ExpanlistView n`affiche pas les donnees
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!
