title: Only one image is appearing in every grid of gridview
body: <p>I had developed an application where I want to display images inside grid view from specific folder of sd card. The application is working but only 1st image from folder is appearing in every grid, while I want all images should display. I am not getting where I went wrong.
  Below, I am posting my code:</p>
  
  <p><b>Album Activity:</b></p>
  
  <pre><code>public class Album3Activity extends Activity {
  static File [] mediaFiles;
  static File imageDir;
  GridView gridView;
  ImageAdapter adapter;
  Intent in;
  public static final String TAG = "Album3Activity";
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.grid);
      prepareList();
      adapter = new ImageAdapter(this, mediaFiles);
      gridView = (GridView)findViewById(R.id.gridview);
      gridView.setAdapter(adapter);
      gridView.setOnItemClickListener(new OnItemClickListener() {
  
          public void onItemClick(AdapterView&lt;?&gt; arg0, View arg1, int position,
                  long arg3) {
              in = new Intent(getApplicationContext(), FullScreen.class);
              in.putExtra("id", position);
              startActivity(in);
          }
      });
  }//onCreate
  
  public static Bitmap prepareList() {
      imageDir = new File(Environment.getExternalStorageDirectory().toString()+
               "/diplomat");
      mediaFiles = imageDir.listFiles();
      Bitmap bmp = null;
      for(File imagePath:mediaFiles){
          try{
              bmp = BitmapFactory.decodeStream(imagePath.toURL().openStream());
          }catch(Exception e){
              Log.d(TAG, "Exception: "+e.toString());
          }//catch
      }//for
      Log.d(TAG, "prepareList() called");
      return bmp;
  }//prepareList
  </code></pre>
  
  <p>}//class</p>
  
  <p><b>Image Adapter:</b></p>
  
  <pre><code>public class ImageAdapter extends BaseAdapter{
  Activity act;
  File[] mFiles;
  public static final String TAG = "ImageAdapter";
  public ImageAdapter(Activity act, File[] mFiles){
      super();
      this.act = act;
      this.mFiles = mFiles;
  }//ImageAdapter
  
  public int getCount() {
      return mFiles.length;
  }//getCount
  
  public Object getItem(int postion) {
      return mFiles[postion];
  }//getItem
  
  public long getItemId(int position) {
      return 0;
  }//getItemId
  
  public static class ViewHolder{
      ImageView iv;
  }
  
  public View getView(int position, View convertView, ViewGroup parent) {
      ViewHolder view;
      LayoutInflater li = act.getLayoutInflater();
      if(convertView == null){
          view = new ViewHolder();
          convertView = li.inflate(R.layout.gridview_row, null);
          view.iv = (ImageView)convertView.findViewById(R.id.imageView1);
          convertView.setTag(view);
      }//if
      else{
          view = (ViewHolder)convertView.getTag();
      }//else
      Bitmap bmp = Album3Activity.prepareList();
      view.iv.setImageBitmap(bmp);
      Log.d(TAG, "getView called");
      return convertView;
  }//getView
  </code></pre>
  
  <p>}//ImageAdapter</p>