ActivityDetectionBroadcastReceiver does not compile after updating to GooglePlayServices 26.0.2

This is my onReceive function:

    @Override
public void onReceive(Context context, Intent intent) {
    ArrayList<DetectedActivity> updatedActivities =
            intent.getParcelableArrayListExtra(Constants.ACTIVITY_EXTRA);
    int type = 0x0;
    Integer confidence = 0;
    Collections.sort(updatedActivities, new Comparator<DetectedActivity>() {
        @Override
        public int compare(DetectedActivity lhs, DetectedActivity rhs) {
            if(lhs.getConfidence() > rhs.getConfidence()){
                return -1;
            }else if(lhs.getConfidence() > rhs.getConfidence()){
                return 1;
            }
            return 0;
        }
    });
    String rawData = "(";
    for (DetectedActivity detectedActivity : updatedActivities){
        if(detectedActivity.getConfidence() >= 25){
            if(type==PSMotionService.unknown || type==PSMotionService.stationary) {
                rawData += detectedActivity.getType() + ":" + detectedActivity.getConfidence() + ",";
                Log.i("", "autopilot type detected activity: " + detectedActivity);
                if (confidence < detectedActivity.getConfidence()) {
                    confidence = detectedActivity.getConfidence();
                }
                if (detectedActivity.getType() == DetectedActivity.STILL) {
                    type |= PSMotionService.stationary;
                } else if (detectedActivity.getType() == DetectedActivity.IN_VEHICLE) {
                    type |= PSMotionService.automotive;
                } else if (detectedActivity.getType() == DetectedActivity.ON_BICYCLE) {
                    type |= PSMotionService.bicycling;
                } else if (detectedActivity.getType() == DetectedActivity.ON_FOOT || detectedActivity.getType() == DetectedActivity.WALKING) {
                    type |= PSMotionService.walking;
                } else if (detectedActivity.getType() == DetectedActivity.RUNNING) {
                    type |= PSMotionService.running;
                } else if (detectedActivity.getType() == DetectedActivity.UNKNOWN) {
                    type |= PSMotionService.unknown;
                }
            }
        }
    }
    rawData += ")";
    Long timestamp = System.currentTimeMillis()/1000;
    Integer confidenceFlag = 0;
    if(confidence >= 25 && confidence < 75){
        confidenceFlag = 1;
    }else if(confidence >=75){
        confidenceFlag = 2;
    }
    Log.i("", "autopilot type is:" + type + "... timestamp: " + timestamp + "....confidence" + confidence + "...confidenceFlag:" + confidenceFlag);
    Log.i("", "autopilot-----------------------------------------------END");
    Motion activity = new Motion(timestamp, type, confidenceFlag);
    Utils.appendLog("NEW MOTION: [" + activity.getTimestamp() + ", " + activity.getType() + ", " + activity.getConfidence() + "]" + rawData, "D", Constants.TRACKER);
    if(PSTrip.getActiveTrip() != null){
        PSMotionService.getInstance(context).motionsTrip.add(activity);
        Log.i("", "autopilot added to trip: size is:" + PSMotionService.getInstance(context).motionsTrip.size());
        if(PSApplicationClass.getInstance().pref.getGeoEnabled(context)) {
            appendMotionActivity(context, type, activity);
        }
    }else{
        Log.i("", "autopilot test to add to buffer");
        appendMotionActivity(context, type, activity);
    }
    Log.i("", "autopilot-----------------------------------------------END AAAAALLLLLLL");
}

And I would extract the DetectedActivity List from the intent like this:

        ArrayList<DetectedActivity> updatedActivities =
            intent.getParcelableArrayListExtra(Constants.ACTIVITY_EXTRA);

But now I get this issue:

/Users/alinrosu/Workspace/passenger-android/passenger/src/main/java/nl/hgrams/passenger/listeners/ActivityDetectionBroadcastReceiver.java
Error:(31, 51) error: incompatible types: inferred type does not conform to upper bound(s)
inferred: DetectedActivity
upper bound(s): Parcelable
Error:Execution failed for task ':passenger:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

How can I extract the DetectedActivity list, without getting this issue?

The problem is that you are using the language level settings for Java 8, and this tightens some restrictions on automatic casting that were OK in Java 7 and lower. See Why does this Java 8 program not compile? for some more details.

I don't have something to test this with, so I can't say for sure if this will work, but you could first try to cast it:

ArrayList<DetectedActivity> updatedActivities = 
    (ArrayList<DetectedActivity>)intent.getParcelableArrayListExtra(Constants.ACTIVITY_EXTRA);

If that doesn't work, do it this way:

ArrayList<Parcelable> updatedActivities = intent.getParcelableArrayListExtra(Constants.ACTIVITY_EXTRA);

Now, when you use the array, you'll need to cast each element, like this:

for (Parcelable p : updatedActivities) {
    // cast to correct type
    DetectedActivity detectedActivity = (DetectedActivity)p;
    // do whatever with "detectedActivity"...
}