SafeKeyboard/app/src/main/res/layout/keyboard_key_board_popu.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rl_key"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#00000000"
    android:orientation="vertical">

    <View
        android:id="@+id/keyboard_back_hide"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#7d7d7d"
        android:orientation="vertical">

        <RelativeLayout
            android:id="@+id/keyboard_header"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:visibility="visible">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:text="智能安全加密键盘"
                android:textColor="#bfbfbf"
                android:textSize="15sp" />

            <TextView
                android:id="@+id/keyboard_finish"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="10dp"
                android:padding="5dp"
                android:text="@string/finish"
                android:textColor="#ffffff"
                android:textSize="15sp" />
        </RelativeLayout>

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:layout_marginBottom="10dp"
            android:background="#555457" />

        <FrameLayout
            android:id="@+id/keyboard_layer"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <me.yoqi.android.safekeyboard.keyboard.CustomKeyboardView
                android:id="@+id/keyboard_view"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="#7d7d7d"
                android:focusable="true"
                android:focusableInTouchMode="true"
                android:keyBackground="@drawable/keyboard_number_selector_bg"
                android:keyPreviewLayout="@null"
                android:keyTextColor="#ffffff"
                android:visibility="gone" />

            <me.yoqi.android.safekeyboard.keyboard.CustomKeyboardView
                android:id="@+id/keyboard_view_2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="#7d7d7d"
                android:focusable="true"
                android:focusableInTouchMode="true"
                android:keyBackground="@drawable/keyboard_selector_bg"
                android:keyPreviewHeight="90dp"
                android:keyPreviewLayout="@layout/keyboard_key_preview_layout"
                android:keyPreviewOffset="45dp"
                android:keyTextColor="#ffffff"
                android:visibility="gone" />
        </FrameLayout>

    </LinearLayout>
</RelativeLayout>