BaseAdapter优化问题

public class baseAdapterActivity1 extends Activity{

	LayoutInflater li;

	ViewHolder vh=new ViewHolder();

	ListView lv;

	int []pp={R.drawable.b,R.drawable.bg4,R.drawable.m,R.drawable.m2,R.drawable.m3,R.drawable.m8,R.drawable.p,R.drawable.psb};

@Override

protected void onCreate(Bundle savedInstanceState) {

	// TODO Auto-generated method stub

	super.onCreate(savedInstanceState);

	setContentView(R.layout.baselist);

	lv=(ListView) findViewById(R.id.b_lv);

	li=getLayoutInflater();

	vh.cont=li.inflate(R.layout.b_item, null);

	vh.tv=(TextView) vh.cont.findViewById(R.id.b_tv);

	vh.iv=(ImageView) vh.cont.findViewById(R.id.b_iv);

	lv.setAdapter(new BaseAdapter() {

		

		@Override

		public View getView(int position, View convertView, ViewGroup parent) {

			// TODO Auto-generated method stub

			View v=vh.cont;

			vh.tv.setText("图片"+(position+1));

			vh.iv.setImageResource(pp[position]);

			System.out.println(position);

			return v;

		}

		

		@Override

		public long getItemId(int position) {

			// TODO Auto-generated method stub

			return position;

		}

		

		@Override

		public Object getItem(int position) {

			// TODO Auto-generated method stub

			return null;

		}

		

		@Override

		public int getCount() {

			// TODO Auto-generated method stub

			return pp.length;

		}

	});

	lv.setOnItemClickListener(new OnItemClickListener() {



		@Override

		public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

				long arg3) {

			// TODO Auto-generated method stub

			Intent in=new Intent("look");

			in.putExtra("pp", pp);

			in.putExtra("p", arg2);

			startActivity(in);

		}

	});

	

}

 	static class ViewHolder{

 		View cont;

 		TextView tv;

 		ImageView iv;

 	}

}