地质事件并不总是被称为

Question

这就是我如何添加我的地理位置：

public void setGeofenceRequest(Location location) {
    if (geofences == null) {
        geofences = new ArrayList<Geofence>();
    }
    geofences.add(new Geofence.Builder()
            .setRequestId("3")
            .setTransitionTypes(Geofence.GEOFENCE_TRANSITION_EXIT)
            .setCircularRegion(
                    location.getLatitude(), location.getLongitude(), PSLocationService.getInstance(context).kPSGeofencingDistanceMedium)
            .setExpirationDuration(Geofence.NEVER_EXPIRE)
            .build());
    Intent intent = new Intent(context, ReceiveTransitionsBroadcastReceiver.class);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    if (geofences.size() > 0) {
        LocationServices.GeofencingApi.addGeofences(mLocationClient, geofences, pi);
        Log.i("", "geof autopilot2 will set geofence for autopilot-3");
    }
}

这是我的BroadcastReceiver。我应该在那里接收它们：

public class ReceiveTransitionsBroadcastReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context ctx, Intent intent) {
    Log.i("","autopilot valid geof on receive transisionts broadcast receiver");
    PSMotionService.getInstance(ctx).buildGoogleApiClient();
    GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
    int transitionType = geofencingEvent.getGeofenceTransition();
    Location geofenceCenter = PSApplicationClass.getInstance().pref.getGeoCenter(ctx);
    if(geofencingEvent.getTriggeringLocation() != null) {
        if (geofenceCenter != null) {
            Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver TRIGGERING LOCATION: " + geofencingEvent.getTriggeringLocation().toString() + " / GEOFENCE CENTER: " + geofenceCenter.getLatitude() + ", " + geofenceCenter.getLongitude(), "D", Constants.TRACKER);
        } else
            Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver TRIGGERING LOCATION: " + geofencingEvent.getTriggeringLocation().toString(), "D", Constants.TRACKER);
    }else Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver ERROR => TRIGGERING LOCATION NULL", "D", Constants.TRACKER);
    if(transitionType == Geofence.GEOFENCE_TRANSITION_EXIT) {
        List<Geofence> triggerList = geofencingEvent.getTriggeringGeofences();
        for (Geofence geofence : triggerList) {
            Log.i("", "geof is s receive transition broadcast receiver " + transitionType + " GPS zone " + geofence.getRequestId());
            if(geofence.getRequestId().contentEquals("3")) {
                Log.i("", "geof autopilot2 ENTERED GEOFENCE will start pilot with first location");
                Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver check to see if should start pilot", "T", Constants.TRACKER);
                PSLocationService.getInstance(ctx).fastGPS = -1;
                PSLocationService.getInstance(ctx).RequestLocationUpdates();
                if(PSTrip.getActiveTrip() != null) {
                    PSLocationService.getInstance(ctx).removeAutoPilotGeofence();
                }else PSMotionService.getInstance(ctx).checkinTime = System.currentTimeMillis() / 1000;
            }
        }
    }
}
}

现在它通常起作用，但并不总是起作用。我想说的是，只有大约75%的时间它应该工作，地理事件实际上被称为。我觉得我设置地理位置的时间越长，它被调用的可能性就越小。为什么会发生这种情况？当应用程序被垃圾收集器清理时，触发事件是否也被排除了？当发生这种情况时，我怎么做才能使我的地理位置总是被调用呢？

编辑：

这是我的defaultConfig：

 defaultConfig {
    minSdkVersion 15
    targetSdkVersion 23

    ndk {
        moduleName "ndkVidyoSample"
    }
}

我从广播接收器变成了IntentService：

public class PSGeofenceTransitionsIntentService extends IntentService {
private static ActivityManager manager;
private static PSGeofenceTransitionsIntentService instance;
private GeofencingClient mGeofencingClient;
Context context;
private PendingIntent mGeofencePendingIntent;
public static boolean isMyServiceRunning(Class<?> serviceClass) {
    for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
        if (serviceClass.getName().equals(service.service.getClassName())) {
            return true;
        }
    }
    return false;
}
public static PSGeofenceTransitionsIntentService getInstance(Context context) {
    if (instance == null) {
        // Create the instance
        instance = new PSGeofenceTransitionsIntentService(context);
    }
    if (!isMyServiceRunning(PSGeofenceTransitionsIntentService.class)) {
        Intent bindIntent = new Intent(context, PSGeofenceTransitionsIntentService.class);
        context.startService(bindIntent);
    }
    // Return the instance
    return instance;
}
public PSGeofenceTransitionsIntentService() {
    super("GeofenceTransitionsIntentService");
}
public PSGeofenceTransitionsIntentService(Context context) {
    super("GeofenceTransitionsIntentService");
    mGeofencingClient = LocationServices.getGeofencingClient(context);
    manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    instance = this;
    this.context = context;
}
protected void onHandleIntent(Intent intent) {
    Log.i("", "autopilot valid geof on receive transisionts broadcast receiver");
    PSMotionService.getInstance(context).buildGoogleApiClient();
    GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
    int transitionType = geofencingEvent.getGeofenceTransition();
    Location geofenceCenter = PSApplicationClass.getInstance().pref.getGeoCenter(context);
    if (geofencingEvent.getTriggeringLocation() != null) {
        if (geofenceCenter != null) {
            Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver TRIGGERING LOCATION: " + geofencingEvent.getTriggeringLocation().toString() + " / GEOFENCE CENTER: " + geofenceCenter.getLatitude() + ", " + geofenceCenter.getLongitude(), "D", Constants.TRACKER);
        } else
            Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver TRIGGERING LOCATION: " + geofencingEvent.getTriggeringLocation().toString(), "D", Constants.TRACKER);
    } else
        Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver ERROR => TRIGGERING LOCATION NULL", "D", Constants.TRACKER);
    if (transitionType == Geofence.GEOFENCE_TRANSITION_EXIT) {
        List<Geofence> triggerList = geofencingEvent.getTriggeringGeofences();
        for (Geofence geofence : triggerList) {
            Log.i("", "geof is s receive transition broadcast receiver " + transitionType + " GPS zone " + geofence.getRequestId());
            if (geofence.getRequestId().contentEquals("3")) {
                Log.i("", "geof autopilot2 ENTERED GEOFENCE will start pilot with first location");
                Utils.appendLog("GEOFENCE ENTERED ReceiveTransitionsBroadcastReceiver check to see if should start pilot", "T", Constants.TRACKER);
                PSLocationService.getInstance(context).isLocationRequestsOn = -1;
                PSLocationService.getInstance(context).RequestLocationUpdates();
                if (PSTrip.getActiveTrip() != null) {
                    removeAutoPilotGeofence();
                } else
                    PSMotionService.getInstance(context).checkinTime = System.currentTimeMillis() / 1000;
            }
        }
    }
}
public void removeAutoPilotGeofence() {
    try {
        Log.i("", "autopilot remove autopilot geofence");
        List<String> list = new ArrayList<String>();
        list.add("3");
        if(mGeofencingClient == null)
            mGeofencingClient = LocationServices.getGeofencingClient(context);
        mGeofencingClient.removeGeofences(list).addOnSuccessListener(new OnSuccessListener<Void>() {
            @Override
            public void onSuccess(Void aVoid) {
                Utils.appendLog("GEOFENCE removeAutoPilotGeofence Success removing geofences!", "I", Constants.TRACKER);
                Log.i("", "GEOFENCE removeAutoPilotGeofence Success removing geofences!");
                PSApplicationClass.getInstance().pref.setGeoCenterString(context, "-1");
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                Utils.appendLog("GEOFENCE removeAutoPilotGeofence FAILURE removing geofences!" + e.getMessage(), "I", Constants.TRACKER);
