Android：具有两种背景颜色的按钮 [英] Android: button with two background colors

问题描述

我想在Android上使用两种背景颜色制作按钮样式，例如以下图片：

http://i.stack.imgur.com/ExKXl.png

它可以用可绘制资源？我正在寻找 http://developer.android上的解决方案。 com / guide / topics / resources / drawable-resource.html ，但是它们都不能有两种颜色。

有办法吗？

解决方案是创建一个< layer-list& / code>与项目和每个< item> 有一个< shape> 。代码是下面的（整个按钮有32dp高度，所以我为每种颜色使用半高）：

 <？xml version =1.0encoding =utf-8？> 
< layer-list xmlns：android =http://schemas.android.com/apk/res/android> 
 
<！ - 顶部颜色 - > 
< item android：bottom =16dp> 
< shape android：shape =rectangle> 
< solid android：color =＃FF0000/> <！ -  RED  - > 
< / shape> 
< / item> 
 
<！ - 底部颜色 - > 
< item android：top =16dp> 
< shape android：shape =rectangle> 
< solid android：color =＃00FF00/> <！ -  GREEN  - > 
< / shape> 
< / item> 
< / layer-list> 
  

但我有另一个问题，我试图把角放在每个形状。我试图把 android：topLeftRadius 和 android：topRightRadius 在第一个形状和 android： bottomLeftRadius 和 android：bottomRightRadius 在第二个形状，但它没有显示我的角落！所以解决方案是使用 android：radius （所有的8个角落变得圆润，损坏！）和另外两个项目，以克服额外的角落。最后XML有这样的：

 <？xml version =1.0encoding =utf-8？ > 
< layer-list xmlns：android =http://schemas.android.com/apk/res/android> 
 
<！ - 顶部颜色带角 - > 
< item android：bottom =16dp> 
< shape android：shape =rectangle> 
< corners android：radius =5dp/> <！ - 这是强制性的，它不工作只与android：topLeftRadius和android：topRightRadius  - > 
< solid android：color =＃FF0000/> <！ -  RED Color  - > 
< / shape> 
< / item> 
 
<！ - 离开中心角 - > 
< item android：top =8dpandroid：bottom =8dp> 
< shape android：shape =rectangle> 
< solid android：color =＃FF0000/> <！ -  RED Color  - > 
< / shape> 
< / item> 
 
<！ - 底部颜色带角 - > 
< item android：top =16dp> 
< shape android：shape =rectangle> 
< corners android：radius =5dp/> <！ - 这是强制性的，它不工作只与android：bottomLeftRadius和android：bottomRightRadius  - > 
< solid android：color =＃00FF00/> <！ -  GREEN Color  - > 
< / shape> 
< / item> 
 
<！ - 离开中心角 - > 
< item android：top =16dpandroid：bottom =8dp> 
< shape android：shape =rectangle> 
< solid android：color =＃00FF00/> <！ -  GREEN Color  - > 
< / shape> 
< / item> 
 
< / layer-list> 
  
 
 
 
现在正在工作，谢谢大家！
解决方案
可能重复：带状背景有两种颜色？ 
 
 
 
其中使用Java提供的答案：
  Bitmap bmResult = Bitmap.createBitmap（buttonWidth，buttonHeight，Bitmap.Config.ARGB_8888）; 
 Canvas canvas = new Canvas（bmResult）; 
 paint paint = new Paint（）; 
 paint.setShader（new LinearGradient（0，0，0，bmResult.getHeight（）/ 2，0xFF284560，0xFF284060，TileMode.MIRROR））; 
 canvas.drawPaint（paint）; 
 paint.setShader（new LinearGradient（0，0，0，bmResult.getHeight（）/ 2，0x55​​FFFFFF，0x22FFFFFF，TileMode.CLAMP））; 
 paint.setMaskFilter（new BlurMaskFilter（3，BlurMaskFilter.Blur.NORMAL））; 
 canvas.drawRect（0，0，bmResult.getWidth（），bmResult.getHeight（）/ 2，paint）
  
已从同一主题的另一个SO帖子中移除：渐变和阴影按钮 
 
 
 
接受的解决方案使用XML drawable：
 < layer-list xmlns：android =http://schemas.android.com/apk/res/android> 
< item android：bottom =20dp> 
< shape android：shape =rectangle> 
< size android：height =20dp/> 
< solid android：color =＃ff0000/> 
< / shape> 
< / item> 
 
