Eu criei a classe
public class MainActivity extends Activity {
}
e inclui as tags no Manifests
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MENU"/>
<category android:name="android.intent.action.LAUNCHER"/>
</intent-filter>
</activity>mas ao executar ocorre o erro
Error running 'app': Default Activity not found
