑步，騎車和駕駛。我很困惑我應該用什麼算法來區分這些活動。我知道我將不得不使用加速計傳感器。但我仍然無法區分這些活動。

Answer 1

您可以爲此使用GooglePlayServices。

它爲ActivityRecognition提供了特殊的API，它爲每個用戶返回了用戶活動的置信度。

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

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

Answer 2

您可以使用DetectActivity來區分預定義的活動類型。

Answer 3

這個問題是很老，但因爲有新的技術都在那裏，我認爲這是值得一提的是，如果有人仍然遇到此問題。

我能想出3個選項：

1. 您可以實現自己的檢測步行，駕車，騎車技巧 - 用Activity recognition和receiving location updates，雖然我建議不要這樣做，不重新發明輪子，已經有很好的發展，現在是2016年。

2. 您可以使用免費的sdk Neura，當您的用戶開始/完成駕駛，開始/結束步行，開始/結束運行，read more of the events you can get from Neura時，它可以向您發送活動。

   檢查了這個git project：基本上，該項目有Nuera可以檢測到的所有事件。只需參加這個項目並使其成爲您自己的項目非常簡單。

   我強烈推薦使用這個Neura sdk選項。

3. 您可以使用谷歌的FenceApi爲了宣佈柵欄。例如，這是用於檢測駕駛圍欄的代碼。

   儘管這種方法看起來不錯，但我已經面對這樣一個事實，即當事件發生時，這個api並沒有告訴我，有時候我開始走路/跑步時花了很長時間，當api告訴我那個事件。

   a。包括依賴於你的應用程序的文件的build.gradle：

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

   灣清單定義：

   <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：你需要生成一個密鑰here。

   c。你MainActivity類別 - 解釋連接到代碼：

   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; 
         } 
        } 
       } 
   } 
   

   此示例是僅用於檢測行駛狀態，但是，你可以叫「createFence」與其他活性的方法，如：

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