Android RecyclerView onClick 在不同的Activity

Question

一切正常，我的 recyclerView 中的 onClick 正在获取我的项目的位置，但我的设计要求能够单击 recyclerView 的项目并打开一个新活动（作为弹出窗口或弹出）。我可以做到这一点，但我的问题来自我需要在弹出窗口上显示的信息。活动内部的信息是这样的（在 Firebase 值调用内部）

attributeList.removeAll(attributeList);
for (DataSnapshot child : dataSnapshot.child("Attribute").getChildren()){
   Attribute attribute = child.getValue(Attribute.class);
            attribute_list newAttributeList = new attribute_list( attribute.Name + ": " + attribute.Value);
            attributeList.add(newAttributeList);
}
attributeAdapter = new attribute_list_adapter(attributeList, getContext());
recyclerAttribute.setAdapter(attributeAdapter);

这非常适合显示信息，但与点击相关的不仅仅是“值”和“名称”。

基本上，当我选择一个项目时，我需要获取单击的项目的位置（我有）并将其与属性列表中的位置进行比较，以便我可以调用 Firebase 调用（或以某种方式传递数据）到弹出框显示“属性”类中的值（例如名称、值、描述和另一个列表 (recyclerView)。

我的回收站视图：

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

    private List<attribute_list> listItems;
    private Context context;

    public attribute_list_adapter(List<attribute_list> 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.attribute_list, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        attribute_list listItem = listItems.get(position);

        holder.txtTitle.setText(listItem.getTxtTitle());
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public TextView txtTitle;

        public ViewHolder(View itemView) {
            super(itemView);
            itemView.setOnClickListener(this);
            txtTitle = (TextView) itemView.findViewById(R.id.txtTitle);
        }

        @Override
        public void onClick(View v) {

        }
    }
}

Answer 1

这是一个例子：

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

private List<attribute_list> listItems;
private Context context;

public attribute_list_adapter(List<attribute_list> 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.attribute_list, parent, false);
    return new ViewHolder(v);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
   holder.itemView.setOnClickListener(new View.onClickListener() {
   @Override
   public void onClick(View v) {
     onItemClickListener.onItemClick(position);
   }
});

}


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

public class ViewHolder extends RecyclerView.ViewHolder {
    TextView txtberita;
    ImageView imgberita;
    TextView txtnama;
    public ViewHolder(View itemView) {
        super(itemView);
        txtnama = (TextView) itemView.findViewById(R.id.txtnama);
        txtberita = (TextView) itemView.findViewById(R.id.txtberita);
        imgberita = (ImageView) itemView.findViewById(R.id.imgberita);
    }
}

   public void setOnItemClickListener(OnItemClickListener onItemClickListener){
    this.onItemClickListener = onItemClickListener;
}

OnItemClickListener onItemClickListener;

  public interface OnItemClickListener{
    void onItemClick(int position);
}
}

您的活动。在 Oncreate() 中

 public class TestActivity extends AppCompatActivity implements attribute_list_adapter.OnItemClickListener {



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_test);
    attribute_list_adapter adapter = new attribute_list_adapter(listItems, this);
     adapter.setOnItemClickListener(this);
}

  @Override
public void onItemClick(int position) {
   // code here
}
}

Answer 2

创建一个类似的接口

public interface OnSingleItemClickListener{

void onSingleItemClick(int position);
}

然后像这样在你的 ViewHolder 上实现它

public class ViewHolder extends RecyclerView.ViewHolder implements OnSingleItemClickListener {

    public ViewHolder(View itemView) {
        super(itemView);
    }

@Override
void onSingleItemClick(int position){
if(listItems.get(position) == listItems.get(getAdapterPosition)){
// TODO do something here
    }

}

现在您必须在适配器内的 OnBindViewHolder 上执行此操作。

holder.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
        holder.onSingleItemClick(position);
      }
}):