使用List<实体对象>来自定义适配器

针对项目需要要进行自定义适配器来设计，主要是因为的是在扫描本地文件，要创建对象来接受文件的name和文件的path，如果使用SimpleAdapter显然是不满足要求的，这里传递的List集合形式不对，所以这里使用自定义适配器来完成。

 

public voidinitData(){

    final List<VideoModel> videoList=getVideoFile(allVideoList, Environment.getExternalStorageDirectory());
    MyAdapter myAdapter=new MyAdapter($.getContext(),R.layout.line,videoList);
    videoListView.setAdapter(myAdapter);

    videoListView.setOnItemClickListener(newAdapterView.OnItemClickListener()
    {
        @Override
        public void onItemClick(AdapterView<?> parent, View view,int position,longid)
        {
                String filepath = videoList.get(position).getVideoPath();
                Intent intent = new Intent();
                intent.putExtra("filepath",filepath);
                intent.setClass($.getContext(), PlayActivity.class);
                startActivity(intent);
        }
    });
}

 

 

classMyAdapter extends BaseAdapter{
    private Context context;//上下文
    private int resourceId;//列表项的布局文件
    private List<VideoModel>list3;

    public MyAdapter(Context context,int resourceId, List<VideoModel> list3) {
        this.context= context;
        this.resourceId= resourceId;
        this.list3= list3;
    }

    @Override
    public int getCount() {
        int count=0;
        if(list3!=null){
            return list3.size();
        }
        return count;
    }

    @Override
    public Object getItem(intposition) {
        return list3.get(position);
    }

    @Override
    public long getItemId(intposition) {
        return position;
    }

    @Override
    public View getView(intposition, ViewconvertView, ViewGroup parent) {
        View view=null;
        if(convertView!=null){
            view=convertView;
        }else{
            view = LayoutInflater.from(context).inflate(resourceId, parent,false);
        }
        VideoHolder holder =(VideoHolder) view.getTag();
        if(holder==null){
            holder=new VideoHolder();
            holder.textView=(TextView)view.findViewById(R.id.file_name);
            holder.image=(ImageView)view.findViewById(R.id.icon);
            view.setTag(holder);
        }

        holder.textView.setText(list3.get(position).getVideoName().toString());
        holder.image.setImageResource(R.drawable.file);

        return view;
    }

    class VideoHolder{
        TextView textView;
        ImageView image;
    }
}