blocks|key|1591762|text|在我的例子中，我将Android+Googlemaps应用程序API1移植到API2上，几个小时后，我意识到我并没有添加|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1591763|C:\Program+Files\..(your_path_)..
++..\adt-bundle-windows-x86_64\sdk\extras\android\support\v4|code-block|syntax|javascript|1591764|添加到外部库..|1591765|希望这能有所帮助|1591766|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

In my case I was porting an Android Googlemaps app API1 to API2, and after many hours I realized I was not adding

<pre><code>C:\Program Files\..(your_path_)..
 ..\adt-bundle-windows-x86_64\sdk\extras\android\support\v4
</code></pre>

to External Libraries..

Hope this helps

blocks|key|1591774|text|在我的例子中，最终找到的解决方案是文档化的here|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1591775|1591776|确保您已使用应用程序项目根目录下的SDK+Manager.|unordered-list-item|1591777|Create+alibs/目录下载了安卓支持库。|style|BOLD|1591778|将JAR文件从Android+SDK安装目录(如<sdk>/extras/android/support/v4/android-support-v4.jar)复制到应用程序的项目<代码>E112libs/<代码>E213目录中。<代码>H214<代码>F215|CODE|1591779|1591780|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/tools/support-library/setup.html^0|L|4|0|0|0|0|8|5|I|6|0|0|3M|O|1I|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|-4|5|6|7|11|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|12|8|@]|9|@]|C|$]]|$1|H|3|I|5|G|7|13|8|@$A|14|B|15|J|K]|$A|16|B|17|J|K]]|9|@]|C|$]]|$1|L|3|M|5|G|7|18|8|@$A|19|B|1A|J|K]|$A|1B|B|1C|J|N]]|9|@]|C|$]]|$1|O|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]|$1|P|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]]|Q|$R|$5|S|T|U|C|$V|W]]]]

In my case, the solution was eventually found as documented <a href="http://developer.android.com/tools/support-library/setup.html">here</a>:

<ul>
<li>Make sure you have downloaded the Android Support Library using the SDK Manager.</li>
<li>Create a libs/ directory in the root of your application project.</li>
<li>Copy the JAR file from your Android SDK installation directory (e.g., <code>&lt;sdk&gt;/extras/android/support/v4/android-support-v4.jar</code>) into your application's project libs/ directory.</li>
</ul>

blocks|key|5470242|text|转到Android+SDK的目录，然后：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5470243|jar+tvf+./extras/android/support/v13/android-support-v13.jar+%7Cgrep+v4.*util|5470244|在这个jar文件中，您可以看到您在应用程序中使用的一个类(在v4/util下)。|5470245|+++++0+Wed+Mar+26+20:29:48+SGT+2014+android/support/v4/util/
++3373+Wed+Mar+26+20:29:48+SGT+2014+android/support/v4/util/ArrayMap.class
++5329+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/MapCollections.class
++1625+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/ContainerHelpers.class
++3677+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/MapCollections$KeySet.class
++1220+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/DebugUtils.class
++3435+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/AtomicFile.class
++1287+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/LogWriter.class
++3701+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/MapCollections$ValuesCollection.class
++4446+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/MapCollections$EntrySet.class
++5910+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/SparseArrayCompat.class
++3273+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/TimeUtils.class
++5776+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/LongSparseArray.class
++5680+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/LruCache.class
++3341+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/MapCollections$MapIterator.class
++1575+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/MapCollections$ArrayIterator.class
++2439+Wed+Mar+26+20:29:48+SGT+2014+android/support/v4/util/ArrayMap$1.class
++8611+Wed+Mar+26+20:29:46+SGT+2014+android/support/v4/util/SimpleArrayMap.class|code-block|syntax|javascript|5470246|因此，错误"package+android.support.v4.util+not+exist“仅仅意味着您必须将上面的jar文件复制到libs子目录并重新编译。|5470247|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|R|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Go to your Android SDK's directory and:

jar tvf ./extras/android/support/v13/android-support-v13.jar |grep v4.*util

And within this jar file you can see one of the classes (under v4/util) you have used in your applications.

