blocks|key|161313|text|AppCompat是一个库项目。您需要在android项目中引用该库项目。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|161314|查看主题。|161315|更新|BOLD|161316|添加材料主题应该是方法。有关更多详细信息，请查看https://material.io/develop/android/docs/getting-started。|161317|entityMap|0|LINK|mutability|MUTABLE|url|https://material.io/develop/android/docs/getting-started^0|0|9|0|0|0|2|0|O|1K|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@$9|Z|A|10|B|J]]|D|@]|E|$]]|$1|K|3|L|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|M|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

<code>AppCompat</code> is a library project. You need to reference the library project in your android project.
Check the topic <a href="https://developer.android.com/tools/support-library/setup.html#add-library" rel="nofollow noreferrer">Adding libraries with resources</a>.
Update
Adding material theme should be the way. Check <a href="https://material.io/develop/android/docs/getting-started" rel="nofollow noreferrer">https://material.io/develop/android/docs/getting-started</a> for more details.

blocks|key|162647|text|如果您使用的是Eclipse，那么按照以下步骤将reference+library添加到您的项目中：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|162648|162649|在Project+Explorer视图中右键单击您的项目。|ordered-list-item|162650|在Android窗口中单击Properties。|162651|在<代码>D15组中，单击Add...+|162652|请参阅图像below.|unordered-list-item|162653|162654|162655|​|162656|162657|选择库。在“属性”窗口中再次单击“OK.|162658|Click++OK”按钮。|162659|162660|162661|📷|atomic|162662|162663|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/f41ef4836e9a802419e7156636b4baee.jpeg|imageAlt^0|7|7|O|H|0|0|1|G|0|1|7|D|A|0|D|6|1|1|0|0|0|0|H|2|0|7|2|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|1F|8|@$9|1G|A|1H|B|C]|$9|1I|A|1J|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|1K|8|@]|E|@]|F|$]]|$1|H|3|I|5|J|7|1L|8|@$9|1M|A|1N|B|D]]|E|@]|F|$]]|$1|K|3|L|5|J|7|1O|8|@$9|1P|A|1Q|B|D]|$9|1R|A|1S|B|D]]|E|@]|F|$]]|$1|M|3|N|5|J|7|1T|8|@$9|1U|A|1V|B|D]]|E|@]|F|$]]|$1|O|3|P|5|Q|7|1W|8|@]|E|@]|F|$]]|$1|R|3|-4|5|6|7|1X|8|@]|E|@]|F|$]]|$1|S|3|-4|5|6|7|1Y|8|@]|E|@]|F|$]]|$1|T|3|U|5|6|7|1Z|8|@]|E|@]|F|$]]|$1|V|3|-4|5|6|7|20|8|@]|E|@]|F|$]]|$1|W|3|X|5|J|7|21|8|@$9|22|A|23|B|D]]|E|@]|F|$]]|$1|Y|3|Z|5|J|7|24|8|@$9|25|A|26|B|D]]|E|@]|F|$]]|$1|10|3|-4|5|6|7|27|8|@]|E|@]|F|$]]|$1|11|3|U|5|6|7|28|8|@]|E|@]|F|$]]|$1|12|3|13|5|14|7|29|8|@]|E|@$9|2A|A|2B|1|2C]]|F|$]]|$1|15|3|U|5|6|7|2D|8|@]|E|@]|F|$]]|$1|16|3|-4|5|6|7|2E|8|@]|E|@]|F|$]]]|17|$18|$5|19|1A|1B|F|$1C|1D|1E|-4]]]]

If you're using Eclipse, then add the <code>reference library</code> into your project as the following steps:

<ol>
<li>Right-click your project in the <code>Project Explorer</code> View.</li>
<li>Click <code>Properties</code>.</li>
<li>Click <code>Android</code> in the <code>Properties</code> window.</li>
<li>In the <code>Library</code> group, click <code>Add...</code>

<ul>
<li>See the image below.</li>
</ul></li>
<li>Select the library. Click <code>OK</code>.</li>
<li>Click the <code>OK</code> button again in the Properties window.</li>
</ol>

