Android, simple Fragment sample

* Main ----------------------------------------------------------

***** xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    xmlns:tools="http://schemas.android.com/tools">

    <LinearLayout        android:orientation="horizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content">


        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="fragment1"            android:id="@+id/button1"            android:layout_weight="1"            android:onClick="selectFrag" />

        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="fragment2"            android:id="@+id/button2"            android:layout_weight="1"            android:onClick="selectFrag" />
    </LinearLayout>


    <fragment        android:id="@+id/fragment_place"        android:name="[Fragment1 class]"        android:layout_width="match_parent"        android:layout_height="match_parent"        tools:layout="@layout/fragment1" />


</LinearLayout>

***** java

public class MainActivity extends AppCompatActivity {

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void selectFrag(View view){
        Fragment fr;

        if(view == findViewById(R.id.button1)){
            fr = new Fragment1();
        }else {
            fr = new Fragment2();
        }

        FragmentManager fm = getFragmentManager();
        FragmentTransaction fragmentTransaction = fm.beginTransaction();
        fragmentTransaction.replace(R.id.fragment_place, fr);
        fragmentTransaction.commit();
    }
}

* Fragment1 ----------------------------------------------------------

***** fragment1.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ff9b9b">

</LinearLayout>

***** java

public class Fragment1 extends Fragment {
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        return inflater.inflate(R.layout.fragment1, container, false);
    }
}

* Fragment2 ----------------------------------------------------------

***** fragment2.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#7dd163">

</LinearLayout>

***** java

public class Fragment2 extends Fragment {
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        return inflater.inflate(R.layout.fragment2, container, false);
    }
}

ref :
http://yoo454.tistory.com/entry/Fragment-%EA%B0%84%EB%8B%A8-%EC%98%88%EC%A0%9C
http://novafactory.net/archives/1837