选择器不适用于Android中的Mipmap图像 [英] Selector does not work with mipmap image in android

问题描述

我想要的是一个imagebutton，当用户按下该按钮时，该按钮会更改为另一个图像。以下是我的目录列表。如您所见，我没有drawable-hdpi，drawable-mdpi ..等。而且我也看不到mipmap-hdpi，mipmap-mdpi ..等。我的问题是我无法为我的imagebutton添加选择器xml。
目录列表
下图是我的content_main文件，即activity_main。
content_main。

我的程序显示了按钮，但是当我在content_main中添加android：background = @ drawable / fbpressed代码段时，程序将失败。它说不幸的是Login2已经停止！

All I want is that an imagebutton which changes to another image when user press the button on. Following is my directory list. As you see I don't have drawable-hdpi, drawable-mdpi ..and others. And also I can't see mipmap-hdpi, mipmap-mdpi ..and others. My problem is I can't add selector xml for my imagebutton. directory list Following image is my content_main file which known as activity_main. content_main.
My program shows the image of button but when I add android:background="@drawable/fbpressed" code piece in content_main, the program fails. it says unfortunately Login2 has stopped!

我为选择器文件fbpress.xml尝试了很多组合。就像我尝试了android：icon = @ mipmap / facebook_pressed一样，但是一次又一次失败。知道吗？

I tried lots of combination for my selector file which is fbpress.xml. like I tried android:icon="@mipmap/facebook_pressed" but it fails again and again. any idea?

推荐答案

是的，我已经解决了这个问题。如果将资源文件添加到按钮中，我不知道应该更改我的values / styles.xml文件。 （这是fbpress.xml）

Yes guys I've solved the problem. I did not know that i should change my values/styles.xml file if i add an resource file into my button. (which is fbpress.xml)

我也将文件夹表示形式从Android样式更改为Project样式，以便可以看到我的mipmap-hdpi，mdpi等。

Also I changed my folder representation from Android style to Project style so that i can see my mipmap-hdpi, mdpi etc.

从android更改为项目
我将这些行添加到我的styles.xml中。 fbpress是我的资源文件，它是选择器文件。

change from android to project I add those lines into my styles.xml. fbpress is my resource file which is selector file.

<style name="fbpressed" parent="@android:style/Widget.Button">
    <item name="android:background">@drawable/fbpressed</item>
</style>

以下是我的content_main.xml部分。我在此文件中添加了android：background = @ drawable：fbpressed和style = @ style / fbpressed行。
imageButton
最后，我的按钮有效=）感谢所有人您的帮助

Following is my part of content_main.xml. I added android:background="@drawable:fbpressed" and style="@style/fbpressed" lines into this file. imageButton And finally my button works =) Thanks for all your helps

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