blocks|key|2976645|text|这个问题是由我的xml文件引起的。我的渐变XML文件在values文件夹中，我通过将渐变文件移动到drawable文件夹解决了这个问题|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2976646|entityMap^0|R|6|1D|8|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

This problem was caused by my xml file. My gradient XML file was in the <code>values</code> folder, I solved this problem by moving gradient file to <code>drawable</code> folder

blocks|key|2976691|text|你可以直接点击鼠标右键|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2976692|2976693|+res|blockquote|2976694|2976695|2976696|并命中|2976697|2976698|新闻|2976699|2976700|2976701|，创建一个|2976702|2976703|安卓资源文件|2976704|2976705|2976706|，然后选择|2976707|2976708|资源类型|2976709|2976710|2976711|成为|2976712|可绘制的|2976713|2976714|2976715|2976716|，并更改默认的|2976717|2976718|根元素|2976719|2976720|2976721|至|2976722|2976723|形状|2976724|2976725|2976726|是的，在Android+Studio中创建一个新的XML文件而不是布局和值是有一点buggy的，哈哈。|2976727|希望它能帮助你！！|2976728|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1U|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1V|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|1W|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|1X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|E|7|20|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|21|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|22|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|23|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|24|8|@]|9|@]|A|$]]|$1|R|3|S|5|E|7|25|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|26|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|27|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|28|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|29|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|E|7|2A|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|2B|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|2C|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|2D|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|2E|8|@]|9|@]|A|$]]|$1|16|3|-4|5|E|7|2F|8|@]|9|@]|A|$]]|$1|17|3|-4|5|6|7|2G|8|@]|9|@]|A|$]]|$1|18|3|-4|5|6|7|2H|8|@]|9|@]|A|$]]|$1|19|3|1A|5|6|7|2I|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|2J|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|E|7|2K|8|@]|9|@]|A|$]]|$1|1E|3|-4|5|6|7|2L|8|@]|9|@]|A|$]]|$1|1F|3|-4|5|6|7|2M|8|@]|9|@]|A|$]]|$1|1G|3|1H|5|6|7|2N|8|@]|9|@]|A|$]]|$1|1I|3|-4|5|6|7|2O|8|@]|9|@]|A|$]]|$1|1J|3|1K|5|E|7|2P|8|@]|9|@]|A|$]]|$1|1L|3|-4|5|6|7|2Q|8|@]|9|@]|A|$]]|$1|1M|3|-4|5|6|7|2R|8|@]|9|@]|A|$]]|$1|1N|3|1O|5|6|7|2S|8|@]|9|@]|A|$]]|$1|1P|3|1Q|5|6|7|2T|8|@]|9|@]|A|$]]|$1|1R|3|-4|5|6|7|2U|8|@]|9|@]|A|$]]]|1S|$]]

You could just right click 

<blockquote>
 res
</blockquote>

and hit 

<blockquote>
 New
</blockquote>

, to create a 

<blockquote>
 Android Resource File
</blockquote>

, and choose 

<blockquote>
 Resource Type
</blockquote>

to be 

<blockquote>
 Drawable
</blockquote>

, and change whatever the default 

<blockquote>
 root element
</blockquote>

to 

<blockquote>
 shape
</blockquote>

Yeah it's kinda buggy in Android Studio to create a new XML file other than layout and values lol.

hope it can help you!!

blocks|key|165145|text|我在Android+Studio上也遇到了同样的问题，我在"res“下创建了一个"anim”目录，然后将xml文件复制到那个目录中，然后错误就消失了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|165146|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same problem with Android Studio , I created a directory "anim" under "res" then copied the xml file to that one then the error gone.

blocks|key|165165|text|你需要在<set/>标签中使用选择器，就像这样；|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|165166|<?xml+version="1.0"+encoding="utf-8"?>
<set+xmlns:android="http://schemas.android.com/apk/res/android">
++++<selector+xmlns:android="http://schemas.android.com/apk/res/android">
++++++++<item+android:state_enabled="true"+android:state_pressed="true">
++++++++++++<objectAnimator
++++++++++++++++android:duration="@android:integer/config_shortAnimTime"
++++++++++++++++android:propertyName="translationZ"
++++++++++++++++android:valueTo="15dp"
++++++++++++++++android:valueType="floatType"+/>
++++++++</item>
++++++++<item>
++++++++++++<objectAnimator
++++++++++++++++android:duration="@android:integer/config_shortAnimTime"
++++++++++++++++android:propertyName="translationZ"
++++++++++++++++android:valueTo="5dp"
++++++++++++++++android:valueType="floatType"+/>
++++++++</item>
++++</selector>
</set>|code-block|syntax|javascript|165167|entityMap^0|4|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You need to use selector inside <code>&lt;set/&gt;</code> tags like that;

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;set xmlns:android="http://schemas.android.com/apk/res/android"&gt;
 &lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
 &lt;item android:state_enabled="true" android:state_pressed="true"&gt;
 &lt;objectAnimator
 android:duration="@android:integer/config_shortAnimTime"
 android:propertyName="translationZ"
 android:valueTo="15dp"
 android:valueType="floatType" /&gt;
 &lt;/item&gt;
 &lt;item&gt;
 &lt;objectAnimator
 android:duration="@android:integer/config_shortAnimTime"
 android:propertyName="translationZ"
 android:valueTo="5dp"
 android:valueType="floatType" /&gt;
 &lt;/item&gt;
 &lt;/selector&gt;
&lt;/set&gt;
</code></pre>

blocks|key|165161|text|用来创建状态列表动画的选择器标签也有类似的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|165162|我的动画在动画资源文件夹中。我不得不把它移到动画文件夹里。|165163|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Had a similar problem with the selector tag used to create a state list animator.

My animation was in the anim resource folder. Had to move it to the animator folder.

blocks|key|167207|text|看看这个示例，我认为如果您添加xmlns:android属性(在shape标记内，如您下面的示例所示)，它将会起作用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|167208|xmlns:android="http://schemas.android.com/apk/res/android"|code-block|syntax|javascript|167209|我怀疑在那里声明了shape。|167210|entityMap^0|F|D|0|0|9|5|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

Looking at that example, I think if you add the <code>xmlns:android</code> attribute (inside the shape tag, as in the example that you are following), it will work:

<pre><code>xmlns:android="http://schemas.android.com/apk/res/android"
</code></pre>

I suspect that <code>shape</code> is declared there.

I'm using Android Studio I/O(Preview) 0.3.2

I'm using <a href="https://stackoverflow.com/questions/14364617/how-can-i-add-gradient-effect-to-background-color-of-textview-in-a-listview">this example</a> to define background gradient in my app. I get Element must be declared error. <img src="https://i.stack.imgur.com/jLNTU.png" alt="enter image description here"> 

I've checked and I'm not find any solutions. Can anyone help me how can I declare that tag in the xml

Element must be declared error for tag shape

Android Studio

Android

我使用的是Android Studio I/O(预览版) 0.3.2我使用在我的应用程序中定义背景渐变。I get元素必须声明为error。我已经检查过了，但我没有找到任何解决方案。有人能帮我解释一下如何在xml中声明那个标记吗

问元素必须声明为标记形状的错误
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问元素必须声明为标记形状的错误
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