ShoppingMallApp03
2018-10-03 本文已影响10人
GeekGray
商品详情页面的数据传递和接收
创建数据传递 Bean 对象
/**
* @author: Hashub
* @WeChat: NGSHMVP
* @Date: 2018/8/26 8:59
* @function:商品对象
*
*/
public class GoodsBean implements Serializable
{
//价格
private String cover_price;
//图片
private String figure;
//名称
private String name;
//产品id
private String product_id;
private int number = 1;
/**
* 是否被选中
*/
private boolean isSelected = true;
public boolean isSelected()
{
return isSelected;
}
public void setSelected(boolean selected)
{
isSelected = selected;
}
public int getNumber()
{
return number;
}
public void setNumber(int number)
{
this.number = number;
}
public String getCover_price()
{
return cover_price;
}
public void setCover_price(String cover_price)
{
this.cover_price = cover_price;
}
public String getFigure()
{
return figure;
}
public void setFigure(String figure)
{
this.figure = figure;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public String getProduct_id()
{
return product_id;
}
public void setProduct_id(String product_id)
{
this.product_id = product_id;
}
@Override
public String toString()
{
return "GoodsBean{" +
"cover_price='" + cover_price + '\'' +
", figure='" + figure + '\'' +
", name='" + name + '\'' +
", product_id='" + product_id + '\'' +
", number=" + number +
", isSelected=" + isSelected +
'}';
}
}
传递代码
GoodsBean goodsBean = new GoodsBean();
goodsBean.setCover_price(listBean.getCover_price());
goodsBean.setFigure(listBean.getFigure());
goodsBean.setName(listBean.getName());
goodsBean.setProduct_id(listBean.getProduct_id());
startGoodsInfoActivity(goodsBean);
接收代码
//接收数据
goodsBean = (GoodsBean) getIntent().getSerializableExtra("goodsBean");
if (goodsBean != null)
{
setDataForView(goodsBean);
}
设置文本和图片数据
/**
* 设置数据
*
* @param goodsBean
*/
private void setDataForView(GoodsBean goodsBean)
{
//设置图片
//iv_good_info_image
Glide.with(this)
.load(Constants.BASE_URL_IMAGE + goodsBean.getFigure())
.into(ivGoodInfoImage);
//设置文本
tvGoodInfoName.setText(goodsBean.getName());
//设置价格
tvGoodInfoPrice.setText("￥" + goodsBean.getCover_price());
setWebViewData(goodsBean.getProduct_id());
}
使用 WebView 加载设置网页数据
private void setWebViewData(String product_id)
{
if (product_id != null)
{
wbGoodInfoMore.loadUrl("http://www.atguigu.com");
WebSettings webSettings = wbGoodInfoMore.getSettings();
//支持双击页面变大变小
webSettings.setUseWideViewPort(true);
//设置支持JavaScript
webSettings.setJavaScriptEnabled(true);
//优先使用缓存
webSettings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
wbGoodInfoMore.setWebViewClient(new WebViewClient()
{
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
//返回值是true的时候控制去WebView打开，为false调用系统浏览器或第三方浏览器
view.loadUrl(url);
return true;
}
});
}
}
购物车
购物车存储器类
1.存储类CartStorage
/**
* @author: Hashub
* @WeChat: NGSHMVP
* @Date: 2018/8/30 16:04
* @function:
*/
public class CartStorage
{
public static final String JSON_CART = "json_cart";
private static CartStorage instance;
private final Context mContext;
//SparseArray的性能优于HashMap
private SparseArray<GoodsBean> sparseArray;
private CartStorage(Context context)
{
this.mContext = context;
//把之前存储的数据读取
sparseArray = new SparseArray<>(100);
listToSparseArray();
}
/**
* 从本地读取的数据加入到SparseArray中
*/
private void listToSparseArray()
{
List<GoodsBean> goodsBeanList = getAllData();
//把List数据转换成SparseArray
for (int i = 0; i < goodsBeanList.size(); i++)
{
GoodsBean goodsBean = goodsBeanList.get(i);
