ListView调用按钮删除某一行item

ListView布局包括checkbox(复选框)、img、title（商品名称）、type（分类）、两个Button（加减）、三个textview（原价，单价，数量），imgDelete（delete）

xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="90dp"
    android:background="@color/white"
    android:gravity="center_vertical"
    android:orientation="horizontal">
    <!-- 小对勾的布局 -->
    <CheckBox
        android:id="@+id/shopping_lv_checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="@dimen/dp_10"
        android:focusable="false"
        android:focusableInTouchMode="false" />
    <!-- 图片布局 -->
    <ImageView
        android:id="@+id/shopping_lv_img"
        android:layout_width="64dp"
        android:layout_height="64dp"
        android:layout_margin="10dp"
        android:scaleType="centerCrop"
        android:src="@mipmap/tuceng1" />
    <!-- 商品名称和价格的布局 -->
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <!-- 商品名称的布局 -->
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/dp_5"
            android:gravity="center_vertical">

            <TextView
                android:id="@+id/shopping_lv_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="连衣裙女夏季"
                android:textSize="@dimen/sp_14" />

            <TextView
                android:id="@+id/shopping_lv_moneyDel"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_alignParentTop="true"
                android:layout_marginEnd="20dp"
                android:text="1111"
                android:textSize="@dimen/sp_14" />

        </RelativeLayout>
        <!-- 价格的布局 -->
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:gravity="center_vertical"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/shopping_lv_content"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp"
                android:text="500g"
                android:textSize="12sp" />

            <TextView
                android:id="@+id/shopping_lv_money"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_alignTop="@+id/shopping_lv_content"
                android:layout_gravity="bottom"
                android:layout_marginEnd="20dp"
                android:text="￥66"
                android:textColor="@color/balance_bg"
                android:textSize="16sp" />
        </RelativeLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="33dp"
            android:gravity="center_vertical"
            android:orientation="horizontal">
            <!-- 加号 -->
            <ImageView
                android:id="@+id/shopping_lv_sub"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:background="@drawable/add_button_shape"
                android:src="@mipmap/icon_minus_3x" />

            <TextView
                android:id="@+id/shopping_lv_number"
                android:layout_width="30dp"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginLeft="@dimen/dp_10"
                android:layout_marginStart="10dp"
                android:layout_toEndOf="@+id/shopping_lv_sub"
                android:gravity="center"
                android:inputType=""
                android:text="1"
                android:textSize="13sp" />
            <!-- 减号-->
            <ImageView
                android:id="@+id/shopping_lv_add"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_alignTop="@+id/shopping_lv_sub"
                android:layout_marginLeft="@dimen/dp_10"
                android:layout_toEndOf="@+id/shopping_lv_number"
                android:background="@drawable/add_button_shape"
                android:src="@mipmap/icon_add_3x" />

            <ImageView
                android:id="@+id/shopping_lv_delete"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_centerVertical="true"
                android:layout_marginEnd="20dp"
                android:layout_marginLeft="@dimen/dp_110"
                android:layout_marginRight="@dimen/dp_15"
                android:src="@mipmap/btn_delete_3x" />
        </RelativeLayout>


    </LinearLayout>
</LinearLayout>

获取listview中的imgDelete控件，执行删除单条纪录的操作。
ShoppingCartListViewAdapter：

 private View.OnClickListener onDelItem;//删除单条item的接口

...


  public View getView(final int i, View view, ViewGroup viewGroup) {
        ViewHolder holder = null;
        if (view == null) {
            holder = new ViewHolder();
            view = LayoutInflater.from(this.context).inflate(R.layout.shopping_listview_item, null, true);
          //实例化item获取控件
            holder.shopping_lv_delete = (ImageView) view.findViewById(R.id.shopping_lv_delete);
            //设置回调监听
            holder. shopping_lv_delete.setOnClickListener(onDelItem);
            holder.shopping_lv_delete.setTag(i);
            view.setTag(holder);

        } else {
            holder = (ViewHolder) view.getTag();
        }


 class ViewHolder {
        
        ImageView shopping_lv_delete;
    }
    
    /**
    *定义监听接口
    */
 public void setOnDelItem(View.OnClickListener onDelItem) {
        this.onDelItem = onDelItem;
    }

Activity：

private ShoppingCartListViewAdapter adapter;
private ListView shopping_listview;
private List<ShoppingCartListView> list = new ArrayList<ShoppingCartListView>();

...

shopping_lv_delete = (ImageView) findViewById(R.id.shopping_lv_delete);
shopping_lv_delete.setOnClickListener(this);

onCreate方法中设置适配器的监听，

 adapter = new ShoppingCartListViewAdapter(getActivity(), list);
        shopping_listview.setAdapter(adapter);
        **adapter.setOnDelItem(this);**

通过Tag的position，获取当前点击的item，
这里使用了popupMenu。在点击删除的时候会弹出确认删除框

    if (tag != null && tag instanceof Integer) { 
                    int position = (Integer) tag;
                    showPopupMenu(view, position);
                }

    //删除弹窗
    public void showPopupMenu(final View view, final int position) {
        final PopupMenu popup = new PopupMenu(getActivity(), view);
        popup.getMenuInflater().inflate(R.menu.popup, popup.getMenu());
        popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem menuItem) {
                switch (menuItem.getItemId()) {
                    case R.id.remove:
                        list.remove(position);
                        adapter.notifyDataSetChanged();
                        break;
                }
                return false;
            }
        });
        popup.show();
    }

popup

<?xml version="1.0" encoding="utf-8"?>
    <menu xmlns:android="http://schemas.android.com/apk/res/android">
        <item
            android:id="@+id/remove"
            android:title="@string/delete"/>
    </menu>