Glide是否排队每个图像请求？滚动时,Recyclerview加载速度非常慢

Question

我使用GridLayoutManager使用Glide 3.6 + RecyclerView在我们的应用程序中看到了很长的图像加载时间.图像大约为20kb-40kb.似乎滑动将所有请求排队,导致图像在开始向下滚动列表后需要花费很长时间才能加载.我已经附加了GenericRequest类的日志.

V/GenericRequest? finished setup for calling load in 0.170291 this: 249721749
V/GenericRequest? finished onSizeReady in 0.36724999999999997 this: 249721749
V/GenericRequest? finished run method in 0.763083 this: 249721749
V/GenericRequest? Got onSizeReady in 0.041249999999999995 this: 991315424
V/GenericRequest? finished setup for calling load in 0.15479199999999999 this: 991315424
V/GenericRequest? finished onSizeReady in 0.30008399999999996 this: 991315424
V/GenericRequest? finished run method in 0.499959 this: 991315424
V/GenericRequest? Got onSizeReady in 0.060584 this: 1029510845
V/GenericRequest? finished setup for calling load in 0.200625 this: 1029510845
V/GenericRequest? finished onSizeReady in 0.39233399999999996 this: 1029510845
V/GenericRequest? finished run method in 0.670084 this: 1029510845
V/GenericRequest? Got onSizeReady in 0.048374999999999994 this: 516458536
V/GenericRequest? finished setup for calling load in 0.188666 this: 516458536
V/GenericRequest? finished onSizeReady in 0.379916 this: 516458536
V/GenericRequest? finished run method in 0.654083 this: 516458536
V/GenericRequest? Resource ready in 1012.49325 size: 2.18359375 fromCache: false this: 671303046
V/GenericRequest? Got onSizeReady in 0.073833 this: 356666200
V/GenericRequest? finished setup for calling load in 0.240667 this: 356666200
V/GenericRequest? finished onSizeReady in 0.460792 this: 356666200
V/GenericRequest? finished run method in 0.780708 this: 356666200
V/GenericRequest? Got onSizeReady in 0.064583 this: 347417463
V/GenericRequest? finished setup for calling load in 0.242583 this: 347417463
V/GenericRequest? finished onSizeReady in 0.45758299999999996 this: 347417463
V/GenericRequest? finished run method in 0.7521249999999999 this: 347417463
V/GenericRequest? Got onSizeReady in 0.142833 this: 671303046
V/GenericRequest? finished setup for calling load in 0.38966599999999996 this: 671303046
V/GenericRequest? finished onSizeReady in 0.703708 this: 671303046
V/GenericRequest? finished run method in 1.851125 this: 671303046
V/GenericRequest? Got onSizeReady in 0.056957999999999995 this: 634418527
V/GenericRequest? finished setup for calling load in 0.21787499999999999 this: 634418527
V/GenericRequest? finished onSizeReady in 0.443083 this: 634418527
V/GenericRequest? finished run method in 0.7567499999999999 this: 634418527
V/GenericRequest? Resource ready in 3443.041335 size: 2.18359375 fromCache: false this: 249721749
V/GenericRequest? Resource ready in 4110.604794 size: 3.8623809814453125 fromCache: false this: 1054166306
V/GenericRequest? Resource ready in 3824.033544 size: 3.8623809814453125 fromCache: false this: 991315424
V/GenericRequest? Resource ready in 3773.0562109999996 size: 3.8623809814453125 fromCache: false this: 1029510845
V/GenericRequest? Resource ready in 4542.90796 size: 2.18359375 fromCache: false this: 516458536
V/GenericRequest? Resource ready in 4171.866168 size: 3.8623809814453125 fromCache: false this: 634418527
V/GenericRequest? Resource ready in 4474.170752 size: 3.8623809814453125 fromCache: false this: 356666200
V/GenericRequest? Resource ready in 4496.104085 size: 2.18359375 fromCache: false this: 671303046
V/GenericRequest? Resource ready in 4814.625126999999 size: 2.18359375 fromCache: false this: 347417463

想知道是否有人能够提供一些有关问题的见解.也许它是调整视图大小所需的时间？我match_parent用于视图的宽度和约固定的高度200dp.

使用加载图像

Glide.with(fragmentContext)
          .load(imageUrl)
          .centerCrop()
          .placeholder(R.drawable.placeholder)
          .into(viewHolder.productImage);

XML

<ImageView
      android:id="@+id/product_image"
      android:layout_width="match_parent"
      android:layout_height="@dimen/product_image_height" (208dp)
      android:layout_gravity="top"
      android:background="@color/placeholder_bg"
      />

编辑:根据@VladimirMironov评论.我已经更新了池,并在视图被回收时清除了待处理的负载.这似乎在滚动快速时有所帮助.在查看测量时,是否为视图使用"match_parent"提供覆盖是否有任何好处？有些情况下,视图几乎不会显示5秒钟.

Answer 1

添加以下行，您将看到改进

recyclerView.setHasFixedSize(true);
yourAdapter.setHasStableIds(true);//recycler adapter

覆盖 onViewRecycled() 并清除之前的 Glide 请求

Glide.with(imageHolder.preview.getContext()).clear(imageHolder.preview);