Kélian Kélian -4 years ago 140
Android Question

How to include constraint layout to another constraint layout and set constraint between each

I'm using constraintLyout v 1.0.1.

I would like to include in my xml a sub ConstraintLayout corresponding to a part of my global layout (which itself is a ConstraintLayout). I split the layout in two xmls in order to use this sub part elsewhere

I tried this but I have no control on where to place my sub constraint layout in the parent. I wonder if I have to place everything in the same xml file or if their is a solution to use separate files.

tmp_1.xml

<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="@+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="LABEL1"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="16dp"
/>
<TextView
android:id="@+id/label_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="LABEL2"
app:layout_constraintStart_toStartOf="@id/label"
app:layout_constraintEnd_toEndOf="@id/label"
app:layout_constraintTop_toBottomOf="@id/label"
android:layout_marginTop="16dp"
/>

<include layout="@layout/tmp_2" />
</android.support.constraint.ConstraintLayout>


tmp_2.xml

<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="@+id/view_80"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="80th element"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="10dp"
android:layout_marginStart="12dp"
/>
</android.support.constraint.ConstraintLayout>


The result is this Actual result

But i want it to be this Expected result

I tried this but it does not work

<include
app:layout_constraintTop_toBottomOf="@id/label_2"
layout="@layout/tmp_2" />


I would be glad to have your solutions,

Thank you

Answer Source

Actually found a solution. Android Studio does not autocomplete constraintLayout parameters in an include tag but they do have an impact on it as long as you give that include a size.

<include
        layout="@layout/tmp_2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/label_2"
        />
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