< item android：top =20dp> 
< shape android：shape =rectangle> 
< size android：height =20dp/> 
< solid android：color =＃0000ff/> 
< / shape> 
< / item> 
< / layer-list> 
  
正如其他人所说：
 
 
 
您可以创建最多的 9patch图片足智多谋。
 
I want to make a button style on Android with two background colors, such as the following image:

http://i.stack.imgur.com/ExKXl.png

Is it possible to make with drawable resources? I´ve being searching for a solution on http://developer.android.com/guide/topics/resources/drawable-resource.html but none of them can have two colors.

Is there a way?

[editing the answer]

The solution was to create a <layer-list> with items and each <item> has one <shape>. The code is bellow (the entire button has 32dp height so I used half-height for each color):
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <!-- Top color -->
    <item android:bottom="16dp">
        <shape android:shape="rectangle">
            <solid android:color="#FF0000" /> <!-- RED -->
        </shape>
    </item>

    <!-- Bottom color -->
    <item android:top="16dp">
        <shape android:shape="rectangle">
            <solid android:color="#00FF00" /> <!-- GREEN -->
        </shape>
    </item>
</layer-list>
But I had another issue, I was trying to put corners on each shape. I tried to put android:topLeftRadius and android:topRightRadius on the first shape and android:bottomLeftRadius and android:bottomRightRadius on the second shape but it didn´t show me the corners! So the solution was to use android:radius (all the 8 corners became rounded, dammit!) and put another two items to overcome the extra corners. At the end the XML has like that:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <!-- Top color with corner -->
    <item android:bottom="16dp">
        <shape android:shape="rectangle">
            <corners android:radius="5dp" /> <!-- It´s obligatory, It didn´t work only with android:topLeftRadius and android:topRightRadius -->
            <solid android:color="#FF0000" /> <!-- RED Color-->
        </shape>
    </item>

    <!-- Takes off the center corner -->
    <item android:top="8dp" android:bottom="8dp">
        <shape android:shape="rectangle">
            <solid android:color="#FF0000" /> <!-- RED Color-->
        </shape>
    </item>

    <!-- Bottom color with corner -->
    <item android:top="16dp">
        <shape android:shape="rectangle">
            <corners android:radius="5dp" /> <!-- It´s obligatory, It didn´t work only with android:bottomLeftRadius and android:bottomRightRadius -->
            <solid android:color="#00FF00" /> <!--  GREEN Color -->
        </shape>
    </item>

    <!-- Takes off the center corner -->
    <item android:top="16dp" android:bottom="8dp">
        <shape android:shape="rectangle">
            <solid android:color="#00FF00" /> <!--  GREEN Color -->
        </shape>
    </item>

</layer-list>
It is working now, thanks you all!
解决方案
Possible Duplicate: banded background with two colors?

In which a provided answer using Java:
Bitmap bmResult = Bitmap.createBitmap(buttonWidth, buttonHeight, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bmResult); 
    Paint paint = new Paint();
    paint.setShader(new LinearGradient (0, 0, 0, bmResult.getHeight()/2, 0xFF284560, 0xFF284060, TileMode.MIRROR));
    canvas.drawPaint(paint);
    paint.setShader(new LinearGradient (0, 0, 0, bmResult.getHeight()/2, 0x55FFFFFF, 0x22FFFFFF, TileMode.CLAMP));
    paint.setMaskFilter(new BlurMaskFilter(3, BlurMaskFilter.Blur.NORMAL));
    canvas.drawRect(0, 0, bmResult.getWidth(), bmResult.getHeight()/2, paint)
was lifted from another SO post on the same topic: Gradients and shadows on buttons

And the accepted solution using an XML drawable:
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:bottom="20dp">
        <shape android:shape="rectangle" >
            <size android:height="20dp" />
            <solid android:color="#ff0000" />
        </shape>
    </item>

    <item android:top="20dp">
        <shape android:shape="rectangle" >
            <size android:height="20dp" />
            <solid android:color="#0000ff" />
        </shape>
    </item>
</layer-list>
And as others have said: 

You can create a 9patch image which would be the most resourceful.

                        
这篇关于Android：具有两种背景颜色的按钮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！