<pre><code> 0 Wed Mar 26 20:29:48 SGT 2014 android/support/v4/util/
 3373 Wed Mar 26 20:29:48 SGT 2014 android/support/v4/util/ArrayMap.class
 5329 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/MapCollections.class
 1625 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/ContainerHelpers.class
 3677 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/MapCollections$KeySet.class
 1220 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/DebugUtils.class
 3435 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/AtomicFile.class
 1287 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/LogWriter.class
 3701 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/MapCollections$ValuesCollection.class
 4446 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/MapCollections$EntrySet.class
 5910 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/SparseArrayCompat.class
 3273 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/TimeUtils.class
 5776 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/LongSparseArray.class
 5680 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/LruCache.class
 3341 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/MapCollections$MapIterator.class
 1575 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/MapCollections$ArrayIterator.class
 2439 Wed Mar 26 20:29:48 SGT 2014 android/support/v4/util/ArrayMap$1.class
 8611 Wed Mar 26 20:29:46 SGT 2014 android/support/v4/util/SimpleArrayMap.class
</code></pre>

So the error "package android.support.v4.util does not exist" simply means you have to copy the above jar file to your libs subdirectory and recompile.

blocks|key|5470288|text|如果您使用的是Gradle，我还必须将这一行添加到内部build.gradle的依赖项部分，您可以在该文件中指定minSdkVersion和targetSdkVersion|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5470289|dependencies+{
++compile+"com.android.support:support-v4:19.0.%2B"
}|code-block|syntax|javascript|5470290|我相信无论你的compileSdkVersion是什么，'19'应该是什么。如果我错了，它会告诉你它应该是什么。|5470291|entityMap^0|7|6|R|C|1K|D|1Y|G|0|0|7|H|S|4|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|N|$]]

If you're using <code>Gradle</code>, I had to also add this line to the dependencies section of my inner <code>build.gradle</code>, the file where you specify your <code>minSdkVersion</code> and <code>targetSdkVersion</code>:

<pre><code>dependencies {
 compile "com.android.support:support-v4:19.0.+"
}
</code></pre>

I believe the <code>'19'</code> is supposed to be whatever your <code>compileSdkVersion</code>. If I'm wrong, it will tell you what it's supposed to be.

blocks|key|1591813|text|在我的例子中，问题是从sdk安装文件夹引用jar，将jar复制到项目的libs文件夹并添加到构建路径实际上解决了问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1591814|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|$]]

In my case the problem was referencing the jar from sdk installation folder, copying the jar to project's libs folder adding to build path actually resolved the issue.

blocks|key|4051803|text|对于那些使用gradle导入支持库的用户，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4051804|//+compat+libraries
compile+'com.android.support:support-v4:23.2.0'+//+v4
compile+'com.android.support:appcompat-v7:23.2.0'+//+v7
compile+'com.android.support:support-v13:23.2.0'+//v13|code-block|syntax|javascript|4051805|记得从配置中删除这个支持模块：‘all*.exclude+-v4|4051806|configurations+{
++++//all*.exclude+module:+'support-v4'
}|4051807|不过，...might只是我的一个虚拟错误:)|4051808|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For those importing the support libraries using gradle like this:

<pre><code>// compat libraries
compile 'com.android.support:support-v4:23.2.0' // v4
compile 'com.android.support:appcompat-v7:23.2.0' // v7
compile 'com.android.support:support-v13:23.2.0' //v13
</code></pre>

Remember to remove this all*.exclude module: 'support-v4' from configurations

<pre><code>configurations {
 //all*.exclude module: 'support-v4'
}
</code></pre>

...might have been a dummy mistake from my part though :)

blocks|key|1587676|text|在我使用Android+Studio的案例中，这个错误出现在一个正在工作的项目中，尽管到处闲逛，但它拒绝消失。最后，我通过在Gradle文件中添加一个空格字符来强制执行Gradle+Sync操作。Gradle+Sync立即修复了它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1587677|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|$]]

In my case with Android Studio, this error appeared in the middle of a working project and refused to disappear despite much fooling around. I finally forced a Gradle Sync operation by adding a single space character to a Gradle file. The Gradle Sync fixed it instantly.

blocks|key|1941202|text|克雷德的回答是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1941203|dependencies+{
++++compile+"com.android.support:support-v4:19.0.%2B"
}|code-block|syntax|javascript|1941204|对我很管用。但是(至少在我的例子中)+'19‘应该与compileSdkVersion匹配|1941205|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|$]]

craned's answer:

