如何使ImageButton的Andr​​oid中尺度自动根据屏幕像素密度？

问题描述

我已经把在一个图像的ImageButton ，这看起来很不错的一个MDPI（中DPI ）屏幕。然而，当该设备具有华电国际（高DPI ）屏幕，图像仍然逐像素精确的，这一下小的设备屏幕上。

I have an image put on an ImageButton, which looks good on a mdpi (medium-dpi) screen. However, when the device has a hdpi (high-dpi) screen, the image is still pixel-by-pixel accurate, which look small on the device screen.

我如何作出这样的图像（因此的ImageButton ）比例基础上，密度无关像素（ DP 或浸）而不是像素？

How do I make such that the image (and therefore the ImageButton) scaled based on the density-independent pixels (dp or dip) instead of pixels?

推荐答案

由于ponkin提到，9补丁是你最好的选择。结合资源目录预选赛（绘制 - 华电国际，绘制-MDPI 等），你可以使好看资产在任何密度和大小。

As ponkin mentioned, 9-patches are your best bet. Combined with resource directory qualifiers (drawable-hdpi, drawable-mdpi, etc.) you can make assets that look good at any density and size.

9，补丁和​​资源目录限定词的例子可以在多分辨率可以找到 Android SDK中的样品。半透明，黑色，圆角背景被实现为9贴片具有不同的PNG为LDPI，MDPI，和HDPI

An example of 9-patches and resource directory qualifiers can be found in the Multiple Resolutions Android SDK sample. The semi-transparent, black, rounded-corner background is implemented as a 9-patch with different PNGs for ldpi, mdpi, and hdpi.

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