禁用时,Android 文本视图颜色不会改变
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Android text view color doesn't change when disabled
提问by Jeremy Logan
When I call setEnabled(false)
for a TextView
object the text color doesn't change. I expected it will be changed to gray. If I remove the line of android:textColor
in my XML file, it backs to normal.
当我调用setEnabled(false)
一个TextView
对象时,文本颜色不会改变。我预计它会变成灰色。如果我删除android:textColor
XML 文件中的行,它会恢复正常。
Any ideas ?
有任何想法吗 ?
回答by Jeremy Logan
I think what's happening is that since you're overriding the default textcolor it isn't inheriting the other textcolor styles. Try creating a ColorStateListfor it and setting the textColor attribute to it instead of to a color.
我认为正在发生的事情是,由于您覆盖了默认的 textcolor,因此它不会继承其他 textcolor 样式。尝试为它创建一个ColorStateList并将 textColor 属性设置为它而不是颜色。
In a color file (eg res/color/example.xml):
在颜色文件(例如 res/color/example.xml)中:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false" android:color="@color/disabled_color" />
<item android:color="@color/normal_color"/>
</selector>
then in your layout:
然后在您的布局中:
<TextView
android:text="whatever text you want"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/example" />
Note, I haven't done this in a while and I'm typing a lot of this from memory, so it may need a little tweaking. The ColorStateList docs (linked above) have a more fleshed-out example for the color XML file.
请注意,我已经有一段时间没有这样做了,而且我从记忆中输入了很多内容,因此可能需要进行一些调整。ColorStateList 文档(上面链接)有一个更丰富的颜色 XML 文件示例。