<p>3번쨰 액티비에 부분 manifest에서 &lt;activity android:name=".MainActivity"&gt;&nbsp; 에 밑줄에러가 나오는데 뭐가 문제인지 모르겠어요 살려주세요&nbsp; 전체 코드는 &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"&nbsp; &nbsp; &nbsp;package="com.example.classs"&gt;&nbsp; &nbsp; &nbsp; &lt;application&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;android:allowBackup="true"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;android:icon="@mipmap/ic_launcher"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;android:label="@string/app_name"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;android:roundIcon="@mipmap/ic_launcher_round"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;android:supportsRtl="true"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;android:theme="@style/Theme.Classs"&gt;&nbsp; &nbsp; &nbsp;&lt;activity android:name=".MainActivity"&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;intent-filter&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;action android:name="android.intent.action.MAIN" /&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;category android:name="android.intent.category.LAUNCHER" /&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/intent-filter&gt;&nbsp; &nbsp; &nbsp;&lt;/activity&gt;&nbsp; &nbsp; &nbsp;&lt;/application&gt;&nbsp; &nbsp; &lt;/manifest&gt; 입니다.<img title="111.PNG" src="https://cdn.inflearn.com/public/files/posts/f66300dd-eb6b-4d67-9060-33ce929a711f/111.PNG" alt="" width="1280" height="876" /></p>

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