Android实战技巧之十五:多分辨率适配常用目录

一个好的App必须要支持绝大多数市面上的设备,适配繁多的分辨率一度让我们陷入了分辨率的海洋。无论如何,这个工作是逃不掉的。

我们可以用多个layout目录对不同分辨率进行单独布局,如下:

layout-large-mdpi   (1024x600)
layout-large-tvdpi  (800x1280)
layout-large-xhdpi  (1200x1920)
layout-xlarge-mdpi  (1280x800)
layout-xlarge-xhdpi (2560x1600)

或者直接使用下面这样:

layout-640x360
layout-800x480

与layout对应的,有不同的drawable:

res/drawable        (default)
res/drawable-ldpi/  (240x320 and nearer resolution)
res/drawable-mdpi/  (320x480 and nearer resolution)
res/drawable-hdpi/  (480x800, 540x960 and nearer resolution)
res/drawable-xhdpi/  (720x1280 - Samsung S3, Micromax Canvas HD etc)
res/drawable-xxhdpi/ (1080x1920 - Samsung S4, HTC one, Nexus 5, etc)

用不同的layout毕竟工作量巨大,我们的实践是用不同的values来对应同layout中的值,目录如下:

res/values/dimens.xml(default)
res/values-ldpi/dimens.xml   (240x320 and nearer resolution)
res/values-mdpi/dimens.xml   (320x480 and nearer resolution)
res/values-hdpi/dimens.xml   (480x800, 540x960 and nearer resolution)
res/values-xhdpi/dimens.xml  (720x1280 - Samsung S3, Micromax Canvas HD, etc) 
res/values-xxhdpi/dimens.xml (1080x1920 - Samsung S4, HTC one, etc)
res/values-large/dimens.xml      (480x800)

res/values-large-mdpi/dimens.xml (600x1024)
res/values-sw600dp/dimens.xml      (600x1024)
res/values-sw720dp/dimens.xml      (800x1280)
res/values-xlarge-xhdpi/dimens.xml (2560x1600 - Nexus 10") res/values-large-xhdpi/dimens.xml (1200x1920 - Nexus 7"(latest))

有时必须要考虑到密度,如下:

ldpi    120dpi  0.75
mdpi    160dpi  1
hdpi    240dpi  1.5
xhdpi   320dpi  2

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