sparseArray.put(Integer.parseInt(goodsBean.getProduct_id()), goodsBean);
}
}
/**
* 获取本地所有的数据
*
* @return
*/
public List<GoodsBean> getAllData()
{
List<GoodsBean> goodsBeanList = new ArrayList<>();
//1.从本地获取
String json = CacheUtils.getString(mContext, JSON_CART);
//2.使用Gson转换成列表
//判断不为空的时候执行
if (!TextUtils.isEmpty(json))
{
//把String转换成List
goodsBeanList = new Gson().fromJson(json, new TypeToken<List<GoodsBean>>()
{
}.getType());
}
return goodsBeanList;
}
/**
* 得到购车实例
*
* @return
*/
public static CartStorage getInstance()
{
if (instance == null)
{
instance = new CartStorage(SmApplication.getContext());
}
return instance;
}
/**
* 添加数据
*
* @param goodsBean
*/
public void addData(GoodsBean goodsBean)
{
//1.添加到内存中SparseArray
//如果当前数据已经存在，就修改成number递增
GoodsBean tempData = sparseArray.get(Integer.parseInt(goodsBean.getProduct_id()));
if (tempData != null)
{
//内存中有了这条数据
tempData.setNumber(tempData.getNumber() + 1);
}
else
{
tempData = goodsBean;
tempData.setNumber(1);
}
//同步到内存中
sparseArray.put(Integer.parseInt(tempData.getProduct_id()), tempData);
//2.同步到本地
saveLocal();
}
/**
* 删除数据
*
* @param goodsBean
*/
public void deleteData(GoodsBean goodsBean)
{
//1.内存中删除
sparseArray.delete(Integer.parseInt(goodsBean.getProduct_id()));
//2.把内存的保持到本地
saveLocal();
}
/**
* 更新数据
*
* @param goodsBean
*/
public void updateData(GoodsBean goodsBean)
{
//1.内存中更新
sparseArray.put(Integer.parseInt(goodsBean.getProduct_id()), goodsBean);
//2.同步到本地
saveLocal();
}
/**
* 保持数据到本地
*/
private void saveLocal()
{
//1.SparseArray转换成List
List<GoodsBean> goodsBeanList = sparseToList();
//2.使用Gson把列表转换成String类型
String json = new Gson().toJson(goodsBeanList);
//3.把String数据保存
CacheUtils.saveString(mContext, JSON_CART, json);
}
private List<GoodsBean> sparseToList()
{
List<GoodsBean> goodsBeanList = new ArrayList<>();
for (int i = 0; i < sparseArray.size(); i++)
{
GoodsBean goodsBean = sparseArray.valueAt(i);
goodsBeanList.add(goodsBean);
}
return goodsBeanList;
}
}
2. 使用 Gson
compile 'com.google.code.gson:gson:2.2.4'
3. 缓存文本工具类
/**
* @author: Hashub
* @WeChat: NGSHMVP
* @Date: 2018/8/26 9:13
* @function:缓存工具类
*/
public class CacheUtils
{
/**
* 得到保持的String类型的数据
*
* @param context
* @param key
* @return
*/
public static String getString(Context context, String key)
{
SharedPreferences sp = context.getSharedPreferences("hashub", Context.MODE_PRIVATE);
return sp.getString(key, "");
}
/**
* 保持String类型数据
*
* @param context 上下文
* @param key
* @param value 保持的值
*/
public static void saveString(Context context, String key, String value)
{
SharedPreferences sp = context.getSharedPreferences("hashub", Context.MODE_PRIVATE);
sp.edit().putString(key, value).commit();
}
}
4. 在 GoodsInfoActivity 添加商品
case R.id.btn_good_info_addcart:
CartStorage.getInstance().addData(goodsBean);
Toast.makeText(this, "添加到成功了", Toast.LENGTH_SHORT).show();
break;
5. 加上在 sdcard 上的读写权限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
购物车展示页面
1. 自定义增加删除按钮
布局文件 add_sub_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal">
<ImageView
android:id="@+id/iv_sub"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/goods_sub_btn" />
<TextView
android:textColor="@android:color/background_dark"
android:id="@+id/tv_value"
android:layout_width="50dp"
android:layout_height="50dp"
android:gravity="center"
android:text="1"
android:textSize="20sp" />
<ImageView
android:id="@+id/iv_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/goods_add_btn" />
