背景的LinearLayout和Web图像 [英] LinearLayout background and images from web

问题描述

我从互联网上得提取图像并应用它们作为一个的LinearLayout的背景 - 这可能吗？我还没有看到这方面的任何适当的方法呢。

I gotta extract images from internet and apply them as a LinearLayout's background - is it possible ? I haven't seen any appropriate methods for this yet.

推荐答案

当然可以。

刚刚得到的图像的InputStream：

Just get the InputStream of the image:

InputStream is = (InputStream) new URL(url).getContent();

从流获取绘制对象：

Get the Drawable from the stream:

Drawable d = Drawable.createFromStream(is, "src name");

然后设置的LinearLayout背景绘制对象：

Then set the LinearLayout Background Drawable:

linearLayout.setBackgroundDrawable(d);

这实际上是图像直接从流设置。您可能需要使用的AsyncTask拉下绘制的背景和设置算账：
http://developer.android.com/reference/android/os/AsyncTask.html

This actually sets the image directly from the stream. You may want to use an ASyncTask to pull down the drawable in the background and set it afterwards: http://developer.android.com/reference/android/os/AsyncTask.html

您可能想偷懒研究装载机，以及：
http://evancharlton.com/thoughts/lazy-loading-images-in -a-的ListView

You may want to research lazy loaders as well: http://evancharlton.com/thoughts/lazy-loading-images-in-a-listview

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