如何在Android中使用xml创建具有左右边框的向下箭头指示器

我想把我的观点做成这样的形状

有没有办法用xml做到这一点？

---

谢谢

这是您的自定义绘图

自定义形状向下箭头.xml

：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- Background -->
    <item>
        <shape android:shape="rectangle">
            <size
                android:width="250dp"
                android:height="20dp" />
            <solid android:color="#cdcdcd" />
        </shape>
    </item>

    <!-- Top-Left Line -->
    <item
        android:right="150dp"
        android:bottom="18.7dp">
        <shape android:shape="line">
            <stroke
                android:color="#999999"
                android:width="1dp" />
        </shape>
    </item>

    <!-- Top-Right Line -->
    <item
        android:left="150dp"
        android:bottom="18.7dp">
        <shape android:shape="line">
            <stroke
                android:color="#999999"
                android:width="1dp" />
        </shape>
    </item>

    <!-- Left-Diagonal Line -->
    <item
        android:right="25dp">
        <rotate android:fromDegrees="36">
            <shape android:shape="line">
                <stroke
                    android:color="#999999"
                    android:width="1dp" />
            </shape>
        </rotate>
    </item>

    <!-- Right-Diagonal Line -->
    <item
        android:left="27dp">
        <rotate android:fromDegrees="322">
            <shape android:shape="line">
                <stroke
                    android:color="#999999"
                    android:width="1dp" />
            </shape>
        </rotate>
    </item>

</layer-list>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="24dp"
    android:gravity="center_horizontal">

    <!-- Custom shape -->
    <LinearLayout
        android:id="@+id/layout_custom_shape"
        android:layout_width="wrap_content"
        android:layout_height="60dp"
        android:paddingTop="10dp"
        android:background="#cdcdcd">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@drawable/custom_shape_down_arrow">

        </LinearLayout>
    </LinearLayout>

</LinearLayout>

使用：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- Background -->
    <item>
        <shape android:shape="rectangle">
            <size
                android:width="250dp"
                android:height="20dp" />
            <solid android:color="#cdcdcd" />
        </shape>
    </item>

    <!-- Top-Left Line -->
    <item
        android:right="150dp"
        android:bottom="18.7dp">
        <shape android:shape="line">
            <stroke
                android:color="#999999"
                android:width="1dp" />
        </shape>
    </item>

    <!-- Top-Right Line -->
    <item
        android:left="150dp"
        android:bottom="18.7dp">
        <shape android:shape="line">
            <stroke
                android:color="#999999"
                android:width="1dp" />
        </shape>
    </item>

    <!-- Left-Diagonal Line -->
    <item
        android:right="25dp">
        <rotate android:fromDegrees="36">
            <shape android:shape="line">
                <stroke
                    android:color="#999999"
                    android:width="1dp" />
            </shape>
        </rotate>
    </item>

    <!-- Right-Diagonal Line -->
    <item
        android:left="27dp">
        <rotate android:fromDegrees="322">
            <shape android:shape="line">
                <stroke
                    android:color="#999999"
                    android:width="1dp" />
            </shape>
        </rotate>
    </item>

</layer-list>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="24dp"
    android:gravity="center_horizontal">

    <!-- Custom shape -->
    <LinearLayout
        android:id="@+id/layout_custom_shape"
        android:layout_width="wrap_content"
        android:layout_height="60dp"
        android:paddingTop="10dp"
        android:background="#cdcdcd">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@drawable/custom_shape_down_arrow">

        </LinearLayout>
    </LinearLayout>

</LinearLayout>

输出：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- Background -->
    <item>
        <shape android:shape="rectangle">
            <size
                android:width="250dp"
                android:height="20dp" />
            <solid android:color="#cdcdcd" />
        </shape>
    </item>

    <!-- Top-Left Line -->
    <item
        android:right="150dp"
        android:bottom="18.7dp">
        <shape android:shape="line">
            <stroke
                android:color="#999999"
                android:width="1dp" />
        </shape>
    </item>

    <!-- Top-Right Line -->
    <item
        android:left="150dp"
        android:bottom="18.7dp">
        <shape android:shape="line">
            <stroke
                android:color="#999999"
                android:width="1dp" />
        </shape>
    </item>

    <!-- Left-Diagonal Line -->
    <item
        android:right="25dp">
        <rotate android:fromDegrees="36">
            <shape android:shape="line">
                <stroke
                    android:color="#999999"
                    android:width="1dp" />
            </shape>
        </rotate>
    </item>

    <!-- Right-Diagonal Line -->
    <item
        android:left="27dp">
        <rotate android:fromDegrees="322">
            <shape android:shape="line">
                <stroke
                    android:color="#999999"
                    android:width="1dp" />
            </shape>
        </rotate>
    </item>

</layer-list>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="24dp"
    android:gravity="center_horizontal">

    <!-- Custom shape -->
    <LinearLayout
        android:id="@+id/layout_custom_shape"
        android:layout_width="wrap_content"
        android:layout_height="60dp"
        android:paddingTop="10dp"
        android:background="#cdcdcd">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@drawable/custom_shape_down_arrow">

        </LinearLayout>
    </LinearLayout>

</LinearLayout>

---

希望这将有助于~

您需要它的目的是什么？您可以尝试使用“九块补丁”图像背景。我想创建一个带有“视图寻呼机”的滑块，所选选项卡将指示另一个视图。向下箭头将指示启用的视图，该行的其余部分将分布在禁用的视图上，并希望使用xml创建。我认为此链接将帮助您：-谢谢，但我的情况完全不同。我只需要使用xml绘制一个带有上边框的向下箭头。然后我就可以完成剩下的任务了。很高兴知道这一点。如果我的答案似乎有用，那么请投赞成票。非常感谢。