android colors中无法找到和定义颜色

Question

#7fa87f
@android:color/black
@android:color/black
此处报错 @android:color/gray
此处报错 @android:color/orange
@android:color/white
@android:color/black

在colors.xml文件中定义的
错误原因显示：Error: No resource found that matches the given name (at 'gray' with value '@android:color/gray')
我想在drawable中新建两个xml文件代码如下：
<?xml version="1.0" encoding="utf-8"?>


android:color="@color/gray"/>

如果用白色或黑色都不报错为什么？
<?xml version="1.0" encoding="utf-8"?>
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
android:color="@android:color/orange"/>

Answer 1

自己在colors文件里面加入颜色啊
<?xml version="1.0" encoding="utf-8"?>

<color name="white">#ffffffff</color>
<color name="orange_1">#F05826</color>
<color name="orange">#ff7735</color>
<color name="blue">#57bef8</color>
<color name="blue_select">#00ccff</color>