Quelle  activity_notifications.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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:id="@+id/parent_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/transparent"
    android:clipToPadding="false">

    <com.google.android.material.card.MaterialCardView
        android:id="@+id/card_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/grid_unit_x2"
        app:cardBackgroundColor="?attr/colorSurfaceContainer"
        app:cardCornerRadius="22dp"
        app:cardElevation="1dp"
        app:contentPaddingLeft="@dimen/grid_unit_x2"
        app:contentPaddingRight="@dimen/grid_unit_x2"
        app:strokeWidth="0dp">

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

            <com.google.android.material.card.MaterialCardView
                android:id="@+id/work_life_warning"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/grid_unit_x2"
                android:clickable="false"
                android:focusable="false"
                android:outlineProvider="none"
                android:visibility="gone"
                app:cardBackgroundColor="?attr/colorSurfaceContainerLow"
                app:cardCornerRadius="@dimen/cardview_border_radius"
                app:cardElevation="8dp"
                app:contentPadding="@dimen/grid_unit_x1"
                app:strokeWidth="0dp"
                tools:visibility="visible">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal"
                    tools:ignore="UseCompoundDrawables">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="start|center_vertical"
                        android:layout_marginStart="@dimen/grid_unit_x0_5"
                        android:contentDescription="@string/info"
                        app:srcCompat="@drawable/ic_info_outline"
                        app:tint="?attr/colorOnSurface" />

                    <TextView
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_vertical"
                        android:layout_marginStart="@dimen/grid_unit_x1"
                        android:layout_weight="1"
                        android:singleLine="true"
                        android:text="@string/work_life_dnd_active"
                        android:textColor="?attr/colorOnSurface" />

                </LinearLayout>

            </com.google.android.material.card.MaterialCardView>

            <com.google.android.material.card.MaterialCardView
                android:id="@+id/notification_sound_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/grid_unit_x2"
                android:clickable="false"
                android:focusable="false"
                android:outlineProvider="none"
                app:cardBackgroundColor="?attr/colorSurfaceContainerLow"
                app:cardCornerRadius="@dimen/cardview_border_radius"
                app:cardElevation="8dp"
                app:contentPadding="@dimen/grid_unit_x1"
                app:strokeWidth="0dp">

                <androidx.appcompat.widget.LinearLayoutCompat
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:paddingVertical="@dimen/grid_unit_x1">

                    <TextView
                        style="@style/Threema.MaterialAlertDialog.Title.Style"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginHorizontal="@dimen/grid_unit_x0_5"
                        android:text="@string/prefs_notification_sound" />

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

                        <RadioGroup
                            android:id="@+id/sound_radio_group"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent">

                            <RadioButton
                                android:id="@+id/radio_sound_default"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:layout_marginEnd="@dimen/grid_unit_x4"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                android:singleLine="true"
                                android:text="@string/notifications_default"
                                tools:checked="true" />

                            <TextView
                                android:id="@+id/text_sound_default"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginStart="36dp"
                                android:ellipsize="end"
                                android:singleLine="true"
                                tools:text="Sunlight" />

                            <RadioButton
                                android:id="@+id/radio_sound_none"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                android:text="@string/notifications_mute" />

                            <RadioButton
                                android:id="@+id/radio_sound_custom"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                android:text="@string/notifications_choose_sound" />

                            <TextView
                                android:id="@+id/text_sound"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:layout_marginStart="36dp"
                                android:ellipsize="end"
                                android:singleLine="true"
                                tools:text="Sunlight" />

                        </RadioGroup>

                        <com.google.android.material.button.MaterialButton
                            android:id="@+id/prefs_button"
                            style="@style/Threema.MaterialButton.Minimal"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="end|top"
                            android:layout_marginTop="@dimen/grid_unit_x1"
                            android:contentDescription="@string/menu_settings"
                            android:visibility="visible"
                            app:icon="@drawable/ic_settings_outline_24dp" />

                    </FrameLayout>

                </androidx.appcompat.widget.LinearLayoutCompat>

            </com.google.android.material.card.MaterialCardView>

            <com.google.android.material.card.MaterialCardView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/grid_unit_x2"
                android:clickable="false"
                android:focusable="false"
                android:outlineProvider="none"
                app:cardBackgroundColor="?attr/colorSurfaceContainerLow"
                app:cardCornerRadius="@dimen/cardview_border_radius"
                app:cardElevation="8dp"
                app:contentPadding="@dimen/grid_unit_x1"
                app:strokeWidth="0dp">

                <androidx.appcompat.widget.LinearLayoutCompat
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:paddingVertical="@dimen/grid_unit_x1">

                    <TextView
                        style="@style/Threema.MaterialAlertDialog.Title.Style"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginHorizontal="@dimen/grid_unit_x0_5"
                        android:text="@string/dnd" />

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:animateLayoutChanges="true"
                        android:gravity="bottom"
                        android:orientation="horizontal">

                        <RadioGroup
                            android:id="@+id/duration_radio_group"
                            android:layout_width="0dp"
                            android:layout_height="wrap_content"
                            android:layout_weight="1">

