blocks|key|1294801|text|如果您想要更快、更有效地下载映像，那么就有多种方法可以下载一个文件(虽然对于小文件来说开销太大了)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1294802|然而，主要的瓶颈是用户的互联网带宽。我想您现在的实现是每次打开应用程序时都下载这些图像。这是没有效率的。您可以做的是缓存图像和检查更新。|1294803|例如，当您打开应用程序时：|1294804|加载缓存的images‘(如果是新安装，那么应用程序包中也应该有缓存的图像)|unordered-list-item|1294805|检查背景中的图像更新|1294806|如果有更新，请下载|1294807|下载完毕后，更新缓存，并在需要时替换加载的映像。|1294808|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$]]|$1|I|3|J|5|H|7|U|8|@]|9|@]|A|$]]|$1|K|3|L|5|H|7|V|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|W|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|P|$]]

If you want to download images faster and more efficiently, then there are methods like multiple connections to download a file (Too much overhead for small files though). 

However, the main bottleneck is the users' internet bandwidth. I guess your current implementation is downloading those images every time open your app. This is not efficient. What you can do is that caching the images and checking for update.

For example, when you open your app:

<ul>
<li>Load the cached images` (If it is fresh install, then there should also be cached images in your app package)</li>
<li>check for image update at the background</li>
<li>If there is an update, download them</li>
<li>When you finish downloading, update your cache and replace the loaded images if needed.</li>
</ul>

blocks|key|2533926|text|试试谷歌推荐的幻灯片库。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2533927|与毕加索图书馆相比，它有更多的功能。|2533928|将此依赖项添加到分级中|2533929|compile+'com.github.bumptech.glide:glide:3.5.2'|code-block|syntax|javascript|2533930|使用以下代码加载图像|2533931|Glide.with(context)
.load("//inthecheesefactory.com/uploads/source/glidepicasso/cover.jpg")
.into(yourImageView);|2533932|参考-+https://inthecheesefactory.com/blog/get-to-know-glide-recommended-by-google/en|2533933|entityMap|0|LINK|mutability|MUTABLE|url|https://inthecheesefactory.com/blog/get-to-know-glide-recommended-by-google/en^0|7|3|0|0|0|0|0|0|4|26|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|18|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|19|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1A|8|@]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|U|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]]]

Try the Glide library recommended by google.

It have more features compared to Picasso library.

Add this dependency in your gradle 

<pre><code>compile 'com.github.bumptech.glide:glide:3.5.2'
</code></pre>

Load your image using following code

<pre><code>Glide.with(context)
.load("//inthecheesefactory.com/uploads/source/glidepicasso/cover.jpg")
.into(yourImageView);
</code></pre>

Reference - <a href="https://inthecheesefactory.com/blog/get-to-know-glide-recommended-by-google/en" rel="nofollow">https://inthecheesefactory.com/blog/get-to-know-glide-recommended-by-google/en</a>

blocks|key|1291637|text|使用多线程下载:您可以使Asynctask与myTask.execute(AsyncTask.THREAD_POOL_EXECUTOR)并行运行。这允许更多的下载在同一时间。|type|ordered-list-item|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1291638|使服务器内容传递更快:在S3前面添加(+CDN)。这加快了用户的下载速度。|1291639|首先，流将文件下载到磁盘缓存中，然后解码为只需要解析的位图。如果您不需要显示全尺寸的图像，这将节省大量的RAM。由于图像是缓存的，对同一图像的重复请求将不会使用网络资源。|1291640|对于#1和#3，只需使用壁画|unstyled|1291641|entityMap|0|LINK|mutability|MUTABLE|url|http://frescolib.org/^0|M|1A|0|0|0|C|2|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|Z|8|@]|D|@$9|10|A|11|1|12]]|E|$]]|$1|M|3|-4|5|L|7|13|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

<ol>
<li>Use multi threaded downloads: You can make Asynctask's run in parallel with <code>myTask.execute(AsyncTask.THREAD_POOL_EXECUTOR)</code>. This allows more downloads in same time.</li>
<li>Make server content delivery faster: Add Amazon cloudfront (a CDN) in front of S3. This speeds up downloads for users.</li>
<li>First stream downloading files to a disk cache, then decode into bitmaps of only required resolution. This saves a lot of RAM if you need not show images at full size. Since images are cached, repeated requests for same image will not use network resources.</li>
</ol>

For #1 and #3, simply use <a href="http://frescolib.org/" rel="nofollow">Fresco</a>

blocks|key|1294851|text|使用毕加索+--它是一个易于使用的库|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1294852|步骤1:在gradle中添加依赖项|1294853|compile+'com.squareup.picasso:picasso:2.5.2'|code-block|syntax|javascript|1294854|步骤2:在活动中使用|1294855|Picasso.with(context).load("http://i.imgur.com/DvpvklR.png").into(imageView);|1294856|毕加索处理背景中的所有重物。为了更快地进行图像检索，本文还对图像进行缓存。此外，毕加索在默认情况下进行并行下载。|1294857|entityMap|0|LINK|mutability|MUTABLE|url|http://square.github.io/picasso/^0|2|3|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|15|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

Use <a href="http://square.github.io/picasso/" rel="nofollow">Picasso</a> - Its a easy to use library by 

Step 1: Add dependency in gradle

<pre><code>compile 'com.squareup.picasso:picasso:2.5.2'
</code></pre>

Step 2: Use in activity

<pre><code>Picasso.with(context).load("http://i.imgur.com/DvpvklR.png").into(imageView);
</code></pre>

Picasso handles all the heavy lifting in the background. It also caches the images for faster image retrieval in the future. Also, Picasso does parallel downloads by default.

In my app, i repeat an AysnceTask that downloads images from my AWS bucket but they take a little bit to download (1/2 seconds usually) and when I am downloading 10 images it adds up and makes the user experience worse.

My question is: is there a faster way to download images from AWS S3? 

Android code:

<pre><code>private class DownloadImageTask extends AsyncTask&lt;String, Void, Bitmap&gt; {

 protected Bitmap doInBackground(String... urls) {

 String PhotoURL = "https://s3.amazonaws.com/bucket/Images/" + productForImages;
 Bitmap mIcon11 = null;
 try {
 InputStream in = new java.net.URL(PhotoURL).openStream();
 mIcon11 = BitmapFactory.decodeStream(in);
 } catch (Exception e) {
 Log.e("Error", e.getMessage());
 e.printStackTrace();
 }

 return mIcon11;
 }

 protected void onPostExecute(Bitmap result) {

 productColumn = 5;
 productImages[productRow][productColumn] = result;

 }
}
</code></pre>

Using different services (like AWS), a GitHub, or another library to speed up downloading is possible!

download images faster and more efficently

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

在我的应用程序中，我重复一个AysnceTask，它从我的AWS桶下载图像，但是它们需要一点点下载(通常是1/2秒)，当我下载10张图片时，它会加起来，使用户的体验更糟。我的问题是:是否有更快的方法从AWS S3下载图像？Android代码：private class DownloadImageTask extends...

问更快更有效地下载图像
EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问更快更有效地下载图像EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问更快更有效地下载图像
EN