MainActivity.java
public class MainActivity extends AppCompatActivity {
private FragmentManager fragmentManager;
private Fragment_Main fragment_main;
private Fragment_MyPage fragment_my_page;
private FragmentTransaction fragmentTransaction;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fragmentManager = getSupportFragmentManager();
fragment_main = new Fragment_Main();
fragment_my_page = new Fragment_MyPage();
fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.frameLayout, fragment_my_page).commitNowAllowingStateLoss();
}
public void MenuClickHandler(View v){
fragmentManager = getSupportFragmentManager();
fragmentTransaction = fragmentManager.beginTransaction();
switch (v.getId()){
case R.id.btn_main:
fragmentTransaction.replace(R.id.frameLayout, fragment_main).commitNowAllowingStateLoss();
break;
case R.id.btn_my_page:
fragmentTransaction.replace(R.id.frameLayout, fragment_my_page).commitNowAllowingStateLoss();
break;
}
}
}
activity_main.xml
<FrameLayout
android:id="@+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@id/linearLayout"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
</FrameLayout>
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<Button
android:id="@+id/btn_main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="MenuClickHandler"
android:layout_weight="1"
android:text="Main" />
<Button
android:id="@+id/btn_my_page"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="MenuClickHandler"
android:layout_weight="1"
android:text="MyPage" />
</LinearLayout>
각 Fragment Java
public class Fragment_이름 extends Fragment {
@Nullable
@Override
public View onCreateView(
@NonNull LayoutInflater inflater,
@Nullable ViewGroup container,
@Nullable Bundle savedInstanceState
){
return inflater.inflate(R.layout.fragment_이름, container, false);
}
}
테스트용 Fragment Layout xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="This" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="is" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="a" />
<Button
android:id="@+id/button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Main Page" />
</LinearLayout>
</LinearLayout>
결과물
