Develop Reference

How can I place the text on the image in variable devices?

Hi, I make application with this Image.
I want place the text on red dot points at lines left side and right side.
So I place the text on point, but when I change the device Galaxy S6 to S8,
text placement depart from lines.
I seperate the lines and put weight on it, but still out.
How I can place the text on that image in variable device?
Please help me.
This is my layout.xml
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerInside"
android:src="#drawable/nursecategory"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<!--first line-->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="32dp"
>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Date"
android:textColor="#color/colorCategory"
android:textStyle="bold"
android:layout_alignParentRight="true"
/>
<TextView
android:id="#+id/nursetree_textview_Date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="6dp"
android:textAlignment="center"/>
</LinearLayout>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
/>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Age"
android:textColor="#color/colorCategory"
android:textStyle="bold" />
<TextView
android:id="#+id/nursetree_textview_Age"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="6dp"
android:textAlignment="center"
/>
</LinearLayout>
</LinearLayout>
<!--second line-->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="24dp"
>
<!--Name-->
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textColor="#color/colorCategory"
android:textStyle="bold" />
<TextView
android:id="#+id/nursetree_textview_Agency"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="6dp"
android:textAlignment="center"
/>
</LinearLayout>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
/>
<!--width-->
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Width"
android:textColor="#color/colorCategory"
android:textStyle="bold" />
<TextView
android:id="#+id/nursetree_textview_Width"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="6dp"
android:textAlignment="center"
/>
</LinearLayout>
</LinearLayout>
<!--third line-->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="26dp"
>
<!--place-->
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Place"
android:textColor="#color/colorCategory"
android:textStyle="bold" />
<TextView
android:id="#+id/nursetree_textview_Place"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="6dp"
android:textAlignment="center"
/>
</LinearLayout>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
/>
<!--heigth-->
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Height"
android:textColor="#color/colorCategory"
android:textStyle="bold" />
<TextView
android:id="#+id/nursetree_textview_Height"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="6dp"
android:textAlignment="center"
/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</FrameLayout>
</LinearLayout>
</LinearLayout>

use Relativelayout as parent layout then try to design your view.
in Relaytivelayout we can add layouts as tray. and it easily to handle.
also read about Relativlayout.

not able to re center layout and keep it left justified the views present in it

So, I have a layout,and there are a couple of textviews in it,i'm trying to put all the views in the center and content of the views should be left justified,i'm not sure how to do that?
any inputs would be helpful,here's my xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
android:gravity="center"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="PTD Payments"
android:background="#android:color/transparent"
/>
<TextView
android:id="#+id/childOption1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:layout_marginLeft="50dp"
android:background="#android:color/transparent"
android:text="Option 1" />
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#D3D3D3"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="#+id/childOption12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="Annual TIA"
android:background="#android:color/transparent"
/>
<TextView
android:id="#+id/childOption2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:layout_marginLeft="50dp"
android:background="#android:color/transparent"
android:text="Option 2" />
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#D3D3D3"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="#+id/childOption13"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="Total Liability"
android:textColor="#ff0000"
android:background="#android:color/transparent"
/>
<TextView
android:id="#+id/childOption3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:layout_marginLeft="50dp"
android:background="#android:color/transparent"
android:textColor="#ff0000"
android:text="Option 3" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
It seems that relative layout works out, but I need to have some level of margin, i'm attaching an image on how it should look
I cannot share some part of the code due to privacy reasons

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
android:gravity="center"
android:weightSum="2"
>
<TextView
android:weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
<TextView
android:weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
</LinearLayout>

try below code
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center"
android:gravity="center"
android:weightSum="2">
<TextView
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
<TextView
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
</LinearLayout>

fixed width LinearLayout

I'm trying to get two linear layout side by side and put content inside of it.
I want the two linear layouts to be side by side, but the left one should take about 3/4 of the screen and the right one the rest of it.
This is my code: https://gitlab.com/snippets/1682040
But the two linear layouts always change the width and the height depending on the content.
How can I have two linear layouts side by side with fixed width and height?
A better solution with RelativeLayout is always welcome.
This is the result:

Use layout_weight property of LinearLayout and android:weightSum property for parent layout.
Do Something like this
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="15dp"
android:weightSum="1">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".75" // For First layout to 3/4
android:background="#color/colorPrimary"
android:gravity="left|center"
android:orientation="vertical">
//First Layout content Here
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".25" // For Second layout to rest of screen
android:background="#color/colorAccent"
android:gravity="center"
android:orientation="vertical">
//Second Layout Content Here
</LinearLayout>
</LinearLayout>

I know that you asked for a solution with the LinearLayout but I suggest you to solve this problem with the ConstraintLayout. You will get incredible performance improvements without nested view.
In this sample I added a vertical guideline at 75% of from the left of the screen. I have only to remove the nested LinearLayouts and add the constraints to your views!
Try it out!
<android.support.constraint.ConstraintLayout 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:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="0dp"
android:layout_height="628dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:background="#color/colorPrimary"
android:gravity="left|center"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/guideline4"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/repository_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/blue"
android:textSize="20dp" />
<TextView
android:id="#+id/repository_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="2"
android:text="AAAAA"
android:textColor="#color/gray"
android:textSize="15dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_menu_camera" />
<TextView
android:id="#+id/repository_fork_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/orange"
android:textSize="20dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:src="#drawable/ic_menu_camera" />
<TextView
android:id="#+id/repository_star_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/orange"
android:textSize="20dp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="0dp"
android:layout_height="628dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:background="#color/colorAccent"
android:gravity="center"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline4"
app:layout_constraintTop_toTopOf="parent">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/user_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/blue" />
<TextView
android:id="#+id/first_last_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mock Name"
android:textColor="#color/lightGray" />
</LinearLayout>
<android.support.constraint.Guideline
android:id="#+id/guideline4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.75" />

Try this give Your first LinearLayout android:layout_weight=".75" so it can take 3/4 space in screen
than assign android:layout_weight="0.25" to Your second LinearLayout so it can take remaining space
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="15dp"
android:weightSum="1">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.75"
android:background="#color/colorPrimary"
android:orientation="vertical">
<TextView
android:id="#+id/repository_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/colorBlue"
android:textSize="20dp" />
<TextView
android:id="#+id/repository_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="2"
android:text="AAAAA"
android:textColor="#color/colorGreen"
android:textSize="15dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_menu_camera" />
<TextView
android:id="#+id/repository_fork_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/colorPrimary"
android:textSize="20dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:src="#drawable/ic_menu_camera" />
<TextView
android:id="#+id/repository_star_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/colorPrimary"
android:textSize="20dp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:background="#color/colorAccent"
android:gravity="center"
android:orientation="vertical">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/user_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/colorBlue" />
<TextView
android:id="#+id/first_last_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mock Name"
android:textColor="#color/colorRed" />
</LinearLayout>
</LinearLayout>

Seems like both of the weights are set to "1". Have you tried ".5"?
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/colorPrimary"
android:layout_weight="0.50"
android:gravity="left|center">

Try this I have added weight
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="15dp"
android:weightSum="1">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".75"
android:background="#color/colorPrimary"
android:gravity="left|center"
android:orientation="vertical">
<TextView
android:id="#+id/repository_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/blue"
android:textSize="20dp" />
<TextView
android:id="#+id/repository_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="2"
android:text="AAAAA"
android:textColor="#color/gray"
android:textSize="15dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_menu_camera" />
<TextView
android:id="#+id/repository_fork_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/orange"
android:textSize="20dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:src="#drawable/ic_menu_camera" />
<TextView
android:id="#+id/repository_star_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/orange"
android:textSize="20dp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".25"
android:background="#color/colorAccent"
android:gravity="center"
android:orientation="vertical">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/user_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/blue" />
<TextView
android:id="#+id/first_last_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mock Name"
android:textColor="#color/lightGray" />
</LinearLayout>
</LinearLayout>

