我有2个asyncTasks。一个用于GetCheckLists另一个用于GetCheckListItems。 在CheckList类中，它具有checkListId，Title等，以及checkListItems的arrayList。
首先，我使用GetCheckListAsyncTask获取所有检查列表。现在对于每个checkList，我调用GetCheckListItemsAsync任务来获取所有checkListItems。
现在，GetCheckListItemsAsyncTask的onPostExecute方法我想设置checkListItemArrayList。
如何确保将checkListItemArrayList添加到checkList项目的对象？
CheckListActivity：
public class CheckListActivity extends AppCompatActivity implements CheckListAdapter.OnItemClickListener{
private ProgressDialog progressDialog;
private RecyclerView recyclerView;
private ArrayList<CheckList> checkLists = new ArrayList<>();
private CheckList mCheckList;
private ArrayList<CheckListItem> itemList;
private ArrayList<CheckList> checkListArrayList;
private CheckListAdapter mAdapter;
JSONArray checkListsItemArray,checkListArray;
public int iterationCount = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_check_list);
checkListArrayList = new ArrayList<>();
mEventId = mIntent.getStringExtra("eventId");
mCheckList = new CheckList();
progressDialog = new ProgressDialog(CheckListActivity.this);
recyclerView = (RecyclerView)findViewById(R.id.recycler_view);
mAdapter = new CheckListAdapter(checkListArrayList,CheckListActivity.this,CheckListActivity.this);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(mAdapter);
GetCheckListAsyncTask getCheckListAsyncTask = new GetCheckListAsyncTask();
getCheckListAsyncTask.execute(mEventId);
}
}
@Override
public class GetCheckListsItemAsyncTask extends AsyncTask<String, Void, JSONObject> {
private String api;
private JSONObject jsonParams;
public GetCheckListsItemAsyncTask(){}
@Override
protected JSONObject doInBackground(String... params) {
try {
api = getResources().getString(R.string.server_url) + "api/checklist_items/getChecklistItems.php";
jsonParams = new JSONObject();
String checklistId = params[0]; // params[0] is username
jsonParams.put("checklistId", checklistId);
ServerRequest request = new ServerRequest(api, jsonParams);
return request.sendRequest();
} catch(JSONException je) {
return Excpetion2JSON.getJSON(je);
}
} //end of doInBackground
@Override
protected void onPostExecute(JSONObject response) {
super.onPostExecute(response);
Log.e("ServerResponse", response.toString());
try {
int result = response.getInt("result");
String message = response.getString("message");
if (result == 1) {
Toast.makeText(CheckListActivity.this, message, Toast.LENGTH_LONG).show();
//code after getting profile details goes here
checkListsItemArray = response.getJSONArray("checklistItems");
for (int i = 0; i < checkListsItemArray.length(); i++) {
int pendingTasks = 0,completedTasks = 0;
itemList = new ArrayList<>();
CheckListItem checkListItem = new CheckListItem();
JSONObject subObject = checkListsItemArray.getJSONObject(i);
String checkListItemName = subObject.getString("text");//name of the attribute in response
String checkListItemBudget = subObject.getString("budget");//name of the attribute in response
String checkListItemTimedate = subObject.getString("time_due");
String checkListItemReminder = subObject.getString("reminder");
String checkListItemId = subObject.getString("checklistItemId");
String checkListItemStatus = subObject.getString("status");
if (checkListItemStatus.equals("1")) {
completedTasks++;
}
if (checkListItemStatus.equals("0")) {
pendingTasks++;
}
checkListItem.setTitle(checkListItemName);
checkListItem.setBudget(checkListItemBudget);
checkListItem.setDateTime(checkListItemTimedate);
checkListItem.setReminder(checkListItemReminder);
checkListItem.setCheckListItemId(checkListItemId);
checkListItem.setStatus(checkListItemStatus);
checkListItem.setPendingItem(pendingTasks);
checkListItem.setCompletedItem(completedTasks);
