Question

我尝试使用翻新和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！

谢谢您的回答，已经解决了。

Answer 1

在设置适配器之前将其删除

adapter.notifyDataSetChanged();

Answer 2

import org.openqa.selenium.remote.RemoteWebDriver;
import java.util.logging.Level;

执行此操作

You have to set adapter first and then notify it.

代替-：

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

Answer 3

尝试这样

private List<Movie> movie; // better initialize it inside onCreate.
//...

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

movie = new ArrayList<>(); // here you should initialize movie.

// here initialize your adapter with empty movie List.
adapter = new MovieAdapter(movie,this);

// set adapter to your recyclerview
recyclerView.setAdapter(adapter);

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();
        if(response.body() != null){
            movie.clear();
            movie.addAll(response.body());
            adapter.notifyDataSetChanged(); // now notify your adapter that data set has changed
        }
    }
    @Override
    public void onFailure(Call<List<Movie>> call, Throwable t) {
        progressDialog.dismiss();
        Toast.makeText(MainActivity.this,"Failed",Toast.LENGTH_LONG).show();
    }
});

Answer 4

请添加此行

recyclerView.setLayoutManager(new LinearLayoutManager(this));

在设置适配器后，如果它不能正常工作，则还要检查您的xml文件。

RecyclerView：未连接适配器；使用改造跳过布局

4 个答案: