使用了RecyclerView嵌套RecyclerView的方案。

购物车的第一个界面为RecyclerView，每个Item里面包含一个店铺。在Item中使用RecyclerView包含店铺和店铺的多个商品。

实现思路：

使用接口回调将第二个adapter的商品选择的监听事件回调给第一个adapter后再在第一个adapter中回调给MainActivity。

使用接口回调将第一个adapter的商品选择的监听事件回调给MainActivity。

在MainActivity中处理第一个adapter和第二个adapter的事件监听。

MainActivity：

public class MainActivity extends AppCompatActivity { private RecyclerView recyclerView; private CheckBox checkBox; private recyclerAdapter adapter; private RecyclerView.LayoutManager manager; private List<bean> list; private List<cbean> cbeanList,cbeanListcp; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); recyclerView = (RecyclerView) findViewById(R.id.recyclerview); checkBox = (CheckBox) findViewById(R.id.shop_checkbox); list = new ArrayList<>(); //第一个店铺的数据 cbeanList = new ArrayList<>(); cbean c = new cbean(); c.setText("商品"); c.setIscheck(false); cbean c1 = new cbean(); c1.setText("商品1"); c1.setIscheck(false); cbeanList.add(c); cbeanList.add(c1); bean b = new bean(); b.setIscheck(false); b.setText("店名"); b.setList(cbeanList); //第二个店铺的数据 cbeanListcp = new ArrayList<>(); cbean c2 = new cbean(); c2.setText("商品2"); c2.setIscheck(false); cbean c3 = new cbean(); c3.setText("商品3"); c3.setIscheck(false); cbeanListcp.add(c2); cbeanListcp.add(c3); bean b1 = new bean(); b1.setIscheck(false); b1.setText("店名1"); b1.setList(cbeanListcp); //不能添加有重复变量的数据 list.add(b); list.add(b1); manager = new LinearLayoutManager(this); recyclerView.setLayoutManager(manager); //优化性能 recyclerView.setHasFixedSize(true); adapter = new recyclerAdapter(list); recyclerView.setAdapter(adapter); //全选CheckBox监听 checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked){ for (int i = 0;i < list.size();i++){ //选择店铺 if (!list.get(i).ischeck()){ list.get(i).setIscheck(true); } for (int j = 0;j < list.get(i).getList().size();j++){ //选择店铺的商品 if (!list.get(i).getList().get(j).ischeck()){ list.get(i).getList().get(j).setIscheck(true); } } } }else { //只有当点击全不选时才执行 // 解决点击取消选择店铺或商品时， // 全选按钮取消选择状态，不会不变成全不选 if (allSelect() == list.size()){ for (int i = 0;i < list.size();i++){ if (list.get(i).ischeck()){ list.get(i).setIscheck(false); } for (int j = 0;j < list.get(i).getList().size();j++){ if (list.get(i).getList().get(j).ischeck()){ list.get(i).getList().get(j).setIscheck(false); } } } } } //更新 UpdateRecyclerView(); } }); adapter.setCallBack(new recyclerAdapter.allCheck() { @Override public void OnCheckListener(boolean isSelected, int position) { //保存店铺点击状态 list.get(position).setIscheck(isSelected); //通知全选CheckBox的选择状态 if (allSelect() == list.size()){ checkBox.setChecked(true); }else { checkBox.setChecked(false); } if (isSelected){ for (int i = 0;i < list.get(position).getList().size();i++){ if (!list.get(position).getList().get(i).ischeck()){ list.get(position).getList().get(i).setIscheck(true); } } }else { // 解决点击取消选择商品时， // 店铺全选按钮取消选择状态，不会不变成全不选 if (allChildSelect(position) == list.get(position).getList().size()){ for (int i = 0;i < list.get(position).getList().size();i++){ if (list.get(position).getList().get(i).ischeck()){ list.get(position).getList().get(i).setIscheck(false); } } } } //更新 UpdateRecyclerView(); } @Override public void OnItemCheckListener(boolean isSelected, int parentposition, int chaildposition) { //保存商品点击状态 list.get(parentposition).getList().get(chaildposition).setIscheck(isSelected); //通知店铺选择的状态 if (allChildSelect(parentposition) == list.get(parentposition).getList().size()){ list.get(parentposition).setIscheck(true); }else { list.get(parentposition).setIscheck(false); } UpdateRecyclerView(); } }); } /* *解决Recycleyview刷新报错问题 */ private void UpdateRecyclerView() { Handler handler = new Handler(); final Runnable r = new Runnable() { public void run() { adapter.notifyDataSetChanged(); } }; handler.post(r); } //计算店铺的选择数量 private int allSelect(){ int sum = 0; for (int i = 0; i < list.size(); i++) { if (list.get(i).ischeck()){ sum++; } } System.out.println(sum); return sum; } //计算每个店铺商品的选择数量 private int allChildSelect(int position){ int sum = 0; for (int i = 0; i < list.get(position).getList().size(); i++) { if (list.get(position).getList().get(i).ischeck()){ sum++; System.out.println(position+":"+i+":"+list.get(position).getList().get(i).ischeck()); } } return sum; } }

第一个Adapter：

public class recyclerAdapter extends RecyclerView.Adapter<recyclerAdapter.MyHolder> { private List<bean> list; public recyclerAdapter(List<bean> list){ this.list = list; } public static class MyHolder extends RecyclerView.ViewHolder{ private RecyclerView recyclerView; private TextView textView; private CheckBox checkBox; private recyclerAdapter1 adapter; private RecyclerView.LayoutManager manager; public CheckBox getCheckBox() { return checkBox; } public RecyclerView getRecyclerView() { return recyclerView; } public TextView getTextView() { return textView; } public MyHolder(View itemView) { super(itemView); recyclerView = (RecyclerView) itemView.findViewById(R.id.list_items); textView = (TextView) itemView.findViewById(R.id.tv_name); checkBox = (CheckBox) itemView.findViewById(R.id.checkbox0); manager = new LinearLayoutManager(itemView.getContext()); recyclerView.setLayoutManager(manager); } } @Override public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.shop_item,null); MyHolder holder = new MyHolder(view); return holder; } @Override public void onBindViewHolder(final MyHolder holder, final int position) { holder.adapter = new recyclerAdapter1(list.get(position).getList()); holder.recyclerView.setAdapter(holder.adapter); holder.getTextView().setText(list.get(position).getText()); holder.getCheckBox().setChecked(list.get(position).ischeck()); holder.getCheckBox().setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { //将店铺的checkbox的点击变化事件进行回调 if (mCallBack!=null){ mCallBack.OnCheckListener(isChecked,position); } } }); //实现第二层RecyclerView的回调接口 holder.adapter.setCallBack(new recyclerAdapter1.allCheck() { @Override public void OnCheckListener(boolean isChecked, int childpostion) { //将店铺商品的checkbox的点击变化事件进行回调 if (mCallBack!=null){ mCallBack.OnItemCheckListener(isChecked,position,childpostion); } } }); holder.itemView.setTag(list.get(position)); } @Override public int getItemCount() { return list.size(); } private allCheck mCallBack; public void setCallBack(allCheck callBack) { mCallBack = callBack; } public interface allCheck{ //回调函数 将店铺的checkbox的点击变化事件进行回调 public void OnCheckListener(boolean isSelected,int position); //回调函数 将店铺商品的checkbox的点击变化事件进行回调 public void OnItemCheckListener(boolean isSelected,int parentposition,int chaildposition); } }

第二个Adapter:

public class recyclerAdapter1 extends RecyclerView.Adapter<recyclerAdapter1.MyHolder> { private List<cbean> cbeanList, cbeanList1; public recyclerAdapter1(List<cbean> cbeanList) { this.cbeanList = cbeanList; cbeanList1 = cbeanList; } public static class MyHolder extends RecyclerView.ViewHolder { private TextView textView; private CheckBox checkBox; public TextView getTextView() { return textView; } public CheckBox getCheckBox() { return checkBox; } public MyHolder(View itemView) { super(itemView); textView = (TextView) itemView.findViewById(R.id.checkbox_tv); checkBox = (CheckBox) itemView.findViewById(R.id.checkbox1); } } @Override public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.check_item, null); MyHolder holder = new MyHolder(view); return holder; } @Override public void onBindViewHolder(final MyHolder holder, final int position) { holder.getTextView().setText(cbeanList.get(position).getText()); holder.getCheckBox().setChecked(cbeanList.get(position).ischeck()); holder.getCheckBox().setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { //将商品的checkbox的点击变化事件进行回调给第一个Recyclerview if (mCallBack != null) { mCallBack.OnCheckListener(isChecked, position); } } }); holder.itemView.setId(position); } @Override public int getItemCount() { return cbeanList.size(); } private allCheck mCallBack; public void setCallBack(allCheck callBack) { mCallBack = callBack; } public interface allCheck { //回调函数 将店铺商品的checkbox的点击变化事件进行回调 public void OnCheckListener(boolean isChecked, int childpostion); } }

实体类保存数据和选择状态：

public class bean { private boolean ischeck; private String text; private List<cbean> list; public boolean ischeck() { return ischeck; } public void setIscheck(boolean ischeck) { this.ischeck = ischeck; } public String getText() { return text; } public void setText(String text) { this.text = text; } public List<cbean> getList() { return list; } public void setList(List<cbean> list) { this.list = list; } } public class cbean { private boolean ischeck; private String text; public boolean ischeck() { return ischeck; } public void setIscheck(boolean ischeck) { this.ischeck = ischeck; } public String getText() { return text; } public void setText(String text) { this.text = text; } }

布局文件：activity_main.xml

<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.cuboo.myapplication.MainActivity"> <android.support.v7.widget.RecyclerView android:id="@+id/recyclerview" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1"> </android.support.v7.widget.RecyclerView> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <CheckBox android:id="@+id/shop_checkbox" android:layout_marginLeft="12dp" android:layout_width="24dp" android:layout_height="24dp" android:layout_gravity="left|center" android:padding="12dp" android:gravity="center" /> </LinearLayout> </LinearLayout>

shop_item.xml:

<"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="match_parent"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <CheckBox android:id="@+id/checkbox0" android:layout_width="24dp" android:layout_height="24dp" /> <TextView android:id="@+id/tv_name" android:text="店名" android:gravity="center" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="0.5dp" android:background="@color/colorAccent"/> <android.support.v7.widget.RecyclerView android:id="@+id/list_items" android:layout_width="match_parent" android:layout_height="wrap_content"> </android.support.v7.widget.RecyclerView> <View android:layout_width="match_parent" android:layout_height="48dp" android:background="@color/colorAccent"/> </LinearLayout>

check_item:

<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="60dp"> <CheckBox android:layout_gravity="center" android:id="@+id/checkbox1" android:layout_width="24dp" android:layout_height="24dp" /> <TextView android:id="@+id/checkbox_tv" android:text="222" android:layout_weight="1" android:layout_gravity="center" android:gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout>

简单的效果图：

以上所述是小编给大家介绍的Android中实现淘宝购物车RecyclerView或LIstView的嵌套选择的逻辑，希望对大家有所帮助，如果大家有任何疑问请给我们留言，小编会及时回复大家的。在此也非常感谢大家对查字典教程网的支持！