itemList.add(checkListItem);//adding string to arraylist
}
if(checkListArrayList.size() < iterationCount) {
iterationCount++;
String checkListId =
checkListArrayList.get(iterationCount).getCheckListId();
CheckList checkList1 = checkListArrayList.get(iterationCount);
checkList1.setCheckListItemArrayList(itemList);
}
mAdapter.notifyDataSetChanged();
}
else {
Toast.makeText(CheckListActivity.this, message, Toast.LENGTH_LONG).show();
//code after failed getting profile details goes here
}
} catch(JSONException je) {
je.printStackTrace();
Toast.makeText(CheckListActivity.this, je.getMessage(), Toast.LENGTH_LONG).show();
}
} //end of onPostExecute
}
public class GetCheckListAsyncTask extends AsyncTask<String, Void, JSONObject> {
private String api;
private JSONObject jsonParams;
public GetCheckListAsyncTask(){}
@Override
protected JSONObject doInBackground(String... params) {
try {
api = getResources().getString(R.string.server_url) + "api/checklist/getChecklists.php";
jsonParams = new JSONObject();
String eventId = params[0]; // params[0] is username
jsonParams.put("eventId", eventId);
ServerRequest request = new ServerRequest(api, jsonParams);
return request.sendRequest();
} catch(JSONException je) {
return Excpetion2JSON.getJSON(je);
}
} //end of doInBackground
@Override
protected void onPostExecute(JSONObject response) {
super.onPostExecute(response);
//Log.e("ServerResponse", response.toString());
try {
int result = response.getInt("result");
String message = response.getString("message");
if (result == 1 ) {
Toast.makeText(CheckListActivity.this, message, Toast.LENGTH_LONG).show();
//code after getting profile details goes here
checkListArray = response.getJSONArray("checklists");
for (int i = 0; i < checkListArray.length(); i++) {
CheckList checkList = new CheckList();
JSONObject subObject = checkListArray.getJSONObject(i);
String checkListName = subObject.getString("checklist");//name of the attribute in response
String checkListBudget = subObject.getString("budget");//name of the attribute in response
String checkListIcon = subObject.getString("icon");
String checkListId = subObject.getString("checklistId");
checkList.setCheckListTitle(checkListName);
checkList.setBudget(checkListBudget);
checkList.setImageIcon(checkListIcon);
checkList.setCheckListId(checkListId);
checkListArrayList.add(checkList);
iterationCount++;
new GetCheckListsItemAsyncTask().execute(checkListId);
mAdapter.notifyDataSetChanged();
}
if ((progressDialog != null) && progressDialog.isShowing()) {
progressDialog.dismiss();
}
} else {
Toast.makeText(CheckListActivity.this, message, Toast.LENGTH_LONG).show();
//code after failed getting profile details goes here
if ((progressDialog != null) && progressDialog.isShowing()) {
progressDialog.dismiss();
}
}
} catch(JSONException je) {
je.printStackTrace();
Toast.makeText(CheckListActivity.this, je.getMessage(), Toast.LENGTH_LONG).show();
}
} //end of onPostExecute
@Override
protected void onPreExecute(){
super.onPreExecute();
progressDialog.setMessage("Loading...");
progressDialog.show();
}
}
}
如何将CheckListItemsArrayList顺序设置为checkListArrayList的对象？请帮忙。谢谢..
答案 0 :(得分：0)
您需要详细说明您的问题。这非常令人困惑。
但我认为你想要在AsyncTask类中添加项目。
您可以使用构造方法。
GetCheckListAsyncTask getCheckListAsyncTask = new GetCheckListAsyncTask(checkListsItemArray); getCheckListAsyncTask.execute(mEventId);
AsyncTask 只需添加：
JSONArray m_checkListsItemArray; public GetCheckListsItemAsyncTask(JSONArray checkListsItemArray){ m_checkListsItemArray = checkListsItemArray; //Do something here with checkListsItemArray; }
在AsycTask类的任何位置使用m_checkListsItemArray。
答案 1 :(得分：0)
每次启动任务时，您都无法控制结束。任务以异步方式运行，因此它们不会以您启动它们的顺序结束。也许有一个字段级Array或ArrayList，每次任务结束时都会添加结果，然后当每个任务结束时，你都可以使用数组结果。