activity_main.xml

<RelativeLayout 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"

    >


    <RelativeLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        >


        <EditText

            android:id="@+id/textUser_ID"

            android:layout_width="150dp"

            android:layout_height="wrap_content"

            android:maxLength="20"

            android:maxLines="1"

            android:layout_marginBottom="10dp"

            android:layout_marginRight="10dp"

            android:hint="아이디"

            />


        <EditText

            android:id="@+id/textPassword"

            android:inputType="textPassword"

            android:layout_width="150dp"

            android:layout_height="wrap_content"

            android:layout_below="@id/textUser_ID"

            android:maxLength="40"

            android:maxLines="1"

            android:hint="비밀번호"

            />


        <Button

            android:id="@+id/buttonLogin"

            android:layout_width="wrap_content"

            android:layout_height="100dp"

            android:layout_alignBaseline="@id/textUser_ID"

            android:layout_toRightOf="@id/textUser_ID"

            android:onClick="onButtonLoginClicked"

            android:text="로그인" />


    </RelativeLayout>

</RelativeLayout>


MainActivity.java

public class MainActivity extends AppCompatActivity {

    public static final int REQUEST_CODE_ANOTHER = 1001;


    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }


    public void onButtonLoginClicked(View v) {

        Intent intent = new Intent(getBaseContext(), MenuActivity.class);

        startActivityForResult(intent, REQUEST_CODE_ANOTHER);


    }

}


activity_menu.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

>


<RelativeLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerHorizontal="true"

android:layout_centerVertical="true"

>


<Button

android:id="@+id/buttonCustomerMng"

android:layout_width="180dp"

android:layout_height="wrap_content"

android:text="고객 관리"

android:textSize="22dp"

android:layout_marginBottom="10dp"

/>


<Button

android:id="@+id/buttonSalesMng"

android:layout_width="180dp"

android:layout_height="wrap_content"

android:text="매출 관리"

android:textSize="22dp"

android:layout_below="@id/buttonCustomerMng"

android:layout_marginBottom="10dp"

/>


<Button

android:id="@+id/buttonProductMng"

android:layout_width="180dp"

android:layout_height="wrap_content"

android:text="상품 관리"

android:textSize="22dp"

android:layout_below="@id/buttonSalesMng"

/>


</RelativeLayout>


</RelativeLayout>


MenuActivity.java

public class MenuActivity extends Activity {


    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_menu);

    }

 

}


AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="net.dev.mission03">


    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />


                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>


        <activity android:name=".MenuActivity">

        </activity>

    </application>


</manifest>


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