RecyclerView：未连接适配器；使用翻新跳过布局

Question

我尝试使用改造和recyclerview从API获取数据

但是跑步说

E / RecyclerView：未连接适配器；跳过布局

MainActivity.class

public class MainActivity extends AppCompatActivity {
private MovieAdapter adapter;
private RecyclerView recyclerView;

private String API_KEY = ApiClient.getApiKey();
private String CATEGORY = "now_playing";
private String LANGUAGE = "en-US";
private List<Movie> movie =  new ArrayList<>();

ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    progressDialog = new ProgressDialog(MainActivity.this);
    progressDialog.setMessage("Loading .... ");
    progressDialog.show();

    recyclerView = findViewById(R.id.recyclerview);
    recyclerView.setHasFixedSize(true);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));

    GetMovie service = ApiClient.getRetrofitInstance().create(GetMovie.class);
    Call<List<Movie>> call = service.getMovie(CATEGORY,API_KEY,LANGUAGE);
    call.enqueue(new Callback<List<Movie>>() {
        @Override
        public void onResponse(Call<List<Movie>> call, Response<List<Movie>> response) {
            progressDialog.dismiss();
            movie = response.body();
            adapter = new MovieAdapter(movie,getApplicationContext());
            adapter.notifyDataSetChanged();
            recyclerView.setAdapter(adapter);
        }

        @Override
        public void onFailure(Call<List<Movie>> call, Throwable t) {
            progressDialog.dismiss();
            Toast.makeText(MainActivity.this,"Failed",Toast.LENGTH_LONG).show();
        }
    });

}

}我尝试了很多方法但还是一样谢谢！

Answer 1

You have to set adapter first and then notify it.

执行此操作

recyclerView.setAdapter(adapter);
adapter.notifyDataSetChanged();

而不是-：

adapter.notifyDataSetChanged();
recyclerView.setAdapter(adapter);

Answer 2

在设置适配器之前将其删除

adapter.notifyDataSetChanged();