안드로이드 - 프로젝트2. 액티비티 화면 전환

예제 출처 : https://www.inflearn.com/course

예제 소스 : https://github.com/GaKaRi/gakari_android/tree/master/Proj_Manager_v2

프로젝트1. 애플리케이션 화면 디자인

이번에는 인텐트를 이용해서 액티비티간 화면 전환을 합니다.

RegisterActivity.java

package com.example.kch.proj_manager_v2;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

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 regbtn = (Button)findViewById(R.id.registerbtn);

    }

}

LoginActivity.java

package com.example.kch.proj_manager_v2;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

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 loginbtn = (Button)findViewById(R.id.loginbtn);

        TextView registerbtn = (TextView)findViewById(R.id.registerbtn);

        registerbtn.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);

                LoginActivity.this.startActivity(registerIntent);

            }

        });

    }

}

MainActivity.java

package com.example.kch.proj_manager_v2;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.EditText;

import android.widget.TextView;

import org.w3c.dom.Text;

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 welcome = (TextView)findViewById(R.id.WelcomeMessage);

    }

}

실행 화면

첫화면에서 REGISTER를 누르면

아래와 같이 activity_register.xml로 이동하게 됩니다.