registerObserve method

void registerObserve([
  1. ValueChanged<MethodCall>? callback
])

Register observe callback with assets changes. 注册资源（图库）变化的监听回调

Implementation

void registerObserve([ValueChanged<MethodCall>? callback]) {
  if (callback == null) {
    return;
  }
  try {
    PhotoManager.addChangeCallback(callback);
    PhotoManager.startChangeNotify();
  } catch (e) {
    realDebugPrint('Error when registering assets callback: $e');
  }
}