Android 检测车辆是否移动

Question

我正在开发一个类似于优步的应用程序，如果车辆停止移动（或移动），我们需要计算等待时间

我尝试使用 GPS 定位速度，但它似乎没有帮助。然后我们尝试 Activity 识别 API 也没有立即更新。

我们还有其他方法可以实现吗？。请注意，这与检测速度无关。它是关于检测车辆是否在移动。

谢谢，阿尼夫

Answer 1

据我所知，您有 3 个选择：

您可以实现自己的驾驶检测技术 - 使用 Activity recognition and receiving location updates，尽管 我建议不要这样做 ，不要重新发明轮子，有很好的api已经开发了。
您可以使用 Neura 的免费 SDK，它可以在您的用户开始驾驶和结束驾驶时向您发送事件。看看这个 git project ：基本上，当您开始驾驶时，该项目会宣布带有文本到语音的通知，这不是您想要的，但是当 Neura 向您发送事件 start/finish 开车。很容易接受这个项目并把它变成你自己的。 我强烈推荐使用这个选项。

您可以使用 google 的 FenceApi 来声明驾驶围栏。

虽然这个方法看起来不错，但我遇到了这样一个事实，这个api有时在用户starts/finishes开车时没有告诉我，有时我开始后花了很长时间开车 api 告诉我那件事。

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:+'

b。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 : 您需要生成一个密钥 here.

c。您的 MainActivity class - 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(), "Driving");
                    break;
                case FenceState.FALSE:
                    Log.i(fenceState.getFenceKey(), "Not driving");
                    break;
            }
        }
    }
}

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