Balancing horizontally 2 TextViews and an ImageView between them according to text length - android-layout

Question

If Text1 is longer, than it should push everything to the right
If Text2 is longer, than it should push everything to the left
Otherwise, the arrow should be centered according to parent view
If any TextView exceeds, thus the whole view exceeds the parent view, then it should be trimmed (ellipsize)

Answer 1

You can achieve this using ConstraintLayout. Create a packed horizontal chain, and use wrap_content plus constrainedWidth on each text view:
<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="wrap_content">
<TextView
android:id="#+id/left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="1"
android:ellipsize="end"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toStartOf="#id/image"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constrainedWidth="true" />
<TextView
android:id="#+id/right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="1"
android:ellipsize="end"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toEndOf="#id/image"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constrainedWidth="true" />
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toEndOf="#id/left"
app:layout_constraintEnd_toStartOf="#id/right"
app:layout_constraintBottom_toBottomOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
If both text views have long text, you can control which one gets given space first by re-ordering the tags within the ConstraintLayout. This won't change how they're positioned; it will change only whether the left or right text stretches first.