Hey I am working in android Constraint layout. In my xml I used constraint layout with linear layout. I want to know is there in any way, I can use only constraint layout remove other children layout like linear layout.
item_layout.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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="10dp"
android:orientation="vertical">
<LinearLayout
android:id="#+id/container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:background="#drawable/item_selector_background"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dp"
tools:text="25mg" />
<TextView
android:id="#+id/subtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_marginBottom="8dp"
tools:text="from $1.65" />
</LinearLayout>
<LinearLayout
android:id="#+id/tagContainer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/item_tag_background"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
tools:visibility="visible">
<TextView
android:id="#+id/tagText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingStart="10dp"
android:paddingEnd="10dp" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
My view look like this
I only want to achieve this through constraint layout.
There is definitely a way to do it. Something like this may work for you:
<ConstraintLayout>
<TextView
android:id="#+id/text
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="25mg" />
<TextView
android:id="#+id/subtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_marginBottom="8dp"
app:layout_constraintTop_toBottomOf="#id/text"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toTopOf="#id/tagText"
tools:text="from $1.65" />
<TextView
android:id="#+id/tagText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingStart="10dp"
android:paddingEnd="10dp"
app:layout_constraintTop_toBottomOf="#id/subtext"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
</ConstraintLayout>
Just pull the child layouts out and constrain the views the way that you want them.
Note: This is not exact. You may have to play with the constraints to get them the way you want it.
You can use View behind them to set background for the first two TextViews like,
<ConstraintLayout
...>
<View
android:id="#+id/backgroundView"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#drawable/item_selector_background"
app:layout_constraintTop_toTopOf="#id/text"
app:layout_constraintEnd_toEndOf="#id/subtext"
app:layout_constraintStart_toStartOf="#id/subtext"
app:layout_constraintBottom_toBottomOf="#id/subtext"/>
<TextView
android:id="#+id/text"
...
/>
<TextView
android:id="#+id/subtext"
...
/>
<TextView
android:id="#+id/tagText"
...
/>
...
</ConstraintLayout>
the height and width of the backgroundView can be constrained to match the first two TextViews
Related
I am new to android and constraint layout, can you please help me create this layout using only Constraint Layout and Text Views? Don't bother with text/color, just the layout itself.
This is what I have so far, layout seems ok but not quite like in the picture. I don't know if just the different resolution or aspect ratio.
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView45"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#color/blackk"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView49"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView47"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#color/teal_200"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView46"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView45" />
<TextView
android:id="#+id/textView46"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#android:color/darker_gray"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView50" />
<TextView
android:id="#+id/textView48"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#color/Accent"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView46"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView45" />
<TextView
android:id="#+id/textView49"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#android:color/holo_green_dark"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView50"
app:layout_constraintEnd_toStartOf="#+id/textView48"
app:layout_constraintStart_toEndOf="#+id/textView47"
app:layout_constraintTop_toBottomOf="#+id/textView45" />
<TextView
android:id="#+id/textView50"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#android:color/holo_green_light"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView46"
app:layout_constraintEnd_toStartOf="#+id/textView48"
app:layout_constraintStart_toEndOf="#+id/textView47"
app:layout_constraintTop_toBottomOf="#+id/textView49" />
</androidx.constraintlayout.widget.ConstraintLayout>
Did some modifications in the margins of these two. Now, the layout is looking similar to the one in the image you showed:
<TextView
android:id="#+id/textView49"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:background="#android:color/holo_green_dark"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView50"
app:layout_constraintEnd_toStartOf="#+id/textView48"
app:layout_constraintStart_toEndOf="#+id/textView47"
app:layout_constraintTop_toBottomOf="#+id/textView45" />
<TextView
android:id="#+id/textView50"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:background="#android:color/holo_green_light"
android:text="TextView"
app:layout_constraintBottom_toTopOf="#+id/textView46"
app:layout_constraintEnd_toStartOf="#+id/textView48"
app:layout_constraintStart_toEndOf="#+id/textView47"
app:layout_constraintTop_toBottomOf="#+id/textView49" />
You can further increase the margins but that's upto you.
Edit: I would suggest you playing with layout_constraintHeight_percent attribute to solve those height irregularities.
Solved
I have a scroll view that has a Constraint Layout layout inside of it. I Have a button that is constraint to the bottom of the table but it seems to change the background below the table to gray. all other widgets that I have added do not have the same problem.
