Flutter Riverpod：如何在第一次执行失败后触发 FutureProvider？

Question

有没有办法在第一次尝试失败时重试 FutureProvider？

提供商：

final _dataProvider = FutureProvider((ref) => ref.watch(productRepositoryProvider).fetchProducts());

消费者：

return watch(_dataProvider).when(
  data: (value) {
    return Text('Ok');
  },
  loading: () => const CircularProgressIndicator(),
  error: (error, stackTrace) {    
    return FlatButton(
      child: Text('Retry'),
      onPressed: () {
        // What should I add here to retry this FutureProvider?
      },
    );
  },
);

Answer 1

我认为最适合您尝试做的事情的方法是这样的：

StreamProvider 和 Autodispose

final productRepositoryProvider =
    Provider<IProductRepository>((ref) => ProductRepository());

final allProductProvider =
    StreamProvider.autoDispose<List<ProductModel>>((ref) {
  final _productRepository = ref.watch(productRepositoryProvider);
  return _productRepository.allProductsStream;
});

Answer 2

你可以试试

onPressed: () {
        context.refresh(_dataProvider);
      },

Flutter Riverpod：如何在第一次执行失败后触发 FutureProvider？

Flutter Riverpod: How to trigger FutureProvider after first execution fail?

flutter

riverpod