gridview上的NotifyDataSetChanged不起作用 - Android

Question

我正在使用GridView。我想在某些基础上更新GridView。但是notifyDataSetChanged（）方法无效。

我正在根据部分名称选择表格。当我第一次选择部分名称时，比我得到该部分的表格。但是当我再次进入片段片段并选择diff时。部分比我之前选择的表格。这意味着notifyDataSetChanged（）无效。

我尝试的内容如下所示。

TableScreenActivity.java

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.app.Dialog;
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.Display;
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.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.view.animation.ScaleAnimation;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.TextView;

import com.malaka.R;
import com.malaka.db.DBAdapter;
import com.malaka.helper.ActionItem;
import com.malaka.helper.AssignGetterSetter;
import com.malaka.helper.Attributes;
import com.malaka.helper.CategoryAdapter;
import com.malaka.helper.DialogAdapter;
import com.malaka.helper.JoinTableAdapter;
import com.malaka.helper.ListSwipeDetector;
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.AddNewCustomerAsync;
import com.malaka.helper.async.CustomerPhotoAsync;
import com.malaka.helper.async.GetValetNoAsync;
import com.malaka.helper.async.ReAssignTableAsync;
import com.malaka.helper.async.SetTableStatusAsync;
import com.malaka.helper.async.TableStatusAsync;
import com.malaka.helper.async.UnAttendedAsync;
import com.malaka.helper.async.ValetAsync;
import com.malaka.utils.CommanUtils;
import com.malaka.utils.PreferenceUtils;

public class TableScreenActivity extends Fragment {

    final static String TAG = "TableScreenActivity";
    Button btnBarCode, btnFeedBack, btnLogOut;
    GridView gridView;
    private TextView mDropdownTitle;
    static DBAdapter dbAdapter;
    TextView malaka, version;
    ImageView refresh;
    Animation rotation;
    boolean isOpen = false;
    RelativeLayout rl;
    public static FragmentActivity activity;
    LinearLayout mDropdownFoldOutNewCust;
    TextView dropDownTextViewNewCust, alt0NewCust, alt1NewCust,
            mDropdownTitleNewCust;
    LinearLayout ll;
    static Dialog dialogAddCust, joinDialog;
    ListSwipeDetector detector;
    static PreferenceUtils pref;
    ArrayList<String> tableName, tableId, sectionId, tableDescriptionId,
            tableDescription, custName, custId, custNo, parentId, isManager,
            parentName;
    ArrayList<String> isVale, isInquired;
    ArrayList<Integer> tableColors;
    Bundle bundle;
    String name = "", no = "", custType = "", tableIds, tableDesc;
    static String tableDescId;
    static EditText edtName, edtNo;
    int pos;
    QuickAction quickAction;
    QuickActionLocation quickActionLocation;

    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_SECTIONS = 11;

    private static final int ID_KP = 10;
    private static final int ID_BANER = 20;
    private static final int ID_CITY = 30;

    static ArrayList<String> o_name, o_id, e_id, mTableIdList;

    private CategoryAdapter categoryAdapter;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        System.out.println("TestTag: savedInstanceState " + savedInstanceState
                + " container: " + container);
        System.out.println("TestTag: o_name " + o_name + " mTableIdList: "
                + mTableIdList);
        View view = inflater.inflate(R.layout.table_screen, container, false);
        init(view);
        return view;
    }

    private void init(View view) {
        System.out.println("TestTag: Time1: " + System.currentTimeMillis());
        // getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        activity = getActivity();
        o_id = new ArrayList<String>();
        o_name = new ArrayList<String>();
        e_id = new ArrayList<String>();
        mTableIdList = new ArrayList<String>();
        TextView textView = (TextView) view.findViewById(R.id.txt_table_status);
        textView.setVisibility(View.GONE);
        refresh = (ImageView) view.findViewById(R.id.img_refresh_table);
        rotation = AnimationUtils.loadAnimation(getActivity(),
                R.anim.refresh_dialog);
        pref = new PreferenceUtils(getActivity());
        version = (TextView) view.findViewById(R.id.table_version);
        version.setText(pref.getVersion());