</LinearLayout>
具体代码 AddSubView 类
/**
* @author: Hashub
* @WeChat: NGSHMVP
* @Date: 2018/8/30 16:22
* @function:自定义删除增加按钮
*/
public class AddSubView extends LinearLayout implements View.OnClickListener
{
private final Context mContext;
private OnNumberChangeListener onNumberChangeListener;
private ImageView ivSub;
private TextView tvValue;
private ImageView ivAdd;
private int value = 1;
private int minValue = 1;
private int maxValue = 5;
public AddSubView(Context context, AttributeSet attrs)
{
super(context, attrs);
this.mContext = context;
//把布局文件实例化，并且加载到AddSubView类中
View.inflate(context, R.layout.add_sub_view, this);
ivSub = (ImageView) findViewById(R.id.iv_sub);
tvValue = (TextView) findViewById(R.id.tv_value);
ivAdd = (ImageView) findViewById(R.id.iv_add);
initData();
}
private void initData()
{
int value = getValue();
setValue(value);
//设置点击事件
ivSub.setOnClickListener(this);
ivAdd.setOnClickListener(this);
}
private void addNumebr()
{
if (value < maxValue)
{
value++;
}
setValue(value);
if (onNumberChangeListener != null)
{
onNumberChangeListener.onNumberChange(value);
}
}
/**
* 减
*/
private void subNumber()
{
if (value > minValue)
{
value--;
}
setValue(value);
if (onNumberChangeListener != null)
{
onNumberChangeListener.onNumberChange(value);
}
}
public int getValue()
{
String valueStr = tvValue.getText().toString().trim();
if (!TextUtils.isEmpty(valueStr))
{
value = Integer.parseInt(valueStr);
}
return value;
}
public void setValue(int value)
{
this.value = value;
tvValue.setText(value + "");
}
public int getMinValue()
{
return minValue;
}
public void setMinValue(int minValue)
{
this.minValue = minValue;
}
public int getMaxValue()
{
return maxValue;
}
public void setMaxValue(int maxValue)
{
this.maxValue = maxValue;
}
@Override
public void onClick(View v)
{
switch (v.getId())
{
case R.id.iv_sub://减
subNumber();
break;
case R.id.iv_add://加
addNumebr();
break;
}
}
/**
* 当数量发生变化的时候回调
*/
public interface OnNumberChangeListener
{
/**
* 当数据发生变化的时候回调
*
* @param value
*/
public void onNumberChange(int value);
}
/**
* 设置数量变化的监听
*
* @param onNumberChangeListener
*/
public void setOnNumberChangeListener(OnNumberChangeListener onNumberChangeListener)
{
this.onNumberChangeListener = onNumberChangeListener;
}
}
2. 页面分析
最外边是 LinearLayout
1:相对布局
2:View 分割线
3:FrameLayou
1:LinearLayout
1:RecyclerView
2:LinearLayout(结算)
3:LinearLayout(删除)
2:购车显示布局 empty_cart.xml
3. 购物车展示页面布局文件fragment_shoppingcart.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="match_parent"
android:background="#fff"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#fff">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginLeft="30dp"
android:layout_weight="1"
android:text="购物车"
android:textColor="#303235"
android:textSize="20sp" />
<TextView
android:id="@+id/tv_shopcart_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="编辑"
android:textColor="#303235" />
</RelativeLayout>
<View
android:layout_width="match_parent"
android:layout_height="5dp"
android:background="#eeee" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--线性布局-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#eee" />
<!--结算的线性布局-->
<LinearLayout
android:id="@+id/ll_check_all"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#fff"
android:orientation="horizontal"
android:visibility="visible">
<CheckBox
android:id="@+id/checkbox_all"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:button="@null"
