setExpirationDuration（NEVER_EXPIRE）和setTransitionTypes（GEOFENCE_TRANSITION_ENTER）给出错误

Question

在我构建地理围栏的方法中，我在ExpirationDuration(NEVER_EXPIRE)和setTransitionTypes(GEOFENCE_TRANSITION_ENTER)上收到错误，指出无法将其解析为变量。为什么会这样？

我的方法：

private void buildGeofence(){
    LatLng geofencePoint = marker.getPosition();
    int radius = 1610;
    Geofence.Builder geofence = new Geofence.Builder();
    geofence.setCircularRegion(geofencePoint.latitude,geofencePoint.longitude, radius);
    geofence.setExpirationDuration(NEVER_EXPIRE);
    geofence.setTransitionTypes(GEOFENCE_TRANSITION_ENTER);
    geofence.setNotificationResponsiveness(0);
    geofence.build();
}

Answer 1

这些常量已在您引用的Geofence类中声明，因此请将它们用作geofence.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER);

Answer 2

是的，所以我忘了宣布常数。咄！这是我使用的声明：

long NEVER_EXPIRE = -1;
int GEOFENCE_TRANSITION_ENTER = 1;

有关此事的更多信息：https://developer.android.com/reference/com/google/android/gms/location/Geofence.html