blocks|key|2789567|text|只有当您的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2789568|最低版本低于API+11级时，才需要Api支持库。否则，您不需要为Api+11或更高版本的项目添加支持库。|blockquote|2789569|2789570|2789571|android-support-v4.jar:支持android.app类，以帮助开发android+API+level+4或更高版本的应用程序。以便您能够使您应用程序与backword兼容，|offset|length|style|BOLD|CODE|2789572|android-support-v7.jar它是最近在最新的支持库更新中添加的。ActionBar允许实现动作栏用户界面设计模式回到Android2.1(API7级)和更高版本。使用这个类要求您通过扩展新的ActionBarActivity类来实现您的活动。|2789573|2789574|如果我想在我的应用程序中添加appcompat操作栏，我需要同时添加android-support-v7-appcompat.jar和android-support-v4.jar，还是只添加android-support-v7-appcompat.jar。|2789575|2789576|2789577|是的，如果你想使用它，你需要添加这两个库的引用。|2789578|2789579|+android-support-v13.jar有appcompat吗？|2789580|2789581|2789582|不，它包括FragmentCompat，因此如果在版本13之后添加了一些片段功能，那么您可以使其向后兼容Api级别11。因此，针对API11或更高版本应用程序可以使用在较新版本上添加的功能。|2789583|entityMap^0|0|0|0|0|0|N|P|B|0|0|M|2V|H|0|0|0|0|0|0|0|0|0|0|5|E|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|16|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|19|8|@$I|1A|J|1B|K|L]|$I|1C|J|1D|K|M]]|9|@]|A|$]]|$1|N|3|O|5|6|7|1E|8|@$I|1F|J|1G|K|L]|$I|1H|J|1I|K|M]]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1K|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1N|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]|$1|X|3|Y|5|D|7|1P|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|1S|8|@$I|1T|J|1U|K|L]]|9|@]|A|$]]|$1|13|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]]|14|$]]

<blockquote>
 Support library only required if your minimum sdk version is less than API Level 11. otherwise you do not need to add support library to your project for Api Level 11 or Greater.
</blockquote>

android-support-v4.jar: Support <code>android.app</code> classes to assist with development of applications for android API level 4 or later. So that you will able to make your application backword compatible,

android-support-v7.jar It is recently added in latest support library updation. ActionBar to allow implementation of the action bar user interface design pattern back to Android 2.1 (API level 7) and higher. Use of this class requires that you implement your activity by extending the new <code>ActionBarActivity</code> class.

<blockquote>
 If I want to add appcompat action bar in my application do I need to
 add both android-support-v7-appcompat.jar and android-support-v4.jar
 or only android-support-v7-appcompat.jar.
</blockquote>

Yes you need to add reference of both libraries if you want to use it.

<blockquote>
 does android-support-v13.jar has appcompat?
</blockquote>

No, It includes FragmentCompat so that if some of the Fragment feature add added after version 13 than you can make it backword compatible to Api level 11. so that Application targeting API 11 or greater can use feature which added on newer versions.

blocks|key|177550|text|此答案与其版本为>=+26.0.0的支持库的客户端相关：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|177551|177552|+Caution：从support+Library+release+26.0.0+(2017年7月)开始，大多数支持库的最低支持API级别已增加到大多数库软件包的Android+4.0+(API+level+14)。|blockquote|offset|length|style|BOLD|177553|177554|例如，对于26.0.0及更高版本的版本的支持库，support-v4和support-v7软件包都支持最低14的API级别。|177555|177556|有关详细信息，请参阅Support+Library+-+Version+Support+and+Package+Names。|177557|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/topic/libraries/support-library/index.html#api-versions^0|0|0|1|7|29|Q|0|0|N|13|0|0|0|1Q|A|1F|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Z|8|@$F|10|G|11|H|I]|$F|12|G|13|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|15|8|@$F|16|G|17|H|I]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|19|8|@$F|1A|G|1B|H|I]]|9|@$F|1C|G|1D|1|1E]]|A|$]]|$1|P|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]]]

