Intent 화면전환

main.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">

    <EditText
        android:id="@+id/et_test"
        android:layout_width="200dp"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/btn_move"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="이동"/>

</LinearLayout>

 

 

sub.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=".SubActivity">


    <TextView
        android:id="@+id/tv_sub"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30sp"
        android:text="서브 액티비티 도착"/>

</LinearLayout>

 

main.activity

public class MainActivity extends AppCompatActivity {
    private Button btn_move;
    private EditText et_test;
    private String str;

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

        et_test = findViewById(R.id.et_test);


        btn_move = findViewById(R.id.btn_move);
        btn_move.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                str = et_test.getText().toString();
                Intent intent = new Intent(getApplicationContext(), SubActivity.class);
                intent.putExtra("move",str);
                startActivity(intent);      //액티비티 이동
            }
        });

    }
}

 

sub.activity

public class SubActivity extends AppCompatActivity {

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

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 결과 값