        if (!pref.getTableStatus()) {
            TableStatusAsync Async = new TableStatusAsync(getActivity());
            HashMap<String, String> map = new HashMap<String, String>();
            Log.e(TAG,
                    "user id : " + pref.getUserId() + "location : "
                            + pref.getLocation() + "SectionId: "
                            + pref.getSectionId());
            map.put("UserId", pref.getUserId());
            map.put("SectionId", pref.getSectionId());
            map.put("Location", pref.getLocation());
            Async.execute(map);
        }

        dbAdapter = new DBAdapter(getActivity());
        dbAdapter.open();
        tableId = dbAdapter.getTableId();
        tableName = dbAdapter.getTableName();
        sectionId = dbAdapter.getTableSectionId();
        tableDescriptionId = dbAdapter.getTableDescriptionId();
        tableDescription = dbAdapter.getTableDescription();
        custName = dbAdapter.getTableCustName();
        custId = dbAdapter.getTableCustID();
        custNo = dbAdapter.getTableCustNo();
        parentId = dbAdapter.getTableParentId();
        parentName = dbAdapter.getTableParentName();

        isVale = dbAdapter.getTableIsValeStatus();
        isManager = dbAdapter.getTableIsManagerStatus();
        isInquired = dbAdapter.getTableIsInquiredStatus();
        dbAdapter.close();
        Log.d(TAG, "Table length ==" + tableId.size());
        tableColors = new ArrayList<Integer>();
        for (int i = 0; i < tableDescriptionId.size(); i++) {
            tableColors.add(Attributes.getColors(tableDescriptionId.get(i),
                    getActivity()));
        }

        ll = (LinearLayout) view.findViewById(R.id.table_ll);

        rl = (RelativeLayout) view.findViewById(R.id.ll);
        if (pref.getUserRole()) {
            rl.setVisibility(View.VISIBLE);
        } else {
            rl.setVisibility(View.GONE);
        }
        rl.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                quickActionLocation.show(arg0);
            }
        });

        detector = new ListSwipeDetector();

        malaka = (TextView) view.findViewById(R.id.txt_malaka_title_table);
        malaka.setText(pref.getLocation());
        gridView = (GridView) view.findViewById(R.id.gridView_table);
        if (tableId.size() <= 0) {
            gridView.setVisibility(View.GONE);
            textView.setVisibility(View.VISIBLE);
        } else {
            gridView.setVisibility(View.VISIBLE);
            textView.setVisibility(View.GONE);
        }

        dbAdapter = new DBAdapter(getActivity());

        // CategoryAdapter categoryAdapter = new CategoryAdapter(getActivity(),
        // 0,
        // tableName, tableColors, isInquired, custName,
        // tableDescriptionId, parentId, parentName, isManager);
        // gridView.setAdapter(categoryAdapter);
        // categoryAdapter.notifyDataSetChanged();

        //tableName.clear();
        //tableName = dbAdapter.getTableName();

        categoryAdapter = new CategoryAdapter(getActivity(), 0, tableName,
                tableColors, isInquired, custName, tableDescriptionId,
                parentId, parentName, isManager);
        gridView.setAdapter(categoryAdapter);
        categoryAdapter.notifyDataSetChanged();

        mDropdownTitle = ((TextView) view
                .findViewById(R.id.dropdown_textview_table));
        mDropdownTitle.setText(pref.getUserNameToGetManagerPage()
                .substring(0, 1).toUpperCase()
                + pref.getUserNameToGetManagerPage().substring(1).toLowerCase()
                + "   ");
        final TextView dropDownTextView = (TextView) view
                .findViewById(R.id.dropdown_textview_table);
        dropDownTextView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                if (PopupWindows.mWindow.isShowing()) {
                    closeDropdown();
                } else {
                    openDropdown();
                }
                quickAction.show(v);
            }
        });
        gridView.setOnTouchListener(detector);

gridView.setOnItemLongClickListener(new OnItemLongClickListener() {
    ....
    ....
    }
    gridView.setOnItemClickListener(new OnItemClickListener() {
    ....
    ....
    }
}// init() method closes

    @Override
    public void onAttach(Activity activity) {
        Log.d(TAG, "TestTag::: onAttach()");
        super.onAttach(activity);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "TestTag::: onCreate() savedInstanceState: "
                + savedInstanceState);
        super.onCreate(savedInstanceState);
    }

    @Override
    public void onStart() {
        Log.d(TAG, "TestTag::: onStart()");
        super.onStart();
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        Log.d(TAG, "TestTag::: onActivityCreated(): savedInstanceState "
                + savedInstanceState);
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onResume() {
        Log.d(TAG, "TestTag::: onResume()");
        super.onResume();
    }

    @Override
    public void onPause() {
        Log.d(TAG, "TestTag::: onPause()");
        super.onPause();
    }

    @Override
    public void onDestroyView() {
        Log.d(TAG, "TestTag::: onDestroyView()");
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        Log.d(TAG, "TestTag::: onDestroy()");
        super.onDestroy();
    }

    @Override
    public void onStop() {
        Log.d(TAG, "TestTag::: onStop()");
        super.onStop();
    }

    @Override
    public void onDetach() {
        Log.d(TAG, "TestTag::: onDetach()");
        super.onDetach();
    }
}

请，帮助。我被困住了。谢谢你。

修改

TableStatusAsync.java

package com.malaka.helper.async;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;

import android.os.AsyncTask;
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.TableScreenActivity;
import com.malaka.utils.CommanUtils;
import com.malaka.utils.NetworkUtils;
import com.malaka.utils.PreferenceUtils;

public class TableStatusAsync extends
        AsyncTask<Map<String, String>, Void, Void> {

    final static String TAG = "TableStatusAsync";
    FragmentActivity context;
    String xml;
    PreferenceUtils pref;
    int response;
    boolean isConnected;

    public TableStatusAsync(FragmentActivity context) {
        this.context = context;
        pref = new PreferenceUtils(context);
    }

    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub
        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.TableStatusNAMESPACE,
                    AsyncAttributes.TableStatusMETHOD_NAME);

            Iterator<String> iterator = map.keySet().iterator();

            // PropertyInfo pi1 = new PropertyInfo();
            // pi1.setName("UserId");
            // pi1.setValue(map.get("UserId"));
            // pi1.setType(String.class);
            //
            // PropertyInfo pi2 = new PropertyInfo();
            // pi2.setName("SectionId");
            // pi2.setValue(map.get("SectionId"));
            // pi2.setType(String.class);
            //
            // PropertyInfo pi3 = new PropertyInfo();
            // pi3.setName("Location");
            // pi3.setValue(map.get("Location"));
            // pi3.setType(String.class);
            //
            // request.addProperty(pi1);
            // request.addProperty(pi2);
            // request.addProperty(pi3);

            Log.e(TAG,
                    "user id : " + map.get("UserId") + "\nsection id : "
                            + map.get("SectionId") + "\nlocation : "
                            + map.get("Location"));

            while (iterator.hasNext()) {
                String key = iterator.next();
                request.addProperty(key, map.get(key));
                Log.d(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.TableStatusURL);

            try {
                androidHttpTransport.call(
                        AsyncAttributes.TableStatusSOAP_ACTION, envelope);
                SoapObject result = (SoapObject) envelope.bodyIn;

                if (result
                        .toString()
                        .equals("GetTableStatusResponse{GetTableStatusResult=No Table available; }")) {
                    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.d(TAG, "xml null");
            } else if (xml.equals("No Table available")) {
                response = 2;
            } else {
                response = 2;
                Log.d(TAG, "Task 1 result " + xml);
                TableStatusXmlParser.getTableStatusXmlParseData(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.setTableStatus(true);
            ReplaceFragment.getReplaceFragment(context,
                    new TableScreenActivity(), "");
        }
    }
}

