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Menu déroulant ExpandableListView à 3 niveaux

2015-04-15 1 views
0

J'essaie de faire un ExpandableListView à 3 niveaux. Le menu de premier niveau fonctionne bien. Le problème se produit lorsque j'ai 2 éléments ou plus dans le deuxième niveau. Les objets sont multipliés par le nombre d'objets du deuxième niveau. Par exemple,Menu déroulant ExpandableListView à 3 niveaux

Alberta

-> Edmonton

-> Calgary

-> Edmonton

-> Calgary

Cependant, je n'ajouté un Edmonton et un Calgary.

Si j'avais Edmonton, Calgary, Boston, il y aura un total de 9 articles.

(Avoir un seul article fonctionne bien).

import android.app.Activity; 
import android.content.Context; 
import android.graphics.Typeface; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.Window; 
import android.widget.BaseExpandableListAdapter; 
import android.widget.ExpandableListView; 
import android.widget.SearchView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class MainActivity extends Activity 
{ 
ExpandableListView explvlist; 
ParentLevel plAdapter; 
Content content = new Content(); 
SearchView sv; 

@Override 
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    //Remove title bar 
    this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.activity_main); 

    initCountryExpandableListView(); 
    initSearchView(); 
} 

private void initCountryExpandableListView() 
{ 
    explvlist = (ExpandableListView)findViewById(R.id.ParentLevel); 
    plAdapter = new ParentLevel(this); 
    explvlist.setAdapter(plAdapter); 

    // Listview Group click listener 
    explvlist.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() { 

     @Override 
     public boolean onGroupClick(ExpandableListView parent, View v, 
            int groupPosition, long id) { 
      Toast.makeText(getApplicationContext(), 
      "Group Clicked " + content.getCountryName(groupPosition), 
      Toast.LENGTH_SHORT).show(); 
      return false; 
     } 
    }); 
} 

private void initSearchView() 
{ 
    sv = (SearchView)findViewById(R.id.searchView); 

    sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 
     @Override 
     public boolean onQueryTextChange(String newText) { 
      if(newText.trim().length() == 0) 
      { 
       content.cancelSearch(); 
       if(plAdapter!=null) 
        plAdapter.notifyDataSetChanged(); 
      } 
      return true; 
     } 

     @Override 
     public boolean onQueryTextSubmit(String query) { 
      content.search(query); 
      if(plAdapter!=null) 
       plAdapter.notifyDataSetChanged(); 
      Toast.makeText(getApplicationContext(), 
        "Searching: " + query, 
        Toast.LENGTH_SHORT).show(); 
      return true; 
     } 
    }); 

    sv.setOnCloseListener(new SearchView.OnCloseListener() { 
     @Override 
     public boolean onClose() { 
      content.cancelSearch(); 
      if(plAdapter!=null) 
       plAdapter.notifyDataSetChanged(); 
      return true; 
     } 
    }); 
} 

public class ParentLevel extends BaseExpandableListAdapter 
{ 
    private Context _context; 
    SecondLevelAdapter slAdapter; 

    public ParentLevel(Context context) 
    { 
     this._context = context; 
    } 

    @Override 
    public Object getChild(int groupPosition, int childPosititon) 
    { 
     return content.getProvinceName(groupPosition, childPosititon); 
    } 

    @Override 
    public long getChildId(int groupPosition, int childPosition) 
    { 
     return (long)(groupPosition*1024+childPosition); // Max 1024 children per group 
    } 

    @Override 
    public View getChildView(int groupPosition, int childPosition, 
          boolean isLastChild, View convertView, ViewGroup parent) 
    { 
     final int countryPosition = groupPosition; 
     CustExpListview SecondLevelexplv = new CustExpListview(MainActivity.this); 
     slAdapter = new SecondLevelAdapter(_context, countryPosition); 
     SecondLevelexplv.setAdapter(slAdapter); 
     // Listview Group click listener 
     SecondLevelexplv.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() { 

      @Override 
      public boolean onGroupClick(ExpandableListView parent, View v, 
             int subGroupPosition, long id) { 
       Toast.makeText(getApplicationContext(), 
         "SubGroup Clicked " + content.getProvinceName(countryPosition, subGroupPosition), 
         Toast.LENGTH_SHORT).show(); 
       return false; 
      } 
     }); 

     // Listview on child click listener 
     SecondLevelexplv.setOnChildClickListener(new ExpandableListView.OnChildClickListener() { 

      @Override 
      public boolean onChildClick(ExpandableListView parent, View v, 
             int subGroupPosition, int childPosition, long id) { 
       // TODO Auto-generated method stub 
       Toast.makeText(
         getApplicationContext(), 
         "Child Clicked " + content.getCityName(countryPosition, subGroupPosition, childPosition), Toast.LENGTH_SHORT) 
         .show(); 
       return false; 
      } 
     }); 

     return SecondLevelexplv; 
    } 

    @Override 
    public int getChildrenCount(int groupPosition) 
    { 
     return content.getProvinceSize(groupPosition); 
    } 

    @Override 
    public Object getGroup(int groupPosition) 
    { 
     return content.getCountryName(groupPosition); 
    } 

    @Override 
    public int getGroupCount() 
    { 
     return content.getCountrySize(); 
    } 

    @Override 
    public long getGroupId(int groupPosition) 
    { 
     return (long)(groupPosition*1024); // To be consistent with getChildId; 
    } 

    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, 
          View convertView, ViewGroup parent) 
    { 
     String headerTitle = content.getCountryName(groupPosition); 
     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.list_group, null); 
     } 

     TextView lblListHeader = (TextView) convertView 
       .findViewById(R.id.lblListHeader); 
     lblListHeader.setTypeface(null, Typeface.BOLD); 
     lblListHeader.setText(headerTitle); 

     return convertView; 
    } 

    @Override 
    public boolean hasStableIds() 
    { 
     return true; 
    } 

    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) 
    { 
     return true; 
    } 

    @Override 
    public void notifyDataSetChanged() 
    { 
     if(slAdapter!=null) 
      slAdapter.notifyDataSetChanged(); 
     super.notifyDataSetChanged(); 
    } 
} 

public class CustExpListview extends ExpandableListView 
{ 

    public CustExpListview(Context context) 
    { 
     super(context); 
    } 

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
     // the value (2000) should not be fixed and be calculated 
     // as follows: cell_height x root_items_count x root_items_children_count 
     heightMeasureSpec = MeasureSpec.makeMeasureSpec(2000, MeasureSpec.AT_MOST); 
     super.onMeasure(widthMeasureSpec, heightMeasureSpec); 
    } 
} 

public class SecondLevelAdapter extends BaseExpandableListAdapter 
{ 

    private Context _context; 
    private int _groupPosition; 

    public SecondLevelAdapter(Context context, int groupPosition) 
    { 
     this._context = context; 
     this._groupPosition = groupPosition; 
    } 

    @Override 
    public Object getChild(int subGroupPosition, int childPosition) 
    { 
     return content.getCity(subGroupPosition, childPosition); 
    } 

    @Override 
    public long getChildId(int subGroupPosition, int childPosition) 
    { 
     return (long)(subGroupPosition*1024+childPosition); // Max 1024 children per group 
    } 

    @Override 
    public View getChildView(int subGroupPosition, int childPosition, 
          boolean isLastChild, View convertView, ViewGroup parent) 
    { 
     String headerTitle = content.getCityName(_groupPosition, subGroupPosition, childPosition); 
     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.list_child, null); 
     } 

     TextView lblListChild = (TextView) convertView.findViewById(R.id.lblListChild); 
     lblListChild.setText(headerTitle); 

     return convertView; 
    } 

    @Override 
    public int getChildrenCount(int subGroupPosition) 
    { 
     return content.getCitySize(_groupPosition, subGroupPosition); 
    } 

    @Override 
    public Object getGroup(int subGroupPosition) 
    { 
     return content.getProvinceName(_groupPosition, subGroupPosition); 
    } 

    @Override 
    public int getGroupCount() 
    { 
     return content.getProvinceSize(_groupPosition); 
    } 

    @Override 
    public long getGroupId(int groupPosition) 
    { 
     return (long)(groupPosition*1024); // To be consistent with getChildId; 
    } 

    @Override 
    public View getGroupView(int subGroupPosition, boolean isExpanded, 
          View convertView, ViewGroup parent) 
    { 
     String headerTitle = content.getProvinceName(_groupPosition, subGroupPosition); 
     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.list_subgroup, null); 
     } 

     TextView lblSubListHeader = (TextView) convertView.findViewById(R.id.lblSubListHeader); 
//   lblSubListHeader.setTypeface(null, Typeface.BOLD); 
     lblSubListHeader.setText(headerTitle); 

     return convertView; 
    } 

    @Override 
    public boolean hasStableIds() { 
     return true; 
    } 

    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return true; 
    } 

} 
}

Content.java

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

public class Content { 

private LinkedHashMap<String, LinkedHashMap<String, List<String>>> data = new LinkedHashMap<>(); 
private LinkedHashMap<String, LinkedHashMap<String, List<String>>> searchedData = new LinkedHashMap<>(); 
private boolean isSearch = false; 

public Content() 
{ 
    LinkedHashMap<String, List<String>> alberta = new LinkedHashMap<>(); 
    List<String> edmonton = new ArrayList<>(); 
    edmonton.add("Snowboarding in Edmonton"); 
    edmonton.add("Parkland and environment"); 
    alberta.put("Edmonton", edmonton); 

    List<String> calgary = new ArrayList<>(); 
    calgary.add("First settlement"); 
    calgary.add("Oil boom"); 
    alberta.put("Calgary", calgary); 
    data.put("Alberta", alberta); 

    LinkedHashMap<String, List<String>> bc = new LinkedHashMap<>(); 
    List<String> whistler = new ArrayList<>(); 
    whistler.add("Snowboarding in whistler"); 
    whistler.add("Food an culture of whistler by Dr.Kowuasky"); 
    bc.put("Whistler", whistler); 

