blocks|key|695696|text|确保清单中的所有引用都已更新，以反映您的新包名称。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695697|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|$]]

make sure all references in your manifest have been updated to reflect your new package name.

blocks|key|695761|text|package="Application"应该为package="MyApplication"吗|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|695762|entityMap^0|0|L|O|N|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

Should <code>package="Application"</code> be <code>package="MyApplication"</code>?

blocks|key|911902|text|您需要更正android:name属性。在ClassNotFoundException+after+changing+app's+name+in+Android上提到的相同问题|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|911903|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/4407201/classnotfoundexception-after-changing-apps-name-in-android^0|5|C|L|1N|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]]]]

You need to correct the <code>android:name</code> attribute. Same problem mentioned at <a href="https://stackoverflow.com/questions/4407201/classnotfoundexception-after-changing-apps-name-in-android">ClassNotFoundException after changing app&#39;s name in Android</a>

blocks|key|911966|text|让我们假设，正如您在manifest中所述，您的项目基包实际上是Application。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|911967|如果您的MyApplication类在这个包中(该类的包声明是package+Application;)，那么androidManifest.xml中的application元素应该如下所示|911968|<application+android:name=".MyApplication"+[...]|code-block|syntax|javascript|911969|如果这个MyApplication类在Application.app包(package+Application.app;)中，那么您应该在清单中这样写：|911970|<application+android:name=".app.MyApplication"+[...]|911971|如果您没有扩展android.app.Application+(您没有MyApplication+extends+android.app.Application类)，只是想为您的应用程序设置一个名称，删除它的这个属性，因为它告诉编译器有一个应该实例化的Application扩展，而不是默认的android.app.Application。|911972|最后，如果第一个假设是错误的，并且您出于任何原因更改了androidManifest的manifest元素中的包声明，则撤消它或更新您的类以使其位于该包中。|911973|entityMap^0|A|8|W|B|0|4|D|V|K|1J|J|24|B|0|0|4|D|J|F|10|O|0|0|7|N|Z|19|3I|B|42|N|0|17|8|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1B|8|@$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1I|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1J|8|@$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]|$9|1O|A|1P|B|C]|$9|1Q|A|1R|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|1S|8|@$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]]|V|$]]

Let's assume, that your projects base package is really <code>Application</code>, as you've stated it in the <code>manifest</code>.

If your <code>MyApplication</code> class is inside this package (the package declaration of the class is <code>package Application;</code>), then the <code>application</code> element in your <code>androidManifest.xml</code> should look like 

<pre><code>&lt;application android:name=".MyApplication" [...]
</code></pre>

If this <code>MyApplication</code> class is inside the <code>Application.app</code> package (<code>package Application.app;</code>), then in the manifest you should write:

<pre><code>&lt;application android:name=".app.MyApplication" [...]
</code></pre>

If you didn't extend the <code>android.app.Application</code> (you don't have a <code>MyApplication extends android.app.Application</code> class), just wanted to set a name to your application, remove it this attribute, since it says to the compiler that there is an <code>Application</code> extension that should be instantiated instead of the default <code>android.app.Application</code>.

And finally, if the first assumption is wrong, and you've changed for any reason the package declaration in your androidManifest's <code>manifest</code> element, undo it or update your classes to be in that package.

blocks|key|912035|text|这个答案对我很有帮助，如果你正在使用SDK+17%2B+https://stackoverflow.com/a/10176048/46459，基本上就是把你的lib重命名为libs。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|912036|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/10176048/46459^0|Q|16|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

this answer helped me, basically rename your lib to libs if you're using SDK 17+
<a href="https://stackoverflow.com/a/10176048/46459">https://stackoverflow.com/a/10176048/46459</a>

blocks|key|695988|text|在我的例子中，我将JAVA编译器的遵从性级别从1.7改为1.6，问题就解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|695989|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, I've change JAVA compiler compliance level from 1.7 to 1.6 and the problem was solved.

blocks|key|912245|text|简单地清理项目并重新构建。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|912246|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|$]]

Simple clean the project and rebuild.

blocks|key|912288|text|对我来说，问题在于即时运行。禁用它解决了问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|912289|如果我找到重新启用并使其工作的解决方案，我将更新。|912290|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 me, the issue was with instant-run. Disabling it solved the issue.

Will update if I find a solution for re-enabling and making it work.

blocks|key|696236|text|对我来说，这个问题是由于类的访问级别造成的，它必须是公共的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|696237|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|$]]

For me the issue was due to access level of the class, it has to be public

I renamed my package and now I get this strange error:

<pre class="lang-none prettyprint-override"><code>Unable to instantiate application
app.MyApplication: java.lang.ClassNotFoundException: 
app.MyApplication in loaderdalvik.system.PathClassLoader
</code></pre>

The <code>MyApplication</code> class is in <code>Application/app</code>. The Manifest says:

<pre class="lang-xml prettyprint-override"><code>&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 package="Application"&gt;
</code></pre>

<pre class="lang-xml prettyprint-override"><code>&lt;application 
 android:label="AGG"
 android:name="app.MyApplication"...
</code></pre>

I tried restart, clean built. Is doesn't work on an emulator nor on a real device.

What on Earth is going on?

Android: Unable to instantiate application

编译器

我重命名了我的包，现在我得到了这个奇怪的错误：Unable to instantiate applicationapp.MyApplication: java.lang.ClassNotFoundException: app.MyApplication in loaderdalvik.system.PathClassL...

问Android:无法实例化应用程序
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