Android 如何在带有图像下划线的微调器中设置下拉箭头 列表项

我的代码就是这个样式

这在style.xml中

<style name="SpinnerTheme">
        <item name="android:background" >@drawable/bg_spinner</item>
    </style>

@可拉拔/bg_旋扣器

bg_spinner.xml

日期、月份和年份是全宽的，背景图像的宽度也较小，但当涉及性时，它不会显示全宽。

---

我需要下一行的全宽，请按要求将xml代码替换为以下代码：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:shape="rectangle">
        <!-- Draw a 2dp width border around shape -->
        <stroke
            android:color="#000000"
            android:width="2dp"
            />
    </shape>
</item>
<!-- Overlap the left, top and right border using background color  -->
<item
    android:bottom="2dp"
    >
    <shape android:shape="rectangle">
        <solid android:color="#ffffff"/>
    </shape>
</item>

---

您可以通过xml代码来划线。如下

    <item >

    <layer-list>

        <item>
            <shape android:shape="rectangle" >
                <solid android:color="@android:color/transparent" />
                <!-- background color of box -->
            </shape>
        </item>
        <item
            android:left="-2dp"
            android:right="-2dp"
            android:top="-2dp">
            <shape>
                <solid android:color="@android:color/transparent" />

                <stroke
                    android:width="1dp"
                    android:color="#323232" />
                <!-- color of stroke -->
            </shape>
        </item>

        <item android:right="5dp">
            <bitmap android:gravity="center_vertical|right" android:src="@drawable/downlarrow" />

        </item>

    </layer-list>

   </item>

输出如下所示

---

将您的xml张贴到喷丝头上，并用它编辑您的问题。如果在注释部分添加它，则无法读取删除位图标记。对于edittext也可以正常工作。如果文本有两行，则会被底线重叠。

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:shape="rectangle">
        <!-- Draw a 2dp width border around shape -->
        <stroke
            android:color="#000000"
            android:width="2dp"
            />
    </shape>
</item>
<!-- Overlap the left, top and right border using background color  -->
<item
    android:bottom="2dp"
    >
    <shape android:shape="rectangle">
        <solid android:color="#ffffff"/>
    </shape>
</item>

    <item >

    <layer-list>

        <item>
            <shape android:shape="rectangle" >
                <solid android:color="@android:color/transparent" />
                <!-- background color of box -->
            </shape>
        </item>
        <item
            android:left="-2dp"
            android:right="-2dp"
            android:top="-2dp">
            <shape>
                <solid android:color="@android:color/transparent" />

                <stroke
                    android:width="1dp"
                    android:color="#323232" />
                <!-- color of stroke -->
            </shape>
        </item>

        <item android:right="5dp">
            <bitmap android:gravity="center_vertical|right" android:src="@drawable/downlarrow" />

        </item>

    </layer-list>

   </item>