<pre><code>dependencies {
 compile "com.android.support:support-v4:19.0.+"
}
</code></pre>

worked for me. But (in my case at least) the '19' should match the compileSdkVersion

blocks|key|4051871|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4051872|添加依赖项|blockquote|4051873|4051874|4051875|dependencies+{+compile+'com.android.support:support-v4:%2B'}|code-block|syntax|javascript|4051876|4051877|更改构建工具|4051878|4051879|4051880|+dependencies+{++classpath+'com.android.tools.build:gradle:2.3.0'}|4051881|对我很管用。|4051882|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|V|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|W|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|X|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|Y|7|@]|8|@]|9|$]]|$1|F|3|G|4|H|6|Z|7|@]|8|@]|9|$I|J]]|$1|K|3|-4|4|5|6|10|7|@]|8|@]|9|$]]|$1|L|3|M|4|C|6|11|7|@]|8|@]|9|$]]|$1|N|3|-4|4|5|6|12|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|13|7|@]|8|@]|9|$]]|$1|P|3|Q|4|H|6|14|7|@]|8|@]|9|$I|J]]|$1|R|3|S|4|5|6|15|7|@]|8|@]|9|$]]|$1|T|3|-4|4|5|6|16|7|@]|8|@]|9|$]]]|U|$]]

<blockquote>
 add dependency
</blockquote>

<pre><code>dependencies { compile 'com.android.support:support-v4:+'}
</code></pre>

<blockquote>
 Change Build Tool 
</blockquote>

<pre><code> dependencies { classpath 'com.android.tools.build:gradle:2.3.0'}
</code></pre>

Worked for me.

blocks|key|4051901|text|Step-1:在AndroidStudio3.3以上版本中打开Project，等待工程加载完成。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4051902|Step-2:右键单击'app‘->+Refactor+->+Migrate+to+AnroidX|4051903|第3步:在下面的AndroidStudio+console中查看更改，然后单击“Do+Refactor”|4051904|这个问题将会得到解决。|4051905|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Step-1: Open Project in AndroidStudio3.3 or above, wait until loading of the project completes.

Step-2: Right click 'app' -> Refactor -> Migrate to AnroidX

Step-3: Review the changes in AndroidStudio console below and click 'Do Refactor'

The issue will be fixed.

blocks|key|4051932|text|在尝试以不同的方式调整build.gradle之后，最终在这里找到了解决方案：https://github.com/kmagiera/react-native-gesture-handler/issues/394#issuecomment-508358572|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4051933|简而言之，你可以用jetifier来解决这个问题|style|CODE|4051934|npm+install+--save-dev+jetifier++npx+jetify|4051935|在包文档中：|4051936|4051937|如果您使用带有未转换为AndroidX的本地Java代码的React+Native模块，并且您的应用程序是AndroidX，那么您可能需要这个。|blockquote|4051938|4051939|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/kmagiera/react-native-gesture-handler/issues/394#issuecomment-508358572^0|13|2I|0|0|9|8|0|0|17|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@$A|13|B|14|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|15|8|@$A|16|B|17|F|G]]|9|@]|C|$]]|$1|J|3|K|5|6|7|18|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|19|8|@]|9|@]|C|$]]|$1|M|3|N|5|O|7|1A|8|@]|9|@]|C|$]]|$1|P|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1C|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

After trying tweaking build.gradle different ways, ended up with solution found here:
<a href="https://github.com/kmagiera/react-native-gesture-handler/issues/394#issuecomment-508358572" rel="noreferrer">https://github.com/kmagiera/react-native-gesture-handler/issues/394#issuecomment-508358572</a>

in short - you can solve it with <code>jetifier</code>:

<code>npm install --save-dev jetifier
 npx jetify</code>

From the package docs:

<blockquote>
 If you use React Native modules with native Java code that isn't converted to AndroidX, and your app is AndroidX, you probably need this.
</blockquote>

Since the last update for android support libraries, I am having issues with importing LruCache. Eclipse, and now even android studio, keep saying that package android.support.v4.util does not exist.

I am using actionbarsherlock and it has included android support v4 and shows no errors. My application was working fine before this last SDK update. What has changed? How do I fix this?

Here is the error that shows:

<pre><code>java: /Users/amit/App/src/com/app/EMCache.java:5: package android.support.v4.util does not exist
java: /Users/amit/App/src/com/app/EMCache.java:9: cannot find symbol
symbol : class LruCache
location: class com.app.EMCache
java: /Users/amit/App/src/com/app/EMCache.java:20: cannot find symbol
symbol : class LruCache
location: class com.app.EMCache
</code></pre>

package android.support.v4.util does not exist

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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自从上次更新android支持库以来，我在导入LruCache时遇到了一些问题。Eclipse，甚至现在的android studio，一直在说android.support.v4.util包不存在。我正在使用actionbarsherlock，它包含了android支持v4，并且没有显示错误。在上一次SDK更新之前，...

问android.support.v4.util包不存在
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问android.support.v4.util包不存在EN