列出目录下的所有图片

public class GalleryTestActivity extends Activity {  File photos[];  private static String TAG = "GalleryTest";     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);         File f = new File("/sdcard/pics1");         photos = f.listFiles(new FilenameFilter() {      @Override    public boolean accept(File dir, String filename) {     return filename.endsWith("jpg");    }   });         String fileList = "";               for (File aFile : photos) {          fileList += aFile.getName() + "\n";         }         TextView v = (TextView)findViewById(R.id.FileList);         v.setText(fileList);         Gallery gallery = (Gallery)findViewById(R.id.Gallery);         gallery.setAdapter(new AddImgAdp(this));     }     public class AddImgAdp extends BaseAdapter {         int GalItemBg;         private Context cont;         public AddImgAdp(Context c) {             cont = c;             TypedArray typArray = obtainStyledAttributes(R.styleable.GalleryTheme);             GalItemBg = typArray.getResourceId(R.styleable.GalleryTheme_android_galleryItemBackground, 0);             typArray.recycle();         }         public int getCount() {             return photos.length;         }         public Object getItem(int position) {             return position;         }         public long getItemId(int position) {             return position;         }         public View getView(int position, View convertView, ViewGroup parent) {          ImageView imgView;          if (convertView == null)           imgView = new ImageView(cont);          else           imgView = (ImageView)convertView;            
String filename = photos[position].getAbsolutePath();
             Log.i(TAG, "Loading File " + filename);             Bitmap bMap = BitmapFactory.decodeFile(filename);             imgView.setImageBitmap(bMap);             imgView.setLayoutParams(new Gallery.LayoutParams(120, 90));             imgView.setScaleType(ImageView.ScaleType.FIT_XY);             imgView.setBackgroundResource(GalItemBg);             return imgView;         }     } }

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