[Java] Intent

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:gravity="center"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btnMoveToSub"
        android:layout_width="400dp"
        android:layout_height="100dp"
        android:textAllCaps="false"
        android:text="Move To SubActivity"
        android:textSize="30dp"
        android:textStyle="bold|italic"
        android:textColor="#FFFFFF"
        android:background="#FF7F00" />

</LinearLayout>

activity_main.xml

 

 

 

 

 

 

activity_sub.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    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"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".SubActivity">

    <TextView
        android:id="@+id/tvName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="26dp"
        android:layout_centerInParent="true"
        tools:text="Name" />

    <TextView
        android:id="@+id/tvNickname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="26dp"
        android:layout_marginTop="30dp"
        android:layout_below="@+id/tvName"
        android:layout_centerInParent="true"
        tools:text="Nickname" />

    <TextView
        android:id="@+id/tvAge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="26dp"
        android:layout_marginTop="30dp"
        android:layout_below="@+id/tvNickname"
        android:layout_centerInParent="true"
        tools:text="Age" />

    <TextView
        android:id="@+id/tvFavoriteMovies"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="26dp"
        android:layout_marginTop="30dp"
        android:layout_below="@+id/tvAge"
        android:layout_centerInParent="true"
        android:singleLine="true"
        android:ellipsize="end"
        tools:text="FavoriteMovies" />

    <TextView
        android:id="@+id/tvPrivacy"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="26dp"
        android:layout_marginTop="30dp"
        android:layout_below="@+id/tvFavoriteMovies"
        android:layout_centerInParent="true"
        tools:text="Privacy" />

    <Button
        android:id="@+id/btnMoveToMain"
        android:layout_width="400dp"
        android:layout_height="100dp"
        android:textAllCaps="false"
        android:text="Move To MainActivity"
        android:textSize="30dp"
        android:textStyle="bold|italic"
        android:textColor="#FFFFFF"
        android:background="#FF7F00"
        android:layout_marginTop="100dp"
        android:layout_below="@+id/tvPrivacy"
        android:layout_centerInParent="true" />

</RelativeLayout>

activity_sub.xml

 

 

 

 

 

 

Privacy.java

package com.jwsoft.javaproject;

import java.io.Serializable;

public class Privacy implements Serializable {
    private String height;
    private String weight;

    public Privacy(String height, String weight) {
        this.height = height;
        this.weight = weight;
    }

    public void setHeight(String height) {
        this.height = height;
    }

    public void setWeight(String weight) {
        this.weight = weight;
    }

    public String getHeight() {
        return height;
    }

    public String getWeight() {
        return weight;
    }
}

 

 

 

 

 

 

 

MainActivity.java

package com.jwsoft.javaproject;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    private Button btnMoveToSub;
    private Intent intent;

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

        intent = new Intent(this, SubActivity.class);
        intent.putExtra("Name", "James Kim");
        intent.putExtra("Nickname", "혀가 길지 않은 개발자");
        intent.putExtra("Age", 30);
        String[] movies = {"The Avengers", "Good Will Hunting", "Notting Hill"};
        intent.putExtra("FavoriteMovies", movies);
        intent.putExtra("Privacy", new Privacy("184", "84"));

        btnMoveToSub = findViewById(R.id.btnMoveToSub);
        btnMoveToSub.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(intent);
            }
        });
    }

}

 

 

 

 

 

 

 

 

SubActivity.java

package com.jwsoft.javaproject;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class SubActivity extends AppCompatActivity {

    private TextView tvName;
    private TextView tvNickname;
    private TextView tvAge;
    private TextView tvFavoriteMovies;
    private TextView tvPrivacy;
    private Button btnMoveToMain;
    private Intent intent;

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

        initializeView();

        intent = new Intent(this, MainActivity.class);
        btnMoveToMain.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(intent);
            }
        });

        String name = getIntent().getStringExtra("Name");
        String nickName = getIntent().getStringExtra("Nickname");
        int age = getIntent().getIntExtra("Age", 0);
        String[] moves = getIntent().getStringArrayExtra("FavoriteMovies");
        Privacy privacy = (Privacy) getIntent().getSerializableExtra("Privacy");

        tvName.setText(name);
        tvNickname.setText(nickName);
        tvAge.setText(Integer.toString(age));

        String strMovies = "";
        for (int i=0; i<moves.length; i++) {
            strMovies += moves[i] + ", ";
        }
        tvFavoriteMovies.setText(strMovies);

        tvPrivacy.setText(privacy.getHeight() + " / " + privacy.getWeight());

    }

    void initializeView() {
        tvName = findViewById(R.id.tvName);
        tvNickname = findViewById(R.id.tvNickname);
        tvAge = findViewById(R.id.tvAge);
        tvFavoriteMovies = findViewById(R.id.tvFavoriteMovies);
        tvPrivacy = findViewById(R.id.tvPrivacy);
        btnMoveToMain = findViewById(R.id.btnMoveToMain);
    }
}

실행 결과