Develop Reference

How to align Floating Action Button to end|bottom

I have one FloatingActionButton. I want it to be end|bottom like
What I want
this.
Currently, My design is like this
What I have
I want it to be at the exact end|bottom of the screen. How to do that?
Which layout is best to use?
This is my whole xml code
<?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"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:padding="30dp">
<ImageView
android:id="#+id/post_request_back_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/general_back_icon" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:fontFamily="#font/muli_black"
android:text="#string/_post_request_header_name"
android:textAllCaps="true"
android:textColor="#color/colorAccent"
android:textSize="30sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="#string/how_requests_work"
android:textColor="#color/colorAccent"
android:textSize="10sp" />
<ListView
android:id="#+id/postlist"
android:layout_width="match_parent"
android:layout_height="420dp"
android:layout_marginStart="0dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="0dp"
app:layout_constraintBottom_toTopOf="#+id/postadd"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/postadd"
android:layout_marginTop="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="16dp"
android:src="#drawable/postrequest_add_btn" />
</LinearLayout>

You can wrap your FAB button into a RelativeLayout and keep other views in your LinearLayout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="30dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/post_request_back_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/general_back_icon" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:fontFamily="#font/muli_black"
android:text="#string/_post_request_header_name"
android:textAllCaps="true"
android:textColor="#color/colorAccent"
android:textSize="30sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="#string/how_requests_work"
android:textColor="#color/colorAccent"
android:textSize="10sp" />
<ListView
android:id="#+id/postlist"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" />
</LinearLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/postadd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_margin="16dp"
android:layout_marginTop="20dp"
android:src="#drawable/postrequest_add_btn" />
</RelativeLayout>
Note: I removed the Constraints you added to the ListView as they are related to ConstraintLayout, also made its height as wrap_content
And here is with the ConstraintLayout
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
android:padding="30dp">
<ImageView
android:id="#+id/post_request_back_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/general_back_icon"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/tv_post_request_header_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:fontFamily="#font/muli_black"
android:text="#string/_post_request_header_name"
android:textAllCaps="true"
android:textColor="#color/colorAccent"
android:textSize="30sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/post_request_back_button" />
<TextView
android:id="#+id/id_how_requests_work"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="#string/how_requests_work"
android:textColor="#color/colorAccent"
android:textSize="10sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tv_post_request_header_name" />
<ListView
android:id="#+id/postlist"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/id_how_requests_work" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/postadd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_margin="16dp"
android:layout_marginTop="20dp"
android:src="#drawable/postrequest_add_btn" />
</androidx.constraintlayout.widget.ConstraintLayout>

CardView not fully Scrollable on my fragment

I am using a fragment to display cardview and a common Bottomnavigation for all fragments. Here I have more than 5 cards as per my data but I am not able to scroll to see all cards. only scrollable up to the second card and the second one is also not fully visible due to the bottom navigation.
main_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff293353"
android:paddingTop="20dp">
<fragment
android:id="#+id/nav_host_fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
android:layout_above="#id/nav_view"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="#navigation/mobile_navigation" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/nav_view"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="0dp"
android:layout_marginEnd="0dp"
android:background="#drawable/bottom_tab_style"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:menu="#menu/bottom_nav_menu" />
</androidx.constraintlayout.widget.ConstraintLayout>
Then Recycleview
<?xml version="1.0" encoding="utf-8"?>
<ScrollView android:layout_height="wrap_content"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginTop="5dp"
android:orientation="horizontal"
android:layout_marginBottom="10dp"
android:weightSum="1"
android:layout_marginStart="70dp"
android:layout_marginEnd="70dp"
android:layout_gravity="center"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center"
android:background="#drawable/left_enabled"
android:layout_weight="0.5"
android:textAlignment="center"
android:id="#+id/btn_normal"
android:text="#string/normal"
android:textColor="#color/white"
android:textStyle="bold" />
<TextView
android:id="#+id/btn_cognitive"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:background="#drawable/right_disabled"
android:gravity="center"
android:text="#string/cognitive"
android:textAlignment="center"
android:textColor="#color/white"
android:textStyle="bold" />
</LinearLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_marginTop="5dp"
android:layout_height="wrap_content">
</androidx.recyclerview.widget.RecyclerView>
</LinearLayout>
</ScrollView>
Then cardview content
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">
<LinearLayout
android:layout_width="match_parent"
android:background="#drawable/cardstyle"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
>
<com.google.android.material.card.MaterialCardView
android:id="#+id/cardView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/transparent"
card_view:cardBackgroundColor="#color/transparent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
card_view:cardCornerRadius="12dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginEnd="2dp"
android:layout_marginStart="2dp"
android:layout_marginTop="2dp"
android:layout_marginBottom="2dp"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#3f4865"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="35dp"
>
<TextView
android:id="#+id/txt_recordTitle"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fontFamily="#font/poppins"
android:paddingStart="12dp"
android:text="Normal Test 01"
android:gravity="center_vertical"
android:textColor="#color/white"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:orientation="horizontal">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_gravity="center_vertical"
android:layout_marginEnd="10dp"
android:src="#drawable/ic_card_walk" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/parameter1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/poppins"
android:letterSpacing="0.12"
android:text="No: of gait cycles"
android:textColor="#cecece"
android:textSize="12sp" />
<TextView
android:id="#+id/p1_value"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/poppins"
android:letterSpacing="0.16"
android:text="Details"
android:textColor="#FFF"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:orientation="horizontal">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginEnd="10dp"
android:src="#drawable/ic_card_walk" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/parameter2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/poppins"
android:letterSpacing="0.12"
android:text="Stride Length"
android:textColor="#cecece"
android:textSize="12sp" />
<TextView
android:id="#+id/p2_value"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/poppins"
android:letterSpacing="0.16"
android:text="Details"
android:textColor="#FFF"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginEnd="10dp"
android:src="#drawable/ic_card_walk" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/parameter3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/poppins"
android:letterSpacing="0.12"
android:text=" Gait time"
android:textColor="#cecece"
android:textSize="12sp" />
<TextView
android:id="#+id/p3_value"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="#font/poppins"
android:letterSpacing="0.16"
android:text="p2"
android:textColor="#FFF"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:background="#drawable/info_button_style"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/total_n_gait_score"
android:textAlignment="center"
android:textColor="#FFF" />
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<ProgressBar
android:id="#+id/card_progressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_centerInParent="true"
android:layout_marginTop="10dp"
android:background="#drawable/circle_shape"
android:indeterminate="false"
android:max="100"
android:progress="65"
android:progressDrawable="#drawable/card_progress" />
<TextView
android:id="#+id/text_progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="60%"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:textColor="#color/white" />
</FrameLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:orientation="horizontal"
android:paddingBottom="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ellipsize="end"
android:maxLines="1"
android:id="#+id/card_date"
android:text="date"
android:textColor="#FFF"
android:textSize="1sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:ellipsize="end"
android:maxLines="1"
android:text="time"
android:id="#+id/card_time"
android:textColor="#FFF"
android:textSize="12sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
Please check my code and help me with this.

This is wrong in your main_activity.xml for fragment android:layout_above="#id/nav_view", it is used for RelativeLayout. Instead use app:layout_constraintBottom_toTopOf="#id/nav_view". This will solve your second issue(the second one is also not fully visible due to the bottom navigation).
Change your ScrollView to NestedScrollView.
In your cardview content you don't need ConstraintLayout, LinearLayout is sufficient as root element (remove ConstraintLayout as you are not utilising its power of flat view hierarchy). And if your LinearLayout background can be moved to background for MaterialCardView then you don't need LinearLayout too.
For your recyclerview set the nestedScrollingEnabled to false either through xml or by code. Try these things, it will solve your problem.

How do I prevent the keyboard from making my recyclerview items smaller?

So the problem is this. At first it looks good:
But when I open my keyboard the first two items in the way of the keyboard shrink a little bit
This is the XML code of the layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
card_view:cardBackgroundColor="#EFE8E8"
card_view:cardCornerRadius="8dp"
card_view:cardElevation="10dp"
card_view:cardUseCompatPadding="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:orientation="horizontal">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:text="TextView"
android:textSize="20sp"
android:textStyle="bold"></TextView>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="TextView" />
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="Difficulty" />
</LinearLayout>
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
And this is the XML code of my activity where the recyclerview is displayed:
<?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"
android:orientation="vertical"
tools:context=".subActivities.CreateWorkoutActivity">
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="48dp"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.075"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="36dp"
android:ems="10"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/textView10"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="68dp"
android:text="TextView"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/editText" />
<ScrollView
android:id="#+id/scrollView3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:maxHeight="220dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/exerciseRecyclerView"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp" />
</LinearLayout>
</ScrollView>
<Button
android:id="#+id/button"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:background="#color/colorAccent"
android:text="Add"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.938"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/floatingActionButton"
app:layout_constraintVertical_bias="0.737" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/floatingActionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:clickable="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/scrollView3"
app:srcCompat="#drawable/add" />
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
Is there a way to prevent this?
Thanks for your help

