Develop Reference

Align Recycler View above linear layout

The list of things expected in the outout
1.a linear layout to the buttom of the activity as shown in the expected image
2.a recycler view above the linear layout to achieve the scrolling funtionality as shown in the expected image
The problem can be solved if I give the height to the recycler view.But in this case the layout won't be responsive to the samller sized screens
How can I achieve it?
xmlfile.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:numberpicker="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:orientation="vertical"
tools:context=".CartPage">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="70dp"
android:padding="20dp">
<ImageView
android:id="#+id/back_icon"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_centerVertical="true"
android:src="#drawable/ic_arrow_back_black_24dp" />
<TextView
android:id="#+id/product_buy"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginLeft="20dp"
android:layout_toRightOf="#+id/back_icon"
android:fontFamily="#font/carter_one"
android:text="My Cart"
android:textColor="#color/black"
android:textSize="20sp"
tools:ignore="RtlCompat" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/product_recycler"
android:layout_width="match_parent"
android:layout_height="400sp"
android:padding="0dp" />
// this is the buttom recycler
<LinearLayout
android:layout_alignParentBottom="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/buttom"
android:gravity="bottom|end"
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/border_gray"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:id="#+id/details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/border_gray"
android:fontFamily="sans-serif"
android:lineHeight="28dp"
android:padding="5dp"
android:text="Price Details"
android:textColor="#color/grey_400"
android:textSize="18sp"
tools:ignore="RtlCompat" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>

If you wish to tell your RecyclerView to fill the left over space of your LinearLayout you have to use the following layout_height and layout_weight on your RecyclerView:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/product_recycler"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:padding="0dp" />

How to make Android xml Linerlayout at the bottom of the activity in Android Studio?

How do I make LinearLayout in Android Studio at the bottom of the page. The result from the code below
I want the highlighted darken layout to be at the bottom of the page.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
tools:context=".MainPage"
android:orientation="vertical"
android:background="#ffffff">
<Button
android:id="#+id/taptoscan"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:layout_width="120dp"
android:layout_height="120dp"
android:background="#drawable/barcode"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tap to Scan"
android:fontFamily="#font/antic"
android:layout_gravity="center"
android:textSize="18sp"/>
<!--here is the layout i want to put at the bottom of the page-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#color/colorPrimaryDark"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:gravity="bottom">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RelativeLayout>
</LinearLayout>
In the above code I tried the below and did not worked.
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:gravity="bottom"

You can use RelativeLayout at the outside. Something like this, and then ADD new one LinearLayout after that.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:background="#ffffff"
android:orientation="vertical"
tools:context=".MainPage">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="#+id/taptoscan"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_gravity="center"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:background="#drawable/barcode" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/antic"
android:text="Tap to Scan"
android:textSize="18sp" />
</LinearLayout>
<!--here is the layout i want to put at the bottom of the page-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:background="#color/colorPrimaryDark"
android:gravity="bottom"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>

Use Frame Layout as base layout to do it in the best way, it's gonna work definitely
Just use layout_gravity="bottom" in the LinearLayout which you want at bottom and
Just like this :
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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:background="#ffffff"
android:orientation="vertical"
tools:context=".MainPage">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="#+id/taptoscan"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_gravity="center"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:background="#drawable/barcode" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/antic"
android:text="Tap to Scan"
android:textSize="18sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_gravity="bottom"
android:background="#color/colorPrimaryDark"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</FrameLayout>

The approach below would help you achieve your design specifications with zero overlappings. Basically, there are four key steps:
Change your root layout to a RelativeLayout.
Inside the RelativeLayout, add a LinearLayout that would contain your Button and your TextView.
Inside the same RelativeLayout, add the LinearLayout that you intend to pin to the bottom of the screen.
Make sure yoU set the first LinearLayout on top of the second by using the android:layout_above="" attribute.
Now, here's the code:
<?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"
tools:context=".MainPage">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ffffff"
android:layout_above="#+id/bottomView">
<Button
android:id="#+id/taptoscan"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:layout_width="120dp"
android:layout_height="120dp"
android:background="#drawable/barcode"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tap to Scan"
android:fontFamily="#font/antic"
android:layout_gravity="center"
android:textSize="18sp"/>
</LinearLayout>
<!--here is the layout i want to put at the bottom of the page-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="#+id/bottomView"
android:background="#color/colorPrimaryDark"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:gravity="bottom">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
I hope this helps.

How to center CardView inside LinearLayout?

I have a portrait display and I want to translate it to landscape mode.
In landscape mode, first child of encompassing LinearLayout, which is also a LinearLayout, should contain CardView with ImageView (rounded, I'm not sure how is that gonna turn out). In second LinearLayout, I would like to have Username and Password EditText next to each other horizontally. And finally, the last LinearLayout should contain Login and Sign Up buttons also horizontally.
I don't know how to center CardView inside first child LinearLayout and how to make ImageView rounded.
This what I have:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradient"
android:gravity="center"
tools:context=".LoginActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="horizontal"
android:layout_weight="1">
<androidx.cardview.widget.CardView
android:id="#+id/imageView"
android:layout_width="150dp"
android:layout_height="match_parent"
app:cardBackgroundColor="#090909"
app:cardCornerRadius="250dp">
<!--<androidx.cardview.widget.CardView
android:layout_width="150dp"
android:layout_height="145dp"
android:gravity="center"
app:cardCornerRadius="250dp">
</androidx.cardview.widget.CardView>-->
</androidx.cardview.widget.CardView>
<!--<ImageView
android:layout_width="150dp"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:scaleType="centerCrop"
android:src="#drawable/login_logo" />-->
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal">
<!--HERE WILL BE Username and Password-->
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal">
<!--HERE WILL BE Login and Sign up-->
</LinearLayout>
</LinearLayout>

android:gravity handles the alignment of its children,
android:layout_gravity handles the alignment of itself.
If you want to more rounded card view then fix heigh of cardView.
Give weight to other Linear layout "2", and Layout with card view weight "1" for small size.
Thanks You! Happy Coding
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#abcdef"
android:layout_gravity="center"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:orientation="horizontal">
<androidx.cardview.widget.CardView
android:id="#+id/imageView"
android:layout_width="150dp"
android:layout_height="match_parent"
app:cardBackgroundColor="#090909"
app:cardCornerRadius="150dp">
<!--<androidx.cardview.widget.CardView
android:layout_width="150dp"
android:layout_height="145dp"
android:gravity="center"
app:cardCornerRadius="250dp">
</androidx.cardview.widget.CardView>-->
</androidx.cardview.widget.CardView>
<!--<ImageView
android:layout_width="150dp"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:scaleType="centerCrop"
android:src="#drawable/login_logo" />-->
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:orientation="horizontal">
<!--HERE WILL BE Username and Password-->
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:orientation="horizontal">
<!--HERE WILL BE Login and Sign up-->
</LinearLayout>
</LinearLayout>
[This is your project(image) => https://i.stack.imgur.com/68ARf.png ]

your problem is simple. just change your orientation your linear layout like this:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" <!--change this-->
android:layout_weight="1">
<androidx.cardview.widget.CardView
android:id="#+id/imageView"
android:layout_width="150dp"
android:layout_gravity="center" <!-- and this-->
android:layout_height="match_parent"
app:cardBackgroundColor="#090909"
app:cardCornerRadius="250dp">
</androidx.cardview.widget.CardView>
<!--<ImageView
android:layout_width="150dp"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:scaleType="centerCrop"
android:src="#drawable/login_logo" />-->
</LinearLayout>
after this manipulation your cardview image will be in the center

Custom Card not showing as in design

I have been trying for some time now to fix layout.I have a custom cardview like this :this image
This custom card is inside a fragment this one:
<LinearLayout android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/grey"
xmlns:android="http://schemas.android.com/apk/res/android" >
<android.support.v7.widget.RecyclerView
android:layout_width="wrap_content"
android:id="#+id/recycle"
android:layout_height="match_parent"/>
</LinearLayout>
Which itself is inside a viewpager.The problem is when I run the app my custom card becomes full width,I have tried even with RelativeLayout still isn't as I have in my design layout.
Custom_Card Layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center|top"
xmlns:card_view="http://schemas.android.com/tools"
android:layout_marginTop="10dp"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="#+id/job_post"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
card_view:cardBackgroundColor="#fff"
card_view:cardCornerRadius="3dp"
card_view:cardElevation="4dp"
card_view:cardUseCompatPadding="true">
<RelativeLayout
android:layout_width="360dp"
android:layout_height="wrap_content"
android:background="#fff">...
Can sb help me?Thanks in advance

