我的recyclerviews

Question

我正在基于recyclerview创建一个项目。我创建了一个Adapter类，其中是ViewHolder，我还创建了名为ListItems的Model类。在我尝试运行应用程序之后执行其他所有操作后，它会显示所有的cardView，但不会显示任何文本。这些是我所拥有的不同类和布局的代码。

这是我称为homeCardAdapter

的AdapterClass

public class homeCardAdapter extends RecyclerView.Adapter<homeCardAdapter.ViewHolder> {

private List<ListItems> listItems;
private Context context;

public homeCardAdapter(List<ListItems> listItems, Context context) {
    this.listItems = listItems;
    this.context = context;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.cardview_home, parent, false);

    return new ViewHolder(v);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    ListItems listItem = listItems.get(position);
    holder.cardHead.setText(listItem.getTitle());
    holder.cardDesc.setText(listItem.getDesc());
    holder.pay.setText(listItem.getPay());
}

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

public class ViewHolder extends RecyclerView.ViewHolder{

    public TextView cardHead, cardDesc, pay;
    public ViewHolder(View itemView) {
        super(itemView);

        cardHead = itemView.findViewById(R.id.companyName);
        cardDesc = itemView.findViewById(R.id.cardDescription);
        pay = itemView.findViewById(R.id.pay);
    }
}
}

这是我的Model类的代码，名为ListItems

public class ListItems {
String title, description, pay;

public ListItems(String title, String description, String pay) {
}

public String getTitle() {
    return title;
}

public String getPay() {
    return pay;
}

public String getDesc() {
    return description;
}

}

这是我将其命名为Welcome

的Java Activity

public class Welcome extends AppCompatActivity {

private static final String TAG = "Welcome";

private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;

private List<ListItems> listItems;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_welcome);
    Log.d(TAG, "onCreate: starting");

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

    listItems = new ArrayList<>();

    for (int i = 0 ; i < 10; i++){
        ListItems listItem = new ListItems(
                "Port Organization" + (i+1),
                "Lorem Ipsum The Description Will Go over Here So As for case" + (i),
                "250" + (i) + "/ Week"
        );
        listItems.add(listItem);
    }

    adapter = new homeCardAdapter(listItems,this);

    recyclerView.setAdapter(adapter);
}
}

这是我在RecyclerView中使用的CardView

    

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/pay"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="#000"
            android:text="$450 / Week"
            android:textColor="#FFF"
            android:layout_marginStart="20dp"
            android:layout_marginTop="20dp"
            android:paddingTop="5dp"
            android:paddingBottom="5dp"
            android:paddingEnd="10dp"
            android:paddingStart="10dp"
            android:textSize="18sp"/>
        <TextView
            android:id="@+id/companyName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Company Name"
            android:layout_below="@id/pay"
            android:textSize="22sp"
            android:textColor="#000"
            android:layout_marginTop="10dp"
            android:layout_marginStart="20dp"
            />
        <TextView
            android:id="@+id/cardDescription"
            android:layout_width="220dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="20dp"
            android:layout_marginTop="10dp"
            android:text="Lorem Ipsum Some Text Goes Over Here"
            android:layout_below="@id/companyName"/>


    </RelativeLayout>

</android.support.v7.widget.CardView>

请建议我编辑，以便我可以将文本存入我的卡片。

Answer 1

您没有在构造函数中初始化值，像这样的构造函数使用

public ListItems(String title, String description, String pay) {
this.title = title;
this.description= description;
this.pay= pay;
}