Try this in your activity tag in manifest, add this line:
android:name=".SettingsActivity"
Like:
<activity
android:windowSoftInputMode="adjustPan"
android:name=".MyActivity"/>

fill rest of the space using linearlayout

I have a FoodCardFragment that has a CardView at the bottom. I want the CardView to have a height of at least 120dp and fill the rest of the space (so I set its layout_weight to 1).
The FoodCardFragment is put in the RandomFragment (the first tab of MainAcitivity), and also has its layout_weight set to 1 as I want it to fill the rest of the space.
However, as you can tell from the image I posted below, the yellow CardView I mentioned above doesn't fill the rest of the space. How can I achieve my goal?
In case the links won't work:
Code for FoodCardFragment:
<LinearLayout 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"
android:orientation="vertical"
android:padding="20dp"
android:background="#android:color/white">
<android.support.v7.widget.CardView
android:id="#+id/food_card"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:elevation="2dp">
<android.support.constraint.ConstraintLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/food_image"
android:layout_width="320dp"
android:layout_height="320dp"
android:scaleType="centerCrop"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/food_image_place_holder" />
<ImageView
android:id="#+id/liked_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="4dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_undo_like" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="10dp">
<TextView
android:id="#+id/food_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textSize="24sp"
android:textStyle="bold"
android:layout_weight="1"
android:maxLines="1"
android:ellipsize="end"
android:layout_marginEnd="4dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/food_card" />
<ImageButton
android:id="#+id/more_button"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#android:color/transparent"
android:src="#drawable/ic_dropdown" />
</LinearLayout>
<FrameLayout
android:id="#+id/tags_frame"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginVertical="10dp" />
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:minHeight="120dp">
<TextView
android:id="#+id/food_note_back"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/food_note_background"
android:scrollbars="vertical"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:paddingHorizontal="8dp" />
<TextView
android:id="#+id/food_note_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/food_note_background"
android:scrollbars="vertical"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:paddingHorizontal="8dp" />
</android.support.v7.widget.CardView>
</LinearLayout>
Code for RandomFragment:
<LinearLayout
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"
android:orientation="vertical"
android:background="#color/whiteSmoke">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?android:attr/colorBackgroundFloating"
android:elevation="2dp">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/title_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/random"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/filter_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="15dp"
android:background="#android:color/transparent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/menu_button"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_filter" />
<ImageButton
android:id="#+id/menu_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="10dp"
android:background="#android:color/transparent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_menu" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.Toolbar>
<android.support.v7.widget.CardView
android:id="#+id/food_card_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:layout_marginHorizontal="20dp"
android:layout_marginTop="30dp"
android:background="#android:color/white"
app:cardCornerRadius="4dp"
app:cardElevation="4dp">
<FrameLayout
android:id="#+id/food_card_frame"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</android.support.v7.widget.CardView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:padding="10dp">
<ImageButton
android:id="#+id/check_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#android:color/transparent"
android:padding="8dp"
app:srcCompat="#drawable/ic_check" />
<ImageButton
android:id="#+id/cross_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#android:color/transparent"
android:padding="8dp"
app:srcCompat="#drawable/ic_cross" />
<ImageButton
android:id="#+id/refresh_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#android:color/transparent"
android:padding="8dp"
app:srcCompat="#drawable/ic_refresh" />
</LinearLayout>
</LinearLayout>

How to Align LinearLayout to Bottom of Activity

I have the following activity_main.xml file, and I want to align the three buttons inside the LinearLayout to the bottom of the page. I've tried layout_alignParentBotton="true"
but that doesn't work.. is there any setting that would let me bring the linearLayout to the bottom of the activity?
thanks
<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/blueBackground"
tools:context="org.pctechtips.george.dailyquotes.MainActivity">
<TextView
android:id="#+id/main_title"
android:layout_width="368dp"
android:layout_height="wrap_content"
android:text="Daily Quotes"
android:textSize="30dp"
android:textColor="#color/whiteText"
android:textAlignment="center"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="16dp" />
<ImageView
android:id="#+id/main_image"
android:layout_width="100dp"
android:layout_height="100dp"
app:srcCompat="#mipmap/ic_launcher_round"
android:layout_centerHorizontal="true"
tools:layout_editor_absoluteY="89dp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintLeft_toLeftOf="parent" />
<TextView
android:id="#+id/quote_text"
android:layout_width="368dp"
android:layout_height="wrap_content"
android:text="This is a random text"
android:textColor="#color/whiteText"
android:textSize="20dp"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="246dp" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentBottom="true">
<ImageView
android:id="#+id/previous_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_previous"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="473dp" />
<ImageView
android:id="#+id/share_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="473dp" />
<ImageView
android:id="#+id/next_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_next"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="473dp" />
</LinearLayout>
</android.support.constraint.ConstraintLayout>

Change android:layout_alignParentBottom="true" to app:layout_constraintBottom_toBottomOf="parent". Here is an example that also stretches that layout to the width of the parent and centers the views within it
...
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent">
...

