화면 연동 로그캣 오류 도저히 모르겟어요 도와주세요 ㅜ

Question

<메니페스트 구문입니다>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.bfood"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="19"
        android:targetSdkVersion="19" />
    <application

        android:theme="@android:style/Theme.NoTitleBar" >
        <activity
            android:name="com.example.bfood.intro.java"  />
            <activity android:name="com.example.bfood.first.java" />
            <activity android:name="com.example.bfood.MainActivity.java" >

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
      
          <activity android:name="com.example.bfood.nextd"  />
              <activity android:name="com.example.bfood.activity_main"  />
                  <activity android:name="com.example.bfood.open"  />
    </application>

</manifest>

로그캣 맨 처음 오류입니다

FATAL EXCEPTION: main
Process: com.example.bfood, PID: 1394
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.bfood/com.example.bfood.MainActivity.java}: java.lang.ClassNotFoundException: Didn't find class "com.example.bfood.MainActivity.java" on path: DexPathList[[zip file "/data/app/com.example.bfood-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.bfood-2, /system/lib]]
 

도저히 무슨 말인지 모르겠네요 찾아봐도 모르겠고 상세하게 답변 부탁드립니다

Answer 1

책을 좀 읽으셔야 겠는데요..

머죠 이건

 

<activity
            android:name="com.example.bfood.intro.java"  />
            <activity android:name="com.example.bfood.first.java" />
            <activity android:name="com.example.bfood.MainActivity.java" >

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

Answer 2

아래 사이트에서 문제점3번 참고하시면 되겠어요~

여기서는 타겟에뮬레이터와 프로젝트의 안드로이드 버전 차이라고 하네용? ㅎㅎ

http://blog.naver.com/khl1154?Redirect=Log&logNo=120207801615