指定的子级已有父级，正在创建回收器视图

Question

有人能帮我吗？我不知道为什么我会犯这个错误。

public class TenantAdapter extends RecyclerView.Adapter<TenantAdapter.TenantViewHolder> {

    private List<Tenant> values;
    private final OnItemClickListener listener;

    public TenantAdapter (List<Tenant> values, OnItemClickListener listener) {
    this.values = values;
    this.listener = listener;
    }

    public interface OnItemClickListener {
    void onItemClick(Tenant tenant);
    }


    static class TenantViewHolder extends RecyclerView.ViewHolder {

    TextView nameTextView;

    TenantViewHolder(TextView itemView) {
        super(itemView);
        nameTextView = itemView;
    }

    void bind(final Tenant tenant, final OnItemClickListener listener){
        nameTextView.setText(tenant.getName());
        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                listener.onItemClick(tenant);
            }
        });
    }
    }


    @Override
    public TenantViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View rowView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_tenant, parent, false);
    TextView nameTextView = (TextView) rowView.findViewById(R.id.item_tenant_name);
    TenantViewHolder tenantViewHolder = new TenantViewHolder(nameTextView);
    return tenantViewHolder;
    }

    @Override
    public void onBindViewHolder(TenantViewHolder holder, int position) {
    holder.bind(values.get(position), listener);
    }

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

}

public class TenantActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    private RecyclerView.Adapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_tenant);
    recyclerView = (RecyclerView) findViewById(R.id.activity_tenant_recycler_view);
    recyclerView.setHasFixedSize(true);
    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);
    List<Tenant> values = new ArrayList<>();
    Tenant temp = new Tenant();
    temp.setName("Gurdwara Guru Nanak Mission Sewa Society");
    values.add(temp);
    adapter = new TenantAdapter(values, new TenantAdapter.OnItemClickListener() {
        @Override
        public void onItemClick(Tenant tenant) {
            TenantActivity.this.startActivity(new Intent(TenantActivity.this, HomeActivity.class));
        }
    });
    recyclerView.setAdapter(adapter);
    }

}

Answer 1

您在ViewHolder的构造函数中传递子TextView，这是不对的。您应该传递父视图并在构造函数中展开它。

static class TenantViewHolder extends RecyclerView.ViewHolder {

    TextView nameTextView;

    TenantViewHolder(View itemView) {
        super(itemView);
        nameTextView = (TextView) itemView.findViewById(R.id.item_tenant_name);
    }
}

在您的适配器中，只需直接传递膨胀视图。

@Override
public TenantViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View rowView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_tenant, parent, false);
    TenantViewHolder tenantViewHolder = new TenantViewHolder(rowView);
    return tenantViewHolder;
}