编辑 - 2

CategoryAdapter.java

package com.malaka.helper;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.malaka.R;
import com.malaka.utils.PreferenceUtils;

public class CategoryAdapter extends ArrayAdapter<String> {
    ArrayList<String> table, custName, isInquired, isManager, sectionId,
            parentId, parentname;
    ArrayList<Integer> tableColors;
    FragmentActivity context;
    ArrayList<Boolean> status;
    View view;
    PreferenceUtils pref;
    int posision;
    final static String TAG = "CategoryAdapter";

    public CategoryAdapter(FragmentActivity context, int textViewResourceId,
            List<String> objects, List<Integer> colors,
            List<String> isInquired, List<String> custName,
            List<String> sectionId, List<String> parentId,
            List<String> parentname, List<String> ismanager) {
        super(context, textViewResourceId, objects);
        // TODO Auto-generated constructor stub
        table = (ArrayList<String>) objects;
        this.parentId = (ArrayList<String>) parentId;
        this.parentname = (ArrayList<String>) parentname;
        pref = new PreferenceUtils(context);
        this.custName = (ArrayList<String>) custName;
        tableColors = (ArrayList<Integer>) colors;
        this.isManager = (ArrayList<String>) ismanager;
        this.isInquired = (ArrayList<String>) isInquired;
        this.sectionId = (ArrayList<String>) sectionId;
        status = new ArrayList<Boolean>();
        Log.i(TAG, "\nisInquired == " + isInquired);
        this.context = context;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        view = convertView;
        ViewHolder holder = new ViewHolder();
        if (convertView == null) {
            Display display = context.getWindowManager().getDefaultDisplay();
            int height = display.getHeight() / 8;
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.table_screen_row, null);
            holder.textView = (TextView) convertView
                    .findViewById(R.id.txt_category_seat);
            holder.txtName = (TextView) convertView
                    .findViewById(R.id.txt_customer_name);
            holder.imageViewManager = (ImageView) convertView
                    .findViewById(R.id.imageView_table_manager);
            holder.textViewValet = (TextView) convertView
                    .findViewById(R.id.text_table_valley);
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.MATCH_PARENT, height);

            holder.rl = (RelativeLayout) convertView
                    .findViewById(R.id.category_seat);
            holder.rl.setLayoutParams(params);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        // if(isVale.get(position).equals("0")){
        // holder.textViewValet.setText("");
        // }else{
        // if(parentId.get(position).equals("0")){
        // holder.textViewValet.setText(isVale.get(position));
        // }
        // }

        Log.d(TAG, "custName == " + custName.get(position) + "\nlength == "
                + custName.get(position).length());
        if (custName.get(position).length() > 9) {
            if (parentId.get(position).equals("0")) {
                holder.txtName.setText(custName.get(position).substring(0, 8)
                        + "...");
                holder.textView.setText(table.get(position));
            } else {
                // we have to use parent table Name when Parent id is not 0
                holder.txtName.setText(parentname.get(position));
                holder.textView.setText("");
            }
        } else {
            if (parentId.get(position).equals("0")) {
                holder.txtName.setText(custName.get(position));
                holder.textView.setText(table.get(position));
            } else {
                holder.txtName.setText(parentname.get(position));
                holder.textView.setText("");
            }
        }

        if (isManager.get(position).equals("true")) {
            holder.imageViewManager
                    .setBackgroundResource(R.drawable.manager_icon);
        } else {
            holder.imageViewManager.setBackgroundResource(0);
        }

        holder.rl.setBackgroundColor(tableColors.get(position));
        return convertView;
    }

    private class ViewHolder {
        TextView textView, txtName;
        ImageView imageViewManager;
        TextView textViewValet;
        RelativeLayout rl;
    }
}

Answer 1

最后我得到了解决方案。

我在下面做过......

我正在维护一个名为getTableStatus的FLAG来获取特定部分的表格。如果getTableStatus的值为FALSE，则仅调用TableStatusAsync。在第一次选择部分时，表来自Web服务，这些表正在DB中插入。

第二次选择SECTION时，表来自数据库而不是来自Web服务。来自DB的表格是先前选择的SECTION。因此，与notifyDataSetChanged()没有任何关系。

我刚刚在选择SECTION时调用pref.setTableStatus(false);将FLAG值更改为FALSE。现在，每当您更改选择的SECTION时，都会调用TableStatusAsync。

修改后的代码......

<强> TableScreenSectionwiseActivity.java

@Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { pref.setSectionId(view.getTag().toString()); pref.setTableStatus(false); pref.setTableServiceStatus(false); Fragment fragment = new TableScreenActivity(); ReplaceFragment.getReplaceFragment(getActivity(), fragment, ""); }