                Log.i("", "GEOFENCE removeAutoPilotGeofence FAILURE removing geofences!" + e.getMessage());
            }
        });
        Utils.appendLog("GEOFENCE: Disabling geofence done removeAutoPilotGeofence", "E", Constants.TRACKER);
    } catch (final Exception e) {
        if (e.getMessage().contains("GoogleApiClient") && e.getMessage().contains("not connected")) {
            PSLocationService.getInstance(context).startLocationClient();
            Handler han = new Handler();
            han.postDelayed(new Runnable() {
                @Override
                public void run() {
                    Utils.appendLog("autopilot2 error will try again", "E", Constants.TRACKER);
                    removeAutoPilotGeofence();
                }
            }, 1000);
        }
        Log.i("", "autopilot2 error replaceFragment autopilot geofence:" + e.getMessage());
        Utils.appendLog("autopilot2 error replaceFragment autopilot geofence:" + e.getMessage(), "E", Constants.TRACKER);
    }
}
public void setGeofenceRequest(final Location location) {
    ArrayList geofences = new ArrayList<>();
    geofences.add(new Geofence.Builder()
            .setRequestId("3")
            .setTransitionTypes(Geofence.GEOFENCE_TRANSITION_EXIT)
            .setCircularRegion(
                    location.getLatitude(), location.getLongitude(), PSLocationService.kPSGeofencingDistanceMedium)
            .setExpirationDuration(Geofence.NEVER_EXPIRE)
            .build());
    //ADDING GEOFENCES
    if (geofences.size() > 0) {
        if(mGeofencingClient == null)
            mGeofencingClient = LocationServices.getGeofencingClient(context);
        mGeofencingClient.addGeofences(getGeofencingRequest(location, geofences), getGeofencePendingIntent()).addOnSuccessListener(new OnSuccessListener<Void>() {
            @Override
            public void onSuccess(Void aVoid) {
                RealmLocation realmLocation = new RealmLocation(location.getLatitude(), location.getLongitude(), location.getTime() / 1000, null, true);
                realmLocation.setAccuracy(location.getAccuracy());
                realmLocation.setSpeed(location.getSpeed());
                PSApplicationClass.getInstance().pref.setGeoCenter(realmLocation, context);
                Utils.appendLog("GEOFENCE setGeofenceRequest Success adding geofences!" + location.getLatitude() + " / " + location.getLongitude(), "I", Constants.TRACKER);
                Log.i("", "GEOFENCE setGeofenceRequest Success adding geofences! " + location.getLatitude() + " / " + location.getLongitude());
                PSLocationService.getInstance(context).stopLocationClient();
                PSMotionService.getInstance(context).buildGoogleApiClient();
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                Utils.appendLog("GEOFENCE setGeofenceRequest FAILURE adding geofences!" + e.getMessage(), "I", Constants.TRACKER);
                Log.i("", "GEOFENCE setGeofenceRequest FAILURE adding geofences!" + e.getMessage());
            }
        });
        Log.i("", "geof autopilot2 will set geofence for autopilot-3");
    }
}
/**
 * Gets a PendingIntent to send with the request to add or remove Geofences. Location Services
 * issues the Intent inside this PendingIntent whenever a geofence transition occurs for the
 * current list of geofences.
 *
 * @return A PendingIntent for the IntentService that handles geofence transitions.
 */
private PendingIntent getGeofencePendingIntent() {
    // Reuse the PendingIntent if we already have it.
    if (mGeofencePendingIntent != null) {
        return mGeofencePendingIntent;
    }
    Intent intent = new Intent(context, PSGeofenceTransitionsIntentService.class);
    // We use FLAG_UPDATE_CURRENT so that we get the same pending intent back when calling
    // addGeofences() and removeGeofences().
    return PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
/**
 * Builds and returns a GeofencingRequest. Specifies the list of geofences to be monitored.
 * Also specifies how the geofence notifications are initially triggered.
 */
private GeofencingRequest getGeofencingRequest(Location location, ArrayList<Geofence> geofences) {
    GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
    // The INITIAL_TRIGGER_ENTER flag indicates that geofencing service should trigger a
    // GEOFENCE_TRANSITION_ENTER notification when the geofence is added and if the device
    // is already inside that geofence.
    builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_EXIT);
    // Add the geofences to be monitored by geofencing service.
    builder.addGeofences(geofences);
    // Return a GeofencingRequest.
    return builder.build();
}