android:drawableLeft="@drawable/checkbox_selector"
android:drawablePadding="10dp"
android:padding="10dp"
android:paddingLeft="0dp"
android:text="全选"
android:textColor="#303235"
android:textSize="15sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="合计:"
android:textColor="#303235"
android:textSize="15sp" />
<TextView
android:id="@+id/tv_shopcart_total"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="10dp"
android:text="￥0.00"
android:textColor="#ed3f3f"
android:textSize="15sp" />
<Button
android:id="@+id/btn_check_out"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#ed3f3f"
android:text="去结算"
android:textColor="#fff" />
</LinearLayout>
<!--删除的显示布局-->
<LinearLayout
android:id="@+id/ll_delete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#fff"
android:orientation="horizontal"
android:padding="5dp"
android:visibility="gone">
<CheckBox
android:id="@+id/cb_all"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_weight="1"
android:button="@null"
android:drawableLeft="@drawable/checkbox_selector"
android:drawablePadding="10dp"
android:padding="10dp"
android:paddingLeft="0dp"
android:text="全选"
android:textColor="#303235"
android:textSize="15sp" />
<Button
android:id="@+id/btn_delete"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:background="@drawable/words"
android:text="删除"
android:textColor="#303235"
android:textSize="15sp" />
<Button
android:id="@+id/btn_collection"
android:layout_width="wrap_content"
android:layout_height="35dp"
android:layout_marginLeft="15dp"
android:background="@drawable/wordsred"
android:text="收藏"
android:textColor="#ed3f3f"
android:textSize="15sp" />
</LinearLayout>
</LinearLayout>
<!--当数据为空的时候显示的布局-->
<include layout="@layout/empty_cart"></include>
</FrameLayout>
</LinearLayout>
4. 设置购物车内容为空的布局 empty_cart.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ll_empty_shopcart"
android:layout_width="match_parent"
android:background="#fff"
android:visibility="gone"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/iv_empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/empty_cart" />
<TextView
android:id="@+id/tv_empty_cart_tobuy"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/iv_empty"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:background="@drawable/shape_rec_textview"
android:paddingBottom="5dp"
android:paddingLeft="25dp"
android:paddingRight="25dp"
android:paddingTop="5dp"
android:text="去逛逛"
android:textColor="#ed3f3f"
android:textSize="15sp" />
</RelativeLayout>
</LinearLayout>
5. item 布局 item_shop_cart.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="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<CheckBox
android:id="@+id/cb_gov"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:button="@drawable/checkbox_selector"
android:checked="true"
android:clickable="false" />
<ImageView
android:id="@+id/iv_gov"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="@drawable/icon_good_detail_cart"
android:scaleType="fitXY" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="5dp"
android:orientation="vertical">
<TextView
android:id="@+id/tv_desc_gov"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:lines="2"
android:text="华硕（ASUS）经典系列X554LP 15.6英寸笔记本 （i5-5200U 4G 500G R5-M230 1G独显 蓝牙 Win8.1 黑色）"
android:textColor="#404040"
android:textSize="16sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/tv_price_gov"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="￥0.0"