<img src="https://i.stack.imgur.com/0PYIh.jpg" alt="The &quot;Add&quot; button in the project Properties window, Android section, Library group.">

blocks|key|164071|text|如果您使用的是Android+Studio，那么只需添加依赖项|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|164072|dependencies+{
+++++implementation+'com.android.support:appcompat-v7:25.0.1'
}|code-block|syntax|javascript|164073|敬app/build.gradle。这将会奏效|CODE|164074|entityMap^0|7|E|0|0|1|G|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|S|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|T|8|@$9|U|A|V|B|M]]|D|@]|E|$]]|$1|N|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|O|$]]

If you are using Android Studio then just add the dependency 

<pre><code>dependencies {
 implementation 'com.android.support:appcompat-v7:25.0.1'
}
</code></pre>

to <code>app/build.gradle</code>. And that will work

blocks|key|2967544|text|对于任何使用VS2015的人来说，我也收到了这个错误，结果发现我并没有将这个库添加到项目中……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2967545|Install-Package+Xamarin.Android.Support.v7.AppCompat|code-block|syntax|javascript|2967546|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|$]]

For anyone out there using VS2015, I was getting this error too, and it turns out I hadn't added the library to the project...

<pre><code>Install-Package Xamarin.Android.Support.v7.AppCompat
</code></pre>

blocks|key|160378|text|如果您使用的是Eclipse，那么如果您要使用资源，仅将android-support-v7-appcompat.jar复制到libs文件夹将不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|160379|从这里开始对"Adding+libraries+with+resources“执行以下步骤。|offset|length|160380|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/tools/support-library/setup.html#add-library^0|0|7|V|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

If you are using Eclipse just copying android-support-v7-appcompat.jar to libs folder will not work if you are going to use resources.

Follow steps from here for "<a href="https://developer.android.com/tools/support-library/setup.html#add-library" rel="nofollow noreferrer">Adding libraries with resources</a>".

blocks|key|2967471|text|一个简单的解决方案-将此文件(/res/values/styles.xml)的内容替换为以下文本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2967472|<resources>


<style+name="AppTheme"+parent="android:Theme.Holo.Light.DarkActionBar">
++++
</style>|code-block|syntax|javascript|2967473|​|2967474|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

A simple solution - replace contents this file (/res/values/styles.xml) to this is text:

<pre><code>&lt;resources&gt;

&lt;!-- Base application theme. --&gt;
&lt;style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar"&gt;
 &lt;!-- Customize your theme here. --&gt;
&lt;/style&gt;
</code></pre>

blocks|key|2967383|text|在我的例子中，我将一个android项目从一台计算机转移到另一台计算机上，遇到了这个问题。对我来说起作用的是我看到的一些答案的组合：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2967384|2967385|删除位于workspace|unordered-list-item|2967386|Install+sdk+21|2967387|的libs文件夹中的appcompat库副本。更改项目属性以使用该sdk+build+|2967388|2967389|📷|atomic|2967390|​|2967391|2967392|设置并启动与sdks+21|2967393|兼容的仿真器更新运行配置以提示设备在其上运行并选择Run|2967394|2967395|在完成这些步骤后，我的系统运行良好。|2967396|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7a92a288f33b1f113f6c1080c7564ec5.png|imageAlt^0|B|7|0|0|0|0|0|0|0|1|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1E|8|@]|D|@]|E|$]]|$1|J|3|K|5|I|7|1F|8|@]|D|@]|E|$]]|$1|L|3|M|5|I|7|1G|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1I|8|@]|D|@$9|1J|A|1K|1|1L]]|E|$]]|$1|R|3|S|5|6|7|1M|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1N|8|@]|D|@]|E|$]]|$1|U|3|V|5|I|7|1O|8|@]|D|@]|E|$]]|$1|W|3|X|5|I|7|1P|8|@]|D|@]|E|$]]|$1|Y|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|Z|3|10|5|6|7|1R|8|@]|D|@]|E|$]]|$1|11|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]]|12|$13|$5|14|15|16|E|$17|18|19|-4]]]]

In my case, I took an <code>android</code> project from one computer to another and had this problem. What worked for me was a combination of some of the answers I've seen:

<ul>
<li>Remove the copy of the appcompat library that was in the libs folder
of the workspace</li>
<li>Install sdk 21</li>
<li>Change the project properties to use that sdk build
<img src="https://i.stack.imgur.com/ugFTg.png" alt="enter image description here"></li>
<li>Set up and start an emulator compatible with sdks 21</li>
<li>Update the Run Configuration to prompt for device to run on &amp; choose
Run</li>
</ul>

