blocks|key|865123|text|android:id定义此视图的ID。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|865124|android:labelFor引用另一个视图的ID。|865125|entityMap^0|0|A|0|0|G|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|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

<code>android:id</code> defines the ID of this view.

<code>android:labelFor</code> references the ID of another view.

blocks|key|2472865|text|labelFor是可访问性选项的属性。您可以将其分配给标签，这样如果用户在表单上单击EditText字段，android就可以知道要将什么读取给用户(用于低视力用户的TalkBack)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2472866|id为该视图提供一个标识符名，以便稍后使用View.findViewById()或Activity.findViewById()检索它。|2472867|entityMap^0|0|8|16|8|0|0|2|L|J|15|N|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|I|$]]

The <code>labelFor</code> is an attribute for accessibility options. You assign this to a label so that if, on a form , user clicks a <code>EditText</code> field , android can know what to read (TalkBack for low vision users) to user.

The <code>id</code> Supply an identifier name for this view, to later retrieve it with <code>View.findViewById()</code> or <code>Activity.findViewById()</code>.

blocks|key|865202|text|android:id
为此视图提供标识符名，以便稍后使用View.findViewById()或Activity.findViewById()检索该视图。这必须是资源引用；通常使用@%2B语法来创建新的ID资源。例如:+android:id="@%2Bid/my_id“，它允许您稍后使用findViewById(R.id.my_id)检索视图。
必须引用其他资源、表单"@[%2B][package:]type:name"或表单"?package:name“中的主题属性。
这对应于全局属性资源符号id。|type|blockquote|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|865203|android:labelFor
公共静态最终int+labelFor
指定此视图作为可访问性标签的视图的id。例如，UI中的TextView之前的EditText通常指定EditText中包含什么信息。因此，TextView是EditText的标签。
必须是整数值，如"100“。
这也可能是对包含此类型值的资源(形式为"@package:+type+:name")或主题属性(形式为"?package:name")的引用。
常数:+16843718+(0x010103c6)|865204|更新：|unstyled|865205|例如-|865206|+<LinearLayout+xmlns:android="http://schemas.android.com/apk/res/android"+
++++android:layout_width="match_parent"+
++++android:layout_height="match_parent"+
++++android:orientation="vertical">
++++<LinearLayout+android:layout_height="wrap_content"+
++++android:orientation="vertical"+
++++android:layout_width="match_parent">
+++++<TextView+android:layout_width="match_parent"+
++++android:layout_height="match_parent"+
++++android:labelFor="@%2Bid/edit_item_name"+
++++android:text="Item+Name"/>
+++++<EditText+android:id="@%2Bid/edit_item_name"+
++++android:layout_width="match_parent"+
++++android:layout_height="wrap_content"+
++++android:hint="Item+Name"/>
++++</LinearLayout>
++</LinearLayout>|code-block|syntax|javascript|865207|参考资料：android:id和android:labelFor。|865208|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/reference/android/view/View.html#attr_android:id|1|http://developer.android.com/reference/android/R.attr.html^0|0|A|S|J|1C|N|3W|O|51|P|0|0|G|R|8|0|0|3|0|0|0|5|A|0|G|G|1|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|D]|$9|19|A|1A|B|D]|$9|1B|A|1C|B|D]|$9|1D|A|1E|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|1F|8|@$9|1G|A|1H|B|C]|$9|1I|A|1J|B|C]]|E|@]|F|$]]|$1|I|3|J|5|K|7|1K|8|@$9|1L|A|1M|B|C]]|E|@]|F|$]]|$1|L|3|M|5|K|7|1N|8|@]|E|@]|F|$]]|$1|N|3|O|5|P|7|1O|8|@]|E|@]|F|$Q|R]]|$1|S|3|T|5|K|7|1P|8|@]|E|@$9|1Q|A|1R|1|1S]|$9|1T|A|1U|1|1V]]|F|$]]|$1|U|3|-4|5|K|7|1W|8|@]|E|@]|F|$]]]|V|$W|$5|X|Y|Z|F|$10|11]]|12|$5|X|Y|Z|F|$10|13]]]]

<blockquote>
 android:id
 
 Supply an identifier name for this view, to later retrieve it with
 <code>View.findViewById()</code> or <code>Activity.findViewById()</code>. This must be a
 resource reference; typically you set this using the @+ syntax to
 create a new ID resources. For example: android:id="@+id/my_id" which
 allows you to later retrieve the view with <code>findViewById(R.id.my_id)</code>.
 
