Remove vertical padding from horizontal ProgressBar

I use the following as a workaround for this issue.

android:layout_marginBottom="-8dp"android:layout_marginTop="-4dp"

This is how I used Juozas's answer:

height of my ProgressBar is 4dp. So I created a FrameLayout with height 4dp and set the layout_gravity of ProgressBar to center. It's works like a charm.

<FrameLayout    android:layout_width="match_parent"    android:layout_height="4dp">    <ProgressBar        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="match_parent"        android:layout_height="4dp"        android:layout_gravity="center"        android:indeterminate="true" /></FrameLayout>

Note: What a FrameLayout does is it clips away anything excess, so if you face the problem where the ProgressBar is still thin, just set the layout_height of the ProgressBar to some large number like 100dp. It'll fully cover the FrameLayout and will only show 4dp of it.

If someone still needs help can try this:

<androidx.core.widget.ContentLoadingProgressBar    android:id="@+id/progress"    android:layout_width="match_parent"    android:layout_height="wrap_content"    style="@style/Widget.AppCompat.ProgressBar.Horizontal"    app:layout_constraintEnd_toEndOf="parent"    app:layout_constraintTop_toTopOf="@+id/guideline"    android:indeterminate="true"    android:visibility="visible"    app:layout_constraintBottom_toTopOf="@+id/guideline" />

Here, the progress bar is inside the ConstraintLayout, and the constraintTop_toTopOf and constraintBottom_toTopOf attributes must be applied to the same element (in this case, it is guideline).

*** COMPLETE SOLUTION:***

<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="48dp">    <View        android:id="@+id/guideline"        android:layout_width="0dp"        android:layout_height="0dp"        android:orientation="vertical"        android:visibility="invisible"        app:layout_constraintBottom_toBottomOf="parent"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintStart_toStartOf="parent" />    <ProgressBar        android:id="@+id/progress_bar"        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:indeterminate="true"        app:layout_constraintBottom_toTopOf="@+id/guideline"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintStart_toStartOf="parent"        app:layout_constraintTop_toTopOf="@+id/guideline" /></androidx.constraintlayout.widget.ConstraintLayout>