边框在 Android 上被忽略 - Xamarin.Forms [英] Border being ignored on Android - Xamarin.Forms
问题描述
我正在尝试使用 Xamarin.Forms 构建一个带有绿色边框的圆形按钮,使用的方法我在以前的项目中使用过,方法是向 Button 元素添加 BorderRadius、BorderColour 等值.
I am attempting to build a circular button with a green border using Xamarin.Forms, using a method that I have used on previous projects by adding a BorderRadius, BorderColour etc values to the Button element.
请考虑以下代码:
Button goButton = new Button
{
Text = "GO!",
TextColor = Color.White,
FontSize = 75,
HeightRequest = 200,
WidthRequest = 200,
BorderRadius = 100,
BorderWidth = 10,
BorderColor = Color.Green,
BackgroundColor = Color.Red
};
上面的代码给了我以下不想要的输出:
The above code gives me the following, undesired output:
我尝试在 XAML 中重写并遇到了同样的问题,我还检查了我的 Xamarin(和 NuGet Xamarin.forms 包)版本是否是最新的.然而,在 iOS 版本上,一切看起来都是正确的(我认为这是第一次!)
I have tried re-writing in XAML and had the same issue, I have also checked that my version of Xamarin (and NuGet Xamarin.forms packages) are up to date. However on the iOS version, everything looks correct (first time for everything I suppose!)
在发现问题和解决此问题方面的任何帮助将不胜感激.
Any assistance in finding the problem and fixing this issue would be greatly appreciated.
建议修改:
请在下面找到我的styles.xml
Please find below my styles.xml
<?xml version="1.0" encoding="utf-8" ?>
<resources>
<style name="MainTheme" parent="MainTheme.Base">
</style>
<!-- Base theme applied no matter what API -->
<style name="MainTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
<!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
<item name="windowNoTitle">true</item>
<!--We will be using the toolbar so no need to show ActionBar-->
<item name="windowActionBar">false</item>
<!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette -->
<!-- colorPrimary is used for the default action bar background -->
<item name="colorPrimary">#2196F3</item>
<!-- colorPrimaryDark is used for the status bar -->
<item name="colorPrimaryDark">#1976D2</item>
<!-- colorAccent is used as the default value for colorControlActivated
which is used to tint widgets -->
<item name="colorAccent">#FF4081</item>
<!-- You can also set colorControlNormal, colorControlActivated
colorControlHighlight and colorSwitchThumbNormal. -->
<item name="windowActionModeOverlay">true</item>
<item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>
</style>
<style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
<item name="colorAccent">#FF4081</item>
</style>
</resources>
推荐答案
Bordered Button
s 对我来说很好用...也许可以尝试一些更合理的值:
Bordered Button
s work fine for me... maybe try some more reasonable values:
Button button = new Button {
BorderWidth = 1,
BorderColor = Color.Green,
BackgroundColor = Color.Transparent,
Text = "GO!",
TextColor = Color.White,
}
这就是我的 Button
中的所有内容,边框显示正常.想知道 BackgroundColor = Color.Transparent
是否会对您有所帮助.
That is all I have in my Button
s and the border shows up ok. Wondering if the BackgroundColor = Color.Transparent
will make a difference for you.
*添加评论作为答案.根据 this 帖子,为 Button
添加一个完全空的自定义渲染器可能会有所帮助:>
* Adding comment as answer. According to this post, adding a completely empty custom renderer for the Button
may help:
[assembly: ExportRenderer(typeof(Xamarin.Forms.Button), typeof(GenericButtonRenderer))]
namespace Express.CustomRenderers {
public class GenericButtonRenderer : Xamarin.Forms.Platform.Android.ButtonRenderer { }
}
这篇关于边框在 Android 上被忽略 - Xamarin.Forms的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!