 Must be a reference to another resource, in the form
 <code>"@[+][package:]type:name"</code> or to a theme attribute in the form
 "?[package:][type:]name".
 
 This corresponds to the global attribute resource symbol id.
</blockquote>

<hr>

<blockquote>
 android:labelFor
 
 <blockquote>
 public static final int labelFor
 
 Specifies the id of a view for which this view serves as a label for
 accessibility purposes. For example, a TextView before an EditText in
 the UI usually specifies what infomation is contained in the EditText.
 Hence, the TextView is a label for the EditText.
 
 Must be an integer value, such as "100".
 
 This may also be a reference to a resource (in the form
 "@[package:]type:name") or theme attribute (in the form
 "?[package:][type:]name") containing a value of this type.
 
 Constant Value: 16843718 (0x010103c6)
 </blockquote>
</blockquote>

UPDATE:

For example -

<pre><code> &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:orientation="vertical"&gt;
 &lt;LinearLayout android:layout_height="wrap_content" 
 android:orientation="vertical" 
 android:layout_width="match_parent"&gt;
 &lt;TextView android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:labelFor="@+id/edit_item_name" 
 android:text="Item Name"/&gt;
 &lt;EditText android:id="@+id/edit_item_name" 
 android:layout_width="match_parent" 
 android:layout_height="wrap_content" 
 android:hint="Item Name"/&gt;
 &lt;/LinearLayout&gt;
 &lt;/LinearLayout&gt;
</code></pre>

Reference: <a href="http://developer.android.com/reference/android/view/View.html#attr_android:id">android:id</a> and <a href="http://developer.android.com/reference/android/R.attr.html">android:labelFor</a>.

blocks|key|2472934|text|除了所有答案之外，如果你不为应用程序使用xml文件，这是一个用于服务视图ID的简短说明:|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2472935|(顺便说一句，在我看来，使用xml糟透了--我唯一的xml文件是清单文件:D由gradle生成)|2472936|@IdRes+-资源id注释|2472937|/**+define+resource+id+for+view+*/
@IdRes+
int+TEXT_VIEW_ID++=+"111111";

/**+create+edit+tex+in+code+*/
EditText+myTextView+=+new+EditText(Context);
/**+set+view+id+*/
myTextView.setID(TEXT_VIEW_ID);
/**+set+layout+params+etc+then+attach+or+inflate+as+u+wish+to+view+hierarchy+*/++++

/**+use+view+id+to+find+view+*/
EditText+etFound+=+(EditText)+View.findViewById(TEXT_VIEW_ID);|code-block|syntax|javascript|2472938|ps。在使用Activity.onSaveInstanceState(Bundle)时，必须使用ID来保持层次视图的状态--因此，如果您在代码中创建(VIEW+/小部件/布局等)。别忘了设置它。|2472939|entityMap^0|0|18|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|W|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|X|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|Y|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

in addition to all answers if u don't use xml files for apps this is a brief explanation what for serves VIEW ID : 

(btw in my opinion using xml sucks - my only xml file is manifest :D generated by gradle)

@IdRes - annotation for resource id 

<pre><code>/** define resource id for view */
@IdRes 
int TEXT_VIEW_ID = "111111";

/** create edit tex in code */
EditText myTextView = new EditText(Context);
/** set view id */
myTextView.setID(TEXT_VIEW_ID);
/** set layout params etc then attach or inflate as u wish to view hierarchy */ 

/** use view id to find view */
EditText etFound = (EditText) View.findViewById(TEXT_VIEW_ID);
</code></pre>

ps. ID is mandatory to preserve state of hierarchy view when Activity.onSaveInstanceState(Bundle) is used - so if u create in code (VIEW / WIDGET / LAYOUT etc.) don't forget to set it.

