wulkanowy-mod/app/src/main/res/layout/fragment_grade_statistics.xml

<LinearLayout 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=".ui.modules.grade.statistics.GradeStatisticsFragment">

    <LinearLayout
        android:id="@+id/gradeStatisticsSubjectsContainer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?android:attr/windowBackground"
        android:elevation="5dp"
        android:padding="5dp"
        android:visibility="invisible"
        tools:listitem="@layout/item_attendance_summary"
        tools:targetApi="lollipop"
        tools:visibility="visible">

        <androidx.appcompat.widget.AppCompatSpinner
            android:id="@+id/gradeStatisticsSubjects"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ellipsize="middle"
            android:entries="@array/endpoints_keys"
            android:paddingStart="10dp"
            android:paddingLeft="10dp"
            android:paddingTop="10dp"
            android:paddingEnd="30dp"
            android:paddingRight="30dp"
            android:paddingBottom="10dp"
            android:spinnerMode="dialog" />
    </LinearLayout>


    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
        android:id="@+id/gradeStatisticsSwipe"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fillViewport="true">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <RadioGroup
                    android:id="@+id/gradeStatisticsTypeSwitch"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:gravity="center"
                    android:orientation="horizontal"
                    android:paddingTop="5dp"
                    android:visibility="invisible"
                    tools:visibility="visible">

                    <RadioButton
                        android:id="@+id/gradeStatisticsTypePartial"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:checked="true"
                        android:tag="partial"
                        android:text="@string/grade_statistics_partial" />

                    <RadioButton
                        android:id="@+id/gradeStatisticsTypeSemester"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:tag="annual"
                        android:text="@string/grade_statistics_semester" />
                </RadioGroup>

                <FrameLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <com.github.mikephil.charting.charts.PieChart
                        android:id="@+id/gradeStatisticsChart"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_margin="10dp"
                        android:background="?android:attr/windowBackground"
                        android:minHeight="400dp"
                        android:visibility="gone"
                        tools:visibility="visible" />

                    <ProgressBar
                        android:id="@+id/gradeStatisticsProgress"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:indeterminate="true"
                        tools:visibility="gone" />

                    <LinearLayout
                        android:id="@+id/gradeStatisticsEmpty"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:gravity="center"
                        android:orientation="vertical"
                        android:visibility="invisible">

                        <androidx.appcompat.widget.AppCompatImageView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:minWidth="100dp"
                            android:minHeight="100dp"
                            app:srcCompat="@drawable/ic_menu_main_grade_26dp"
                            app:tint="?android:attr/textColorPrimary"
                            tools:ignore="contentDescription" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_marginTop="20dp"
                            android:gravity="center"
                            android:text="@string/grade_no_items"
                            android:textSize="20sp" />
                    </LinearLayout>
                </FrameLayout>
            </LinearLayout>
        </ScrollView>
    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
</LinearLayout>