如何在android中为3个方面创建一个笔画？

I am using a stroke to make a colored border to a shape in xml layout in android .

我正在使用笔划在android中的xml布局中为彩色边框制作一个形状。

Can I make the stroke for only 3 edges ( left,top,bottom) the right NO ?

我只能将3个边缘(左边,顶部,底部)的笔划设为正确的NO吗?

4 个解决方案

#1

You can achieve this by using a layerlist and messing with the padding. You'll need 3 elements:

您可以通过使用图层列表并弄乱填充来实现此目的。你需要3个元素:

1: A border.xml shape, which is just a solid shape in the color of your border: border.xml

1:border.xml形状,它只是边框颜色的实心形状:border.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#ff0000"/>
</shape>

2: The 'inner' shape, the shape where you want the border to appear around: inner.xml

2:“内部”形状,您希望边框出现的形状:inner.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#00ff00"/>
</shape>

3: A layer list, which will put these 2 on top of eachother. You create the border by setting the padding on the inner shape: layerlist.xml

3:一个图层列表,它将这两个放在彼此之上。您可以通过在内部形状上设置填充来创建边框:layerlist.xml

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/border"/>
<item android:drawable="@drawable/inner"
    android:top="3dp" android:right="0dp" android:bottom="3dp"
    android:left="3dp" />
</layer-list>

#2

Another approach would be to use a 9-Patch png file for your background. You do this by taking a normal png file and then using a tool like this to define:

另一种方法是使用9-Patch png文件作为背景。你可以通过一个普通的png文件,然后使用这样的工具来定义:

The area where your content goes in the png.

您的内容在png中的区域。

The area of your png that stretches as the underlying control grows in either width or height.

当底层控件在宽度或高度上增长时,png的区域会拉伸。

Once you generate the 9-patch png file, add it to your drawables (define files for various resolutions). Then just set the drawable as your control background.

生成9-patch png文件后,将其添加到drawables(定义各种分辨率的文件)。然后将drawable设置为您的控件背景。

android:background="@drawable/my9_patch_file_name"

#3

Here's my solution, which works if you want transparent or semi-transparent background colors.

这是我的解决方案,如果您想要透明或半透明背景颜色,则可以使用。

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <inset xmlns:android="http://schemas.android.com/apk/res/android"
            android:insetLeft="-1dp"
            >
        <shape xmlns:android="http://schemas.android.com/apk/res/android">
            <stroke
                android:color="#c45b5b5b"
                android:width="1dp"/>
            <corners
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="5dp"
                android:topLeftRadius="0dp"
                android:topRightRadius="5dp"
                />
        </shape>
        </inset>
    </item>
    <item
        android:top="1dp"
        android:right="1dp"
        android:bottom="1dp"
        android:left="0dp">
        <shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/infoBox_Background"/>
            <corners
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="5dp"
                android:topLeftRadius="0dp"
                android:topRightRadius="5dp"
                />
        </shape>
    </item>
</layer-list>

#4

Using @Mopper answer, you can like that too.

使用@Mopper答案,你也可以这样。

<?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape> <solid android:color="#ff0000" /> </shape> </item> <item android:bottom="3dp" android:left="3dp" android:right="0dp" android:top="3dp"> <shape> <solid android:color="#00ff00" /> </shape> </item> </layer-list>

<实体android:color =“#ff0000” />

#1