First remove weightSum attribute from parent layout.
If you want your first layout to be 3/4 of you should put weight 0.75 and 0.25 (1/4) for the other one like here:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="15dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/colorPrimary"
android:layout_weight=".75"
android:layout_gravity="left"
android:gravity="left|center">
<TextView
android:id="#+id/repository_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/blue"
android:textSize="20dp"/>
<TextView
android:id="#+id/repository_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="2"
android:ellipsize="end"
android:text="AAAAA"
android:textColor="#color/gray"
android:textSize="15dp"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_menu_camera"/>
<TextView
android:id="#+id/repository_fork_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/orange"
android:textSize="20dp"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_menu_camera"
android:layout_marginLeft="15dp"/>
<TextView
android:id="#+id/repository_star_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123"
android:textColor="#color/orange"
android:textSize="20dp"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/colorAccent"
android:layout_weight=".25"
android:gravity="center">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/user_image"
android:layout_width="40dp"
android:layout_height="40dp" />
<TextView
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="AAAAA"
android:textColor="#color/blue"/>
<TextView
android:id="#+id/first_last_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mock Name"
android:textColor="#color/lightGray"/>
</LinearLayout>

try this:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".75"
android:orientation="vertical"
android:visibility="visible">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#000"
android:textSize="16dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/shape_txt"
android:gravity="center"
/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".25"
android:orientation="vertical"
android:visibility="visible">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#000"
android:textSize="16dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/shape_txt"
android:gravity="center"
/>
</LinearLayout>
</LinearLayout>

Change the weight sum to 4 in the parent layout and add weight as 3 for child linear layout so it can take 3/4 space and 1 to child linear layout so that it will take the remaining space.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="15dp"
android:weightSum="4">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3"
android:background="#color/colorPrimary"
android:gravity="left|center"
android:orientation="vertical">
//Your contents
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#color/colorAccent"
android:gravity="center"
android:orientation="vertical">
//Your contents
</LinearLayout>
</LinearLayout>

layout_weight is not working at all [duplicate]

This question already has answers here:
Layout Weights do not work inside a ScrollView
(5 answers)
Closed 6 years ago.
The problem is that I want two linearlayouts inside a linearlayout.And I want those 2 linearlayouts to be aligned vertically according to android:layout_weight property.But it seems that layout_weight is not having any effect. Here is my layout
<ScrollView>
.....
<LinearLayout>
...
<LinearLayout> //1.Here the Linear Layout is not getting aligned properly according to the layout_weight
...
android:layout_height="0dp"
android:layout_weight="3"
.
.
.
.
</LinearLayout>
<LinearLayout> //2.These two Linear layouts are to be aligned vertically and this second layout is required to use very less space as compared to first layout
. . .
android:layout_height="0dp"
android:layout_weight="1"
.
.
.
</LinearLayout>
</LinearLayout>
</ScrollView>
Here is the full XML code for reference:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:layout_margin="16dp"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_weight="3" >
<EditText
android:id="#+id/edittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginTop="30dp"
android:ems="5"
android:hint="Name"
android:inputType="text" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="Toppings"
android:textAllCaps="true" />
<CheckBox
android:id="#+id/whippedcream_checkbox_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:paddingLeft="24dp"
android:text="Whipped Cream"
android:textSize="16sp" />
<CheckBox
android:id="#+id/chocolate_checkbox_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:paddingLeft="24dp"
android:text="Chocolate"
android:textSize="16sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="Quantity"
android:textAllCaps="true" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="decrement"
android:text="-" />
<TextView
android:id="#+id/quantity_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:text="2"
android:textColor="#android:color/black"
android:textSize="16sp" />
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="increment"
android:text="+" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="order summary"
android:textAllCaps="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:onClick="submitOrder"
android:text="Order" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="PRICE:" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Coffee: Rs.5 per cup" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Whipped Cream: Rs.1 per cup additional" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Chocolate: Rs.2 per cup additional" />
</LinearLayout>
</LinearLayout>
</ScrollView>

add android:fillViewport="true" in scrollview
add android:weightSum="4" main linearlayout
Here is the full code below,
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
tools:context=".DemoActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:orientation="vertical"
android:weightSum="4">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:orientation="vertical">
<EditText
android:id="#+id/edittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginTop="30dp"
android:ems="5"
android:hint="Name"
android:inputType="text" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="Toppings"
android:textAllCaps="true" />
<CheckBox
android:id="#+id/whippedcream_checkbox_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:paddingLeft="24dp"
android:text="Whipped Cream"
android:textSize="16sp" />
<CheckBox
android:id="#+id/chocolate_checkbox_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:paddingLeft="24dp"
android:text="Chocolate"
android:textSize="16sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="Quantity"
android:textAllCaps="true" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="decrement"
android:text="-" />
<TextView
android:id="#+id/quantity_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:text="2"
android:textColor="#android:color/black"
android:textSize="16sp" />
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="increment"
android:text="+" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="order summary"
android:textAllCaps="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:onClick="submitOrder"
android:text="Order" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="PRICE:" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Coffee: Rs.5 per cup" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Whipped Cream: Rs.1 per cup additional" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Chocolate: Rs.2 per cup additional" />
</LinearLayout>
</LinearLayout>

All content inside both the linear layouts has their layout_height set as wrap_content.
The important thing here is that, weights work only after all views having not weighted layout_height/layout_width have occupied space on the screen.
Example:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="abcd1" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="abcd2" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="abcd3" />
</LinearLayout>
Here abcd2 and abcd3 TextViews would be alloted space first and then abcd1 would occupy the rest of the space on the screen.

How do layout_weight makes widgets disappear?

I have LinearLayouts nested in a "Master Layout" with their width set to fill_parent and height to 0dp.
The Master has a weight sum of 100 and a vertical orientation, and I have the nested layouts with their respective weights. The goal is to split the vertical space, but they all disappear. What am I doing wrong?
Here is the XML, I have only applied the weight/layouts to the top few.
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout02"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="100">
<LinearLayout
android:id="#+id/LinearLayout03"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="20" >
<ImageView
android:id="#+id/terranlogo1"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/terranlogo" />
<ImageView
android:id="#+id/protosslogo1"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="0dp"
android:src="#drawable/protosslogo" />
<ImageView
android:id="#+id/zerglogo1"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/zerglogo" />
</LinearLayout>
<LinearLayout
android:id="#+id/LinearLayout04"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="5" >
<CheckBox
android:id="#+id/ck_t1"
android:layout_width="0dp"
android:layout_height="0dp" />
<CheckBox
android:id="#+id/ck_p1"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginLeft="25dp" />
<CheckBox
android:id="#+id/ck_z1"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginLeft="25dp" />
</LinearLayout>
<LinearLayout
android:id="#+id/LinearLayout05"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="5" >
<ImageView
android:id="#+id/terranlogo2"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/terranlogo" />
<ImageView
android:id="#+id/protosslogo2"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/protosslogo" />
<ImageView
android:id="#+id/zerglogo2"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/zerglogo" />
</LinearLayout>
<CheckBox
android:id="#+id/ck_t2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<CheckBox
android:id="#+id/ck_p2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="25dp" />
<CheckBox
android:id="#+id/ck_z2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="25dp" />
<TextView
android:id="#+id/textView4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginRight="18dp"
android:layout_marginTop="17dp"
android:gravity="center_vertical|center_horizontal"
android:text="Choose your opponets race(s) and your race(s)"
android:textSize="30dp" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Game Length"
android:textSize="15dp" />
<Spinner
android:id="#+id/s_answertime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="Mistakes Allowed"
android:textSize="15dp" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Answer Time"
android:textSize="15dp" />
<Spinner
android:id="#+id/s_mistakenumber"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Spinner
android:id="#+id/s_gametime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>

This is the way how to split available space evenly
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:orientation="horizontal" >
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Text1"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_weight="1.0">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Text2"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:orientation="horizontal" >
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Text3"/>
</LinearLayout>
</LinearLayout>