View with minHeight in ConstraintLayout
I am using com.android.support.constraint:constraint-layout:1.0.2
and this works for me:
<android.support.v4.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"
android:orientation="vertical">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@drawable/gradient"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_min="1500dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>
Add this attribute to the view you'd like to have stretch:
app:layout_constraintHeight_default="spread"
I made a tiny app to demonstrate. No java logic to speak of, but here's the layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.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"
android:fillViewport="true">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
android:background="#caf">
<TextView
android:id="@+id/one"
android:layout_width="0dp"
android:layout_height="48dp"
android:gravity="center"
android:text="hello world"
android:background="#fff"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toTopOf="@+id/two"/>
<TextView
android:id="@+id/two"
android:layout_width="0dp"
android:layout_height="48dp"
android:gravity="center"
android:text="hello world"
android:background="#eee"
app:layout_constraintTop_toBottomOf="@+id/one"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toTopOf="@+id/three"/>
<TextView
android:id="@+id/three"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:text="hello world"
android:background="#ddd"
app:layout_constraintHeight_default="spread"
app:layout_constraintHeight_min="300dp"
app:layout_constraintTop_toBottomOf="@+id/two"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>
The bottom view stretches to fill the viewport when it is smaller than the remaining available space, and scrolling is impossible:
The bottom view maintains a fixed height when it is larger than the remaining available space, which makes scrolling possible: