[UMC] Android 2주차 워크북 (Layout) - 인스타그램

📌 구상 과정

두 번째로 생각한 앱 화면은 인스타그램이다!
빨간색 ImageView, 파란색 TextView

 

📌 직접 구현하기

실제로 구현한 앱 화면

 

📌 Layout 설명

• Header - Constraint Layout 안에 Linear Layout 중첩, Linear Layout
• Body - Gird Layout에 Linear Layout 중첩
• Footer - Linear Layout

📌 새롭게 알게 된 점

1. GirdLayout
이거 해결하느라 2시간 정도 죽는 줄 알았다.....
GirdLayout에서는 바로 ImageView가 안 되나보다....
그래서 LinearLayout으로 한 행씩 감싸주고 ImageView마다 layout_weight을 1씩 줘야 한다...

Android GridLayout(그리드레이아웃)에서 화면 꽉차게 정렬하는 Tip

2. </> 괄호 조심하기
Layout은 ex) <LinearLayout></LinearLayout>이고
View는 ex) <ImageView />이다.

👇전체 코드

<?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">

    <!-- Header -->
    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/header"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginTop="40dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:orientation="horizontal"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Shop"
            android:textSize="30dp"
            android:textStyle="bold"
            android:textColor="@color/black"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintLeft_toLeftOf="parent" />
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:gravity="right"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent">
            <ImageView
                android:layout_width="34dp"
                android:layout_height="34dp"
                android:layout_marginRight="15dp"
                android:src="@drawable/left" />
            <ImageView
                android:layout_width="34dp"
                android:layout_height="match_parent"
                android:src="@drawable/right" />
        </LinearLayout>
    </androidx.constraintlayout.widget.ConstraintLayout>

    <LinearLayout
        android:id="@+id/search"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="@color/lightgray"
        android:layout_margin="15dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/header">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:src="@drawable/search"
            android:layout_marginLeft="10dp"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginLeft="5dp"
            android:textSize="15dp"
            android:text="검색" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/movie"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="@color/lightgray"
        android:layout_margin="15dp"
        android:gravity="center"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/search">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginLeft="5dp"
            android:textSize="13dp"
            android:textColor="@color/black"
            android:textStyle="bold"
            android:text="동영상" />
    </LinearLayout>

    <!-- Body -->
    <GridLayout
        android:id="@+id/body"
        android:layout_height="0dp"
        android:layout_width="match_parent"
        android:columnCount="1"
        android:layout_marginTop="10dp"
        app:layout_constraintTop_toBottomOf="@id/movie"
        app:layout_constraintStart_toStartOf="parent">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="200dp"
            >
            <ImageView
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:src="@drawable/img"/>
            <ImageView
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:src="@drawable/img_1"/>
        </LinearLayout>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="200dp"
            >
            <ImageView
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:src="@drawable/img_2"/>
            <ImageView
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:src="@drawable/img_3"/>
        </LinearLayout>
    </GridLayout>

    <!-- Footer -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        app:layout_constraintBottom_toBottomOf="parent"
        >
        <ImageView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:src="@drawable/home" />
        <ImageView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:src="@drawable/search" />
        <ImageView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:src="@drawable/play" />
        <ImageView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:src="@drawable/shop" />
        <ImageView
            android:layout_width="0dp"
            android:layout_height="32dp"
            android:layout_weight="1"
            android:src="@drawable/profile" />
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>