This answer is relevant for clients of support libraries which their version is &gt;= 26.0.0:
<blockquote>
Caution: Starting with Support Library release 26.0.0 (July 2017), the minimum supported API level across most support libraries has increased to Android 4.0 (API level 14) for most library packages.
For example, the support-v4 and the support-v7 package both support a minimum API level of 14, for releases of the Support Library from 26.0.0 and higher.
</blockquote>
For more information, see <a href="https://developer.android.com/topic/libraries/support-library/index.html#api-versions" rel="nofollow noreferrer">Support Library - Version Support and Package Names</a>.

blocks|key|2789625|text|什么是支持库？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2789626|支持库是代码库(类的集合)，这使得新添加的功能可以与旧设备一起使用。|2789627|例如，在API+21+(Android+5.0+-+Lolipop)中引入了Material+Design，但是|2789628|Androidv7支持库使其可用于7(Android2.1.x+-Eclair)及更高版本。|offset|length|style|BOLD|2789629|什么是不同的支持库？|2789630|一些主要的支持库包括|2789631|2789632|V4支持库|unordered-list-item|2789633|2789634|2789635|V7支持库|2789636|2789637|2789638|V8支持库|2789639|2789640|2789641|v13支持库|2789642|2789643|在v7支持库中，7代表什么？|2789644|这意味着这个库具有专为API+level+7及更高版本设计的功能。V4+(包含针对API4及更高版本的特性)等也是如此。|2789645|v7支持库和v7应用程序库有什么不同？|2789646|包括我在内，很少有人会对这两个术语感到困惑。实际上，v7+appcompat库是v7支持库的一部分。v7支持库主要用于支持API7及更高版本的材料设计和ActionBar设计模式。|2789647|V7可以分为更多的子类别|2789648|2789649|v7+appcompat库|2789650|2789651|2789652|v7+cardView库|2789653|2789654|2789655|v7+recyclerView库|2789656|2789657|2789658|v7调色库等|2789659|2789660|v7+appcompat库具有以下关键类:+ActionBar、ActionBarActivity、ShareActionProvider。|2789661|因此，添加，|2789662|com.android.support:appcompat-v7:21.0.%2B|code-block|syntax|javascript|2789663|依赖项在gradle文件中，导入上述类。|2789664|奖金|2789665|2789666|其他支持库|blockquote|2789667|2789668|2789669|Multidex支持库(用于创建具有超过65k方法的应用程序)|2789670|Android+Leanback支持库(一个为v17+TV提供重要部件的支持库)|2789671|相关链接|2789672|2789673|Support+Library+Features|2789674|Support+Library+Packages|2789675|Support+Library+Features+Guide|2789676|What+is+Multidex+and+what+is+the+use+of+Multidex+Support+Library?|2789677|2789678|entityMap|0|LINK|mutability|MUTABLE|url|http://www.androiddocs.com/tools/support-library/features.html|1|https://developer.android.com/topic/libraries/support-library/packages.html|2|https://developer.android.com/topic/libraries/support-library/features.html|3|https://stackoverflow.com/questions/33588459/what-is-android-multidex/46904835#46904835^0|0|0|0|H|T|0|0|A|0|0|A|0|0|0|5|0|0|0|0|5|0|0|0|0|5|0|0|0|0|6|0|0|0|E|0|0|1O|0|0|J|0|0|2I|0|0|C|0|0|0|D|0|0|0|0|C|0|0|0|0|G|0|0|0|0|6|0|0|0|1Y|0|0|6|0|0|0|K|0|0|2|0|0|0|5|0|0|0|0|V|0|0|14|0|0|4|0|0|0|O|0|O|0|0|0|O|0|O|1|0|0|U|0|U|2|0|0|1T|0|1T|3|0|0^^$0|@$1|2|3|4|5|6|7|39|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|3A|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|3B|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|3C|8|@$H|3D|I|3E|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|3F|8|@$H|3G|I|3H|J|K]]|9|@]|A|$]]|$1|N|3|O|5|6|7|3I|8|@$H|3J|I|3K|J|K]]|9|@]|A|$]]|$1|P|3|-4|5|6|7|3L|8|@]|9|@]|A|$]]|$1|Q|3|R|5|S|7|3M|8|@$H|3N|I|3O|J|K]]|9|@]|A|$]]|$1|T|3|-4|5|6|7|3P|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|3Q|8|@]|9|@]|A|$]]|$1|V|3|W|5|S|7|3R|8|@$H|3S|I|3T|J|K]]|9|@]|A|$]]|$1|X|3|-4|5|6|7|3U|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|3V|8|@]|9|@]|A|$]]|$1|Z|3|10|5|S|7|3W|8|@$H|3X|I|3Y|J|K]]|9|@]|A|$]]|$1|11|3|-4|5|6|7|3Z|8|@]|9|@]|A|$]]|$1|12|3|-4|5|6|7|40|8|@]|9|@]|A|$]]|$1|13|3|14|5|S|7|41|8|@$H|42|I|43|J|K]]|9|@]|A|$]]|$1|15|3|-4|5|6|7|44|8|@]|9|@]|A|$]]|$1|16|3|17|5|6|7|45|8|@$H|46|I|47|J|K]]|9|@]|A|$]]|$1|18|3|19|5|6|7|48|8|@$H|49|I|4A|J|K]]|9|@]|A|$]]|$1|1A|3|1B|5|6|7|4B|8|@$H|4C|I|4D|J|K]]|9|@]|A|$]]|$1|1C|3|1D|5|6|7|4E|8|@$H|4F|I|4G|J|K]]|9|@]|A|$]]|$1|1E|3|1F|5|6|7|4H|8|@$H|4I|I|4J|J|K]]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|4K|8|@]|9|@]|A|$]]|$1|1H|3|1I|5|S|7|4L|8|@$H|4M|I|4N|J|K]]|9|@]|A|$]]|$1|1J|3|-4|5|6|7|4O|8|@]|9|@]|A|$]]|$1|1K|3|-4|5|6|7|4P|8|@]|9|@]|A|$]]|$1|1L|3|1M|5|S|7|4Q|8|@$H|4R|I|4S|J|K]]|9|@]|A|$]]|$1|1N|3|-4|5|6|7|4T|8|@]|9|@]|A|$]]|$1|1O|3|-4|5|6|7|4U|8|@]|9|@]|A|$]]|$1|1P|3|1Q|5|S|7|4V|8|@$H|4W|I|4X|J|K]]|9|@]|A|$]]|$1|1R|3|-4|5|6|7|4Y|8|@]|9|@]|A|$]]|$1|1S|3|-4|5|6|7|4Z|8|@]|9|@]|A|$]]|$1|1T|3|1U|5|S|7|50|8|@$H|51|I|52|J|K]]|9|@]|A|$]]|$1|1V|3|-4|5|6|7|53|8|@]|9|@]|A|$]]|$1|1W|3|1X|5|6|7|54|8|@$H|55|I|56|J|K]]|9|@]|A|$]]|$1|1Y|3|1Z|5|6|7|57|8|@$H|58|I|59|J|K]]|9|@]|A|$]]|$1|20|3|21|5|22|7|5A|8|@]|9|@]|A|$23|24]]|$1|25|3|26|5|6|7|5B|8|@$H|5C|I|5D|J|K]]|9|@]|A|$]]|$1|27|3|28|5|6|7|5E|8|@$H|5F|I|5G|J|K]]|9|@]|A|$]]|$1|29|3|-4|5|6|7|5H|8|@]|9|@]|A|$]]|$1|2A|3|2B|5|2C|7|5I|8|@$H|5J|I|5K|J|K]]|9|@]|A|$]]|$1|2D|3|-4|5|6|7|5L|8|@]|9|@]|A|$]]|$1|2E|3|-4|5|6|7|5M|8|@]|9|@]|A|$]]|$1|2F|3|2G|5|6|7|5N|8|@$H|5O|I|5P|J|K]]|9|@]|A|$]]|$1|2H|3|2I|5|6|7|5Q|8|@$H|5R|I|5S|J|K]]|9|@]|A|$]]|$1|2J|3|2K|5|6|7|5T|8|@$H|5U|I|5V|J|K]]|9|@]|A|$]]|$1|2L|3|-4|5|6|7|5W|8|@]|9|@]|A|$]]|$1|2M|3|2N|5|S|7|5X|8|@$H|5Y|I|5Z|J|K]]|9|@$H|60|I|61|1|62]]|A|$]]|$1|2O|3|2P|5|S|7|63|8|@$H|64|I|65|J|K]]|9|@$H|66|I|67|1|68]]|A|$]]|$1|2Q|3|2R|5|S|7|69|8|@$H|6A|I|6B|J|K]]|9|@$H|6C|I|6D|1|6E]]|A|$]]|$1|2S|3|2T|5|S|7|6F|8|@$H|6G|I|6H|J|K]]|9|@$H|6I|I|6J|1|6K]]|A|$]]|$1|2U|3|-4|5|6|7|6L|8|@]|9|@]|A|$]]|$1|2V|3|-4|5|6|7|6M|8|@]|9|@]|A|$]]]|2W|$2X|$5|2Y|2Z|30|A|$31|32]]|33|$5|2Y|2Z|30|A|$31|34]]|35|$5|2Y|2Z|30|A|$31|36]]|37|$5|2Y|2Z|30|A|$31|38]]]]

<h2>What is a support library?</h2>
Support libraries are code libraries(Collection of classes) which makes a newly added feature to work with the older devices. 
For example, Material Design was introduced in API 21 (Android 5.0 - Lolipop) but 
the v7-support library makes it available for API 7 (Android 2.1.x -Eclair) and higher.
<h2>What are different support libraries?</h2>
Some of the main support libraries are
<ul>
<li>V4 Support library
</li>
<li>V7 Support library
</li>
<li>V8 Support library
</li>
<li>v13 Support library
</li>
</ul>
<h2>What does 7 stand for in v7 Support Library?</h2>
It means this library has features designed to be used with API level 7 and higher. Same goes with V4 (contains features meant for API 4 and higher) and so on.
<h2>Difference between v7 Support library and v7 appcompat library?</h2>
Few people including me get confused with these two terms. Actually, v7 appcompat library is a part of v7 Support library. v7 support library was mainly developed to support Material design and ActionBar design pattern for API 7 and higher. 
V7 can be categorized into more sub categories
<ul>
<li>v7 appcompat library
</li>
<li>v7 cardView library
</li>
<li>v7 recyclerView library
</li>
<li>v7 pallete library etc
</li>
</ul>
v7 appcompat library has following key classes ActionBar, ActionBarActivity, ShareActionProvider.
So adding,
<pre><code>com.android.support:appcompat-v7:21.0.+
</code></pre>
dependency in your gradle file, imports the above-mentioned classes.
<h1>Bonus</h1>
<blockquote>
Other support libraries
</blockquote>
Multidex Support Library (For creating apps with more than 65k methods) 
v17 Leanback support Library (A Support library which provides important widgets for Android TV)
<h3>Relevant links</h3>
<ul>
<li><a href="http://www.androiddocs.com/tools/support-library/features.html" rel="noreferrer">Support Library Features</a></li>
<li><a href="https://developer.android.com/topic/libraries/support-library/packages.html" rel="noreferrer">Support Library Packages</a></li>
<li><a href="https://developer.android.com/topic/libraries/support-library/features.html" rel="noreferrer">Support Library Features Guide</a></li>
<li><a href="https://stackoverflow.com/questions/33588459/what-is-android-multidex/46904835#46904835">What is Multidex and what is the use of Multidex Support Library?</a></li>
</ul>

I wanted to know the difference between android-support-v4.jar
and android-support-v7-appcompat.jar. If I want to add appcompat Action Bar in my application do I need to add both android-support-v7-appcompat.jar and android-support-v4.jar or only android-support-v7-appcompat.jar.

Also, does android-support-v13.jar has appcompat?

Difference between android-support-v7-appcompat and android-support-v4

Android

我想知道android-support-v4.jar和android-support-v7-appcompat.jar.之间的区别如果我想在我的应用程序中添加appcompat Action Bar，我需要同时添加android-support-v7-appcompat.jar和android-support-v4.j...

问android-support-v7-appcompat与android-support-v4的区别
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