毕加索下载位图的回调方法是什么？

Question

我正在使用此库（https://github.com/androidquery/androidquery）进行图像下载和显示。有一个回调方法。在这个方法里面，我检查位图是否大于屏幕大小。如果位图大于屏幕大小，那么我已将位图分成5个位图部分并以5个图像视图显示，因此分辨率很好。

final AQuery[] aq = {new AQuery(hh.imageview), new AQuery(hh.imageview3), new AQuery(hh.thumbnail3), 
         new AQuery(hh.thumbnail4), new AQuery(hh.thumbnail5), new AQuery(hh.thumbnail6)}; 
       final Bitmap[] bitmap = new Bitmap[6]; 
       aq[0].id(hh.imageview).image(url, false, true, 0, 0, new BitmapAjaxCallback() { 

        @Override 
        public void callback(String url, ImageView iv, Bitmap bm, AjaxStatus status) { 

         if(bm != null) { 
          if(bm.getHeight()>=maxTextureSize){ 
           int h = bm.getHeight(); 
           int w = bm.getWidth(); 

           /* bitmap[0] = Bitmap.createBitmap(bm, 0 , 0, w, h/6); 
           iv.setImageBitmap(bitmap[0]); 
           bitmap[1] = Bitmap.createBitmap(bm, 0 , bitmap[0].getHeight(), 
             w, h/6); 
           aq[1].id(hh.imageview3).image(bitmap[1]); 
           bitmap[2] = Bitmap.createBitmap(bm, 0 , bitmap[0].getHeight() + bitmap[1].getHeight(), 
             w, h/6); 
           aq[2].id(hh.thumbnail3).image(bitmap[2]); 
           bitmap[3] = Bitmap.createBitmap(bm, 0, bitmap[0].getHeight() + bitmap[1].getHeight() + bitmap[2].getHeight(), 
             w, h/6); 
           aq[3].id(hh.thumbnail4).image(bitmap[3]); 
           bitmap[4] = Bitmap.createBitmap(bm, 0, bitmap[0].getHeight() + bitmap[1].getHeight() + bitmap[2].getHeight()+bitmap[3].getHeight(), 
             w, h/6); 
           aq[4].id(hh.thumbnail5).image(bitmap[4]); 
           bitmap[5] = Bitmap.createBitmap(bm, 0, bitmap[0].getHeight() + bitmap[1].getHeight() + bitmap[2].getHeight()+bitmap[3].getHeight()+bitmap[4].getHeight() 
             , w, h/6); 
           aq[5].id(hh.thumbnail6).image(bitmap[5]);*/ 
          /* } 
          else if(bm.getWidth()>=maxTextureSize){ 
           bm =Bitmap.createScaledBitmap(bm, maxTextureSize, bm.getHeight(), true); 
           iv.setImageBitmap(bm); 
          } else { 
           iv.setImageBitmap(bm); 
           hh.imageview3.setImageDrawable(null); 
           hh.thumbnail3.setImageDrawable(null); 
           hh.thumbnail4.setImageDrawable(null); 
           hh.thumbnail5.setImageDrawable(null); 
           hh.thumbnail6.setImageDrawable(null); 
          } 
         } 
        } 
       }); 

       if(bitmap[0] != null) { 
        bitmap[0].recycle(); 
        bitmap[0] = null; 
       } 
       if(bitmap[1] != null) { 
        bitmap[1].recycle(); 
        bitmap[1] = null; 
       } 
       if(bitmap[2] != null) { 
        bitmap[2].recycle(); 
        bitmap[2] = null; 
       } 
       if(bitmap[3] != null) { 
        bitmap[3].recycle(); 
        bitmap[3] = null; 
       } 
       if(bitmap[4] != null) { 
        bitmap[4].recycle(); 
        bitmap[4] = null; 
       } 
       if(bitmap[5] != null) { 
        bitmap[5].recycle(); 
        bitmap[5] = null; 
       } 

现在我已经移动毕加索（http://square.github.io/picasso/）库。而且我在这个库中的逻辑上也看起来同样。但无法找到我可以做到这一点？请帮帮我。

Answer 1

根据https://square.github.io/picasso/2.x/picasso/com/squareup/picasso/RequestCreator.html#into-android.widget.ImageView-com.squareup.picasso.Callback-

的.into方法提供这是一个回调成功和失败的第二参数。

public void into(android.widget.ImageView target, 
      Callback callback) 

您也可以使用改变大小.transform(new ImageTransformation())方法

Answer 2

Picasso.with(MainActivity.this) 
      .load(imageUrl) 
      .into(imageView, new com.squareup.picasso.Callback() { 
         @Override 
         public void onSuccess() { 
          //do smth when picture is loaded successfully 

         } 

         @Override 
         public void onError() { 
          //do smth when there is picture loading error 
         } 
        });