Add following Constraints to Your Linear layout .
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
Some of your views are not constraints properly. If you want to use RelativeLayout then try the solution below .
<?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:background="#color/blueBackground"
tools:context="org.pctechtips.george.dailyquotes.MainActivity">
<TextView
android:id="#+id/main_title"
android:layout_width="368dp"
android:layout_height="wrap_content"
android:text="Daily Quotes"
android:textSize="30dp"
android:textAlignment="center"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="16dp" />
<ImageView
android:id="#+id/main_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_below="#+id/main_title"
app:srcCompat="#mipmap/ic_launcher_round"
android:layout_centerHorizontal="true"
/>
<TextView
android:id="#+id/quote_text"
android:layout_width="match_parent"
android:layout_below="#+id/main_image"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_centerHorizontal="true"
android:text="This is a random text"
android:textSize="20dp"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true">
<ImageView
android:id="#+id/previous_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_previous"
/>
<ImageView
android:id="#+id/share_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<ImageView
android:id="#+id/next_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_next"
/>
</LinearLayout>
</RelativeLayout>

Replace the parent constraint layout with a RelativeLayout

Try editing your layout this way:
<?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"
android:orientation="vertical" android:background="#color/blueBackground" tools:context="org.pctechtips.george.dailyquotes.MainActivity">
<LinearLayout android: layout_weight="1" android orientation="vertical" android:layout_width="match_parent" android:layout_height="0dp">
<TextView android:id="#+id/main_title" android:layout_width="368dp" android:layout_height="wrap_content" android:text="Daily Quotes" android:textSize="30dp" android:textColor="#color/whiteText" android:textAlignment="center" /> <ImageView android:id="#+id/main_image" android:layout_width="100dp" android:layout_height="100dp" app:srcCompat="#mipmap/ic_launcher_round" /> <TextView android:id="#+id/quote_text" android:layout_width="368dp" android:layout_height="wrap_content" android:text="This is a random text" android:textColor="#color/whiteText" android:textSize="20dp"/>
</LinearLayout>
<LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_alignParentBottom="true"> <ImageView android:id="#+id/previous_quote" android:layout_width="wrap_content" android:layout_height="wrap_content" app:srcCompat="#android:drawable/ic_media_previous"/> <ImageView android:id="#+id/share_quote" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <ImageView android:id="#+id/next_quote" android:layout_width="wrap_content" android:layout_height="wrap_content" app:srcCompat="#android:drawable/ic_media_next"/> </LinearLayout> </LinearLayout>
Note the layout weight in the Linear Layout.

Your root layout is a ConstraintLayout so you should position its children using the appropriate constraints listed in the documentation. In order to position the LinearLayout at the bottom center and wrap its content you should use the following:
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constrainedWidth="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
You can also optimize your layout by removing the LinearLayout altogether and constraining the three ImageViews in a horizontal chain as direct children of the root ConstraintLayout like this:
<ImageView
android:id="#+id/previous_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_previous"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/share_quote"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="#+id/share_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/next_quote"
app:layout_constraintStart_toEndOf="#id/previous_quote"/>
<ImageView
android:id="#+id/next_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_next"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#id/share_quote" />

Try this..
<?xml version="1.0" encoding="utf-8"?><?xml version="1.0" encoding="utf-
8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/holo_blue_light">
<TextView
android:id="#+id/main_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Daily Quotes"
android:textAlignment="viewStart"
android:textColor="#android:color/white"
android:textSize="30dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="#+id/main_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_centerHorizontal="true"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:srcCompat="#mipmap/ic_launcher_round"
tools:layout_editor_absoluteY="89dp" />
<TextView
android:id="#+id/quote_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:text="This is a random text"
android:textColor="#android:color/white"
android:textSize="20dp"
app:layout_constraintTop_toBottomOf="#id/main_image" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="horizontal"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent">
<ImageView
android:id="#+id/previous_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_previous" />
<ImageView
android:id="#+id/share_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView
android:id="#+id/next_quote"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#android:drawable/ic_media_next" />
</LinearLayout>
</android.support.constraint.ConstraintLayout>