Java 显示和隐藏列表视图

我想这样做列表视图。我想要的是当用户触摸第一项时，第二项行出现。当用户触摸第三行项目时，上一个项目将再次自动隐藏。如何实现这一点而不是使用可扩展的listview？指导我实现这一目标。提前谢谢。

很抱歉我有点忙，所以我现在无法编写代码。但是下面是你可以用来得到你想要的东西的方法。我会在有时间的时候添加代码

有一个参数名“android:animateayoutchanges”，将其应用于视图的父视图，该父视图将可见和不可见

保存已单击并展开的项目的位置

单击该项目时，将视图的可见性设置为“可见”

再次单击该项目位置时，将该项目的可见性设置为“消失”

单击其他项目时，将存储项目位置的可见性设置为“已消失”，将当前选定项目的可见性设置为“可见”，并存储其位置。 就这样

android:animateayoutchanges的使用使得当您将可见性设置为visible或gone并且视图向上或向下移动时，此移动将具有平滑的动画

稍后我将用代码更新我的答案，但您将从上述步骤中获得想法

更新

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

    private ArrayList<ShippingOptions> list;
    private int expandedPosition = -1;
    private int listSize = 0;
    private int checkedPositon = -1;
    private String currency;

    public ShippingAdapter(ArrayList<ShippingOptions> list, String currency, AdapterInterface listener) {
        this.list = list;
        listSize = list.size();
        this.currency = currency;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        // create a new view
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_shipping_options, parent, false);
        // Layout in which you will add **android:animatelayoutchanges**
        return new ViewHolder(v);
    }


    @Override
    public void onBindViewHolder(final ViewHolder holder, final int position) {
        ShippingOptions item = list.get(position);
        holder.name.setText(item.getName());
        holder.fee.setText(utils.getFormattedCurrency(currency, Double.parseDouble(item.getShippingFee())));
        holder.description.setText(item.getDescription());
        holder.deliveryTime.setText(item.getDeliveryTime());
        if (listSize == 1) {
            list.get(position).setExpanded(true);
        }


        **if (list.get(position).isExpanded()) {
            holder.expandableView.setVisibility(View.VISIBLE);
            holder.checkBox.setVisibility(View.VISIBLE);
            if (checkedPositon == position) {
                holder.checkBox.setChecked(true);
            } else {
                holder.checkBox.setChecked(false);
            }
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                holder.parent.setElevation(12);
                holder.parent.setTranslationZ(6);
                holder.parent.setClipToPadding(false);
                holder.parent.setClipToOutline(false);
            }
        } else {
            holder.expandableView.setVisibility(View.GONE);
            holder.checkBox.setVisibility(View.GONE);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                holder.parent.setElevation(0);
                holder.parent.setTranslationZ(0);
            }
        }**

        **holder.parent.setOnClickListener(new View.OnClickListener() {
            @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
            @Override
            public void onClick(View v) {
                if (listSize > 1) {
                    if (expandedPosition == position) {
                        if (list.get(position).isExpanded()) {
                            list.get(position).setExpanded(false);
                        } else {
                            list.get(position).setExpanded(true);
                        }
                        notifyItemChanged(position);
                    } else {
                        if (expandedPosition >= 0) {
                            list.get(expandedPosition).setExpanded(false);
                            notifyItemChanged(expandedPosition);
                        }
                        expandedPosition = position;
                        list.get(expandedPosition).setExpanded(true);
                        notifyItemChanged(expandedPosition);
                    }
                }
            }
        });**


    }

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

    public class ViewHolder extends RecyclerView.ViewHolder {
        // each data item is just a string in this case
        public TextView name, fee, description, deliveryTime;
        public LinearLayout parent, expandableView;
        public CheckBox checkBox;

        public ViewHolder(View v) {
            super(v);

            name = (TextView) v.findViewById(R.id.tv_shipping_name);
            fee = (TextView) v.findViewById(R.id.tv_shipping_fee);
            description = (TextView) v.findViewById(R.id.tv_description);
            deliveryTime = (TextView) v.findViewById(R.id.tv_delivery_time);
            parent = (LinearLayout) v.findViewById(R.id.parent);
            expandableView = (LinearLayout) v.findViewById(R.id.expandable_view);
            checkBox = (CheckBox) v.findViewById(R.id.checkbox);

        }


    }
}

---

你的意思是更新活动xml上的参数吗？“android:animateayoutchanges”是的，在列表项的布局中添加此参数并将其设置为True如何执行第2步？保存项目位置是什么意思？我相信你是android编程新手，你将获得单击的特定项目的位置。用整数变量保存那个位置是的，我是个新手。android:listview上的animatedlayoutchanges（右？；）

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/parent"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:animateLayoutChanges="true"
    android:background="@color/white"
    android:orientation="vertical"
    android:padding="10dp">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="?listPreferredItemHeightSmall"
        android:gravity="center_vertical">

        <TextView
            android:id="@+id/tv_shipping_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="@style/text_medium"
            android:textColor="@color/colorPrimary" />

        <CheckBox
            android:id="@+id/checkbox"
            android:layout_width="35dp"
            android:layout_height="35dp"
            android:layout_alignParentEnd="true"
            android:background="?android:attr/listChoiceIndicatorMultiple"
            android:button="@null"
            android:checked="false"
            android:visibility="visible" />
    </RelativeLayout>

    <LinearLayout
        android:id="@+id/expandable_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:visibility="visible">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingBottom="10dp"
            android:paddingTop="10dp">

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/label_shipping_fee" />

            <TextView
                android:id="@+id/tv_shipping_fee"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="2" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingBottom="10dp"
            android:paddingTop="10dp">

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/lable_description" />

            <TextView
                android:id="@+id/tv_description"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="2" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingBottom="10dp"
            android:paddingTop="10dp">

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/delivery_time" />

            <TextView
                android:id="@+id/tv_delivery_time"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="2" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

    public class ShippingOptions implements Serializable {

    private String id;
    private String name;
    private String shippingFee;
    private String description;
    private String deliveryTime;
    private boolean isExpanded;
    private boolean isChecked;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getShippingFee() {
        return shippingFee;
    }

    public void setShippingFee(String shippingFee) {
        this.shippingFee = shippingFee;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getDeliveryTime() {
        return deliveryTime;
    }

    public void setDeliveryTime(String deliveryTime) {
        this.deliveryTime = deliveryTime;
    }

    public boolean isExpanded() {
        return isExpanded;
    }

    public void setExpanded(boolean expanded) {
        isExpanded = expanded;
    }

    public boolean isChecked() {
        return isChecked;
    }

    public void setChecked(boolean checked) {
        isChecked = checked;
    }
}