I made a sample of the new percent support library.
It will be documented soon on android dev website so it's just a proof of concept :)
You can check official docs reference here
This library provide percentage based layouts, horizontal and vertical at the same time.

from https://gist.github.com/shekarshine/5458f697c02e5619b0e2
just add percent support library to your project
dependencies{compile 'com.android.support:percent:22.2.0' }###Supported Layouts :
####PercentRelativeLayout
<android.support.percent.PercentRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="match_parent"> <Viewandroid:id="@+id/top_left"android:layout_width="0dp"android:layout_height="0dp"android:layout_alignParentTop="true"android:background="#ff44aacc"app:layout_heightPercent="20%"app:layout_widthPercent="70%" /> <Viewandroid:id="@+id/top_right"android:layout_width="0dp"android:layout_height="0dp"android:layout_alignParentTop="true"android:layout_toRightOf="@+id/top_left"android:background="#ffe40000"app:layout_heightPercent="20%"app:layout_widthPercent="30%" /> <Viewandroid:id="@+id/bottom"android:layout_width="match_parent"android:layout_height="0dp"android:layout_below="@+id/top_left"android:background="#ff00ff22"app:layout_heightPercent="80%" /> </android.support.percent.PercentRelativeLayout>####PercentFrameLayout
<android.support.percent.PercentFrameLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="match_parent"> <!-- ... XML CODE --> </android.support.percent.PercentFrameLayout>###Stylable :
- heightPercent
- widthPercent
- marginBottomPercent
- marginEndPercent
- marginLeftPercent
- marginPercent
- marginRightPercent
- marginStartPercent
- marginTopPercent
- Android SDK v22
- Android Build Tools v22.0.1
- Android Percent Support Repository v22.2.0
- Android Support v4 Repository v22.2.0
according to the the manifest minsdk is v7 (android 2.1)
####License Mit
