Question

我的适配器似乎没有将我的数组作为参数..

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {

List<Character> characters;

public MyAdapter(List<Character> list) {
    this.characters = list;
}



@Override
public int getItemCount() {
    return characters.size();
}

@Override

    public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int itemType) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_cell,viewGroup,false);
        return new MyViewHolder(view);
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    Character character = characters.get(position);
    holder.display(character);
}

public class MyViewHolder extends RecyclerView.ViewHolder {

    private final TextView name;
    private final TextView secondname;
    private final TextView numero;


    public MyViewHolder(final View itemView) {
        super(itemView);

        name = ((TextView) itemView.findViewById(R.id.name));
        secondname = ((TextView) itemView.findViewById(R.id.secondname));
        numero = ((TextView) itemView.findViewById(R.id.numero));

        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

            }
        });
    }

    public void display(Character character) {

        name.setText(character.getNom());
        secondname.setText(character.getPrenom());
        numero.setText(character.getNumero());

    }
}

}

和我的MainActivity：

public class MainActivity extends AppCompatActivity {

List<Character> characters = new ArrayList<>();
private RecyclerView recyclerView;

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


    ajouterVilles();

    recyclerView = (RecyclerView) findViewById(R.id.recyclerView);

    recyclerView.setLayoutManager(new LinearLayoutManager(this));

    recyclerView.setAdapter(new MyAdapter());


}


private void ajouterVilles() {
    characters.add(new Character("Romain", "Leroy", 0625421535));

}

}

这是日志：

Error:(28, 33) error: constructor MyAdapter in class MyAdapter cannot be applied to given types;
    required: List<Character>
    found: no arguments
    reason: actual and formal argument lists differ in length

我试图在参数中传递List但没有成功。

有人可以帮助我吗？

编辑：我的第一个问题已经解决，但现在，我有一个致命的执行：

致命的例外：主要

流程：ad.training.repertoire，PID：24006 android.content.res.Resources $ NotFoundException：字符串资源ID＃0x656235d

在android.content.res.Resources.getText（Resources.java:340）

在android.support.v7.widget.ResourcesWrapper.getText（ResourcesWrapper.java:52）

在android.widget.TextView.setText（TextView.java:4171）

at ad.training.repertoire.MyAdapter $ MyViewHolder.display（MyAdapter.java:69）

at ad.training.repertoire.MyAdapter.onBindViewHolder（MyAdapter.java:40）

at ad.training.repertoire.MyAdapter.onBindViewHolder（MyAdapter.java:15）

Answer 1

您需要为Adapter提供一个列表参数，

MyAdapter adapter = new MyAdapter(characters);

recyclerView.setAdapter(adapter);

Answer 2

更改您的主要活动，如

public class MainActivity extends AppCompatActivity {

List<Character> characters = new ArrayList<>();
private RecyclerView recyclerView;

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


    ajouterVilles();

    recyclerView = (RecyclerView) findViewById(R.id.recyclerView);

    recyclerView.setLayoutManager(new LinearLayoutManager(this));

    recyclerView.setAdapter(new MyAdapter(characters));


}


private void ajouterVilles() {
    characters.add(new Character("Romain", "Leroy", 0625421535));

}
}

因为在适配器中你的适配器构造函数就像

public MyAdapter(List<Character> list) {
    this.characters = list;
}

RecyclerView中适配器和数组之间的问题

2 个答案: