没有从捆绑包中获取哈希图 - Android
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【中文标题】没有从捆绑包中获取哈希图 - Android【英文标题】：Not getting hashmap from bundle - Android 【发布时间】：2016-04-03 08:50:00 【问题描述】：我想从 AsyncTask 中获取通过 Bundle 传递的 HashMap。但我得到 NullPointerException。
流程如下...
FragmentMainActivity -> TableScreenSectionwiseActivity -> GetSectionsAsync
HashMap is passed from GetSectionsAsync to TableScreenSectionwiseActivity through Bundle.
注意：FragmentMainActivity 是 FragmentActivity。TableScreenSectionwiseActivity 是 Fragment。GetSectionsAsync 是 AsyncTask。 H3>
我已经尝试过，如下所示。
我得到的错误...
Error Image
TableScreenSectionwiseActivity.java
package com.malaka.ui;
import java.util.ArrayList;
import java.util.HashMap;
import adapters.table_section_adapter;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.malaka.R;
import com.malaka.helper.ActionItem;
import com.malaka.helper.GetSectionsGetterSetter;
import com.malaka.helper.Logout;
import com.malaka.helper.PopupWindows;
import com.malaka.helper.QuickAction;
import com.malaka.helper.QuickActionLocation;
import com.malaka.helper.ReplaceFragment;
import com.malaka.helper.async.GetSectionsAsync;
import com.malaka.helper.async.TableStatusAsync;
import com.malaka.utils.PreferenceUtils;
public class TableScreenSectionwiseActivity extends Fragment implements
OnItemClickListener
final static String TAG = "TableScreenSectionwiseActivity";
private static final int ID_TABLE = 1;
private static final int ID_TASK = 2;
private static final int ID_MANAGER = 3;
private static final int ID_RECIPE = 4;
private static final int ID_INSTRUCTION = 5;
private static final int ID_SEARCH = 6;
private static final int ID_HELP = 7;
private static final int ID_SETTING = 8;
private static final int ID_LOGOUT = 9;
private static final int ID_KP = 10;
private static final int ID_BANER = 20;
private static final int ID_CITY = 30;
String[] values = new String[] "1", "2" ;
public static FragmentActivity activity;
RelativeLayout rl;
static PreferenceUtils pref;
QuickAction quickAction;
QuickActionLocation quickActionLocation;
HashMap<String, ArrayList<String>> map1;
ArrayList<String> ids, names;
ListView section_list;
TextView version, malaka;
ImageView refresh;
Animation rotation;
private TextView mDropdownTitle;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
View view = inflater.inflate(R.layout.table_screen_sectionwise,
container, false);
init(view);
return view;
private void init(View view)
activity = getActivity();
pref = new PreferenceUtils(getActivity());
malaka = (TextView) view
.findViewById(R.id.txt_malaka_title_table_sectionwise);
malaka.setText(pref.getLocation());
if (!pref.getSectionStatus())
GetSectionsAsync getSectionsAsync = new GetSectionsAsync(
getActivity());
HashMap<String, String> map = new HashMap<String, String>();
map.put("Location_Name", pref.getLocation());
getSectionsAsync.execute(map);
Bundle bundle = new Bundle();
Log.e("Bundle Size: ", bundle.size() + "");
map1 = (HashMap<String, ArrayList<String>>) getArguments()
.getSerializable("SECTIONS_HASHMAP");
GetSectionsGetterSetter.setData(map1);
ids = map1.get("ID_LIST");
names = map1.get("NAME_LIST");
for (int i = 0; i < names.size(); i++)
Log.e("Names: ", names.get(i));
section_list = (ListView) view
.findViewById(R.id.section_name_list_view);
table_section_adapter adapter = new table_section_adapter(
activity.getApplicationContext(), values);
section_list.setAdapter(adapter);
section_list.setOnItemClickListener(this);
rl = (RelativeLayout) view.findViewById(R.id.ll_location_sectionwise);
if (pref.getUserRole())
rl.setVisibility(View.VISIBLE);
else
rl.setVisibility(View.GONE);
rl.setOnClickListener(new OnClickListener()
@Override
public void onClick(View arg0)
quickActionLocation.show(arg0);
);
version = (TextView) view.findViewById(R.id.table_version_sectionwise);
version.setText(pref.getVersion());
rotation = AnimationUtils.loadAnimation(getActivity(),
R.anim.refresh_dialog);
