blocks|key|705627|text|通过为我的ImageView设置属性android:contentDescription解决了此警告|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|705628|android:contentDescription="@string/desc"|code-block|syntax|javascript|705629|Android+Lint在ADT16中的支持抛出此警告，以确保图像小部件提供contentDescription。|705630|这定义了简要描述视图内容的文本。此属性主要用于辅助功能。因为有些视图没有文本表示，所以这个属性可以用来提供文本表示。|705631|像ImageViews和ImageButtons这样的非文本小部件应该使用contentDescription属性来指定小部件的文本描述，以便屏幕阅读器和其他辅助工具能够充分描述用户界面。|705632|entityMap^0|I|Q|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|Y|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

Resolved this warning by setting attribute <code>android:contentDescription</code> for my ImageView

<pre><code>android:contentDescription="@string/desc"
</code></pre>

Android Lint support in ADT 16 throws this warning to ensure that image widgets provide a contentDescription.

This defines text that briefly describes content of the view. This property is used primarily for accessibility. Since some views do not have textual representation this attribute can be used for providing such. 

Non-textual widgets like ImageViews and ImageButtons should use the contentDescription attribute to specify a textual description of the widget such that screen readers and other accessibility tools can adequately describe the user interface.

blocks|key|705677|text|禁用Lint警告很容易在以后给您带来麻烦。最好只为所有ImageViews指定contentDescription。如果您不需要描述，那么只需使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705678|android:contentDescription="@null"|code-block|syntax|javascript|705679|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Disabling Lint warnings will easily get you into trouble later on. You're better off just specifying contentDescription for all of your ImageViews. If you don't need a description, then just use:

<pre><code>android:contentDescription="@null"
</code></pre>

blocks|key|489974|text|另一种选择是逐个禁止显示警告：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|489975|xmlns:tools="http://schemas.android.com/tools"++(usually+inserted+automatically)
tools:ignore="contentDescription"|code-block|syntax|javascript|489976|示例：|489977|<RelativeLayout+xmlns:android="http://schemas.android.com/apk/res/android"
++++xmlns:tools="http://schemas.android.com/tools"
++++android:layout_width="match_parent"
++++android:layout_height="match_parent"+
++++tools:ignore="contentDescription"+>

+++++++<ImageView
++++++++++++android:layout_width="50dp"
++++++++++++android:layout_height="match_parent"
++++++++++++android:adjustViewBounds="true"
++++++++++++android:padding="5dp"
++++++++++++android:src="@drawable/icon"+/>|489978|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Another option is to suppress the warning individually:

<pre><code>xmlns:tools="http://schemas.android.com/tools" (usually inserted automatically)
tools:ignore="contentDescription"
</code></pre>

Example: 

<pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent" 
 tools:ignore="contentDescription" &gt;

 &lt;ImageView
 android:layout_width="50dp"
 android:layout_height="match_parent"
 android:adjustViewBounds="true"
 android:padding="5dp"
 android:src="@drawable/icon" /&gt;
</code></pre>

blocks|key|490272|text|转到Gradle文件(模块应用程序)，添加下面的代码块|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|490273|android+{
++++...+
++++lintOptions+{
++++++++disable+'ContentDescription'
++++}
++++...
}|code-block|syntax|javascript|490274|没有更多的警告！快乐编码|490275|entityMap^0|2|6|0|0|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]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Go to <code>Gradle</code> file (module app), add below code block

<pre><code>android {
 ... 
 lintOptions {
 disable 'ContentDescription'
 }
 ...
}
</code></pre>

No more warning! happy coding

blocks|key|490354|text|如果您想以一种优雅方式取消此警告(因为您确定此特定ImageView不需要可访问性)，则可以使用特殊属性：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|490355|android:importantForAccessibility="no"|code-block|syntax|javascript|490356|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you want to suppress this warning in elegant way (because you are sure that accessibility is not needed for this particular ImageView), you can use special attribute:

