강의 링크 : https://youtu.be/f7_ORwhSx2E
1.
처음 생성하는 액티비티 이름을 LoginActivity 로 하여 프로젝트를 생성
2.
라이브러리 추가
GradleScripts/ build.gradle(Module:app) |
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.example.han.management"
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
compile 'com.android.volley:volley:1.0.0'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}
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volley는 http(네트워크 통신)과 관련된 라이브러리.
3.
액티비티 추가.
기존에 LoginActivity 에 더하여 MainActivity, RegisterActivity 두개를 추가 & 화면구성(강의에서는 relative layout으로 만들지만, 안드로이드 스튜디오가 constraintlayout으로 자동 생성하길래 그냥 그대로 만듬)
activity_login.xml |
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.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="com.example.han.member.LoginActivity">
<EditText
android:id="@+id/textView"
android:layout_width="353dp"
android:layout_height="46dp"
android:ems="10"
android:hint="ID"
android:inputType="textPersonName"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="16dp" />
<Button
android:id="@+id/loginButton"
android:layout_width="354dp"
android:layout_height="wrap_content"
android:layout_marginTop="72dp"
android:text="로그인"
app:layout_constraintTop_toBottomOf="@+id/textView"
tools:layout_editor_absoluteX="15dp" />
<EditText
android:id="@+id/passwordText"
android:layout_width="349dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="password"
android:inputType="textPassword"
app:layout_constraintTop_toBottomOf="@+id/textView"
tools:layout_editor_absoluteX="16dp" />
<TextView
android:id="@+id/registerButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="회원가입"
android:textAppearance="@style/TextAppearance.AppCompat.Button"
app:layout_constraintTop_toBottomOf="@+id/loginButton"
tools:layout_editor_absoluteX="163dp" />
</android.support.constraint.ConstraintLayout>
|
activity_main.xml |
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.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="com.example.han.member.MainActivity">
<TextView
android:id="@+id/welcomeMessage"
android:layout_width="353dp"
android:layout_height="51dp"
android:text="TextView"
android:textAppearance="@style/TextAppearance.AppCompat.Display1"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="16dp" />
<TextView
android:id="@+id/textView"
android:layout_width="354dp"
android:layout_height="35dp"
android:layout_marginTop="8dp"
android:text="아이디"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintTop_toBottomOf="@+id/welcomeMessage"
tools:layout_editor_absoluteX="16dp" />
<TextView
android:id="@+id/passwordText"
android:layout_width="353dp"
android:layout_height="51dp"
android:layout_marginTop="8dp"
android:text="TextView"
android:textAppearance="@style/TextAppearance.AppCompat.Display1"
app:layout_constraintTop_toBottomOf="@+id/textView2"
tools:layout_editor_absoluteX="16dp" />
<TextView
android:id="@+id/idText2"
android:layout_width="353dp"
android:layout_height="51dp"
android:layout_marginTop="8dp"
android:text="TextView"
android:textAppearance="@style/TextAppearance.AppCompat.Display1"
app:layout_constraintTop_toBottomOf="@+id/textView"
tools:layout_editor_absoluteX="16dp" />
<TextView
android:id="@+id/textView2"
android:layout_width="346dp"
android:layout_height="35dp"
android:layout_marginTop="8dp"
android:text="비밀번호"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintTop_toBottomOf="@+id/idText2"
tools:layout_editor_absoluteX="16dp" />
</android.support.constraint.ConstraintLayout>
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activity_register.xml |
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.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="com.example.han.member.RegisterActivity">
<EditText
android:id="@+id/textView"
android:layout_width="358dp"
android:layout_height="44dp"
android:ems="10"
android:hint="id"
android:inputType="textPersonName"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="18dp" />
<EditText
android:id="@+id/passwordText"
android:layout_width="354dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="pw"
android:inputType="textPersonName"
app:layout_constraintTop_toBottomOf="@+id/textView"
tools:layout_editor_absoluteX="16dp" />
<EditText
android:id="@+id/nameText"
android:layout_width="353dp"
android:layout_height="48dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="name"
android:inputType="textPersonName"
app:layout_constraintTop_toBottomOf="@+id/passwordText"
tools:layout_editor_absoluteX="16dp" />
<EditText
android:id="@+id/ageText"
android:layout_width="351dp"
android:layout_height="45dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="10"
android:inputType="textPersonName"
android:text=" "
app:layout_constraintTop_toBottomOf="@+id/nameText"
tools:layout_editor_absoluteX="16dp" />
<Button
android:id="@+id/registerButton"
android:layout_width="355dp"
android:layout_height="41dp"
android:layout_marginTop="20dp"
android:text="회원가입"
app:layout_constraintTop_toBottomOf="@+id/ageText"
tools:layout_editor_absoluteX="15dp" />
</android.support.constraint.ConstraintLayout>
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강의 링크 : https://youtu.be/5ZMVRKis1eI
- 각 액티비티 사이의 연결을 다룸
LoginActivity |
package com.example.han.member;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class LoginActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
EditText idText = (EditText)findViewById(R.id.idText);
EditText passwordText = (EditText)findViewById(R.id.passwordText);
Button loginButton = (Button)findViewById(R.id.loginButton);
TextView registerButton = (TextView)findViewById(R.id.registerButton);
registerButton.setOnClickListener(new View.OnClickListener() {
@Override
// 클릭 시 registerIntent 를 통해서 registerActivity를 실행
public void onClick(View view) {
Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);
LoginActivity.this.startActivity(registerIntent );
}
});
}
}
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RegisterActivity |
package com.example.han.member;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import android.widget.EditText;
public class RegisterActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
EditText idText = (EditText)findViewById(R.id.idText);
EditText passwordText = (EditText)findViewById(R.id.passwordText);
EditText nameText = (EditText)findViewById(R.id.nameText);
EditText ageText = (EditText)findViewById(R.id.ageText);
Button registerButton = (Button)findViewById(R.id.registerButton);
}
}
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MainActivity |
package com.example.han.member;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
EditText idText = (EditText)findViewById(R.id.idText);
EditText passwordText = (EditText)findViewById(R.id.passwordText);
TextView welcomeMessage = (TextView)findViewById(R.id.welcomeMessage);
}
}
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