Android ExpandableListview

Question

Любой учебник для ExpandableListview Для андроида с анимацией Fold? Я использую этот адаптер, но это не гладкая я не знаю, почему, какие-либо предложения для гладкого адаптера и как я могу включать Fold анимацию в то время как коллапс и расширить

Мой адаптер:

public class Customlistadapter extends BaseExpandableListAdapter { 

List<CategoriesObject> categoriesObjectList; 

Context context; 

ImageView rightimage; 
ImageView iconImage; 
public LayoutInflater inflater; 
public serviceHelper serviceHandler; 
ImageLoader imgloader; 

public Customlistadapter(Activity context, List<CategoriesObject> categoriesObjectList) { 
    // super(context, R.layout.list_content_row); 
    // TODO Auto-generated constructor stub 
    this.categoriesObjectList = categoriesObjectList; 
    this.context = context; 
    inflater = context.getLayoutInflater(); 
    imgloader = new ImageLoader(context); 
} 

@Override 
public ServiceObject getChild(int groupPosition, int childPosition) { 
    List<ServiceObject> chList = categoriesObjectList.get(groupPosition).services; 
    return chList.get(childPosition); 
} 

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

@Override 
public View getChildView(int groupPosition, int childPosition, 
         boolean isLastChild, View convertView, ViewGroup parent) { 

    ServiceObject child = (ServiceObject) getChild(groupPosition, childPosition); 
    if (convertView == null) { 
     LayoutInflater infalInflater = (LayoutInflater) context 
       .getSystemService(context.LAYOUT_INFLATER_SERVICE); 
     convertView = infalInflater.inflate(R.layout.servicelist_content_row, null); 
    } 

    ServicesManager.setContext(this.context); 
    if(ServicesManager.serviceIsSelected(child)) 
    { 
     convertView.findViewById(R.id.menutitle).setBackgroundColor(Color.parseColor("#CC0fcb9e")); 
     RotateAnimation anim = new RotateAnimation(0f,45f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 
       0.5f); 
     // Step 2: Set the Animation properties 

     anim.setRepeatCount(0); 
     anim.setInterpolator(new LinearInterpolator()); 
     anim.setDuration(1200); 
     anim.setFillAfter(true); 

     // Step 3: Start animating the image 
     ImageView leftimage = (ImageView)convertView.findViewById(R.id.leftimage); 
     leftimage.startAnimation(anim); 
    } 
    else 
    { 
     convertView.findViewById(R.id.menutitle).setBackgroundColor(Color.parseColor("#CC0fcb9e")); 
     RotateAnimation anim = new RotateAnimation(45f, 0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 
       0.5f); 
     // Step 2: Set the Animation properties 

     anim.setRepeatCount(0); 
     anim.setInterpolator(new LinearInterpolator()); 
     anim.setDuration(1200); 
     anim.setFillAfter(true); 

     // Step 3: Start animating the image 
     ImageView leftimage = (ImageView)convertView.findViewById(R.id.leftimage); 
     leftimage.startAnimation(anim); 
     convertView.findViewById(R.id.menutitle).setBackgroundColor(Color.parseColor("#CC2e5c78")); 
    } 



    final TextView tv = (TextView) convertView.findViewById(R.id.title); 

    TextView price = (TextView) convertView.findViewById(R.id.priceTxt); 
    tv.setText(child.servicename.toString()); 
    price.setText(String.valueOf(child.serviceprice)); 

    return convertView; 
} 

@Override 
public int getChildrenCount(int groupPosition) { 
    List<ServiceObject> chList = categoriesObjectList.get(groupPosition).services; 
    return chList.size(); 
} 

@Override 
public CategoriesObject getGroup(int groupPosition) { 
    return categoriesObjectList.get(groupPosition); 
} 

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

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

@Override 
public View getGroupView(int groupPosition, boolean isExpanded, 
         View convertView, ViewGroup parent) { 
    CategoriesObject group = (CategoriesObject) getGroup(groupPosition); 
    if (convertView == null) { 
     LayoutInflater inf = (LayoutInflater) context 
       .getSystemService(context.LAYOUT_INFLATER_SERVICE); 
     convertView = inf.inflate(R.layout.list_content_row, null); 
    } 
    TextView tv = (TextView) convertView.findViewById(R.id.title); 
    ImageView iconImage = (ImageView)convertView.findViewById(R.id.iconImage); 



    imgloader.DisplayImage(group.catimage,iconImage); 
    // new ImageLoadTask(group.catimage, iconImage).execute(); 

    tv.setText(group.catname); 
    return convertView; 
} 

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

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


private static class ChildHolder { 
    TextView title; 
    TextView hint; 
} 

public interface serviceHelper { 
    public void serviceClicked(int grouppos, int childpos); 
} 

}

Answer 1

Отметьте: Animated Expandable ListView