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  1.     public View getView(int position, View convertView, ViewGroup parent) {
  2.  
  3. 		final ViewHolder holder;
  4.  
  5. 		if(convertView == null) {
  6. 			convertView = layoutInflater.inflate(R.layout.list_entry , null);
  7. 			holder = new ViewHolder();
  8. 			holder.title = (TextView) convertView.findViewById( R.id.title_text);
  9. 			holder.image = (ImageView) convertView.findViewById(R.id.image_view);
  10. 			holder.progressBar = (ProgressBar) convertView.findViewById( R.id.progress_bar);
  11. 			convertView.setTag(holder);
  12. 		}
  13. 		else{
  14. 			holder = (ViewHolder)convertView.getTag();
  15. 		}
  16.  
  17. 		if( position == 4){
  18. 			String imageUrl = "http://w...content-available-to-author-only...m.cn/f/edu/077/18/0718_wall_09_lake_of_the_sun_1600.jpg";
  19.  
  20.             if( imageCache.isCached( imageUrl) == false){//如果圖片沒有暫存下載圖片
  21. 				imageCache.loadUrlPic(imageUrl,h);
  22. 			}
  23. 			else if ( imageCache.isDownloadFine(imageUrl) == true){//如果已經下載完成，就顯示圖片並把ProgressBar隱藏
  24. 				holder.image.setImageBitmap(ImageCache.getImage(imageUrl));
  25. 				holder.progressBar.setVisibility(View.GONE);
  26. 				holder.image.setVisibility(View.VISIBLE);	
  27. 			}else{
  28. 				//這裡是下載中，什麼事都不用做
  29. 			}
  30. 		}
  31. 		else{
  32. 			//沒圖就不用顯示Loading 的畫面
  33. 			holder.progressBar.setVisibility(View.GONE);
  34. 		}
  35.  
  36.         //Declare: String[] titles = new String[100];
  37. 		holder.title.setText( titles[position]);   
  38.  
  39. 		return convertView;
  40. 	}
  41.  
  42. 	class ViewHolder{
  43. 		TextView title;           // title
  44. 		ImageView image;          // show the image at position 4
  45. 		ProgressBar progressBar;  // for loading
  46. 	}
  47.  
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https://ideone.com/cZMzm5
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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