![](/img/trans.png)
[英]FAB button not showing drawable properly inside android studio layout editor
[英]Custom drawable not showing properly when applied to a layout
我设计了一个自定义形状
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:bottom="0dp"
android:left="30dp"
android:right="30dp"
android:top="-30dp">
<shape android:shape="rectangle">
<size
android:width="80dp"
android:height="40dp" />
<solid android:color="@color/colorPrimary" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="10dp"
android:topRightRadius="10dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<size
android:width="100dp"
android:height="40dp" />
<solid android:color="@color/colorPrimary" />
<corners android:radius="0dp" />
</shape>
</item>
</layer-list>
现在,当我尝试将它应用到底部BottomSheet
布局背景时,它没有任何效果,只是用蓝色背景覆盖了整个屏幕(它变成了一个纯蓝色矩形)
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/background_features"
android:padding="32dp"
app:behavior_hideable="false"
app:behavior_peekHeight="@dimen/partial_features_peek_height_50dp"
app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">
如何在其形状中应用此自定义背景
你可以试试看
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:bottom="0dp"
android:left="30dp"
android:right="30dp">
<shape android:shape="rectangle">
<size
android:width="80dp"
android:height="40dp"/>
<solid android:color="@color/colorPrimary"/>
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="10dp"
android:topRightRadius="10dp"/>
</shape>
</item>
<item
android:top="30dp"
>
<shape android:shape="rectangle">
<size
android:width="100dp"
android:height="40dp"/>
<solid android:color="@color/colorPrimary"/>
<corners android:radius="0dp"/>
</shape>
</item>
</layer-list>
如果这是您想要实现的布局,请告诉我结果。 希望有帮助
使用图层列表
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Apply the margin value on the "item" element -->
<!-- This example creates a 15dp visible margin around the dialog -->
<item
android:top="15dp"
android:bottom="15dp"
android:left="15dp"
android:right="15dp">
<shape
android:shape="rectangle">
<!-- Add attributes specific to your background (e.g. corner radius, colors, etc.) -->
<!-- Set "padding" at minimum to match margin and add additional content padding as well, if desired -->
<!-- This example creates 10dp of internal padding for content -->
<padding
android:top="25dp"
android:bottom="25dp"
android:left="25dp"
android:right="25dp" />
</shape>
</item>
</layer-list>
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