picasso总结

 1 public class UMDocApplication extends Application {
 2     private Picasso picasso = null;
 3     /**获取Picasso对象**/
 4     public Picasso getPicasso(){
 5         if(picasso == null)
 6             cancelPicassoCache();
 7         return picasso;
 8     }
 9     /**清除缓存并创建对象**/
10     public void cancelPicassoCache(){
11         if(picasso != null)
12             picasso = null;
13         LruCache lruCache = new LruCache(getApplicationContext());
14         lruCache.clear();
15         Picasso.Builder builder = new           Picasso.Builder(getApplicationContext()).memoryCache(lruCache);
16         lruCache.clear();
17         picasso = builder.build();
18     }
19 }

1 if (UMDocApplication.getInstance().head != null) {
2             UMDocApplication.getInstance().getPicasso()
3                     .load(UMDocApplication.getInstance().head).into(img_head);
4         }