<pre><code>android:importantForAccessibility="no"
</code></pre>

blocks|key|705789|text|安卓辅助功能所需的ContentDescription。特别是对于屏幕阅读器功能。如果你不支持安卓辅助功能，你可以用setup+Lint忽略它。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|705790|所以只需创建lint.xml即可。|705791|<?xml+version="1.0"+encoding="UTF-8"?>
<lint>

++++<issue+id="ContentDescription"+severity="ignore"+/>

</lint>|code-block|syntax|javascript|705792|并将其放到app文件夹中。|705793|​|705794|📷|atomic|705795|705796|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/studio/write/lint|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/3359bb2be47c1bcfd111e789cd942585.png|imageAlt^0|9|I|1S|4|0|0|6|8|0|0|5|3|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|F|3|G|5|6|7|1E|8|@$9|1F|A|1G|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1H|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1I|8|@$9|1J|A|1K|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|1L|8|@]|D|@]|E|$]]|$1|Q|3|R|5|S|7|1M|8|@]|D|@$9|1N|A|1O|1|1P]]|E|$]]|$1|T|3|P|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1R|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]|12|$5|13|Y|14|E|$15|16|17|-4]]]]

<code>ContentDescription</code> needed for the Android accessibility.
Particularly for the screen reader feature.
If you don't support Android accessibility you can ignore it 
with setup <a href="https://developer.android.com/studio/write/lint" rel="nofollow noreferrer" title="Lint">Lint</a>.

So just create <code>lint.xml</code>.

<pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;lint&gt;

 &lt;issue id="ContentDescription" severity="ignore" /&gt;

&lt;/lint&gt;
</code></pre>

And put it to the <code>app</code> folder.

<a href="https://i.stack.imgur.com/kEKrf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kEKrf.png" alt="enter image description here"></a>

blocks|key|490191|text|对于纯粹是装饰性的图形元素，将其各自的android:contentDescription+XML属性设置为"@null“。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|490192|如果你的应用程序只支持运行Android4.1+(API+level+16)或更高版本的设备，你可以将这些元素的android:importantForAccessibility+XML属性设置为"no“|490193|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|$]]

For graphical elements that are purely decorative, set their respective android:contentDescription XML attributes to "@null". 

If your app only supports devices running Android 4.1 (API level 16) or higher, you can instead set these elements' android:importantForAccessibility XML attributes to "no"

blocks|key|705713|text|非文本小部件需要以某种方式提供内容描述，以便以文本方式描述图像，以便屏幕阅读器能够描述用户界面。您可以忽略属性xmlns:tools="http://schemas.android.com/tools"|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|705714|tools:ignore="contentDescription"或定义属性android:contentDescription="your+description"|705715|entityMap^0|1J|1A|0|0|X|12|19|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

Non textual widgets need a content description in some ways to describe textually the image so that screens readers to be able to describe the user interface. You can ignore the property <code>xmlns:tools="http://schemas.android.com/tools" 
tools:ignore="contentDescription"</code> or define the property <code>android:contentDescription="your description"</code>

blocks|key|705732|text|因为我只是为了美观而需要ImageView添加一个图标，所以我在xml文件中的每个ImageView中都添加了tools:ignore="ContentDescription"。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|705733|我不再收到任何错误消息|705734|entityMap^0|1J|X|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

Since I need the ImageView to add an icon just for aesthetics I've added <code>tools:ignore="ContentDescription"</code> within each ImageView I had in my xml file.

I'm no longer getting any error messages

I am getting warning as
"[Accessibility] Missing contentDescription attribute on image" for imageview. while using android lint

What does that mean?

Android Lint contentDescription warning

Android

对于imageview，我收到“图像上缺少contentDescription属性的辅助功能”的警告。在使用android lint时那是什么意思？

问安卓Lint contentDescription警告
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回答 9

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