refresh = (ImageView) view
.findViewById(R.id.img_refresh_table_sectionwise);
refresh.setOnClickListener(new OnClickListener()
@Override
public void onClick(View arg0)
refresh.startAnimation(rotation);
TableStatusAsync Async = new TableStatusAsync(getActivity());
HashMap<String, String> map = new HashMap<String, String>();
map.put("UserId", pref.getUserId());
map.put("SectionId", "0");
map.put("Location", pref.getLocation());
Async.execute(map);
);
ActionItem tableItem = new ActionItem(ID_TABLE, "Table Status");
ActionItem taskItem = new ActionItem(ID_TASK, "My Tasks");
ActionItem managerItem = new ActionItem(ID_MANAGER, "Manager");
ActionItem recipeItem = new ActionItem(ID_RECIPE, "Recipes");
ActionItem instItem = new ActionItem(ID_INSTRUCTION, "Instructions");
ActionItem searchItem = new ActionItem(ID_SEARCH, "Search");
ActionItem helpItem = new ActionItem(ID_HELP, "Help");
ActionItem settingItem = new ActionItem(ID_SETTING, "Settings");
ActionItem logoutItem = new ActionItem(ID_LOGOUT, "Logout");
ActionItem kpItem = new ActionItem(ID_KP, "Koregaon Park");
ActionItem cityItem = new ActionItem(ID_CITY, "Phoneix Market");
ActionItem banerItem = new ActionItem(ID_BANER, "Baner");
quickActionLocation = new QuickActionLocation(getActivity(),
QuickActionLocation.VERTICAL);
quickActionLocation.addActionItem(kpItem, Color.WHITE);
quickActionLocation.addActionItem(cityItem, Color.WHITE);
quickActionLocation.addActionItem(banerItem, Color.WHITE);
// use setSticky(true) to disable QuickAction dialog being dismissed
// after an item is clicked
// tableItem.setSticky(true);
// create QuickAction. Use QuickAction.VERTICAL or
// QuickAction.HORIZONTAL param to define layout
// orientation
quickAction = new QuickAction(getActivity(), QuickAction.VERTICAL);
// add action items into QuickAction
quickAction.addActionItem(tableItem, Color.WHITE);
quickAction.addActionItem(taskItem, Color.parseColor("#F2A523"));
if (pref.getUserRole())
quickAction.addActionItem(managerItem, Color.parseColor("#F2A523"));
if (pref.getRecipeScreenStatus())
quickAction.addActionItem(recipeItem, Color.parseColor("#F2A523"));
quickAction.addActionItem(instItem, Color.parseColor("#F2A523"));
quickAction.addActionItem(searchItem, Color.parseColor("#F2A523"));
quickAction.addActionItem(helpItem, Color.parseColor("#F2A523"));
quickAction.addActionItem(settingItem, Color.parseColor("#F2A523"));
quickAction.addActionItem(logoutItem, Color.parseColor("#F2A523"));
// Set listener for action item clicked
quickAction
.setOnActionItemClickListener(new QuickAction.OnActionItemClickListener()
@Override
public void onItemClick(QuickAction source, int pos,
int actionId)
ActionItem actionItem = quickAction.getActionItem(pos);
quickAction.dismiss();
// here we can filter which action item was clicked with
// pos or actionId parameter
if (actionId == ID_TABLE)
closeDropdown();
else if (actionId == ID_TASK)
closeDropdown();
ReplaceFragment.getReplaceFragment(getActivity(),
new TaskLeadingActivity(), "left");
else if (actionId == ID_MANAGER)
closeDropdown();
ReplaceFragment.getReplaceFragment(getActivity(),
new ManagerPageActivity(), "left");
else if (actionId == ID_RECIPE)
closeDropdown();
ReplaceFragment.getReplaceFragment(getActivity(),
new ReceipiesScreenActivity(), "left");
else if (actionId == ID_INSTRUCTION)
closeDropdown();
ReplaceFragment.getReplaceFragment(getActivity(),
new InstructionActivity(), "left");
else if (actionId == ID_SEARCH)
closeDropdown();
else if (actionId == ID_HELP)
closeDropdown();
else if (actionId == ID_SETTING)
closeDropdown();
ReplaceFragment.getReplaceFragment(getActivity(),
new SettingScreenActivity(), "left");
else if (actionId == ID_LOGOUT)
closeDropdown();
Logout logout = new Logout(getActivity());
);
// set listnener for on dismiss event, this listener will be called only
// if QuickAction dialog was dismissed
// by clicking the area outside the dialog.
quickAction.setOnDismissListener(new QuickAction.OnDismissListener()
@Override
public void onDismiss()
// Toast.makeText(getActivity(), "Dismissed",
// Toast.LENGTH_SHORT).show();
closeDropdown();
);
// Set listener for action item clicked
quickActionLocation
.setOnActionItemClickListener(new QuickActionLocation.OnActionItemClickListener()
@Override
public void onItemClick(QuickActionLocation source,
int pos, int actionId)
ActionItem actionItem = quickActionLocation
.getActionItem(pos);
quickActionLocation.dismiss();
// here we can filter which action item was clicked with
// pos or actionId parameter
if (actionId == ID_KP)
getTableStatus("Koregaon Park");
else if (actionId == ID_CITY)
getTableStatus("Phoneix Market City");
else if (actionId == ID_BANER)
getTableStatus("Baner");
);
mDropdownTitle = ((TextView) view
.findViewById(R.id.dropdown_textview_table_sectionwise));
mDropdownTitle.setText(pref.getUserNameToGetManagerPage()
.substring(0, 1).toUpperCase()
+ pref.getUserNameToGetManagerPage().substring(1).toLowerCase()
+ " ");
final TextView dropDownTextView = (TextView) view
.findViewById(R.id.dropdown_textview_table_sectionwise);
dropDownTextView.setOnClickListener(new OnClickListener()
@Override
public void onClick(View v)
if (PopupWindows.mWindow.isShowing())
closeDropdown();
else
openDropdown();
quickAction.show(v);
);
public void getTableStatus(String location)
pref.setLocation(location);
Log.e(TAG, "location : " + pref.getLocation());
TableStatusAsync Async = new TableStatusAsync(getActivity());
HashMap<String, String> map = new HashMap<String, String>();
map.put("UserId", pref.getUserId());
map.put("SectionId", "0");
map.put("Location", pref.getLocation());
Async.execute(map);
private void openDropdown()
mDropdownTitle.setCompoundDrawablesWithIntrinsicBounds(0, 0,
R.drawable.arrow_up, 0);
private void closeDropdown()
mDropdownTitle.setCompoundDrawablesWithIntrinsicBounds(0, 0,
R.drawable.arrow_down, 0);
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id)
Toast.makeText(activity, "Clicked" + position, Toast.LENGTH_SHORT)
.show();
GetSectionsAsync.java
package com.malaka.helper.async;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import com.malaka.helper.AsyncAttributes;
import com.malaka.helper.ReplaceFragment;
import com.malaka.helper.TableStatusXmlParser;
import com.malaka.ui.CustomerDetailsActivity;
import com.malaka.ui.TableScreenSectionwiseActivity;
import com.malaka.utils.CommanUtils;
import com.malaka.utils.NetworkUtils;
import com.malaka.utils.PreferenceUtils;
public class GetSectionsAsync extends
AsyncTask<Map<String, String>, Void, Void>
final static String TAG = "GetSectionsAsync";
FragmentActivity context;
String xml;
HashMap<String, ArrayList<String>> details;
PreferenceUtils pref;
int response;
boolean isConnected;
public GetSectionsAsync(FragmentActivity context)
this.context = context;
pref = new PreferenceUtils(context);
@Override
protected void onPreExecute()
super.onPreExecute();
CommanUtils.getDialogShow(context, "Please Wait...");
@Override
protected Void doInBackground(Map<String, String>... params)
if (NetworkUtils.isConnectedToInternet(context))
isConnected = true;
HashMap<String, String> map = (HashMap<String, String>) params[0];
SoapObject request = new SoapObject(
AsyncAttributes.GetSecNAMESPACE,
AsyncAttributes.GetSecMETHOD_NAME);
Iterator<String> iterator = map.keySet().iterator();
PropertyInfo pi = new PropertyInfo();
pi.setName("RLocation");
pi.setValue(map.get("Location_Name"));
pi.setType(String.class);
request.addProperty(pi);
while (iterator.hasNext())
String key = iterator.next();
request.addProperty(key, map.get(key));
Log.e(TAG, "user id key: " + key + " value: " + map.get(key));
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(
AsyncAttributes.GetSecURL);
try
androidHttpTransport.call(AsyncAttributes.GetSecSOAP_ACTION,
envelope);
