Android-key-of-love/app/src/main/res/layout/my_keyboard.xml

<androidx.coordinatorlayout.widget.CoordinatorLayout
    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/rootCoordinator"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#F6F7FB"
    tools:context=".ui.home.MyKeyboard">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="@dimen/sw_323dp"
        android:src="@drawable/my_keyboard_bg"
        android:scaleType="fitXY"
        android:adjustViewBounds="true" />
    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
        android:id="@+id/swipeRefresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true"
        android:overScrollMode="never">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_horizontal"
            android:orientation="vertical">
            <!-- 标题和返回 -->
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:padding="@dimen/sw_16dp"
                android:gravity="center_vertical">
                <!-- 返回按钮 -->
                <FrameLayout
                    android:id="@+id/iv_close"
                    android:layout_width="@dimen/sw_46dp"
                    android:layout_height="@dimen/sw_46dp">
                    <ImageView
                        android:layout_width="@dimen/sw_13dp"
                        android:layout_height="@dimen/sw_13dp"
                        android:layout_gravity="center"
                        android:src="@drawable/more_icons"
                        android:rotation="180"
                        android:scaleType="fitCenter" />
                </FrameLayout>

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:layout_marginEnd="@dimen/sw_49dp"
                    android:gravity="center"
                    android:textStyle="bold"
                    android:text="@string/keyboard_title"
                    android:textColor="#1B1F1A"
                    android:textSize="@dimen/sw_16sp" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="@dimen/sw_200dp"
                android:padding="@dimen/sw_15dp"
                android:layout_marginTop="@dimen/sw_90dp"
                android:background="@drawable/mykeyboard_bg"
                android:orientation="vertical">

                <FrameLayout
                    android:id="@+id/keyboardListContainer"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:minHeight="@dimen/sw_200dp">

                    <androidx.recyclerview.widget.RecyclerView
                        android:id="@+id/rv_keyboard"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:overScrollMode="never"
                        tools:listitem="@layout/item_keyboard_character" />

                    <FrameLayout
                        android:id="@+id/noResultOverlay"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:visibility="gone"
                        android:clickable="true"
                        android:focusable="true"
                        android:importantForAccessibility="no">

                        <LinearLayout
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center"
                            android:orientation="vertical"
                            android:gravity="center_horizontal">

                            <ImageView
                                android:id="@+id/noResultImage"
                                android:layout_width="@dimen/sw_175dp"
                                android:layout_height="@dimen/sw_177dp"
                                android:src="@drawable/no_search_result"
                                android:scaleType="fitCenter"
                                android:contentDescription="@null"
                                android:importantForAccessibility="no" />

                            <TextView
                                android:id="@+id/noResultText"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:gravity="center"
                                android:textAlignment="center"
                                android:text="@string/search_not_data"
                                android:textSize="@dimen/sw_13sp"
                                android:textColor="#1B1F1A"
                                android:includeFontPadding="false" />
                        </LinearLayout>
                    </FrameLayout>
                </FrameLayout>

            </LinearLayout>
        </LinearLayout>
    </androidx.core.widget.NestedScrollView>
    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
    
    <TextView
        android:id="@+id/btn_keyboard"
        android:layout_width="@dimen/sw_343dp"
        android:layout_height="@dimen/sw_45dp"
        android:layout_marginBottom="@dimen/sw_16dp"
        android:layout_gravity="bottom|center_horizontal"
        android:gravity="center"
        android:text="@string/save"
        android:textColor="#FFFFFF"
        android:textSize="@dimen/sw_16sp"
        android:background="@drawable/my_keyboard_delete"
        android:clickable="true"
        android:focusable="true"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>