                            <RadioButton
                                android:id="@+id/radio_silent_off"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                android:text="@string/switched_off"
                                tools:checked="true" />

                            <RadioButton
                                android:id="@+id/radio_silent_except_mentions"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                android:text="@string/off_unless_i_was_mentioned"
                                android:visibility="gone"
                                tools:visibility="visible" />

                            <RadioButton
                                android:id="@+id/radio_silent_unlimited"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                android:text="@string/switched_on" />

                            <RadioButton
                                android:id="@+id/radio_silent_limited"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/grid_unit_x1"
                                android:layout_marginEnd="@dimen/grid_unit_x1"
                                android:paddingStart="@dimen/grid_unit_x0_5"
                                tools:text="For 1 hour" />

                        </RadioGroup>

                        <LinearLayout
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_marginTop="@dimen/grid_unit_x1"
                            android:layout_marginEnd="@dimen/grid_unit_x1"
                            android:gravity="center_vertical">

                            <com.google.android.material.card.MaterialCardView
                                android:id="@+id/duration_minus"
                                android:layout_width="@dimen/grid_unit_x4"
                                android:layout_height="@dimen/grid_unit_x4"
                                android:layout_marginEnd="@dimen/grid_unit_x2"
                                android:elevation="0dp"
                                android:outlineProvider="none"
                                app:cardBackgroundColor="?attr/colorPrimary"
                                app:cardCornerRadius="@dimen/grid_unit_x4"
                                app:cardElevation="0dp"
                                app:cardUseCompatPadding="false"
                                app:strokeWidth="0dp"
                                tools:alpha="0.2"
                                tools:enabled="false">

                                <ImageView
                                    android:layout_width="@dimen/grid_unit_x3"
                                    android:layout_height="@dimen/grid_unit_x3"
                                    android:layout_gravity="center"
                                    android:contentDescription="@string/minus"
                                    android:src="@drawable/ic_minus"
                                    app:tint="?attr/colorOnPrimary" />

                            </com.google.android.material.card.MaterialCardView>

                            <com.google.android.material.card.MaterialCardView
                                android:id="@+id/duration_plus"
                                android:layout_width="@dimen/grid_unit_x4"
                                android:layout_height="@dimen/grid_unit_x4"
                                android:elevation="0dp"
                                android:outlineProvider="none"
                                app:cardBackgroundColor="?attr/colorPrimary"
                                app:cardCornerRadius="@dimen/grid_unit_x4"
                                app:cardElevation="0dp"
                                app:cardUseCompatPadding="false"
                                app:strokeWidth="0dp"
                                tools:alpha="0.2"
                                tools:enabled="false">

                                <ImageView
                                    android:layout_width="@dimen/grid_unit_x3"
                                    android:layout_height="@dimen/grid_unit_x3"
                                    android:layout_gravity="center"
                                    android:contentDescription="@string/plus"
                                    android:src="@drawable/ic_add"
                                    app:tint="?attr/colorOnPrimary" />

                            </com.google.android.material.card.MaterialCardView>

                        </LinearLayout>

                    </LinearLayout>

                </androidx.appcompat.widget.LinearLayoutCompat>

            </com.google.android.material.card.MaterialCardView>

            <com.google.android.material.card.MaterialCardView
                android:id="@+id/individual_settings_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/grid_unit_x2"
                android:clickable="false"
                android:focusable="false"
                android:outlineProvider="none"
                app:cardBackgroundColor="?attr/colorSurfaceContainerLow"
                app:cardCornerRadius="@dimen/cardview_border_radius"
                app:cardElevation="8dp"
                app:contentPadding="@dimen/grid_unit_x1"
                app:strokeWidth="0dp">

                <RelativeLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">

                    <TextView
                        android:id="@+id/individual_settings_text"
                        style="@style/Threema.TextAppearance.BodyMedium"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_centerVertical="true"
                        android:layout_toLeftOf="@+id/individual_settings_switch"
                        android:clickable="true"
                        android:drawablePadding="@dimen/grid_unit_x1_5"
                        android:focusable="true"
                        android:foreground="?android:attr/selectableItemBackground"
                        android:padding="@dimen/grid_unit_x0_5"
                        android:text="@string/individual_notification_settings"
                        android:textColor="?attr/colorOnSurface"
                        app:drawableLeftCompat="@drawable/ic_settings_outline_24dp"
                        app:drawableTint="?attr/colorOnSurface" />

                    <com.google.android.material.materialswitch.MaterialSwitch
                        android:id="@+id/individual_settings_switch"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_alignParentEnd="true"
                        android:layout_centerVertical="true"
                        android:layout_margin="@dimen/grid_unit_x0_5" />

                </RelativeLayout>

            </com.google.android.material.card.MaterialCardView>

            <com.google.android.material.button.MaterialButton
                android:id="@+id/done_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="end"
                android:layout_marginTop="@dimen/grid_unit_x2"
                android:layout_marginBottom="@dimen/grid_unit_x1_5"
                android:text="@string/menu_done" />

        </LinearLayout>

    </com.google.android.material.card.MaterialCardView>

</ScrollView>