如何使用翻新或凌空删除回收者视图项目？

Question

I want to delete the recyclerview item using retrofit or volley network library. Please post the code or example?

Answer 1

Firstable you do not have to remove the items on the RecyclerView. The main idea is provide the List of item, set it in the Adapter and load again the RecyclerView on the UI. If you have a RestCall using Retrofit all you have to do is:

Create an Update method and call it every time you need to show the changes on the UI. This method will do the RetrofitCall and it will give the List of items you need to pass to the adapter using a custom listener with the return onSuccess.

private RecyclerAdapter updateRecycler() {
    getItemsFromApi(new RestApiListener() {
        @Override
        public void onSuccess(List<Items> items) {
            recyclerAdapter = new RecyclerAdapter(this, items);
            recyclerView.setAdapter(recyclerAdapter);
        }

        @Override
        public void onError(String message) {
            showError(message);
        }
    });
}

Here is how to do the CallBack in Retrofit with the listener

public Callback<Items> getItemsFromApi(final RestApiListener listener) {
    return new Callback<Items>() {
        @Override
        public void onResponse(Call<Items> call, Response<Items> response) {
            switch (response.code()) {
                case 200:
                    listener.onSuccess(response.body().getItems());
                    break;
                default:
                    listener.onError("Error " + response.message());
                    break;
            }
        }

        @Override
        public void onFailure(Call<Items> call, Throwable t) {
            listener.onError(t.getMessage().toString());
        }
    };
}

public interface RestApiListener  {
    void onSuccess(List<Items> items);

    void onError(String s);
}

Also here is an example code .