如何通过xml为自定义视图传递重力属性?

问题描述

我试图弄清楚如何通过xml通过android:gravity获得自定义视图.

I'm trying to figure out how to pass android:gravity via xml for a custom view.

此处发布的解决方案( https://stackoverflow.com/a/3441986/413254 )表示要添加android:gravity归于其他attr的属性.

The solution posted here (https://stackoverflow.com/a/3441986/413254) says to add the android:gravity attribute to the other attr's.

执行此操作时，我会收到警告:

When I do this, I end up with a warning saying:

错误:属性"android:gravity"已经定义 错误:任务':app:processStagingDebugResources'的执行失败.

Error:Attribute "android:gravity" has already been defined Error:Execution failed for task ':app:processStagingDebugResources'.

我的colors.xml文件?

My colors.xml file?

values.xml的第165行是

Line 165 of values.xml is

<declare-styleable name="StackedTextView">
    <attr format="integer" name="android:gravity"/>
    <attr format="string" name="line1"/>
    <attr format="string" name="line2"/>
    <attr format="dimension" name="line1_textSize"/>
    <attr format="dimension" name="line2_textSize"/>
</declare-styleable>

在多个组中多次出现android:gravity.主题，FlowLayout(我包括的库)，LinearLayoutCompat等.

There are multiple occurrences of android:gravity in multiple groups. Theme, FlowLayout (library I include), LinearLayoutCompat, etc.

更新了错误消息.

推荐答案

编写如下:

<attr format="integer" name="android:gravity"/>

您要引入具有整数格式的新属性android:gravity，当然，系统中已经定义了android:gravity，因此您需要将其更改为:

you are intruducing the new attribute android:gravity with integer format, of course android:gravity is already defined in the system, so you need to change it into:

<attr name="android:gravity"/>

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