Question

我遇到Android Fused Location API问题。我有一个IntentListener服务，我需要定期接收位置。我成功创建并连接了GoogleApiClient，然后我通过PendingIntent请求接收位置更新，但每次调用GeofencingEvent.getTriggeringLocation时，返回值始终为null。

以下是代码：

private void createLocationRequest() {
    mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(INTERVAL);
    mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}

private void startLocationListener(Context context) {
    if (!isGooglePlayServicesAvailable(context)) {
        Log.d(TAG, "No Google Play Services.");
        return;
    }

    createLocationRequest();
    mGoogleApiClient = new GoogleApiClient.Builder(context)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();

    mGoogleApiClient.connect();
    }

private void startLocationUpdates(Context context) {
    Intent i = new Intent(context, IntentListener.class);
    PendingIntent pi = PendingIntent.getService(context, 0, i, PendingIntent.FLAG_UPDATE_CURRENT);

    com.google.android.gms.common.api.PendingResult<Status> pendingResult = LocationServices.FusedLocationApi.requestLocationUpdates(
            mGoogleApiClient, mLocationRequest, pi);
    Log.d(TAG, "Location update started ..............: ");
}

@Override
protected void onHandleIntent(Intent intent) {
    Log.d(TAG, "INTEEENT");
    String action = intent.getAction();

    if(Actions.ACTION_START_INTENT_LISTENER.equals(action)) {
        init(this);
    }
    else {
        GeofencingEvent event = GeofencingEvent.fromIntent(intent);
        if(event == null) Log.d(TAG, "Null event");
        if(event.getTriggeringLocation() == null) Log.d(TAG, "null location"); // **<-- PROBLEM HERE**
        if (event == null || event.getTriggeringLocation() == null) {
            return;
        }

        Location location = event.getTriggeringLocation();
        Log.d(TAG, "LocationC: " + location.getLatitude() + ", " + location.getLongitude());
    }
}

这是清单

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.srn.app.MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <service android:enabled="true" android:name="com.srn.app.IntentListener"></service>
</application>

<meta-data
    android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />

我在安装了Android 5.1的x86模拟器中运行该应用程序。

知道可能是什么问题吗？

感谢。

Answer 1

Geofencing API必须通过GeofencingApi.addGeofences()专门注册。假设您确实希望从正在进行的requestLocationUpdates()来电中收到位置信息，则应使用LocationResult.extractResult()代替GeofencingEvent.fromIntent()。

旧版Google Play服务的另一种选择是使用密钥KEY_LOCATION_CHANGED从意图中提取一个位置：

Location location = intent.getParcelableExtra(
    LocationServices.FusedLocationProviderApi.KEY_LOCATION_CHANGED);

getTriggeringLocation始终返回null

1 个答案: