프로필 화면 띄우기 _ Toast, EditText

Chap4. 인터페이스 기초 01.View
패키지명 : MyApplication

• 해야할 것

1. ImageView - size:300/300dp
2. EditText - id:etName
3. EditText - id:etPhone
4. btnHello클릭 시 다음 문장을 Toast로 출력
5. btnExit 클릭 시 앱 종료

1. ImageView - size:300/300dp

2. EditText - id:etName

3. EditText - id:etPhone

2번과 같은 방법.

4. btnHello클릭 시 다음 문장을 Toast로 출력

문장 : 안녕하세요, 저는 XXX(etName 입력값) 입니다. 전화번호는 XXX(etPhone 입력값) 입니다.

MainActivity에서 버튼 클릭 메소드를 만든다.

public void onMyBtnClick(View v) {
        EditText editText1 = (EditText)findViewById(R.id.etName);
        EditText editText2 = (EditText)findViewById(R.id.etPhone);

        String text = "안녕하세요, 저는 " + editText1.getText().toString() + "입니다."
                + "전화번호는 " + editText2.getText().toString() + "입니다.";
        Toast.makeText(this, text, Toast.LENGTH_SHORT).show();
    }

버튼을 만들고 id를 btnHello로 설정해준다.
onClick부분에 onMyBtnClick 메소드를 연결해준다. (메소드 이름은 자유)

• 실행결과
  
  
  

5. btnExit 클릭 시 앱 종료

finish() 사용 : Activity의 멤버 메소드로 Activity 종료 시 사용한다.
MainActivity에 메소드를 만들어주고

public void onMyExitClick(View v)  {
        finish();
    }

4번과 동일하게 btnExit의 onClick에 메소드를 연결해주면 된다.

• 실행결과
  

전체코드

• MainActivity.java

package ddwucom.mobile.test0426;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

    public void onMyBtnClick(View v) {
        EditText editText1 = (EditText)findViewById(R.id.etName);
        EditText editText2 = (EditText)findViewById(R.id.etPhone);

        String text = "안녕하세요, 저는 " + editText1.getText().toString() + "입니다."
                + "전화번호는 " + editText2.getText().toString() + "입니다.";
        Toast.makeText(this, text, Toast.LENGTH_SHORT).show();
    }

    public void onMyExitClick(View v)  {
        finish();
    }

}

• activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Profile"
        android:textColor="#000000"
        android:textSize="36dp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Photo"
        android:textSize="18dp"
        android:textColor="#000000"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView2"
        app:layout_constraintVertical_bias="0.0" />

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="300dp"
        android:layout_height="300dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView"
        app:layout_constraintVertical_bias="0.0"
        app:srcCompat="@drawable/goodluck"
        tools:srcCompat="@drawable/goodluck" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Name"
        android:textColor="#000000"
        android:textSize="18dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView"
        app:layout_constraintVertical_bias="0.0" />

    <EditText
        android:id="@+id/etName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="이름을 입력하시오"
        android:inputType="textCapWords"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView3"
        app:layout_constraintVertical_bias="0.0">

    </EditText>

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Phone"
        android:textColor="#000000"
        android:textSize="18dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/etName"
        app:layout_constraintVertical_bias="0.0" />

    <EditText
        android:id="@+id/etPhone"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="전화번호를 입력하시오"
        android:inputType="phone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView4"
        app:layout_constraintVertical_bias="0.0">

    </EditText>

    <Button
        android:id="@+id/btnHello"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="인삿말"
        android:onClick="onMyBtnClick"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/etPhone"
        app:layout_constraintVertical_bias="0.0" />

    <Button
        android:id="@+id/btnExit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="종료"
        android:onClick="onMyExitClick"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btnHello"
        app:layout_constraintVertical_bias="0.0" />
</androidx.constraintlayout.widget.ConstraintLayout>