Use CardView as your Parent layout in item layout as follows -
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_margin="6dp"
app:cardElevation="#dimen/dimen4"
app:cardBackgroundColor="#fff"
android:id="#+id/job_post"
app:cardCornerRadius="3dp"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_margin="2dp"
android:layout_height="wrap_content"
android:background="#fff">
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="TextView" />
</RelativeLayout>
</android.support.v7.widget.CardView>
Give width of RecyclerView match_parent in your activity or fragment.
Thanks , I hope its work for you

You can use card view in linear layout and then set margin like below:-
<LinearLayout android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
android:background="#color/blue"
xmlns:android="http://schemas.android.com/apk/res/android" >
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_margin="20dp"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="Cardview Demo"/>
</android.support.v7.widget.CardView>
</LinearLayout>
I hope it will help you and you can set margin of cardview or your required width to cardview

RecyclerView does not expand its height when an item is added on adapter

I have a layout containing a RecyclerView and a layout for handling showing more items. When one or more items are received from hitting the "Show more" button the adapter is notified and the items are added on the RecyclerView. But the problem is, that the RecyclerView's height after an item has been added is not expanded.
This layout is part of a fragment contained in a ViewPager under a CollapsingToolbarLayout.
The structure of the fragment's layout:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#f5f5f5">
<com.github.rahatarmanahmed.cpv.CircularProgressView
android:id="#+id/progress_view"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="40dp"
app:cpv_animAutostart="true"
app:cpv_indeterminate="true"
app:cpv_thickness="4dp"/>
<LinearLayout
android:id="#+id/list_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/reviews_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:id="#+id/show_more_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#eee">
<TextView
android:id="#+id/show_more_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Show More"
android:textSize="15sp"
android:textColor="#color/colorPrimary"/>
<com.github.rahatarmanahmed.cpv.CircularProgressView
android:id="#+id/show_more_progress_view"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:visibility="invisible"
app:cpv_animAutostart="true"
app:cpv_indeterminate="true"
app:cpv_thickness="3dp"/>
</FrameLayout>
</LinearLayout>
</FrameLayout>
And the current state is something like this:
And the black part of image is the device's available height.

Check this modified layout.
Adding weight to recyclerview and the button wil make it fixed in particular position.Hope it works for you.
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#f5f5f5">
<com.github.rahatarmanahmed.cpv.CircularProgressView
android:id="#+id/progress_view"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="40dp"
app:cpv_animAutostart="true"
app:cpv_indeterminate="true"
app:cpv_thickness="4dp"/>
<LinearLayout
android:id="#+id/list_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/reviews_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"/>
<FrameLayout
android:id="#+id/show_more_container"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
android:background="#eee">
<TextView
android:id="#+id/show_more_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Show More"
android:textSize="15sp"
android:textColor="#color/colorPrimary"/>
<com.github.rahatarmanahmed.cpv.CircularProgressView
android:id="#+id/show_more_progress_view"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:visibility="invisible"
app:cpv_animAutostart="true"
app:cpv_indeterminate="true"
app:cpv_thickness="3dp"/>
</FrameLayout>
</LinearLayout>

Change your LinearLayout to a RelativeLayout, anchor FrameLayout to bottom parent and RecyclerView above your FrameLayout as follow:
<RelativeLayout android:id="#+id/list_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.widget.RecyclerView
android:id="#+id/reviews_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/show_more_container" />
<FrameLayout
android:id="#+id/show_more_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:background="#eee">
<TextView
android:id="#+id/show_more_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Show More"
android:textSize="15sp"
android:textColor="#color/colorPrimary"/>
<com.github.rahatarmanahmed.cpv.CircularProgressView
android:id="#+id/show_more_progress_view"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:visibility="invisible" />
</FrameLayout>
</RelativeLayout>
Change RecyclerView height to match_parent

change the layout_height of linearlayout to match_parrent.
change the layout_height of recyclerview to match_parrent.
change your recyclerviews item's height to wrap_content.
try this

Replace this
<LinearLayout
android:id="#+id/list_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
to
<LinearLayout
android:id="#+id/list_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
Also change the Recyclerview height to match_parent