Mine ran fine after these steps.

blocks|key|2967456|text|dependencies+{

++++compile+'com.android.support:appcompat-v7:23.0.0'

}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2967457|这对我很有效..。在Android+Studio中...|unstyled|2967458|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>dependencies {

 compile 'com.android.support:appcompat-v7:23.0.0'

}
</code></pre>

This worked for me... in Android Studio...

blocks|key|164107|text|dependencies+{
++++implementation+'com.android.support:appcompat-v7:28.0.0'
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|164108|编译已经被实现取代了，不知道为什么。|unstyled|164109|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>dependencies {
 implementation 'com.android.support:appcompat-v7:28.0.0'
}
</code></pre>

compile has been replaced by implementation, don't know why.

blocks|key|162804|text|使用Visual+Studio2015+(Windows7)+%2B+Xamarin有这个错误，并且在尝试了多种方法(安装包，下载android_m2repository_r10.zip...)已结束删除内部的完整Xamarin文件夹|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|162805|162806|+C:\Users\\AppData\Local|blockquote|162807|162808|162809|在那之后，在VS中重新构建应用程序，错误就消失了。|162810|entityMap^0|2X|A|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|S|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|T|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|U|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|V|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|W|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|O|$]]

Using Visual Studio 2015 (Windows7) + Xamarin had this error and after trying multiple things (installing packages, download android_m2repository_r10.zip...) ended removing the full Xamarin folder inside

<blockquote>
<pre><code>C:\Users\&lt;my user&gt;\AppData\Local
</code></pre>
</blockquote>

After that, Rebuild the application in VS and errors disappeared.

blocks|key|2754914|text|确保你的软件开发工具包中有一个v7目录，我认为有'Android+Support+Library‘(在附加软件中)就足够了。原来我遗漏了'Local+Maven+repository+for+Support+Libraries+(extras；android；m2pository)‘，Studio发现了这一点，并修复了gradle依赖项。使用gradle来构建，然后就成功了。$+cat应用/build.gradle|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2754915|apply+plugin:+'com.android.application'

android+{
++++compileSdkVersion+23
++++buildToolsVersion+"23.0.2"

++++defaultConfig+{
++++++++applicationId+"pat.example.com.gdbdemo"
++++++++minSdkVersion+15
++++++++targetSdkVersion+23
++++++++versionCode+1
++++++++versionName+"1.0"
++++}
++++buildTypes+{
++++++++release+{
++++++++++++minifyEnabled+false
++++++++++++proguardFiles+getDefaultProguardFile('proguard-android.txt'),+'proguard-rules.pro'
++++++++}
++++}
}

dependencies+{
+++++compile+fileTree(dir:+'libs',+include:+['*.jar'])
++++compile+'com.android.support:appcompat-v7:23.2.1'
}|code-block|syntax|javascript|2754916|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|$]]

make sure there is a v7 directory in your sdk, I thought having the 'Android Support Library' (in Extras) was sufficient. Turns out I was missing the 'Local Maven repository for Support Libraries (extras;android;m2repository)' Studio found that actually and fixed the gradle dependencies. using gradle to build then worked.
$ cat app/build.gradle

<pre><code>apply plugin: 'com.android.application'

android {
 compileSdkVersion 23
 buildToolsVersion "23.0.2"

 defaultConfig {
 applicationId "pat.example.com.gdbdemo"
 minSdkVersion 15
 targetSdkVersion 23
 versionCode 1
 versionName "1.0"
 }
 buildTypes {
 release {
 minifyEnabled false
 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 }
 }
}

dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])
 compile 'com.android.support:appcompat-v7:23.2.1'
}
</code></pre>

blocks|key|160485|text|如果您正在使用Android.mk构建，那么使用USE_AAPT2，它从AAR链接已构建的资源。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|160486|在Android.mk文件中添加以下行：|160487|LOCAL_USE_AAPT2+:=+true|160488|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you are using the Android.mk to build then use the USE_AAPT2, which link in the built resource from the AAR.

