如何在 android api < 21 上添加海拔

Question

我在为

例如：如果我想按照材料设计为我的抽屉布局添加高程，我应该怎么做？

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="@dimen/nav_header_height"
    android:background="@drawable/side_nav_bar"
    android:gravity="bottom"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:theme="@style/ThemeOverlay.AppCompat.Dark">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        android:src="@drawable/ic_person_black_64dp" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        android:text="Android"
        android:textAppearance="@style/TextAppearance.AppCompat.Body1" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android studio" />

</LinearLayout>

Answer 1

一种解决方法是您可以将所有这些视图放入 CardView

只需将LinearLayout 放入CardView

例如：-

<android.support.v7.widget.CardView
    ....
    card_view:cardElevation="5dp"
    card_view:cardCornerRadius="0dp">


 <!--  other view that you want to elevate -->
 <DrawerLayout ../>  or <Toolbar  ---->

</android.support.v7.widget.CardView>