Question

我想在ExpandableListview中单击Group时显示一个Activity，我试图将一个intent放到onGroupExpand上以打开新活动而不是子列表。但是当它只打开活动时。当我点击群组时，我想在下面显示它。这是我的代码

package pack.ExpandableListtwo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.ExpandableListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.SimpleExpandableListAdapter;

 public class ExpandableListDemo extends ExpandableListActivity {

@SuppressWarnings("unchecked")
public void onCreate(Bundle savedInstanceState) {
    try {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);

    SimpleExpandableListAdapter expListAdapter =
        new SimpleExpandableListAdapter(
                this,
                createGroupList(),              
                R.layout.group_row,                         
                new String[] { "Group Item" },  
                new int[] { R.id.row_name },                        
                createChildList(),              
                R.layout.child_row,             
                new String[] {"Sub Item"},      
                new int[] { R.id.grp_child}     
            );
        setListAdapter( expListAdapter );       

    }catch(Exception e){
        System.out.println("Errrr +++ " + e.getMessage());
    }
}

/* Creating the Hashmap for the row */
@SuppressWarnings("unchecked")
private List createGroupList() {
      ArrayList result = new ArrayList();
      for( int i = 0 ; i < 3 ; ++i ) { // 3 groups........
        HashMap m = new HashMap();
        m.put( "Group Item","Group Item " + i ); // the key and it's value.
        result.add( m );
      }
      return (List)result;
}

/* creatin the HashMap for the children */
@SuppressWarnings("unchecked")
private List createChildList() {

    ArrayList result = new ArrayList();
    for( int i = 0 ; i < 3 ; ++i ) { // this -3 is the number of groups(Here it's fifteen)
      /* each group need each HashMap-Here for each group we have 3 subgroups */
      ArrayList secList = new ArrayList(); 
      Intent intent = new Intent(getApplicationContext(),
              MainActivity.class);
      startActivity(intent);
     result.add( secList );
    }        
    return result;
}
public void  onContentChanged  () {
    System.out.println("onContentChanged");
    super.onContentChanged();         
}
/* This function is called on each child click */
public boolean onChildClick( ExpandableListView parent, View v, int groupPosition,int childPosition,long id) {


        return true;
    } 

/* This function is called on expansion of the group */
public void  onGroupExpand  (int groupPosition) {
    try{
         System.out.println("Group exapanding Listener => groupPosition = " + groupPosition);

    }catch(Exception e){
        System.out.println(" groupPosition Errrr +++ " + e.getMessage());

        Intent intent = new Intent(getApplicationContext(),
                MainActivity.class);
             startActivity(intent);

    }
}  
}

Answer 1

正如Aleks所说，这是不可能的，因为每个活动只能包含单个布局，尽管您可以使用某种自下而上的动画或使用可见性隐藏并在同一个xml中显示另一个布局，您可以将其放在下面你的ExpnadibleListView。

ExpandableListView打开下面的新活动

1 个答案: