Accès à la vue Image dans la liste des enfants de la liste extensible

Question

J'ai le code source suivant, ceci est une liste extensible, il a une liste d'enfants, qui a une certaine vue comme bouton Image, bouton Image, je veux faire la gestion des événements sur ces vues. s'il vous plaît me fournir le code source pour ce qui suit.

La classe publique ExpList étend ExpandableListActivity { ImageView imageView, heart; Voir la vue; ArrayList count = new ArrayList(); // contexte Contexte privé; ExpandableListAdapterDemo madapter; finale nuances de cordes statiques [] [] = {// nuances de gris { "Episode1", "Episode1", "Episode1", "Episode1", "Episode1"}, // Shades of blue { « Episode2 " "Episode2", "Episode2", "Episode2", "Episode2", "Episode2"}, {
"Episode3", "Episode3", "Episode3"}, // nuances de rouge {" Episode4 "," Episode4 "," Episode4 "," Episode4 "}, {" Episode5 "," Episode5 "," Episode5 "," Episode5 "}, {" Episode6 "," Episode6 "," Episode6 "," Episode6 " "," Episode6 ", " Episode6 "}, {" Episode7 "," Episode7 "," Episode7 "," Episode7 "," Episode7 ", "Episode7"}, {"Episode8", "Episode8", "Episode8", "Episode8", "Episode8"}, {"Épisode 9", "Épisode 9", "Épisode 9", "Épisode 9", "Épisode 9" , "Episode9", "Episode9"}, { "Episode10", "Episode10", "Episode10", "Episode10", "Episode10", "Episode10", "Episode10", "Episode10"}

}; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle icicle) { 
    super.onCreate(icicle); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 

    setContentView(R.layout.main); 
    Log.i("ARRy lentgh_____________", " " + shades.length); 
    for (int n = 0; n < shades.length; n++) { 

     count.add(Integer.toString(shades[n].length)); 
     Log.i("item y lentgh_____________", " " + shades[n].length); 
    } 
    for (int n = 0; n < count.size(); n++) { 
     Log.i("List Elements are_____________", " " + count.get(n)); 
     // count.add(Integer.toString(shades[n].length)); 
    } 
    madapter= new ExpandableListAdapterDemo(this,createGroupList(),createChildList()); 
    SimpleExpandableListAdapter expListAdapter = new SimpleExpandableListAdapter(
      this, createGroupList(), // groupData describes the first-level 
             // entries 
      R.layout.parent_row, // Layout for the first-level entries 
      new String[] { "count" }, // Key in the groupData maps to 
             // display 
      new int[] { R.id.episode_count }, // Data under "colorName" key 
               // goes into this TextView 
      createChildList(), // childData describes second-level entries 
      R.layout.child_row, // Layout for second-level entries 
      new String[] { "shadeName" }, // Keys in childData maps to 
              // display 
      new int[] { R.id.childname } // Data under the keys above go 
              // into these TextViews 
    ); 

    setListAdapter(expListAdapter); 

    final ExpandableListView exlv = this.getExpandableListView(); 
    Log.i("exlv.getWidth():widthhhhhhhhh", "" + exlv.getWidth() + 50); 
    exlv.setIndicatorBounds(exlv.getWidth() + 30, exlv.getWidth() + 520); 


    exlv.setOnGroupExpandListener(new OnGroupExpandListener() { 

     @Override 
     public void onGroupExpand(int arg0) { 
      // TODO Auto-generated method stub 
      Log.i("Group Expand id is ", " " + exlv.getChildAt(arg0)+"Count is "+exlv.getChildCount() 
        + " "); 
      LinearLayout linearLayout= (LinearLayout) exlv.getChildAt(arg0); 
      //LinearLayout linearLayout= (LinearLayout)findViewById(R.layout.child_row); 
      Log.i("Linear layout is ", " " + linearLayout 
        + " "); 
      imageView= (ImageView)linearLayout.findViewById(R.id.imageView2); 

      Log.i("Image view id is ", " " + imageView 
        + " "); 

     } 
    }); 
    exlv.setOnGroupClickListener(new OnGroupClickListener() { 

     @Override 
     public boolean onGroupClick(ExpandableListView arg0, View arg1, 
       int arg2, long arg3) { 

      LinearLayout linearLayout= (LinearLayout) arg0.getChildAt(arg2); 

      imageView= (ImageView)linearLayout.findViewById(R.id.imageView2); 
      Log.i("Image view id is ", " " + imageView 
        + " "); 
      Log.i("View is", ";;;;;;;;;;;; " + arg1.findViewById(R.id.imageView2) 
        + " layout "+linearLayout+"image id on group "+imageView); 
      Toast.makeText(getBaseContext(), "Group clicked ", 
        Toast.LENGTH_SHORT).show(); 

      return false; 
     } 
    }); 

    exlv.setOnChildClickListener(new OnChildClickListener() { 

     public boolean onChildClick(ExpandableListView arg0, View arg1, 
       int arg2, int arg3, long arg4) { 


      Toast.makeText(ExpList.this, 
        "Child ItemClicked " + arg2 + " " + arg3, 
        Toast.LENGTH_SHORT).show(); 

      imageView = (ImageView)arg1.findViewById(R.id.imageView2); 
      Log.i("ImageView Value "," hi "+imageView.toString()); 
       imageView.setOnClickListener(new OnClickListener() { 