}

我在其中还包含了删除和添加geofence的代码，监听器总是在onSuccess中添加它们。

Answer 1

首先，我不会将这段代码放入BroadcastReceiver中。

除了不好的实践之外，该组件可能在代码完成执行之前被关闭。

如果您需要运行可能需要一些时间的代码，请考虑从您的接收器启动服务。否则，在很短的执行时间内，您可以使用IntentService。

通过查看您的代码，我了解到您的地理位置没有按预期工作的两个原因：

1)地学的性质

Geofences主要从WiFi / Cellular检索您的位置，这些数据通常不可用。

我试过一次使用Geofence，但我发现它们非常不准确。我转到LocationManager，使它使用纯GPS定位，它满足了我的期望。

请参阅这个答案，它建议

每隔一段时间轮询GPS硬件，而不对结果做任何事情，您将开始获得更精确的地理位置。

我从来没有尝试过谷歌的FusedLocation API，但我听到人们说它对他们非常有效。

如果您使用LocationManager，您将不得不自己实现“地理映射逻辑”；您可以很容易地使用Location.distanceTo(地点)来实现它。

示例：

final float distanceFromCenter = currentLocation.distanceTo(this.destination);

if (distanceFromCenter <= YOUR_RADIUS_IN_METERS) {
   // you are inside your geofence
} 

2) CPU不是活动的

地理位置处于活动状态，并不一定意味着您的手机处于清醒状态并进行计算位置检查。

要解决这个问题，您可以从您的ForegroundService启动BroacastReceiver。该服务还应该拥有一个部分WakeLock。这保证：

1. 操作系统不会杀死服务(或者更好:被杀死的可能性更小.)
2. 用户知道该服务，并可以在必要时拒绝它。
3. CPU正在运行。因此，您可以确保检索位置的代码正在运行(请记住在服务停止时释放WakeLock )。

请注意，如果需要的话，Android可能仍然会扼杀您的服务。

您可以在网上找到很多关于如何从ForegroundService启动BroadcastReceiver、如何保存WakeLock等等的示例.

另外，查看一下新的Android，它给ForegroundService和其他组件带来了一些小的变化。

PS:我开发和应用程序使用了上面提到的所有组件(除了FusedLocation)，我非常满意。

编辑:回答OP的问题

好吧，让我们试着在这里下点订单，否则未来的读者可能会很容易被搞糊涂。我将首先回答原始问题和“赏金横幅”中写的内容，然后对OP进行编辑，最后回答OP在评论中提出的问题。

1)原问题

当应用程序被垃圾收集器清理时，触发事件是否也被排除了？

很可能是的。参见这个答案，OP实现了一个在单独进程中运行的服务，以便即使在应用程序被杀死时也会触发geofence。

如果有足够的时间，我需要弄清楚是什么原因导致地勤人员不被打电话的。

有很多理由。看看我最初的答案。

我看到了用服务而不是广播接收器实现geofence逻辑，这会更好吗？

接收者和服务是两种不同的东西。请阅读Android的文档。您可以从BroadcastReceiver启动服务，这通常是“接收”PendingIntents并对其执行某些操作的首选方式。

2)编辑

• 请注意，我没有告诉您用服务替换BroadcastReceiver，但是从接收方启动服务并处理所有逻辑可能是个好主意。
• 使您的IntentService成为单例类不是必要的，因为(来自IntentService文档)

所有请求都是在一个工作线程上处理的--它们可能需要尽可能长的时间(并且不会阻塞应用程序的主循环)，但是一次只处理一个请求。

• 不要将上下文存储到Singleton类或某些静态引用中。安卓工作室没有警告你，这让我印象深刻。

3)评论

我需要这个工作24/7，因此我不能一直使用位置，因为明显的电池问题。

请阅读Android Oreo后台执行限制。这对你来说可能是个问题。

另外，现在我换了一个intentService，这足以确保它保持清醒吗？

不，正如我所说，您可能需要一个部分WakeLock才能打开CPU。

我是否需要以另一种方式启动它，以保持它的前景？

是。为了启动前台服务，需要调用startForeground(int，通知)

请注意: IntentServices生存期仅限于onHandleIntent()函数的末尾。通常情况下，它们的寿命不应该超过几秒钟。如果要启动前台，请使用Service类。

此外，正如在最初的答案中说的，一个新的前台API是可用的和首选的Android。

不是问题，只是一个通知:我需要在这里使用地理标志。(如果必要的话，全球定位系统将启动地理定位。

好的完美。看看什么最适合你。