Two vertical Linear Layouts and want one wider than the other - android-studio

Question

I have a layout that is a relativeLayout that contains 2 vertical Linear layouts. Each of the linear layouts is using equal width. The orientation is landscape and I would like to make the first Linear layout to use 2/3 of the layout and the second linearlayout use the other 1/3.
I am not well versed in XML. My background has been in Visual Basic and now moving to Java using Android Studio.
Here is the XML for the layout of activity.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3"
android:background="#color/colorBackgroundGray"
tools:layout="#layout/fragment_select_item"
tools:context="com.myCompany.myProduct.activities.ReturnAreaActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<FrameLayout
android:id="#+id/FragmentFrame"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
<include
android:id="#+id/include2"
layout="#layout/frm1"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="left"
android:layout_weight="1.7" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:paddingLeft="5dp"
android:orientation="vertical">
<include
android:id="#+id/include"
layout="#layout/layout_numpad5"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginStart="220dp"
android:layout_weight="1.3"
android:layout_gravity="right"
/>
</LinearLayout>
</RelativeLayout>
The weight is something I just tried. Any ideas?

Answer 1

Try Below basic logic it will work fine in your case
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="3">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="First Linear Layout"
android:gravity="center"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Second Linear Layout"
android:gravity="center"/>
</LinearLayout>
</LinearLayout>
Output :
To change orientation (If you wan't layouts side by side) just change value or android:orientation="vertical" to android:orientation="horizontal".
OUTPUT :