안드로이드 프래그먼트 간 데이터 전달

번들을 사용하여 프래그먼트 간 데이터를 전달하는 간단한 예제입니다.

 

 

 

 

 

 

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activity.xml

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

    <FrameLayout
        android:id="@+id/frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </FrameLayout>
</LinearLayout>

 

 

fragment_1.xml

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

    <EditText
        android:id="@+id/edit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="15dp"
        android:hint="이름을 쓰세요"
        android:textSize="30sp"/>

    <Button
        android:id="@+id/btn"
        android:layout_width="100dp"
        android:layout_marginLeft="10dp"
        android:layout_height="wrap_content"
        android:text="확인" />
</LinearLayout>

 

 

fragment_2.xml

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

    <TextView
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:text="이름"
        android:textSize="30sp"/>

</LinearLayout>

 

 

 

 

 

 

 

---

 

MainActivity.java

public class MainActivity extends AppCompatActivity {

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


        //프래그먼트1 연결
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        Fragment1 fragment1 = new Fragment1();
        transaction.replace(R.id.frame, fragment1);
        transaction.commit();


    }
}

 

 

Fragment1.java

public class Fragment1 extends Fragment {

    private View view;
    private Button btn;
    EditText edit;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.fragment_1, container, false);

        edit = view.findViewById(R.id.edit);
        btn = view.findViewById(R.id.btn);


        btn.setOnClickListener(new View.OnClickListener() { // 프래그먼트2로 이동
            @Override
            public void onClick(View view) {
                Bundle bundle = new Bundle(); // 번들을 통해 값 전달
                bundle.putString("name",edit.getText().toString());//번들에 넘길 값 저장
                FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
                Fragment2 fragment2 = new Fragment2();//프래그먼트2 선언
                fragment2.setArguments(bundle);//번들을 프래그먼트2로 보낼 준비
                transaction.replace(R.id.frame, fragment2);
                transaction.commit();
            }
        });


        return view;
    }


}

 

 

Fragment2.java

public class Fragment2 extends Fragment {

    private View view;
    private TextView tv_name;
    private String name;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.fragment_2, container, false);

        tv_name = view.findViewById(R.id.tv_name);

        if (getArguments() != null)
        {
            name = getArguments().getString("name"); // 프래그먼트1에서 받아온 값 넣기
            tv_name.setText(name);
        }


        return view;
    }


}