使用平板电脑时，xml背景不会改变

I have an xml that declare the button background:

我有一个声明按钮背景的xml：

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:drawable="@color/selector_pressed" />
    <item android:state_focused="true" android:drawable="@color/selector_focused" />
    <item android:drawable="@android:color/transparent" />
</selector>

On my phone Samsung Nexus S (android 4.0.3) , this xml work perfectly, when i press the view the background color change. But I got a problem on tablets (Samsung Galaxy tab, Android 3.2), the button is clicked but i don't see any changes for the backgroung. The background color never change for tablets.

在我的手机三星Nexus S（Android 4.0.3），这个xml工作完美，当我按下视图背景颜色改变。但我在平板电脑上遇到了问题（三星Galaxy标签，Android 3.2），单击按钮但我没有看到背景的任何变化。平板电脑的背景颜色永远不会改变。

Any one have an idea why this happening only for tablets? and how can i fix this?

任何人都知道为什么这只发生在平板电脑上？我该如何解决这个问题？

3 个解决方案

#1

I've had the same problem but I've managed to solve this: the actual problem lies in a defect in android 3.2 regarding hardware acceleration so if you put in your AndroidManifest that your application is hardwareAccelerated="true" your problem will be solved.

我遇到了同样的问题，但我设法解决了这个问题：实际问题在于android 3.2中关于硬件加速的缺陷，所以如果你在AndroidManifest中放入你的应用程序是hardwareAccelerated =“true”你的问题将会解决。

#2

I would suggest you to adjust your layout on each layout folder

我建议你调整每个布局文件夹的布局

layout
布局
layout-800x480
布局为800x480
layout-land
布局土地
etc. refer here http://developer.android.com/guide/practices/screens_support.html
请参阅http://developer.android.com/guide/practices/screens_support.html

and call your xml on each layout. It could be that when it was clicked in tablet, it was not displayed properly, I once experienced that issue too because the dimension or the resolution did not match, so the color is not displaying properly as well.

并在每个布局上调用您的xml。可能是当它在平板电脑中被点击时，它没有正确显示，我曾经遇到过这个问题，因为尺寸或分辨率不匹配，所以颜色也没有正确显示。

#3

try getting rid of the

试着摆脱

<item android:state_focused="true" android:drawable="@color/selector_focused" />

could just be the way that version of OS intercepts pressed and focused. just a guess tho, didn't really test it.

可能就是那个版本的操作系统拦截压力和集中的方式。只是一个猜测，没有真正测试它。

Try changing your .xml to:

尝试将.xml更改为：

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" >
        <shape>         
            <solid
                android:color="#11223344" />
        </shape>
    </item>
    <item>
        <shape>
           <solid
               android:color="#AABBCCDD" />
        </shape>
    </item>
</selector>

of coures you can set your color to anything you'd like. That is if you are using static colors. you could add gradients and rounded edges and a border to this too.

你可以根据自己的喜好设置颜色。那就是你使用静态颜色。你也可以添加渐变和圆角边框。

#1

#2