Screenshot of problem
I removed the inner code of the table as its not need
<ScrollView 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">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/gaapic" />
<androidx.cardview.widget.CardView
android:id="#+id/homecard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="5dp"
app:cardBackgroundColor="#color/white"
app:cardCornerRadius="15dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.8"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView3">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="12dp"
android:padding="12dp"
android:text="#string/recent_news"
android:textColor="#color/black"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="#+id/tvhomePageDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="9"
android:gravity="center"
android:text="#string/publish_date"
android:textColor="#color/black"
android:textSize="14sp"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="12dp"
android:lineSpacingMultiplier="1.5"
android:padding="12dp"
android:text="#string/in_news"
android:textSize="13sp" />
</LinearLayout>
</androidx.cardview.widget.CardView>
<TableLayout
android:id="#+id/tableLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:background="#android:color/white"
android:elevation="90dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/homecard">
<!-- Table Heading -->
<TableRow android:background="#color/teal_200">
</TableLayout>
<TextView
android:id="#+id/tvTimeCheck"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.092"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tableLayout"
app:layout_constraintVertical_bias="0.589" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Live"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tableLayout"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
Try adding the following to either your ScrollView or ConstraintLayout:
android:background="#android:color/white"
Solved:
I solved my problem by putting the table inside of another Constraint Layout. I don't know if that is best practice but it works for now. Thank you #Shn_Android_Dev
Have you tryed to add .setBackgroundDrawable(null) to you button inside your class?
Example:
yourButton.setBackgroundDrawable(null);
I am using Constraintlayout and I want to place my Textview on my Imageview, it is supposed to look like this after I'm done: https://i.stack.imgur.com/mYAws.png but each time I add constraints to the texts(Vertically and horizontally), the texts disorganizes and goes totally from how I want it to be,
Sometimes even shifting my images. I have tried severally to adjust it well to no avail
My layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView 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:fillViewport="true">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".FirstFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Current"
android:textColor="#FF3D19"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="358dp"
android:layout_height="337dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView3"
app:srcCompat="#drawable/orange_panel" />
<ImageView
android:id="#+id/imageView4"
android:layout_width="146dp"
android:layout_height="151dp"
android:layout_marginStart="45dp"
android:layout_marginTop="7dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView3"
app:srcCompat="#drawable/green_panel" />
<ImageView
android:id="#+id/imageView5"
android:layout_width="146dp"
android:layout_height="151dp"
android:layout_marginTop="6dp"
android:layout_marginEnd="44dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView3"
app:srcCompat="#drawable/pink_panel" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tonight"
android:textColor="#FFFFFF"
android:textSize="18sp"
tools:layout_editor_absoluteX="89dp"
tools:layout_editor_absoluteY="415dp" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tomorrow"
android:textColor="#FFFFFF"
android:textSize="18sp"
tools:layout_editor_absoluteX="254dp"
tools:layout_editor_absoluteY="415dp" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
The answer is pretty straightforward. First you should delete this lines from both text views.
tools:layout_editor_absoluteX="254dp"
tools:layout_editor_absoluteY="415dp"
Then all you need to do is add constraints like this. Below are constraints for your image
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
And the constraints for your text view would be like this.
app:layout_constraintEnd_toEndOf="#+id/image_view"
app:layout_constraintStart_toStartOf="#+id/image_view"
app:layout_constraintTop_toTopOf="#+id/image_view"
Of course you can add different constraints for the image because i do not know how do you want to position the image view in the app. But if you want a text view to be inside the image like in the link you sent then the constraints for the text view will be always like this.
It's all about tools:layout_editor_absoluteX and tools:layout_editor_absoluteY for yours textView3 and textView4. Also i think you do not know for what namespace tools exist.
Check the example below; it shows you what constraints can be used to get in the direction of your layout goals.
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView 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">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Current"
android:textColor="#FF3D19"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_marginTop="16dp"
android:background="#00FF00"
android:textColor="#FFFFFF"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView1" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_marginTop="16dp"
android:background="#0000FF"
app:layout_constraintStart_toStartOf="#+id/imageView1"
app:layout_constraintTop_toBottomOf="#+id/imageView1" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_marginTop="16dp"
android:background="#FF0000"
app:layout_constraintEnd_toEndOf="#+id/imageView1"
app:layout_constraintTop_toBottomOf="#+id/imageView1" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tonight"
android:textColor="#FFFFFF"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="#+id/imageView2"
app:layout_constraintEnd_toEndOf="#+id/imageView2"
app:layout_constraintStart_toStartOf="#+id/imageView2"
app:layout_constraintTop_toTopOf="#+id/imageView2" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tomorrow"
android:textColor="#FFFFFF"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="#+id/imageView3"
app:layout_constraintEnd_toEndOf="#+id/imageView3"
app:layout_constraintStart_toStartOf="#+id/imageView3"
app:layout_constraintTop_toTopOf="#+id/imageView3" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
See how this example looks: screenshot.
I have a ScrollView contains a ConstraintLayout. Inside the ConstraintLayout, I put many views with an attribute layout_constraintTop_toBottomOf to make a relation between the view and the view top of it, and I used layout_marginTop to put spaces between the views.
In my design, I have a Button that should be in the bottom of the layout and it cannot happen with the layout_marginTop because it should have a relation with the bottom of the ConstraintLayout.
Here's my code:
<ScrollView 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.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="10dp"
android:paddingBottom="10dp">
<TextView
android:id="#+id/logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_margin="120dp"
android:text="Logo"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="#+id/un_et"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="25dp"
android:layout_marginRight="28dp"
android:gravity="center"
android:hint="User name"
android:textColor="#bebebe"
android:textCursorDrawable="#null"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/logo" />
<EditText
android:id="#+id/pw_et"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="13dp"
android:layout_marginRight="28dp"
android:gravity="center"
android:hint="Password"
android:inputType="textPassword"
android:textColor="#bebebe"
android:textCursorDrawable="#null"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#id/un_et" />
<RelativeLayout
android:id="#+id/save_pw"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:paddingLeft="28dp"
android:paddingRight="28dp"
app:layout_constraintTop_toBottomOf="#id/pw_et">
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:buttonTint="#bebebe"
android:text="Save account"
android:textColor="#bebebe" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="Forget password?"
android:textColor="#a40000" />
</RelativeLayout>
<Button
android:id="#+id/btn"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="17dp"
android:layout_marginRight="28dp"
android:text="Login"
android:textAllCaps="false"
android:textColor="#FFFFFF"
app:layout_constraintTop_toBottomOf="#id/save_pw" />
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="Sign up"
android:textAllCaps="false"
android:textColor="#FFFFFF"
app:layout_constraintTop_toBottomOf="#id/btn" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
Replace ScrollView with NestedScrollView & also add android:fillViewport="true" like this
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
// rest of code
<Button
android:id="#+id/btn2"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="Sign up"
android:textAllCaps="false"
android:textColor="#FFFFFF"
app:layout_constraintVertical_bias="1"
app:layout_constraintTop_toBottomOf="#id/btn"
app:layout_constraintBottom_toBottomOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
Just set this property to your button:
app:layout_constraintBottom_toBottomOf="parent"
Then add this to your last view this property:
app:layout_constraintBottom_toTopOf="#+id/button"
Also, add to your last view:
android:layout_marginBottom="height_of_button"
However, if you are adding a lot of views it would be better to populate them inside a RecyclerView using an Adapter. Decide what you want to do. Also, tell me if I understood your question correctly, it was a bit confusing.
I found one solution to keep the button at the bottom, doesn't matter is your text is dynamic, read about app:layout_constraintVertical_bias https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintLayout#Bias
<?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">
<TextView
android:id="#+id/text_gallery"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:textAlignment="center"
android:textSize="20sp"
android:text="Title"
app:layout_constraintTop_toTopOf="parent"/>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
android:fillViewport="true"
app:layout_constraintTop_toBottomOf="#id/text_gallery"
app:layout_constraintBottom_toBottomOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:isScrollContainer="true">
<androidx.appcompat.widget.AppCompatTextView
app:layout_constraintTop_toTopOf="parent"
android:id="#+id/texto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="30sp"
android:text=" Text \n Text" />
<androidx.appcompat.widget.AppCompatButton
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Buton1"
app:layout_constraintVertical_bias="1"
app:layout_constraintTop_toBottomOf="#+id/texto"
app:layout_constraintBottom_toBottomOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
I want to create a chain in constraint layout that is spread but keeping the title and the text together, without a gap between them.
I am trying to achieve the same view, but without the linear layout and instead a flat constraint layout:
<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/scrollView3"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.exampleapp.fragments.carousel.MainCarouselOneFragment">
<ImageView
android:id="#+id/image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/main_carousel_image_2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textview1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:paddingEnd="8dp"
android:paddingStart="8dp"
android:text="#string/text1"
android:textAlignment="center"
android:textColor="#color/grey_transparent_50"
android:textSize="10sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image_view" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:lineSpacingExtra="4sp"
android:text="#string/text2"
android:textAlignment="center"
android:textColor="#color/grey_transparent_50"
android:textSize="10sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#id/textview1" />
<LinearLayout
android:id="#+id/ll_title_and_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintBottom_toTopOf="#+id/find_out_more_btn"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView2">
<TextView
android:id="#+id/textView3"
style="#style/TextAppearance.Actionbar.Title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="#string/text3" />
<TextView
android:id="#+id/textView4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:lineSpacingExtra="0sp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:text="#string/text4"
android:textSize="#dimen/text_size_small" />
</LinearLayout>
<Button
android:id="#+id/find_out_more_btn"
style="#style/Widget.Button.Secondary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/colorAccent"
android:text="#string/find_out_more"
android:textColor="#color/white"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/ll_title_and_text" />
</android.support.constraint.ConstraintLayout>
Could you please advise me if this is possible and if so, how to do it?
If I understand correctly, you want to create the layout as per the screenshot but without using a LinearLayout. If that is the case, then this should be possible if you ignore the fact that there are view pairs when you create the vertical chains. In other words, think about the positioning of textView1, textView3 and Button first, and then worry about the positioning of textView2 and textView4.
It's a bit tricky to explain, so I have created a simple layout that should do what you need. In order to create this layout, I constrained textView1 to the imageView, and textView3 to textView1. Then I created vertical chains between textView3 and button. Finally, I constrained textView2 to textView1 and textView4 to textView3. (I assumed that you wanted textView1 directly below the image)
<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">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#color/colorPrimary" />
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image"
tools:text="text1" />
<TextView
android:id="#+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text1"
tools:text="text2" />
<TextView
android:id="#+id/text3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="#+id/button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text1"
tools:text="text3" />
<TextView
android:id="#+id/text4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text3"
tools:text="text4" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text3"
tools:text="More" />
This should give you something like: