Discussion :

[mimofifi]

Bonjour,

Mon appli n`affiche pas le ExpandListview.
J`ai modifie la base adapteur pour HashMap comme suivant, mais rien ne s`affiche.

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public class DataItem {
public String Name;
public String CreationTimeDescription;
public String Description;    
 
public DataItem(String name, String creationTimeDescription, String description) {
    this.Description = description;
    this.Name = name;
    this.CreationTimeDescription = creationTimeDescription;       
}
 
}

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    public class ExpandableListAdapter extends BaseExpandableListAdapter
 
{
    private Context context;
    List<String> listDataHeader = new ArrayList<String>();
    private HashMap<String, DataItem> listDataChild;
 
    public ExpandableListAdapter(Context context, ArrayList<DataItem> filteredList) {
        this.context = context;
        listDataChild = new HashMap<String, DataItem>();
        for (DataItem data : filteredList) {
            this.listDataChild.put(data.Name, data);
        }
 
        for (DataItem data : filteredList) {
            listDataHeader.add(data.Name);
        }
    }
 
    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return listDataChild.get(this.listDataHeader.get(groupPosition));
    }
 
    @Override
    public long getChildId(int groupPosition, int childPosition) {
 
        return childPosition;
    }
 
    @Override
    public View getChildView(int groupPosition, int childPosition,
                             boolean isLastChild, View convertView, ViewGroup parent) {
        final String childText = (String) getChild(groupPosition, childPosition);
 
        if (convertView == null) {
            LayoutInflater inflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.list_item, null);
        }
        TextView tv = (TextView) convertView.findViewById(R.id.lblListItem);
        tv.setText(childText);
        return convertView;
    }
 
    @Override
    public int getChildrenCount(int groupPosition) {
        return this.listDataChild.size();
    }
 
    @Override
    public Object getGroup(int groupPosition) {
        return this.listDataHeader.get(groupPosition);
    }
 
    @Override
    public int getGroupCount() {
        return this.listDataHeader.size();
    }
 
    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }
 
    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
                             View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        String headertext = (String) getGroup(groupPosition);
        if (convertView == null) {
            LayoutInflater inflater = (LayoutInflater) this.context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.list_group, null);
        }
        TextView txtGroup = (TextView) convertView.findViewById(R.id.lblListHeader);
        txtGroup.setText(headertext);
        return convertView;
    }
 
    @Override
    public boolean hasStableIds() {
        // TODO Auto-generated method stub
        return false;
    }
 
    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return false;
    }
 
}

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public class MainActivity extends Activity {
 
ExpandableListView ex_listview;
ExpandableListAdapter listadapter;
List<String> listDataHeader;
HashMap<String, DataItem> listDataChild;
 ArrayList<DataItem> values = new ArrayList<>();
 
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ex_listview = (ExpandableListView) findViewById(R.id.ex_list);
    setdata();
    listadapter = new Test.hashlistviewapplication.ExpandableListAdapter(this, values);
 
 
    ex_listview.setAdapter(listadapter);
    ex_listview.setOnGroupClickListener(new OnGroupClickListener() {
 
        @Override
        public boolean onGroupClick(ExpandableListView parent, View v,
                                    int groupPosition, long id) {
            // TODO Auto-generated method stub
            return false;
        }
    });
    ex_listview.setOnGroupExpandListener(new OnGroupExpandListener() {
 
        @Override
        public void onGroupExpand(int groupPosition) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Expanded",
                    Toast.LENGTH_SHORT).show();
        }
    });
    ex_listview.setOnGroupCollapseListener(new OnGroupCollapseListener() {
 
        @Override
        public void onGroupCollapse(int groupPosition) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Collapsed",
                    Toast.LENGTH_SHORT).show();
 
        }
    });
 
}
 
private void setdata() {       
    DataItem val = new DataItem("WORLD", "PALCE", "1212", "JHJHJ", "TYTYT", "HGHGHH");
 
 
 
    values.add(val);
}
 
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    // getMenuInflater().inflate(R.menu.main, menu);
    return true;
    }
 
}

Activity_main xml

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
 
<ExpandableListView
    android:id="@+id/ex_list"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
</ExpandableListView>

list_group.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp"
android:background="#000000">
 
 
<TextView
    android:id="@+id/lblListHeader"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft"
    android:textSize="17dp"
    android:textColor="#f9f93d" />

list_item.xml

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  <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="55dip"
    android:orientation="vertical" >
 
    <TextView
        android:id="@+id/lblListItem"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="17dip"
        android:paddingTop="5dp"
        android:paddingBottom="5dp"
        android:textColor="#000000"
        android:paddingLeft="?android:attr/expandableListPreferredChildPaddingLeft" />
 
</LinearLayout>

Mecrci d`avance!