Add below line in Android.mk file:

LOCAL_USE_AAPT2 := true

blocks|key|2754893|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2754894|在管理器中更新您的SDK，并确保在extra的|ordered-list-item|2754895|中包含Android+support+library，在文件资源管理器(mac上的Finder)中转到SDK，找到extra的文件夹(|offset|length|style|CODE|2754896|中的..\sdk\extras\android\support\v7\appcompat\res\values)。在其中的某处有一个themes.xml和themes_base.xml。复制这两个文件。|2754897|在项目中将文件粘贴到'values‘目录|2754898|中|2754899|entityMap^0|0|0|3|N|0|2|1H|1U|A|25|F|0|0|0^^$0|@$1|2|3|-4|4|5|6|R|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|S|7|@]|8|@]|9|$]]|$1|D|3|E|4|5|6|T|7|@$F|U|G|V|H|I]]|8|@]|9|$]]|$1|J|3|K|4|C|6|W|7|@$F|X|G|Y|H|I]|$F|Z|G|10|H|I]|$F|11|G|12|H|I]]|8|@]|9|$]]|$1|L|3|M|4|C|6|13|7|@]|8|@]|9|$]]|$1|N|3|O|4|5|6|14|7|@]|8|@]|9|$]]|$1|P|3|-4|4|5|6|15|7|@]|8|@]|9|$]]]|Q|$]]

<ol>
<li>Update your SDK in the manager and be sure to include <code>Android
support library</code> in extra's </li>
<li>Go to SDK in file explorer (Finder on mac) track down the extra's
folder (<code>..\sdk\extras\android\support\v7\appcompat\res\values</code> on
Windows). Somewhere in there is a <code>themes.xml</code> and
<code>themes_base.xml</code>. Copy both of these files.</li>
<li>In your project paste the files into 'values' directory</li>
</ol>

blocks|key|2967553|text|如果您正在使用MAC的Visual+Studio，请单击项目>恢复Nutget包来修复这个问题|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2967554|entityMap^0|B|10|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

If you are using Visual Studio for MAC, fix the problem clicking on Project > Restoring Nutget packages

blocks|key|160434|text|在Eclipse中:在遵循Adding+Support+Libraries中的说明将支持库作为项目库导入时，不要忘记选中选项"Copy+proyects+into+workspace"！|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|160435|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/tools/support-library/setup.html#add-library^0|1I|12|D|O|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

In Eclipse: When importing a support library as a project library following the instructions at <a href="https://developer.android.com/tools/support-library/setup.html#add-library" rel="nofollow">Adding Support Libraries</a>, don't forget to check the option "Copy proyects into workspace"!

blocks|key|162786|text|我也有同样的问题。这里列出的解决方案都没有对我的情况有所帮助。事实证明，我是在将项目的父文件夹导入Android+Studio1.5，而不是项目文件夹本身。这让Gradel惊慌失措。解决方案是改为导入项目文件夹。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|162787|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 this same problem. None of the solutions listed here helped my situation. As it turns out, I was importing the parent folder for a project into Android Studio 1.5, rather than the project folder itself. This threw Gradel into a tizzy. Solution was to import the project folder instead.

blocks|key|2967556|text|在xamarin中，如果您在添加任何新的sdk时遇到此问题。简单的解决方案是打开您的样式文件并添加以下行。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2967557|<style+name="AppTheme"+parent="android:Theme.Holo.Light.DarkActionBar"></style>|offset|length|style|CODE|2967558|这是比添加appcompat更好的解决方案。|2967559|entityMap^0|0|0|27|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

In xamarin if you face this issue when you add any new sdk.
The simple solution is Open your styles file and add
this line.

<code>&lt;style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar"&gt;&lt;/style&gt;</code>

It's better solution rather than adding appcompat.

I used ActionBar Style Generator, and now trying to use into my app, but getting : 

<blockquote>
 error: Error retrieving parent for item: No resource found that matches the given name '@style/
 Theme.AppCompat.Light.DarkActionBar'.
</blockquote>

i am using android-support-v7-appcompat.jar lib inside libs folder

my target is to make my app compatible 2.3 or above

No resource found - Theme.AppCompat.Light.DarkActionBar

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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我使用了ActionBar样式生成器，现在尝试在我的应用程序中使用，但得到：错误:检索项目的父项时出错:找不到与给定名称'@style/ Theme.AppCompat.Light.DarkActionBar‘匹配的资源。我在libs文件夹中使用android-support-v7-appcompat.jar库我的目标是让我的应用程序兼容2.3或更高版本

问找不到资源- Theme.AppCompat.Light.DarkActionBar
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