Android 最终官方支持按百分比来设置控件的宽高了。

我们先来看看效果：

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">

    <View

        android: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%" />

    <View

        android: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%" />

    <View

        android: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

支持：

• Android SDK v22
• Android Build Tools v22.0.1
• Android Percent Support Repository v22.2.0
• Android Support v4 Repository v22.2.0