PresenterManager.java 文件源码

/**
 * Get the  {@link ActivityScopedCache} for the given Activity or <code>null</code> if no {@link
 * ActivityScopedCache} exists for the given Activity
 *
 * @param activity The activity
 * @return The {@link ActivityScopedCache} or null
 * @see #getOrCreateActivityScopedCache(Activity)
 */
@Nullable @MainThread static ActivityScopedCache getActivityScope(@NonNull Activity activity) {
  if (activity == null) {
    throw new NullPointerException("Activity is null");
  }
  String activityId = activityIdMap.get(activity);
  if (activityId == null) {
    return null;
  }

  return activityScopedCacheMap.get(activityId);
}