Question

我正在开发一个Android应用程序（Android Studio）。我想在每一行中实现Visibility GONE / VISIBLE。在图像中有三个recyclerView行，

我想做以下事情：

每一行都有两部分标题＆amp;的详情

当此活动打开所有行时，应隐藏详细信息。
当我点击特定行时，该行的详细信息应显示为可见性可见。
当我再次点击行详细信息时，Visibility GONE将消失。

问题是：如果我点击了第一行，则会显示第一行的详细信息单击下一行任何行标题时不隐藏第一行的详细信息。我有单击两次以显示下一行的详细信息或隐藏详细信息下一行。

Image One Here

Image Two Here

适配器代码：

int i = 0;
holder.salt_head_ll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                i++;
                if (i % 2 == 1) {
                    holder.have_show_ll.setVisibility(View.VISIBLE);
                    holder.l1_arrow.setImageResource(R.drawable.down_arrow_black);

                } else if (i % 2 == 0) {
                    holder.have_show_ll.setVisibility(View.GONE);
                    holder.l1_arrow.setImageResource(R.drawable.right_arrow_black);

                }
            }
        });

Answer 1

如果没有扩展的listView

，你可以在这里实现它

您的卡片或itemView将类似

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:id="@+id/tvTitle"
        />

    <!--this is your detail view layout, modify it accordingly-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/detail"
        android:visibility="gone">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:textSize="16sp"
            android:text="detail goes here\n and here\n and here"/>
    </LinearLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#747474"/>
</LinearLayout>

您的适配器

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

    private List<TextBean> data;
    private Context context;

    public SecondAdapter(Context context, List<TextBean> data){
        this.context = context;
        this.data = data;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.card_second, parent , false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(final ViewHolder holder, int position) {
        final TextBean textBean = data.get(position);
        holder.title.setText(textBean.getTitle());
        if(textBean.isVisibility())
            holder.detailLayout.setVisibility(View.VISIBLE);
        else
            holder.detailLayout.setVisibility(View.GONE);

        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(textBean.isVisibility()){
                    textBean.setVisibility(false);
                    holder.detailLayout.setVisibility(View.GONE);
                    notifyDataSetChanged();
                }else{
                    textBean.setVisibility(true);
                    holder.detailLayout.setVisibility(View.VISIBLE);
                    notifyDataSetChanged();
                }
            }
        });
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder{
        public TextView title;
        public LinearLayout detailLayout;
        public ViewHolder(View item){
            super(item);

            title = (TextView)item.findViewById(R.id.tvTitle);
            detailLayout = (LinearLayout) item.findViewById(R.id.detail);
        }

    }
}

您的BEAN课程 我只考虑了标题，你也可以在这里添加细节

public class TextBean {

    private String title;
    private boolean visibility; // donot forget this, this is to handle visibility

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public boolean isVisibility() {
        return visibility;
    }

    public void setVisibility(boolean visibility) {
        this.visibility = visibility;
    }
}

如何将此附加到RecyclerView

public class SecondActivity extends AppCompatActivity {

    List<TextBean> data = new ArrayList<>();

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

        RecyclerView recyclerView = (RecyclerView)findViewById(R.id.recyclerView);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(linearLayoutManager);
        populatedata(); // populate your data here
        SecondAdapter secondAdapter = new SecondAdapter(this,data);
        recyclerView.setAdapter(secondAdapter);
    }

    public void populatedata(){
        int count = 1;
        TextBean textBean = new TextBean();
        textBean.setTitle("Title"+count);
        textBean.setVisibility(false); // keep them false in beginning
        data.add(textBean);
        count++;

        textBean = new TextBean();
        textBean.setTitle("Title"+count);
        textBean.setVisibility(false);
        data.add(textBean);
        count++;

        textBean = new TextBean();
        textBean.setTitle("Title"+count);
        textBean.setVisibility(false);
        data.add(textBean);
        count++;

        textBean = new TextBean();
        textBean.setTitle("Title"+count);
        textBean.setVisibility(false);
        data.add(textBean);
        count++;

        textBean = new TextBean();
        textBean.setTitle("Title"+count);
        textBean.setVisibility(false);
        data.add(textBean);
        count++;

        textBean = new TextBean();
        textBean.setTitle("Title"+count);
        textBean.setVisibility(false);
        data.add(textBean);
        count++;
    }
}

最后的答案会是这样的

这是完整的解决方案。如果有任何疑问你可以问。

Answer 2

以下是我的建议，您必须尝试RecyclerView，而不是使用ExpandableListView。 ExpandableListView的示例是here，如果您想要列表中的单个子项，请设置：

@Override
public int getChildrenCount(int groupPosition) {
    return 1;
}

Answer 3

首先，按照以下步骤制作适配器的clicklistener：

 public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public ViewHolder(View itemView) {
            super(itemView);
itemView.setOnClickListener(this);
 @Override
        public void onClick(View view) {
            if (clicklistener != null) {
                clicklistener.itemClicked("adapter intials", view, getAdapterPosition());
            }
        }
    }

    public void setClickListener(RecycleListener clicklistener) {
        this.clicklistener = clicklistener;
    }}

创建一个接口类：

    // interface designed to handle list view click events
public interface RecycleListener {

    // adapterPage argument for identifying the adapter it is clicked from.
    void itemClicked(String adapterPage, View view, int position);
//    public void selfItemClicked(View view, int position);
}

然后在您的活动实现中使用此RecycleListener 它会给你覆盖方法

@Override
    public void itemClicked(final String adapterType, View view, final int position) {
    //here control visibility of your layout using position and view
    // find your view using this view
}

Answer 4

尝试在代码中添加一个标志，然后基于该标志在onBindViewHolder中添加可见性。

@Override
public void onBindViewHolder(@NonNull final ProductViewHolder holder, final int position) {
holder.linearLayoutItemButton.setVisibility(canShow(productOrderList.get(position))?
            View.VISIBLE : View.GONE);
holder.addButton.setVisibility(canShow(productOrderList.get(position))?
            View.GONE : View.VISIBLE);

Android：RecyclerView行可见性无法正常工作

4 个答案: