I am trying to use your library in my project, but I have the following error.
<?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"
android:orientation="vertical"
tools:context=".views.ui.planner.NewPlannerActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay"
app:elevation="0dp"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_weight="1"
tools:title="Step 1" />
</com.google.android.material.appbar.AppBarLayout>
<View
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="@color/inspectionColorPrimary"
app:layout_constraintBottom_toTopOf="@id/guideline_stepper_middle"
app:layout_constraintTop_toBottomOf="@id/appbar" />
<androidx.cardview.widget.CardView
android:id="@+id/card_stepper"
style="@style/Stepper.CardView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="32dp"
app:layout_constraintTop_toBottomOf="@id/appbar"
tools:layout_editor_absoluteX="32dp">
<com.aceinteract.android.stepper.StepperNavigationView
android:id="@+id/stepper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingStart="16dp"
android:paddingTop="20dp"
android:paddingEnd="16dp"
android:paddingBottom="20dp"
app:stepperIconSize="20dp"
app:stepperItems="@menu/menu_new_planner_stepper"
app:stepperTextColor="@android:color/black"
app:stepperTextSize="12sp"
app:stepperTextAppearance="@style/Stepper.Label"
app:stepperType="@string/stepper_type_tab"
app:stepperWidgetColor="@color/inspectionColorAccent" />
</androidx.cardview.widget.CardView>
<androidx.fragment.app.FragmentContainerView
android:id="@+id/frame_stepper"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@id/guideline_stepper_middle"
app:navGraph="@navigation/nav_planner_stepper" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/button_next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/fab_margin"
android:contentDescription="@string/lbl_next_step"
android:src="@drawable/ic_visibility_off_black_24dp"
app:backgroundTint="@color/inspectionColorAccent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:tint="@android:color/white" />
<View
android:id="@+id/guideline_stepper_middle"
android:layout_width="match_parent"
android:layout_height="1dp"
app:layout_constraintBottom_toBottomOf="@id/card_stepper"
app:layout_constraintTop_toTopOf="@id/card_stepper" />
</androidx.constraintlayout.widget.ConstraintLayout>