blocks|key|269311|text|android:labelFor|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|269312|使用此属性指示视图应充当另一个视图的内容标签。|blockquote|269313|<LinearLayout
++++android:layout_width="match_parent"
++++android:layout_height="match_parent"
++++android:orientation="vertical">
++++<TextView
++++++++android:layout_width="match_parent"
++++++++android:layout_height="wrap_content"
++++++++android:text="@string/email_subject_label"
++++++++android:labelFor="@id/email_subject"+/>
++++<EditText
++++++++android:id="@%2Bid/email_subject"
++++++++android:layout_width="wrap_content"
++++++++android:layout_height="wrap_content"+/>
</LinearLayout>|code-block|syntax|javascript|269314|有关更多详细信息：Android可访问性-如何提供内容标签|269315|entityMap|0|LINK|mutability|MUTABLE|url|https://support.google.com/accessibility/android/answer/7158690?hl=en^0|0|G|0|0|0|9|K|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|11|8|@]|D|@]|E|$L|M]]|$1|N|3|O|5|6|7|12|8|@]|D|@$9|13|A|14|1|15]]|E|$]]|$1|P|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]]]

android:labelFor
<blockquote>
Use this attribute to indicate that a View should act as a content label for another View.
</blockquote>
<pre><code>&lt;LinearLayout
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;match_parent&quot;
 android:orientation=&quot;vertical&quot;&gt;
 &lt;TextView
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;
 android:text=&quot;@string/email_subject_label&quot;
 android:labelFor=&quot;@id/email_subject&quot; /&gt;
 &lt;EditText
 android:id=&quot;@+id/email_subject&quot;
 android:layout_width=&quot;wrap_content&quot;
 android:layout_height=&quot;wrap_content&quot; /&gt;
&lt;/LinearLayout&gt;
</code></pre>
For more details: <a href="https://support.google.com/accessibility/android/answer/7158690?hl=en" rel="nofollow noreferrer">Android Accessibility - How to provide content labels</a>

blocks|key|2472983|text|android:id只是访问视图的视图ID+(以编程方式)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2472984|android:labelFor有时会与林特警告一起弹出：|2472985|缺少可访问性标签:提供引用此视图的“android:labelFor”视图或提供“android:线索”的视图|blockquote|2472986|因此，例如:如果您有一个不描述自身的EditText，那么Android想知道您是否可能有一些标题或文本(TextView)来描述EditText的用途。因此，引用TextView的id基本上可以让您了解如何在可访问性模式下将文本放入EditText中。|2472987|请参阅：https://developer.android.com/guide/topics/ui/accessibility/principles#editable|2472988|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/guide/topics/ui/accessibility/principles#editable^0|0|A|0|0|G|0|0|I|8|1H|8|2A|8|39|8|0|4|27|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1C|8|@]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|O|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

<code>android:id</code> Simply the view ID to (programmatically) access the view.
<code>android:labelFor</code> pops up sometimes in combination with the lint warning:
<blockquote>
Missing accessibility label: provide either a view with an
'android:labelFor' that references this view or provide an
'android:hint'
</blockquote>
So, for example: If you have an <code>EditText</code> that does not describe itself, Android wonders if you might have some title or text (<code>TextView</code>) that might describes what the EditText is used for.
So referencing the id of the <code>TextView</code> basically gives you an idea what to put into the <code>EditText</code> with its text in the accessibility mode.
See:
<a href="https://developer.android.com/guide/topics/ui/accessibility/principles#editable" rel="nofollow noreferrer">https://developer.android.com/guide/topics/ui/accessibility/principles#editable</a>

I wrote a simple layout which has an <code>EditText</code>, but it's showing the following warning message:

<blockquote>
 “No label views point to this text field”
</blockquote>

While searching I found <a href="https://stackoverflow.com/a/16896135/2624806">this</a> and it solved that warning message, 
but did not get difference between both attributes <code>android:id</code> and <code>android:labelFor</code>. Any clarification?

Difference between android:id and android:labelFor?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我编写了一个具有EditText的简单布局，但它显示了以下警告消息：“没有标签视图指向此文本字段”在搜索时，我找到了，它解决了这个警告消息，但是android:id和android:labelFor这两个属性没有区别。有什么澄清吗？

问android:id和android:labelFor的区别是什么？
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问android:id和android:labelFor的区别是什么？EN