我正在尝试利用高程属性来显示阴影。从图像中可以看出,它在 Android Studio 中显示良好,但在设备上运行时,其中一个阴影消失了。为什么一个会显示而不显示另一个?
图片来自 Android Studio
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white_80"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="@+id/booking_details_top_block"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:elevation="4dp"
>
<LinearLayout
android:id="@+id/image_block"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_horizontal"
>
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="8dp"
android:background="@color/black"
/>
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="8dp"
android:background="@color/black"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_horizontal"
android:layout_margin="16dp"
android:padding="16dp"
android:background="@drawable/booking_detail_date_background"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
tools:text ="Tuesday, September 1"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
tools:text ="4:00 PM - 6:00 PM"
/>
</LinearLayout>
<TextView
android:id="@+id/bookings_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:paddingRight="16dp"
android:paddingLeft="16dp"
android:gravity="center_horizontal"
android:layout_gravity="center_horizontal"
android:background="@drawable/status_background"
android:textColor="@color/white"
tools:text="CONFIRMED"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_horizontal"
android:layout_marginTop="8dp"
android:padding="8dp"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:text ="@string/booking_details_brig"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
tools:text ="Lorena M."
/>
</LinearLayout>
<RatingBar
android:id="@+id/rate_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:stepSize="1"
style="@style/Widget.CustomRatingBar"
android:layout_gravity="center_horizontal"
android:layout_marginTop="8dp"
android:layout_marginBottom="24dp"
android:layout_marginRight="@dimen/dialog_horizontal_margin"
android:layout_marginLeft="@dimen/dialog_horizontal_margin"
/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
/>
</LinearLayout>
<include layout="@layout/widget_booking_details" />
</LinearLayout>
widget_booking_details
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
android:elevation="2dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="8dp"
android:paddingBottom="8dp"
>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="@dimen/booking_details_margin"
android:paddingTop="@dimen/booking_details_padding"
android:paddingBottom="@dimen/booking_details_padding"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_address"/>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:layout_gravity="center_vertical"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="22 Phitsanulok Rd, apt. 3"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="Khwaeng Dusit, Dusit"/>
</LinearLayout>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/white"
android:layout_marginStart="@dimen/booking_details_margin"
android:layout_marginEnd="@dimen/booking_details_margin"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="@dimen/booking_details_padding"
android:paddingBottom="@dimen/booking_details_padding"
>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="@dimen/booking_details_margin"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_services"/>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:layout_gravity="center_vertical"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="Waves after waves,"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:text="Evening glam"/>
</LinearLayout>
</LinearLayout>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="@dimen/booking_details_margin"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:src="@drawable/up_arrow"
android:background="@color/cream"
/>
</RelativeLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/white"
android:layout_marginStart="@dimen/booking_details_margin"
android:layout_marginEnd="@dimen/booking_details_margin"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="@dimen/booking_details_padding"
android:paddingBottom="@dimen/booking_details_padding"
>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="@dimen/booking_details_margin"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_cost"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center_vertical"
tools:text="24,600B"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/white"
android:layout_marginStart="@dimen/booking_details_margin"
android:layout_marginEnd="@dimen/booking_details_margin"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="@dimen/booking_details_padding"
android:paddingBottom="@dimen/booking_details_padding"
>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="@dimen/booking_details_margin"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_payment"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center_vertical"
tools:text="Mastercard ending 1234"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/white"
android:layout_marginStart="@dimen/booking_details_margin"
android:layout_marginEnd="@dimen/booking_details_margin"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="@dimen/booking_details_padding"
android:paddingBottom="@dimen/booking_details_padding"
>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="@dimen/booking_details_margin"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_booking_ref"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center_vertical"
tools:text="1639460503"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="@dimen/booking_details_padding"
android:paddingBottom="@dimen/booking_details_padding"
android:background="@color/white"
>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="@dimen/booking_details_margin"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_booking_help"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center_vertical"
android:text="@string/booking_details_booking_help_email"/>
<!--TODO make email an actual link-->
</LinearLayout>