android:textColor="#f00"
android:textSize="16sp" />
<com.example.shoppingmall.shoppingcart.view.AddSubView
android:id="@+id/numberAddSubView"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.6dp"
android:background="#22000000" />
</LinearLayout>
2. ShoppingCartFragment 初始化布局
/**
* @author: Hashub
* @WeChat: NGSHMVP
* @Date: 2018/8/24 17:03
* @function:购物车的Fragment
*/
public class ShoppingCartFragment extends BaseFragment implements View.OnClickListener
{
//编辑状态
private static final int ACTION_EDIT = 1;
//完成状态
private static final int ACTION_COMPLETE = 2;
private ShoppingCartAdapter adapter;
private TextView tvShopcartEdit;
private RecyclerView recyclerview;
private LinearLayout llCheckAll;
private CheckBox checkboxAll;
private TextView tvShopcartTotal;
private Button btnCheckOut;
private LinearLayout llDelete;
private CheckBox cbAll;
private Button btnDelete;
private Button btnCollection;
private ImageView ivEmpty;
private TextView tvEmptyCartTobuy;
private LinearLayout ll_empty_shopcart;
@Override
public View initView()
{
Log.e(TAG, "购物车的Fragment的UI被初始化了");
View view = View.inflate(mContext, R.layout.fragment_shopping_cart, null);
tvShopcartEdit = (TextView) view.findViewById(R.id.tv_shopcart_edit);
recyclerview = (RecyclerView) view.findViewById(R.id.recyclerview);
llCheckAll = (LinearLayout) view.findViewById(R.id.ll_check_all);
checkboxAll = (CheckBox) view.findViewById(R.id.checkbox_all);
tvShopcartTotal = (TextView) view.findViewById(R.id.tv_shopcart_total);
btnCheckOut = (Button) view.findViewById(R.id.btn_check_out);
llDelete = (LinearLayout) view.findViewById(R.id.ll_delete);
cbAll = (CheckBox) view.findViewById(R.id.cb_all);
btnDelete = (Button) view.findViewById(R.id.btn_delete);
btnCollection = (Button) view.findViewById(R.id.btn_collection);
ll_empty_shopcart = (LinearLayout) view.findViewById(R.id.ll_empty_shopcart);
ivEmpty = (ImageView) view.findViewById(R.id.iv_empty);
tvEmptyCartTobuy = (TextView) view.findViewById(R.id.tv_empty_cart_tobuy);
btnCheckOut.setOnClickListener(this);
btnDelete.setOnClickListener(this);
btnCollection.setOnClickListener(this);
initListener();
return view;
}
private void initListener()
{
//设置默认的编辑状态
tvShopcartEdit.setTag(ACTION_EDIT);
tvShopcartEdit.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
int action = (int) v.getTag();
if (action == ACTION_EDIT)
{
//切换为完成状态
showDelete();
}
else
{
//切换成编辑状态
hideDelete();
}
}
});
}
private void hideDelete()
{
//1.设置状态和文本-编辑
tvShopcartEdit.setTag(ACTION_EDIT);
tvShopcartEdit.setText("编辑");
//2.变成非勾选
if (adapter != null)
{
adapter.checkAll_none(true);
adapter.checkAll();
adapter.showTotalPrice();
}
//3.删除视图显示
llDelete.setVisibility(View.GONE);
//4.结算视图隐藏
llCheckAll.setVisibility(View.VISIBLE);
}
private void showDelete()
{
//1.设置状态和文本-完成
tvShopcartEdit.setTag(ACTION_COMPLETE);
tvShopcartEdit.setText("完成");
//2.变成非勾选
if (adapter != null)
{
adapter.checkAll_none(false);
adapter.checkAll();
}
//3.删除视图显示
llDelete.setVisibility(View.VISIBLE);
//4.结算视图隐藏
llCheckAll.setVisibility(View.GONE);
}
@Override
public void initData()
{
super.initData();
Log.e(TAG, "购物车的Fragment的数据被初始化了");
}
@Override
public void onResume()
{
super.onResume();
showData();
}
/**
*
*/
private void showData()
{
List<GoodsBean> goodsBeanList = CartStorage.getInstance().getAllData();
if (goodsBeanList != null && goodsBeanList.size() > 0)
{
tvShopcartEdit.setVisibility(View.VISIBLE);
llCheckAll.setVisibility(View.VISIBLE);
//有数据
//把当没有数据显示的布局-隐藏
ll_empty_shopcart.setVisibility(View.GONE);
//设置适配器
adapter = new ShoppingCartAdapter(mContext, goodsBeanList, tvShopcartTotal, checkboxAll, cbAll);
recyclerview.setAdapter(adapter);
//设置布局管理器
recyclerview.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.VERTICAL, false));
}
else
{
//没有数据
//显示数据为空的布局
emptyShoppingCart();
}
}
private void emptyShoppingCart()
{
ll_empty_shopcart.setVisibility(View.VISIBLE);
tvShopcartEdit.setVisibility(View.GONE);
llDelete.setVisibility(View.GONE);
}
@Override
public void onClick(View v)
{
if (v == btnCheckOut)
{
// Handle clicks for btnCheckOut
//结算
// pay(v);
}
else if (v == btnDelete)
{
// Handle clicks for btnDelete
//删除选中的
adapter.deleteData();
//校验状态
adapter.checkAll();
//数据大小为0
if (adapter.getItemCount() == 0)
{
emptyShoppingCart();
}
}
else if (v == btnCollection)
{
// Handle clicks for btnCollection
}
}
}
适配器 ShopCartAdapter
/**
* @author: Hashub
* @WeChat: NGSHMVP
* @Date: 2018/9/1 8:51
* @function:购物车适配器
*/
public class ShoppingCartAdapter extends RecyclerView.Adapter<ShoppingCartAdapter.ViewHolder>
{
private final Context mContext;
private final List<GoodsBean> datas;
private final TextView tvShopcartTotal;
private final CheckBox checkboxAll;
//完成状态下的删除CheckBox
private final CheckBox cbAll;
public ShoppingCartAdapter(Context mContext, List<GoodsBean> goodsBeanList, TextView tvShopcartTotal, CheckBox checkboxAll, CheckBox cbAll)
{
this.mContext = mContext;
this.datas = goodsBeanList;
this.tvShopcartTotal = tvShopcartTotal;
this.checkboxAll = checkboxAll;
this.cbAll = cbAll;
showTotalPrice();
//设置点击事件
setListener();
//校验是否全选
checkAll();
}
private void setListener()
{
setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(int position)
{
//1.根据位置找到对应的Bean对象
GoodsBean goodsBean = datas.get(position);
//2.设置取反状态
goodsBean.setSelected(!goodsBean.isSelected());
//3.刷新状态
notifyItemChanged(position);
//4.校验是否全选
checkAll();
//5.重新计算总价格
showTotalPrice();
}
});
//CheckBox的点击事件
checkboxAll.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
//1.得到状态
boolean isCheck = checkboxAll.isChecked();
//2.根据状态设置全选和非全选
checkAll_none(isCheck);
//3.计算总价格
showTotalPrice();
}
});
cbAll.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
//1.得到状态
boolean isCheck = cbAll.isChecked();
//2.根据状态设置全选和非全选
checkAll_none(isCheck);
}
});
}
/**
* 设置全选和非全选
*
* @param isCheck
*/
public void checkAll_none(boolean isCheck)
{
if (datas != null && datas.size() > 0)
{
for (int i = 0; i < datas.size(); i++)
{
GoodsBean goodsBean = datas.get(i);
goodsBean.setSelected(isCheck);
notifyItemChanged(i);
}
}
}
public void checkAll()
{
if (datas != null && datas.size() > 0)
{
int number = 0;
for (int i = 0; i < datas.size(); i++)
{
GoodsBean goodsBean = datas.get(i);
if (!goodsBean.isSelected())
{
//非全选
checkboxAll.setChecked(false);
cbAll.setChecked(false);
}
else
{
//选中的
number++;
}
}
if (number == datas.size())
{
//全选
checkboxAll.setChecked(true);
cbAll.setChecked(true);
}
}
else
{
checkboxAll.setChecked(false);
cbAll.setChecked(false);
}
}
public void showTotalPrice()
{
tvShopcartTotal.setText("合计:" + getTotalPrice());
}
/**
* 计算总价格
*
* @return
*/
public double getTotalPrice()
{
double totalPrice = 0.0;
if (datas != null && datas.size() > 0)
{
for (int i = 0; i < datas.size(); i++)
{
GoodsBean goodsBean = datas.get(i);
if (goodsBean.isSelected())
{
totalPrice = totalPrice + Double.valueOf(goodsBean.getNumber()) * Double.valueOf(goodsBean.getCover_price());
}
}
}
return totalPrice;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
View itemView = View.inflate(mContext, R.layout.item_shop_cart, null);
return new ViewHolder(itemView);
}
@Override
public void onBindViewHolder(ViewHolder holder, final int position)
{
//1.根据位置得到对应的Bean对象
final GoodsBean goodsBean = datas.get(position);
//2.设置数据
holder.cb_gov.setChecked(goodsBean.isSelected());
Glide.with(mContext).load(Constants.BASE_URL_IMAGE + goodsBean.getFigure()).into(holder.iv_gov);
holder.tv_desc_gov.setText(goodsBean.getName());
holder.tv_price_gov.setText("￥" + goodsBean.getCover_price());
holder.ddSubView.setValue(goodsBean.getNumber());
holder.ddSubView.setMinValue(1);
holder.ddSubView.setMaxValue(8);
//设置商品数量的变化
holder.ddSubView.setOnNumberChangeListener(new AddSubView.OnNumberChangeListener()
{
@Override
public void onNumberChange(int value)
{
//1.当前列表内存中
goodsBean.setNumber(value);
//2本地要更新
CartStorage.getInstance().updateData(goodsBean);
//3.刷新适配器
notifyItemChanged(position);
//4.再次计算总价格
showTotalPrice();
}
});
}
@Override
public int getItemCount()
{
return datas.size();
}
public void deleteData()
{
if (datas != null && datas.size() > 0)
{
for (int i = 0; i < datas.size(); i++)
{
//删除选中的
GoodsBean goodsBean = datas.get(i);
if (goodsBean.isSelected())
{
//内存-把移除
datas.remove(goodsBean);
//保持到本地
CartStorage.getInstance().deleteData(goodsBean);
//刷新
notifyItemRemoved(i);
i--;
}
}
}
}
class ViewHolder extends RecyclerView.ViewHolder
{
private CheckBox cb_gov;
private ImageView iv_gov;
private TextView tv_desc_gov;
private TextView tv_price_gov;
private AddSubView ddSubView;
public ViewHolder(View itemView)
{
super(itemView);
cb_gov = (CheckBox) itemView.findViewById(R.id.cb_gov);
iv_gov = (ImageView) itemView.findViewById(R.id.iv_gov);
tv_desc_gov = (TextView) itemView.findViewById(R.id.tv_desc_gov);
tv_price_gov = (TextView) itemView.findViewById(R.id.tv_price_gov);
ddSubView = (AddSubView) itemView.findViewById(R.id.numberAddSubView);
//设置item的点击事件
itemView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
if (onItemClickListener != null)
{
onItemClickListener.onItemClick(getLayoutPosition());
}
}
});
}
}
/**
* 点击item的监听者
*/
public interface OnItemClickListener
{
/**
* 当点击某条的时候被回调
*
* @param position
*/
public void onItemClick(int position);
}
private OnItemClickListener onItemClickListener;
/**
* 设置item的监听
*
* @param onItemClickListener
*/
public void setOnItemClickListener(OnItemClickListener onItemClickListener)
{
this.onItemClickListener = onItemClickListener;
}
}
集成支付宝
1. 常见的支付厂商简介
**支付宝**:阿里公司,支付宝使用比较多.
**微信**:腾讯公司,也是越来越多.
易付宝:易付宝是苏宁云商旗下的一家独立的第三方支付公司
易宝支付：易宝支付
财付通:腾讯公司
**银联**:不属于某一个公司
百度钱包:百度
支付宝钱包:阿里的.
快钱:
ping++:整合了很多的支付平台
万普广告平台
2. 申请签约支付宝移动支付
1.在支付宝网站注册企业账号
2.个人账号暂时不支持
3.申请签约支付宝移动支付
3. 运行支付宝 SDK 提供的示例程序
1.下载 sdk 地址
https://open.alipay.com/platform/home.htm
2.参照文档地址
https://doc.open.alipay.com/doc2/detail?treeId=59&articleId=103563&docType=1
3.在签约管理这里找到 pidkey 为：
2088911876712776
4.签名机制
https://doc.open.alipay.com/doc2/detailtreeId=58&articleId=103242&docType=1
5.开发者将私钥保留，将公钥提交给支付宝网关，用于信息加密及解密
6.生成 key
4. 集成到自己的应用中
5. 支付整个流程
1. 手机客户端集成支付宝SDK，发起订单请求，服务器记录订单信息
2. 服务器集成支付宝服务SDK，响应订单请求
3. 请求成功后回来后，立刻携带相关订单信息向支付宝服务器发起支付请求
4. 支付成功或者失败都会记录到服务器上，且该过程有肯能会延迟
5. 服务器同时将支付成功或者失败的结果回调给客户端
6. 成功询问服务器是否支付成功
