Android画廊Gallery的使用

package org.ourunix.android.gallerytest; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Gallery; import android.widget.ImageView; public class GalleryTestActivity extends Activity { private Context mContext; private Gallery myGallery; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setView(); } public void setView(){ mContext = this; myGallery = (Gallery) findViewById(R.id.mygallery); myGallery.setAdapter(new ImagAdapter()); } public class ImagAdapter extends BaseAdapter{ private Integer[] imgRes = { R.drawable.p1, R.drawable.p2, R.drawable.p3 }; public ImagAdapter(){ } @Override public int getCount() { // TODO Auto-generated method stub return imgRes.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return imgRes[position]; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ImageView img; if (convertView == null){ img = new ImageView(mContext); convertView = img; convertView.setTag(img); }else { img = (ImageView) convertView.getTag(); } img.setImageResource(imgRes[position]); img.setLayoutParams(new Gallery.LayoutParams(200, 200)); img.setScaleType(ImageView.ScaleType.FIT_XY); return convertView; } } }