Android BaseAdapter 例子

文章分类:移动开发
BaseAdapter
 
Java代码 
public class RecentAdapter extends BaseAdapter { 
 
    private class RecentViewHolder { 
        TextView appName; 
        ImageView appIcon; 
        TextView appSize; 
    } 
 
    private List<ResolveInfo> mAppList; 
    private LayoutInflater mInflater; 
    private PackageManager pm; 
 
    public RecentAdapter(Context c, List<ResolveInfo> appList, 
            PackageManager pm) { 
        mAppList = appList; 
        this.pm = pm; 
        mInflater = (LayoutInflater) c 
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 
     
    public void clear(){ 
        if(mAppList!=null){ 
            mAppList.clear(); 
        } 
    } 
 
    public int getCount() { 
        return mAppList.size(); 
    } 
 
    @Override 
    public Object getItem(int position) { 
        return mAppList.get(position); 
    } 
 
    @Override 
    public long getItemId(int position) { 
        // TODO Auto-generated method stub 
        return position; 
    } 
 
    public View getView(int position, View convertView, ViewGroup parent) { 
        RecentViewHolder holder; 
        if (convertView == null) { 
            convertView = mInflater.inflate(R.layout.app_info_item, null); 
            holder = new RecentViewHolder(); 
            holder.appName = (TextView) convertView.findViewById(R.id.app_name); 
            holder.appIcon = (ImageView) convertView 
                    .findViewById(R.id.app_icon); 
            holder.appSize = (TextView) convertView.findViewById(R.id.app_size); 
            convertView.setTag(holder); 
        } else { 
            holder = (RecentViewHolder) convertView.getTag(); 
        } 
        ResolveInfo appInfo = mAppList.get(position); 
        if (appInfo != null) {