SoapObject result = (SoapObject) envelope.bodyIn;
if (result
.toString()
.equals("GetSectionsForLocationResponseGetSectionsForLocationResult=Failur; "))
String xmltemp = String.valueOf(result).split("=")[1];
xml = xmltemp.split(";")[0];
else
String xmltemp = "<NewDataSet>\n"
+ String.valueOf(result).split("<NewDataSet>")[1];
xml = xmltemp.split("</NewDataSet>")[0] + "</NewDataSet>";
catch (Exception e)
e.printStackTrace();
if (xml == null)
response = 1;
Log.e(TAG, "xml null");
else if (xml.equals("No Table available"))
response = 2;
else
response = 2;
Log.e(TAG, "Task 1 result " + xml);
details = TableStatusXmlParser.getSectionsXml(xml, context);
else
isConnected = false;
return null;
protected void onPostExecute(Void result)
super.onPostExecute(result);
CommanUtils.getDialogDismiss();
if (!isConnected)
CommanUtils.showAlertDialog("Internet Is Required", context);
else if (response == 1)
CommanUtils.getToast("Server Error", context);
if (response == 2)
pref.setSectionStatus(true);
goAhead();
private void goAhead()
Bundle bundle = new Bundle();
bundle.putSerializable("SECTIONS_HASHMAP", details);
Fragment fragment = new TableScreenSectionwiseActivity();
fragment.setArguments(bundle);
ReplaceFragment.getReplaceFragment(context, fragment, "");
如果你们想要 FragmentMainActivity 代码。我可以放。但我不认为这是必需的。提前致谢。
【问题讨论】：
您的布局中有 TableScreenSectionwiseActivity 吗？ 从布局中删除它。仅使用运行时事务 那么，改写什么。View view = inflater.inflate(R.layout.table_screen_sectionwise, container, false);
你的活动布局中有<fragment吗？
是的。我有 fragment_main_activity.xml，其中包括 <fragment。
【参考方案1】：
最后我通过INTERFACE实现了。
只需像下面这样......
在GetSectionsAsync.java 中创建名为FragmentInterfaceCallBack 的接口并声明一个名为onTaskCompleted() 的方法。
现在在GetSectionsAsync.java 中定义一个名为setFragmentInterfaceCallBack 的方法，该方法将在从TableScreenSectionwiseActivity.java 调用时设置接口的对象。
现在在onPostExecute 方法中编写下面的代码....interfaceCallBack.onTaskCompleted(details); details 是从网络服务接收到的数据。
转到TableScreenSectionwiseActivity.java 并实现FragmentInterfaceCallBack，定义它的onTaskCompleted() 方法并将下面的代码添加到TableScreenSectionwiseActivity.java，您正在调用AsyncTask getSectionsAsync.setFragmentInterfaceCallBack(this);，其中getSectionsAsync 是GetSectionsAsync.java 的对象.
在onTaskCompleted() 方法中，您可以获得所需的数据。
我对我的两个文件进行了以下更改。
GetSectionsAsync.java
制作接口并定义setFragmentInterfaceCallBack()方法....
private FragmentInterfaceCallBack interfaceCallBack;
public interface FragmentInterfaceCallBack
public void onTaskCompleted(HashMap<String, ArrayList<String>> map);
public void setFragmentInterfaceCallBack(
FragmentInterfaceCallBack _interfaceCallBack)
this.interfaceCallBack = _interfaceCallBack;
在 onPostExecute 方法中......
protected void onPostExecute(Void result)
super.onPostExecute(result);
CommanUtils.getDialogDismiss();
if (!isConnected)
CommanUtils.showAlertDialog("Internet Is Required", context);
else if (response == 1)
CommanUtils.getToast("Server Error", context);
if (response == 2)
pref.setSectionStatus1(true);
// goAhead();
interfaceCallBack.onTaskCompleted(details);
TableScreenSectionwiseActivity.java
实现接口....
public class TableScreenSectionwiseActivity extends Fragment implements OnItemClickListener, FragmentInterfaceCallBack
正在调用 AsyncTask....
if (!pref.getSectionStatus1())
Log.e("Once Again in TableScreenSectionwiseActivity: ", "hmm....");
GetSectionsAsync getSectionsAsync = new GetSectionsAsync(
getActivity());
getSectionsAsync.setFragmentInterfaceCallBack(this);
HashMap<String, String> map = new HashMap<String, String>();
map.put("Location_Name", pref.getLocation());
getSectionsAsync.execute(map);
定义接口的方法....
@Override
public void onTaskCompleted(HashMap<String, ArrayList<String>> hashMap)
ids = hashMap.get("ID_LIST");
names = hashMap.get("NAME_LIST");
table_section_adapter adapter = new table_section_adapter(
activity.getApplicationContext(), names, ids);
section_list.setAdapter(adapter);
section_list.setOnItemClickListener(this);
就是这样。希望这会对某人有所帮助..
【讨论】：
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