       @Override public void onClick(View arg0) { // TODO Auto-generated 
        Intent intent = new Intent(ExpList.this,DemoActivity.class); 
        startActivity(intent); 
      } }); 


      // TODO Auto-generated method stub 
      return false; 
     } 
    }); 

    /* 
    * imageView.setOnClickListener(new OnClickListener() { 
    * 
    * @Override public void onClick(View arg0) { // TODO Auto-generated 
    * method stub Intent intent = new 
    * Intent(ExpList.this,DemoActivity.class); startActivity(intent); } }); 
    */ 

    for (int n = 0; n < count.size(); n++) { 
     Log.i("Values of episode is ", " " + count.get(n)); 
    } 

} 
/** 
* Creates the group list out of the colors[] array according to the 
* structure required by SimpleExpandableListAdapter. The resulting List 
* contains Maps. Each Map contains one entry with key "colorName" and value 
* of an entry in the colors[] array. 
*/ 

private List createGroupList() { 
    ArrayList result = new ArrayList(); 

    Log.i("size of count is", " " + count.size()); 
    for (int i = 0; i < shades.length; i++) { 
     HashMap m = new HashMap(); 
     m.put("count", count.get(i)); 
     result.add(m); 
    } 
    return result; 
} 
/** 
* Creates the child list out of the shades[] array according to the 
* structure required by SimpleExpandableListAdapter. The resulting List 
* contains one list for each group. Each such second-level group contains 
* Maps. Each such Map contains two keys: "shadeName" is the name of the 
* shade and "rgb" is the RGB value for the shade. 
*/ 
private List createChildList() { 
    ArrayList result = new ArrayList(); 
    Log.i("two dim Array Size is ", " Size is " + shades.length); 
    for (int i = 0; i < shades.length; ++i) { 
     // Second-level lists 
     ArrayList secList = new ArrayList(); 
     for (int j = 0; j < shades[i].length; j++) { 

      HashMap child = new HashMap(); 
      child.put("shadeName", shades[i][j]); 
      secList.add(child); 
     } 
     result.add(secList); 
    } 
    return result; 
} 

public class ExpandableListAdapterDemo extends BaseExpandableListAdapter { 

    @Override 
    public boolean areAllItemsEnabled() { 
     return true; 
    } 
    private Context context; 
    private ArrayList<String> groups; 
    private ArrayList<ArrayList> children; 
     public ExpandableListAdapterDemo(Context context, List groups, List chiildren) 
     { 
      this.context = context; 
      this.groups = (ArrayList<String>) groups; 
      this.children = (ArrayList<ArrayList>) chiildren; 
     } 
     /** 
    * A general add method, that allows you to add a Vehicle to this list 
    * 
    * Depending on if the category opf the vehicle is present or not, the 
    * corresponding item will either be added to an existing group if it 
    * exists, else the group will be created and then the item will be 
    * added 
    * 
    * @param vehicle 
    */ 

    @Override 
    public Object getChild(int groupPosition, int childPosition) { 
     return children.get(groupPosition).get(childPosition); 
    } 

    @Override 
    public long getChildId(int groupPosition, int childPosition) { 
     return childPosition; 
    } 

    // Return a child view. You can load your custom layout here. 
    @Override 
    public View getChildView(int groupPosition, int childPosition, 
      boolean isLastChild, View convertView, ViewGroup parent) { 


     ImageView tv = (ImageView) convertView 
       .findViewById(R.id.imageView2); 
     tv.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       Log.i("hiiiiiiiiiiiiiiiii","image clicked"); 
       Intent intent = new Intent(ExpList.this, DemoActivity.class); 
       startActivity(intent); 
      } 
     }); 


     return convertView; 
    } 

    @Override 
    public int getChildrenCount(int groupPosition) { 
     return children.get(groupPosition).size(); 
    } 

    @Override 
    public Object getGroup(int groupPosition) { 
     return groups.get(groupPosition); 
    } 

    @Override 
    public int getGroupCount() { 
     return groups.size(); 
    } 

    @Override 
    public long getGroupId(int groupPosition) { 
     return groupPosition; 
    } 

    // Return a group view. You can load your custom layout here. 
    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, 
      View convertView, ViewGroup parent) { 
     // String group = (String) getGroup(groupPosition); 

     return convertView; 
    } 

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

    @Override 
    public boolean isChildSelectable(int arg0, int arg1) { 
     return true; 
    } 

} 

}

Answer 1

J'ai une solution pour vous, c'est tellement simple. Utilisons un tableau à deux dimensions pour afficher les données de votre adaptateur dans les vues, donc quand vous voulez accéder aux données d'un enfant pour changer quelque chose (peut-être une chaîne de textview, ressource d'image de Imageview, etc.), il vous suffit de supprimer l'élément du tableau à deux dimensions qui a la même position que dans votre liste expandelist, puis ajoutez un nouvel élément avec les données modifiées à cette position également. Puis appelez adapter.notifyDataSetChanged(); C'est un peu difficile à comprendre, alors voyez le code, il devrait ressembler à:

 childs.get(1).remove(1); 
    childs.get(1).add(1, new ChildData("changed textview", BitmapFactory.decodeResource(getResources(), R.drawable.no_avatar))); 
    adapter.notifyDataSetChanged();