LayoutInflater对象的创造

public class GridViewActivity2 extends Activity {    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.gridview2);        GridView gridview = (GridView) findViewById(R.id.gridview1gridview);        gridview.setBackgroundResource(R.drawable.bg);        gridview.setAdapter(new ImageAdapter2(this));        gridview.setOnItemClickListener(new OnItemClickListener() {            public void onItemClick(AdapterView<?> parent, View v,                    int position, long id) {                Toast.makeText(GridViewActivity2.this,                        "你选择了" + (position + 1) + " 号图片", Toast.LENGTH_SHORT)                        .show();            }        });    }    }class ImageAdapter2 extends BaseAdapter {    private Context mContext;    private Integer[] mImageIds = { R.drawable.android1,            R.drawable.android2, R.drawable.android3, R.drawable.android4,            R.drawable.ic_launcher, R.drawable.computer, R.drawable.vs,            R.drawable.gc, R.drawable.eclipse, R.drawable.pdf,            R.drawable.word, R.drawable.war, R.drawable.net };    public ImageAdapter2(Context c) {        mContext = c;    }    public int getCount() {        return mImageIds.length;    }    public Object getItem(int position) {        return null;    }    public long getItemId(int position) {        return 0;    }    public View getView(int position, View convertView, ViewGroup parent) {        ImageView imageView = null;        TextView textView = null;        if (convertView == null) {                        LayoutInflater inflater = LayoutInflater.from(new GridViewActivity2());             convertView = (View) inflater.inflate(R.layout.griditem2, null);        }                imageView = (ImageView) convertView                .findViewById(R.id.griditem2imageview);        textView = (TextView) convertView                .findViewById(R.id.griditem2textview);        imageView.setImageResource(mImageIds[position]);        imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);        textView.setText("title");        return convertView;    }}