Android Geofence 在進入/退出時觸發，沒有錯誤但沒有 GEOFENCE_TRANSITION_ 標志

Question

我正在使用下面的代碼監視地理圍欄轉換

LocationServices.GeofencingApi
    .addGeofences(AssistApplication.getApiHelper().getClient(),
                  getGeofencingRequest(),
                  getPendingIntent(context,  
                              GeofenceTransitionIntentService.class))
    .setResultCallback(this);

這就是我構建 GeofencingRequest 的方式

private GeofencingRequest getGeofencingRequest()
{
    return new GeofencingRequest.Builder()
            .setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER |
                    GeofencingRequest.INITIAL_TRIGGER_EXIT)
            .addGeofence(getGeofence())
            .build();
}

private Geofence getGeofence()
{
    return new Geofence.Builder()
            .setRequestId(requestId)
            .setCircularRegion(latitude, longitude, 100)
            .setExpirationDuration(Geofence.NEVER_EXPIRE)
            .setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER |
                    Geofence.GEOFENCE_TRANSITION_EXIT)
            .build();
}

Geofence 在進入和退出時正確觸發，但是當我使用getGeofenceTransition()時，我沒有獲得三個GEOFENCE_TRANSITION_標志中的任何一個。

protected void onHandleIntent(Intent intent)
{
    final GeofencingEvent event = GeofencingEvent.fromIntent(intent);
    if (event.hasError())
    {
        Log.e(TAG, getErrorMessage(event.getErrorCode()));
        return;
    }

    switch (event.getGeofenceTransition())
    {
        case Geofence.GEOFENCE_TRANSITION_EXIT:
            // Not triggered 
            break;
        case Geofence.GEOFENCE_TRANSITION_ENTER:
        case Geofence.GEOFENCE_TRANSITION_DWELL:
            // Not triggered
            break;
        default:
            // Triggered on exit and enter
    }
}

請告知我在這里缺少什么

Answer 1

從問題中的信息來看，我看不出您的代碼有任何具體問題，但我懷疑您正在處理的Intent不是來自轉換警報？

我個人使用廣播接收器從 Geofence 接收Intent ，並使用IntentFilter對其進行過濾。 我使用的結構如下：-

在您的Activity中聲明廣播接收器

private BroadcastReceiver passedGeofenceReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            int geofenceTransition;

            // get the Geofencing Event
            GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent);
            if (geofencingEvent.hasError()) {
                return;
            }

            // Get the transition type.
            geofenceTransition = geofencingEvent.getGeofenceTransition();

            if ( geofenceTransition == Geofence.GEOFENCE_TRANSITION_ENTER) {
                // etc etc 

在您的Activity onCreate方法中注冊此接收器：-

    // register this Activity as the receiver of Geofence notifications
    IntentFilter filter = new IntentFilter();
    filter.addAction("com.example.HIT_GEOFENCE");
    this.registerReceiver(this.passedGeofenceReceiver, filter);

在創建廣播PendingIntent時，設置過濾器（mGeofencePendingIntent 是一個成員PendingIntent變量）：-

private PendingIntent getGeofencePendingIntent() {
    // Reuse the PendingIntent if we already have it.
    if (mGeofencePendingIntent != null) {
        return mGeofencePendingIntent;
    }

    Intent hitGeofenceIntent = new Intent("com.example.HIT_GEOFENCE"); //- intent to send a broadcast

    mGeofencePendingIntent = PendingIntent.getBroadcast(this, 0, hitGeofenceIntent,  PendingIntent.FLAG_UPDATE_CURRENT);
    return mGeofencePendingIntent;
}

監控您的地理圍欄：-

private void monitorGeofences() {
    if ( <check permissions> ) {
        GeofencingRequest geofencingRequest = getGeofencingRequest();
        PendingIntent pendingIntent = getGeofencePendingIntent();
        LocationServices.GeofencingApi.addGeofences(mGoogleApiClient, geofencingRequest, pendingIntent)
                        .setResultCallback(this); // Result callback fires 'onResult'
    }
}

我希望這有幫助。

Answer 2

我在 Android 12 上使用地理圍欄時遇到了同樣的問題。意圖中沒有轉換 (-1)、沒有觸發位置和沒有觸發地理圍欄。

那是因為我在創建掛起意圖時使用了PendingIntent.FLAG_IMMUTABLE而不是PendingIntent.FLAG_MUTABLE 。

所以在廣播意圖的情況下應該這樣創建：

PendingIntent.getBroadcast(
    context, 0,
    Intent(context, GeofenceBroadcastReceiver::class.java),
    PendingIntent.FLAG_UPDATE_CURRENT or
        (if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) PendingIntent.FLAG_MUTABLE else 0)
)

Answer 3

@Jukurrpa，我遇到了同樣的問題，即 No transition(-1) 或GEOFENCE_TRANSITION_INVALID_TYPE: -1我正確地實現了除了PendingIntent的flags之外的所有內容。 我正在使用：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
    PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
else
    PendingIntent.FLAG_UPDATE_CURRENT

您的回答對我幫助很大，過去 4 天我一直在尋找解決方案。 太感謝了。