[안드로이드] GridLayout, FrameLayout 연습 예제

frameLayout?
컨텐츠들이 겹겹이 쌓여 있는 형태로, 포토샵에서 사용하는 레이어 형태라고 생각하면 편하다

GridLayout?
표 형식의 레이아웃으로 행과 열로 구성돼있다.

xml 파일

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
    tools:context=".MainActivity">

    <GridLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:columnCount="3">
        <Button android:id="@+id/btn1"
            android:text="메뉴1"
            android:layout_margin="5dp"
            android:backgroundTint="#FFEB3B"
            android:layout_width="0dp"
            android:layout_columnWeight="1" />
        <Button android:id="@+id/btn2"
            android:text="메뉴2"
            android:layout_margin="5dp"
            android:backgroundTint="#777777"
            android:layout_width="0dp"
            android:layout_columnWeight="1" />
        <Button android:id="@+id/btn3"
            android:text="메뉴3"
            android:layout_margin="5dp"
            android:backgroundTint="#777777"
            android:layout_width="0dp"
            android:layout_columnWeight="1" />

    </GridLayout>
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text="메뉴1 선택 함"
            android:textSize="30dp"
            android:background="#FFEB3B"
            android:id="@+id/txt1" />
        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text="메뉴2 선택 함"
            android:textSize="30dp"
            android:background="#F36F6F"
            android:id="@+id/txt2" />
        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:text="메뉴3 선택 함"
            android:textSize="30dp"
            android:background="#80DBFF"
            android:id="@+id/txt3" />
    </FrameLayout>

</LinearLayout>

java 파일

package com.example.frametest;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    Button btns[] = new Button[3];
    Integer btnIds[] = {R.id.btn1, R.id.btn2, R.id.btn3};

    TextView txts[] = new TextView[3];
    Integer txtIds[] = {R.id.txt1, R.id.txt2, R.id.txt3};
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("연습예제");
        for(int i=0; i<btns.length; i++){
            btns[i] = findViewById(btnIds[i]);
            txts[i] = findViewById(txtIds[i]);
        }
        txts[1].setVisibility(View.INVISIBLE);
        txts[2].setVisibility(View.INVISIBLE);  //메뉴 2,3 숨기기

        for(int i=0; i<btns.length; i++){
            btns[i].setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    switch(view.getId()){
                        case R.id.btn1:
                            txts[0].setVisibility(View.VISIBLE);
                            txts[1].setVisibility(View.INVISIBLE);
                            txts[2].setVisibility(View.INVISIBLE);
                            btns[0].setBackgroundColor(Color.rgb(255, 235, 59));
                            btns[1].setBackgroundColor(Color.rgb(175, 174, 170));
                            btns[2].setBackgroundColor(Color.rgb(175, 174, 170));
                            break;
                        case R.id.btn2:
                            txts[0].setVisibility(View.INVISIBLE);
                            txts[1].setVisibility(View.VISIBLE);
                            txts[2].setVisibility(View.INVISIBLE);
                            btns[0].setBackgroundColor(Color.rgb(175, 174, 170));
                            btns[1].setBackgroundColor(Color.rgb(255, 235, 59));
                            btns[2].setBackgroundColor(Color.rgb(175, 174, 170));
                            break;
                        case R.id.btn3:
                            txts[0].setVisibility(View.INVISIBLE);
                            txts[1].setVisibility(View.INVISIBLE);
                            txts[2].setVisibility(View.VISIBLE);
                            btns[0].setBackgroundColor(Color.rgb(175, 174, 170));
                            btns[1].setBackgroundColor(Color.rgb(175, 174, 170));
                            btns[2].setBackgroundColor(Color.rgb(255, 235, 59));
                            break;
                    }
                }
            });
        }
    }
}

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