<?xml version="1.0" encoding="utf-8"?>
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent">
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<!-- 主要内容区域 -->
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<LinearLayout
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:layout_above="@+id/bottom_navigation"
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android:orientation="vertical">
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<!-- 倒数日列表 -->
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<androidx.recyclerview.widget.RecyclerView
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android:id="@+id/countdown_list"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:padding="16dp" />
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</LinearLayout>
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<!-- 底部导航栏 -->
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<LinearLayout
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android:id="@+id/bottom_navigation"
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android:layout_width="match_parent"
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android:layout_height="56dp"
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android:layout_alignParentBottom="true"
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android:background="#FFFFFF"
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android:orientation="horizontal"
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android:elevation="8dp">
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<ImageButton
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android:id="@+id/btn_add"
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android:layout_width="0dp"
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android:layout_height="match_parent"
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android:layout_weight="1"
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android:background="?android:attr/selectableItemBackground"
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android:src="@drawable/ic_add"
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android:contentDescription="添加"/>
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<ImageButton
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android:id="@+id/btn_edit"
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android:layout_width="0dp"
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android:layout_height="match_parent"
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android:layout_weight="1"
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android:background="?android:attr/selectableItemBackground"
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android:src="@drawable/ic_edit"
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android:contentDescription="编辑"/>
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<ImageButton
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android:id="@+id/btn_delete"
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android:layout_width="0dp"
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android:layout_height="match_parent"
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android:layout_weight="1"
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android:background="?android:attr/selectableItemBackground"
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android:src="@drawable/ic_delete"
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android:contentDescription="删除"/>
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</LinearLayout>
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</RelativeLayout>
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