ProjectLaogai/app/src/main/res/layout/fragment_settings.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
             tools:context=".fragments.SettingsFragment">

    <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

        <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="match_parent" app:layout_constraintTop_toTopOf="parent"
                app:layout_constraintStart_toStartOf="parent" app:layout_constraintEnd_toEndOf="parent"
        >
            <androidx.cardview.widget.CardView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="9dp" android:id="@+id/cardView_Info" app:cardElevation="5dp"
                    app:cardUseCompatPadding="true">
                <LinearLayout
                        android:orientation="vertical"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content">
                    <TextView
                            android:text="@string/info"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" android:id="@+id/txtView_Info"
                            android:typeface="sans"
                            android:textSize="18sp" android:textStyle="bold" android:fontFamily="sans-serif"
                            android:layout_margin="7dp" android:textColor="@color/colorPrimary"/>
                    <LinearLayout
                            android:orientation="vertical"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" android:padding="7dp" android:id="@+id/linLayout_User">
                        <TextView
                                android:text="@string/sample_user"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:id="@+id/txtView_User"
                                android:textSize="16sp" android:textStyle="bold"
                                android:textColor="@android:color/primary_text_light"/>
                        <TextView
                                android:text="@string/user"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:id="@+id/txtView_UserDesc"/>
                    </LinearLayout>
                    <View
                            android:id="@+id/divider2"
                            android:layout_width="match_parent"
                            android:layout_height="1dp"
                            android:background="?android:attr/listDivider"
                    />
                    <LinearLayout
                            android:orientation="vertical"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" android:layout_margin="7dp"
                            android:id="@+id/linLayout_Course">
                        <TextView
                                android:text="@string/sample_course"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:id="@+id/txtView_Course"
                                android:textSize="16sp" android:textColor="@android:color/primary_text_light"
                                android:textStyle="bold"/>
                        <TextView
                                android:text="@string/course_desc"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:id="@+id/txtView_CourseDesc"/>
                    </LinearLayout>
                    <View
                            android:id="@+id/divider"
                            android:layout_width="match_parent"
                            android:layout_height="1dp"
                            android:background="?android:attr/listDivider"
                    />
                    <LinearLayout
                            android:orientation="vertical"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent" android:layout_margin="7dp"
                            android:id="@+id/linLayout_Info">
                        <TextView
                                android:text="@string/about_txtView"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:id="@+id/txtView_About"
                                android:textStyle="bold" android:textSize="16sp"
                                android:textColor="@android:color/primary_text_light"/>
                        <TextView
                                android:text="@string/version"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:id="@+id/txtView_Version"/>
                    </LinearLayout>
                </LinearLayout>
            </androidx.cardview.widget.CardView>
            <androidx.cardview.widget.CardView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:id="@+id/cardView_Settings" app:cardElevation="5dp"
                    app:cardUseCompatPadding="true">
                <LinearLayout
                        android:orientation="vertical"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content" android:id="@+id/linLayout_Settings">
                    <TextView
                            android:text="@string/settings"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" android:id="@+id/txtView_Settings"
                            android:typeface="sans"
                            android:textSize="18sp" android:textColor="@color/design_default_color_primary"
                            android:textStyle="bold" android:layout_margin="7dp" android:paddingTop="3dp"/>
                    <LinearLayout
                            android:orientation="horizontal"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content" android:layout_margin="7dp"
                            android:gravity="center_vertical|end"
                            android:clickable="true" android:id="@+id/linLayout_MainColor" android:focusable="true">
                        <LinearLayout
                                android:orientation="vertical"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content">
                            <TextView
                                    android:text="@string/primary_color"
                                    android:layout_width="match_parent"
                                    android:layout_height="wrap_content" android:id="@+id/txtView_PrimaryColor"
                                    android:textSize="16sp" android:textStyle="bold"
                                    android:textColor="@android:color/primary_text_light"/>
                            <TextView
                                    android:text="@string/main_color_desc"
                                    android:layout_width="match_parent"
                                    android:layout_height="wrap_content" android:id="@+id/txtView_PrimaryColorDesc"/>
                        </LinearLayout>
                        <LinearLayout
                                android:orientation="vertical"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content" android:layout_margin="7dp"
                                android:gravity="end">
                            <View
                                    android:layout_width="40dp"
                                    android:layout_height="40dp" android:id="@+id/view_PrimaryColor"
                                    android:background="?colorPrimary"/>
                        </LinearLayout>
                    </LinearLayout>
                </LinearLayout>
            </androidx.cardview.widget.CardView>
        </LinearLayout>
    </androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>