    List<String> whiteRock = new ArrayList<>(); 
    whiteRock.add("Poker Group"); 
    whiteRock.add("Pool Club"); 
    bc.put("White Rock", whiteRock); 

    List<String> burnaby = new ArrayList<>(); 
    burnaby.add("Google programming contest"); 
    burnaby.add("Facebook Hackathon"); 
    bc.put("Burnaby", burnaby); 
    data.put("British Columbia", bc); 

    LinkedHashMap<String, List<String>> manitoba = new LinkedHashMap<>(); 
    data.put("Manitoba", manitoba); 

    LinkedHashMap<String, List<String>> newBrunswick = new LinkedHashMap<>(); 
    data.put("New Brunswick", newBrunswick); 

    LinkedHashMap<String, List<String>> newfoundland = new LinkedHashMap<>(); 
    data.put("Newfoundland", newfoundland); 

    LinkedHashMap<String, List<String>> novaScotia = new LinkedHashMap<>(); 
    data.put("Nova Scotia", novaScotia); 

    LinkedHashMap<String, List<String>> ontario = new LinkedHashMap<>(); 
    data.put("Ontario", ontario); 

    LinkedHashMap<String, List<String>> pei = new LinkedHashMap<>(); 
    data.put("Prince Edward Island", pei); 

    LinkedHashMap<String, List<String>> quebec = new LinkedHashMap<>(); 
    data.put("Quebec", quebec); 
} 

private LinkedHashMap<String, LinkedHashMap<String, List<String>>> getData() 
{ 
    if(isSearch) 
    { 
     return searchedData; 
    } 
    else 
    { 
     return data; 
    } 
} 

public void search(String input) 
{ 
    isSearch = true; 
    searchedData.clear(); 

    for(String country : data.keySet()) 
    { 
     if(country.toLowerCase().contains(input.toLowerCase())) 
     { 
      //Add this country 
      addCountry(country); 
     } 
     for(String province : data.get(country).keySet()) 
     { 
      if(province.toLowerCase().contains(input.toLowerCase())) 
      { 
       //Add this province 
       addProvince(country, province); 
      } 
      for(String city : data.get(country).get(province)) 
      { 
       if(city.toLowerCase().contains(input.toLowerCase())) 
       { 
        //Add this city 
        addCity(country, province, city); 
       } 
      } 
     } 
    } 
} 

private void addCountry(String country) 
{ 
    if(!searchedData.containsKey(country)) 
    { 
     searchedData.put(country, new LinkedHashMap<String, List<String>>()); 
    } 
} 

private void addProvince(String country, String province) 
{ 
    addCountry(country); 
    if(!searchedData.get(country).containsKey(province)) 
    { 
     searchedData.get(country).put(province, new ArrayList<String>()); 
    } 
} 

private void addCity(String country, String province, String city) 
{ 
    addProvince(country, province); 
    if(!searchedData.get(country).get(province).contains(city)) 
    { 
     searchedData.get(country).get(province).add(city); 
    } 
} 

public void cancelSearch() 
{ 
    isSearch = false; 
} 

public int getCountrySize() 
{ 
    return getData().size(); 
} 

public String getCountryName(int countryIndex) 
{ 
    List<String> l = new ArrayList<>(getData().keySet()); 
    return l.get(countryIndex); 
} 

public LinkedHashMap<String, List<String>> getProvince(int countryIndex) 
{ 
    List<LinkedHashMap<String, List<String>>> l = new ArrayList<>(getData().values()); 
    return l.get(countryIndex); 
} 

public int getProvinceSize(int countryIndex) 
{ 
    return getProvince(countryIndex).size(); 
} 

public String getProvinceName(int countryIndex, int provinceIndex) 
{ 
    LinkedHashMap<String, List<String>> p = getProvince(countryIndex); 
    List<String> l = new ArrayList<>(p.keySet()); 
    return l.get(provinceIndex); 
} 

public List<String> getCity(int countryIndex, int provinceIndex) 
{ 
    LinkedHashMap<String, List<String>> p = getProvince(countryIndex); 
    List<List<String>> l = new ArrayList<>(p.values()); 
    return l.get(provinceIndex); 
} 

public int getCitySize(int countryIndex, int provinceIndex) 
{ 
    return getCity(countryIndex, provinceIndex).size(); 
} 

public String getCityName(int countryIndex, int provinceIndex, int cityIndex) 
{ 
    List<String> c = getCity(countryIndex, provinceIndex); 
    return c.get(cityIndex); 
} 
}

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Source

2015-04-15 Eric Kim

+0

Où est 'explvlist' peuplée? – Siguza

+0

Contenu content = nouveau Content(); J'ai codé en dur les données dans la classe Content. –

+0

Pourriez-vous nous montrer la classe 'Content'? – Siguza

Répondre

1

mis la deuxième expandablelistadapter getGroupCount retourner 1

Source

2016-02-21 17:44:45

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