Inflearn Community Q&A
아래댓글대로 android:id="@+id/content_main"도추가했는데...
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아레글대로 content_main.xml에다가 android:id="@+id/content_main" 추가했는데
mainactiivity.java 부분에서
FirstLayout이랑 SecondLayout 부분 때문에 에러가생기는것 같아요
어떻게 해야 될까요?
if (id == R.id.nav_first_layout) {
manager.beginTransaction().replace(R. id.content_main. new FirstLayout()) .commit();
} else if (id == R.id.nav_second_layout) {
manager.beginTransaction().replace(R. id.content_main. new SecondLayout()) .commit();
} else if (id == R.id.nav_share) {
android
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