Question

我正在开发类似优步的应用程序，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。然后我们尝试了活动识别API，它也没有立即更新。

还有其他方法可以实现这个目标吗？请注意它不是关于检测速度。它是关于检测车辆是否在移动。

谢谢， Aneef

Answer 1

据我所知，你有3个选择：

您可以使用Activity recognition和receiving location updates实施自己的驾驶技术 - 虽然我建议不要这样做，不要重新发明轮子，有良好的apis已经发展。
您可以使用Neura的免费sdk，可以在您的用户开始驾驶并完成驾驶时向您发送活动。看看这个git project：基本上，当你开始驾驶时，项目会发布带有文字转语音的通知，这不是你想要的，但是你可以做任何你想要的事情，当Neura向你发送一个事件开始/完成驾驶。很容易就可以把这个项目变成你自己的项目。 我强烈建议您使用此选项。

您可以使用谷歌的FenceApi来宣布一个驾驶围栏。

虽然这种方法似乎很好，但我面对这样一个事实：这个api有时在用户开始/结束驾驶时没有告诉我，有时我开始驾驶后需要很长时间，api告诉我这个事件

一个。包括对应用程序的build.gradle文件的依赖：

   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(), "Driving");
                    break;
                case FenceState.FALSE:
                    Log.i(fenceState.getFenceKey(), "Not driving");
                    break;
            }
        }
    }
}

Android检测车辆是否移动

1 个答案: