如何将选定的父级“子元素”从一个自定义适配器传递到另一个新的自定义适配器？
我在可扩展的自定义适配器中有一个带复选框和子元素的自定义适配器，当父项 - 对于我的案例Orders被选中/选中时，Orders被传递给一个没有复选框的新自定义适配器。我可以通过父级即Orders但我无法传递子元素，即ORDERS的子项目。所以我需要将所选订单的子元素传递给新的适配器视图。
我的代码：
try {
System.out.println("READ/PARSING JSON");
serverStatus = jobj.getString("SERVER_STATUS");
System.out.println("serverStatusObj: "+serverStatus);
JSONArray serverResponseArray2=jobj.getJSONArray("SERVER_RESPONSE");
for (int m = 0; m < serverResponseArray2.length(); m++) {
String SERVER_RESPONSE = serverResponseArray2.getString(m);
JSONObject Open_Orders_obj = new JSONObject(SERVER_RESPONSE);
mMAX_ORDERS_TOBEPICKED = Open_Orders_obj.getInt("MAX_ORDERS_TOBEPICKED");
JSONArray ja = Open_Orders_obj.getJSONArray("ORDER_ITEM_DETAILS");
order_Item_Values.clear();
mOpenOrders = new ArrayList<OpenOrders>(ja.length());
for(int i=0; i<ja.length(); i++){
String ORDER_ITEM_DETAILS = ja.getString(i);
jobj1 = new JSONObject(ORDER_ITEM_DETAILS);
String ORDERNAME = jobj1.getString("ORDERNAME");
String ORDERID = jobj1.getString("ORDERID");
final OpenOrders parent = new OpenOrders();
parent.setOrderName(ORDERNAME+ " "+ i);
parent.setOrderID(ORDERID);
parent.setChecked((i % 2) == 0);
OpenOrders openOrderObj= new OpenOrders(ORDERID,ORDERNAME);
JSONArray Order_Items = jobj1.getJSONArray("ITEMS");
itemList =new ArrayList<String>();
parent.setChildren(new ArrayList<Child>());
for(int k=0; k<Order_Items.length(); k++){
String ITEMS = Order_Items.getString(k);
System.out.println(ITEMS);
ItemObj = new JSONObject(ITEMS);
String ITEMNUMBER = ItemObj.getString("ITEMNUMBER");
String ITEMNAME = ItemObj.getString("ITEMNAME");
itemList.add(ITEMNAME);//This adds item name's to the ArrayList named 'itemList'
openOrderObj.setItemID(ITEMNUMBER);
openOrderObj.setItemName(ITEMNAME);
System.out.println("item name"+ITEMNAME);
final Child child = new Child();
child.setName(ITEMNAME + i + "/" + k);
parent.getChildren().add(child);
}
mOpenOrders.add(parent);
}
}
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} //***End code to read json content from text file saved in device
enter code here
我的开放式课程：
import java.io.Serializable;
import java.util.ArrayList;
import com.kits.ddf_order_model.Child;
public class OpenOrders implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private String orderID;
private String orderName;
private boolean selected;
private boolean checked;
private ArrayList<Child> children;
private String itemID;
private String itemName;
public OpenOrders(String orderID, String orderName) {
super();
this.orderID = orderID;
this.orderName = orderName;
}
public OpenOrders() {
// TODO Auto-generated constructor stub
}
public String getOrderID() {
return orderID;
}
public void setOrderID(String orderID) {
this.orderID = orderID;
}
public String getOrderName() {
return orderName;
}
public void setOrderName(String orderName) {
this.orderName = orderName;
}
@Override
public String toString() {
return this.orderName;
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean selected) {
this.selected = selected;
}
public ArrayList<Child> getChildren()
{
return children;
}
public void setChildren(ArrayList<Child> children)
{
this.children = children;
}
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
public String getItemID() {
return itemID;
}
public void setItemID(String itemID) {
this.itemID = itemID;
}
public String getItemName() {
return itemName;
}
public void setItemName(String itemName) {
this.itemName = itemName;
}
}
我的孩子班：
public class Child
{
private String name;
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
}
所以当点击按钮时，我所做的是：
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(mAdapter != null) {
int isSelectedOrderNumber=0;//This Variable will check with the parameter passed from server
mOpenOrdersSelected = new ArrayList<OpenOrders>();
StringBuffer sb = new StringBuffer();
Iterator<OpenOrders> it = mOpenOrders.iterator();
while(it.hasNext())
{
OpenOrders objOpenOrders = it.next();
//Do something with objOpenOrders
if (objOpenOrders.isChecked()) {
isSelectedOrderNumber++;
// mOpenOrdersSelected.add(new OpenOrders(objOpenOrders.getOrderID(),objOpenOrders.getOrderName()));
sb.append(objOpenOrders.getOrderID());
sb.append(",");
final OpenOrders parent = new OpenOrders(objOpenOrders.getOrderID(),objOpenOrders.getOrderName());
ArrayList<Child> mOpenOrderItems=objOpenOrders.getChildren();
Iterator<Child> i = mOpenOrderItems.iterator();
mOpenOrdersSelected.add(parent);
}
}
//Below Condition Will Check the selected Items With parameter passed "mMAX_ORDERS_TOBEPICKED"
if(isSelectedOrderNumber<1){
ShowErrorDialog("Please Select atleast One order");
return;
}
if(isSelectedOrderNumber>mMAX_ORDERS_TOBEPICKED){
ShowErrorDialog(" Select Maximum of "+mMAX_ORDERS_TOBEPICKED+ " Orders only to process");
return;
}
//Below code is to Call again the adapter and Displays the Order's which are checked/selected.
expListView = (ExpandableListView) findViewById(R.id.expandable_order_item_list);
ExpandableOrderSelectedListAdapter mOrderSelectedAdapter = new ExpandableOrderSelectedListAdapter(SelectLocationActivity.this,mOpenOrdersSelected);
expListView.setAdapter(mOrderSelectedAdapter);
expListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
//nothing to do , as Null Pointer exception Occurred ,to avoid that I just used this "setOnItemClickListener"
}
});
button.setVisibility(View.GONE);//Hide the Initial Button in the view
fullfilment_btn.setVisibility(View.VISIBLE);//Displays the confirm Button
fullfilment_btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
});
}
}
});
所以在这部分代码中我在迭代子元素时会出错。
任何帮助都会很棒
1 个答案:
答案 0 :(得分：0)
我通过for循环解决了这个问题，它会将子项添加到新的“mOpenOrderSelected”变量中：
if (objOpenOrders.isChecked()) {
isSelectedOrderNumber++;
sb.append(objOpenOrders.getOrderID());
sb.append(",");
final OpenOrders parent = new OpenOrders(objOpenOrders.getOrderID(),objOpenOrders.getOrderName());
ArrayList<Child> mOpenOrderItems=objOpenOrders.getChildren();
parent.setChildren(new ArrayList<Child>());
for(int k=0; k<mOpenOrderItems.size(); k++){
final Child child = (Child) mOpenOrderItems.get(k);
Log.d("ChildItemsname", "ChildItemsname:"+child.getName());
parent.getChildren().add(child);
}
mOpenOrdersSelected.add(parent);
}
所以新的按钮点击代码将是这样的：
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(mAdapter != null) {
int isSelectedOrderNumber=0;//This Variable will check with the parameter passed from server
mOpenOrdersSelected = new ArrayList<OpenOrders>();
StringBuffer sb = new StringBuffer();
Iterator<OpenOrders> it = mOpenOrders.iterator();
while(it.hasNext())
{
OpenOrders objOpenOrders = it.next();
//Do something with objOpenOrders
if (objOpenOrders.isChecked()) {
isSelectedOrderNumber++;
sb.append(objOpenOrders.getOrderID());
sb.append(",");
final OpenOrders parent = new OpenOrders(objOpenOrders.getOrderID(),objOpenOrders.getOrderName());
ArrayList<Child> mOpenOrderItems=objOpenOrders.getChildren();
parent.setChildren(new ArrayList<Child>());
for(int k=0; k<mOpenOrderItems.size(); k++){
final Child child = (Child) mOpenOrderItems.get(k);
Log.d("ChildItemsname", "ChildItemsname:"+child.getName());
parent.getChildren().add(child);
}
mOpenOrdersSelected.add(parent);
}
}
//Below Condition Will Check the selected Items With parameter passed "mMAX_ORDERS_TOBEPICKED"
if(isSelectedOrderNumber<1){
ShowErrorDialog("Please Select atleast One order");
return;
}
if(isSelectedOrderNumber>mMAX_ORDERS_TOBEPICKED){
ShowErrorDialog(" Select Maximum of "+mMAX_ORDERS_TOBEPICKED+ " Orders only to process");
return;
}
//Below code is to Call again the adapter and Displays the Order's which are checked/selected.
expListView = (ExpandableListView) findViewById(R.id.expandable_order_item_list);
ExpandableOrderSelectedListAdapter mOrderSelectedAdapter = new ExpandableOrderSelectedListAdapter(SelectLocationActivity.this,mOpenOrdersSelected);
expListView.setAdapter(mOrderSelectedAdapter);
expListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
//nothing to do , as Null Pointer exception Occurred ,to avoid that I just used this "setOnItemClickListener"
}
});
button.setVisibility(View.GONE);//Hide the Initial Button in the view
fullfilment_btn.setVisibility(View.VISIBLE);//Displays the confirm Button
fullfilment_btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
});
}
}
});
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