Android Java中的回收视图

Question

Recycler View不会迭代到数组的长度。这是代码，我缺少什么。我遵循了描述整个过程的指南，该指南在列表视图中可见数组的所有项目。这是承载recyclerView的主要活动文件，该文件位于适配器java类的下面，该适配器java类过滤整个数组并弹出View视图。请帮我PickupActivity.javapackage com.demo.driverconsole;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.RecyclerViewAccessibilityDelegate;import android.util.Log;import android.widget.Adapter;import android.widget.Toast;import java.util.ArrayList;public class pickupActivity extends AppCompatActivity {    private static final String TAG = "pickupActivity";    private RecyclerView studentList;    private  RecyclerView.Adapter adapter;    private RecyclerView.LayoutManager layoutManager;    private ArrayList<String> myDataset = new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_pickup);        myDataset.add("John Doe");        myDataset.add("Jane Doe");        myDataset.add("Susan");        initRecycler();    }    public void initRecycler() {        Log.d(TAG, "Called");        RecyclerView recyclerView = findViewById(R.id.recyclerView);        StudentListAdapter adapter = new StudentListAdapter(myDataset);        recyclerView.setAdapter(adapter);        recyclerView.setLayoutManager(new LinearLayoutManager(this));    }}

Answer 1

⬇删除此代码⬇

public class StudentListAdapter extends RecyclerView.Adapter<StudentListAdapter.ViewHolder>

{

    // ....

}

⬇使用此代码⬇

public class StudentListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>

    {

        // ....

    }

因为您扩展了：-公共类StudentListAdapter

extends RecyclerView.Adapter<StudentListAdapter.ViewHolder>

并且在这里扩展：-公共类ViewHolder extends RecyclerView.ViewHolder