有没有办法从大规模的形象创造xxhdpi，xhdpi，华电国际，MDPI和LDPI可绘制？
有没有一种方法来自动大规模映像创建xxhdpi，xhdpi，华电国际，MDPI和LDPI可绘制？例如，假设我有一个512×512的图像，我希望有不同版本的图像通过Android的在相应的文件夹支持不同的屏幕分辨率。
Is there a way to create xxhdpi, xhdpi, hdpi, mdpi and ldpi drawables from a large scale image automatically? For example assume that I have a 512x512 image and I want to have different versions of this images for different screen resolutions supported by Android in appropriate folders.
选项＃1：只要船 -xxhdpi 可绘制，让Android的下采样他们为你在运行时（不足：只能在相当新的设备，其中 -xxhdpi 是已知的）
Option #1: Just ship the -xxhdpi drawables and let Android downsample them for you at runtime (downside: will only work on fairly recent devices, where -xxhdpi is known).
选项2：使用 Android的资产工作室下采样它们。
Option #2: Use Android Asset Studio to downsample them for you.
选项＃3：自动化中的图形编辑器的过程中，每ssantos答案
Option #3: Automate the process within a graphics editor, per ssantos' answer.
第4个选项：脚本自己的解决方案，使用类似的ImageMagick
Option #4: Script yourself a solution, using something like ImageMagick.