Java 颜色值可绘制资源问题
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color value drawable resource issue
提问by ez4nick
I have an image that is 1900*1200 in a folder called drawable-sw600dp that id like to have used on a nexus 7. When I try to run the app the main activity the screen is white and I get the following error:
我在一个名为 drawable-sw600dp 的文件夹中有一个 1900*1200 的图像，我喜欢在 nexus 7 上使用它。当我尝试运行应用程序时，主活动屏幕是白色的，我收到以下错误：
java.lang.NumberFormatException: Color value '@drawable-sw600dp/background5' must start with #
at com.android.layoutlib.bridge.impl.ResourceHelper.getColor(ResourceHelper.java:71)
at com.android.layoutlib.bridge.impl.ResourceHelper.getDrawable(ResourceHelper.java:248)
at android.content.res.BridgeTypedArray.getDrawable(BridgeTypedArray.java:782)
Could it be that the image is too large to use? Or what could cause this error to happen?
会不会是图片太大无法使用？或者什么可能导致此错误发生？
This is in my activity_main.xml where the background is set:
这是在我的 activity_main.xml 中设置了背景：
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background5"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:id="@+id/MainLayout"
tools:context=".MainActivity">
In my other folders drawable-hdpi,-mdpi there is no problem. However I made the .jpg image a higher resolution and now it creates this error, thats why I suspect the high resolution is causing the issue.
在我的其他文件夹 drawable-hdpi,-mdpi 中没有问题。但是，我使 .jpg 图像的分辨率更高，现在它产生了这个错误，这就是为什么我怀疑高分辨率是导致问题的原因。
回答by gahfy
As mentioned by android docjpg is not supported. Use png instead:
正如android doc所述，不支持 jpg。使用 png 代替：
A drawable to use as the background. This can be either a reference to a full drawable resource (such as a PNG image, 9-patch, XML state list description, etc), or a solid color such as "#ff000000" (black).
用作背景的可绘制对象。这可以是对完整可绘制资源（例如 PNG 图像、9-patch、XML 状态列表描述等）的引用，也可以是纯色，例如“#ff000000”（黑色）。
回答by Drew MacLean
Remove the '-' in the file name.
删除文件名中的“-”。
NOTE: '-' is not a valid file-based resource name character: File-based resource names must contain only lowercase a-z, 0-9, or underscore
注意：“-”不是有效的基于文件的资源名称字符：基于文件的资源名称必须仅包含小写字母 az、0-9 或下划线
回答by Drew MacLean
Some people have mentioned restarting Eclipse has worked, but that didn't work for me.
有些人提到重新启动 Eclipse 有效，但这对我不起作用。
Instead, I found that I had to simply rename the image file so that it did NOT start with a number. All icons in the Android Developer Icon Pack start with a number, and I had just copied the one over. It appears that if the file starts with a number, it is assumed to be the start of a hexadecimal color value, and hence looks for the # symbol.
相反，我发现我必须简单地重命名图像文件，使其不以数字开头。Android Developer Icon Pack 中的所有图标都以数字开头，我刚刚复制了一个。看来，如果文件以数字开头，则假定它是十六进制颜色值的开头，因此会查找 # 符号。
working with: Eclipse Juno 3.7.2, Android SDK 21.1
使用：Eclipse Juno 3.7.2，Android SDK 21.1
