인프런 커뮤니티 질문&답변

<?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"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="120dp">

        <ImageView
            android:src="@drawable/photo_1"
            android:layout_width="120dp"
            android:layout_height="120dp"/>
        <ImageView
            android:src="@drawable/photo_2"
            android:layout_width="120dp"
            android:layout_height="120dp"/>
        <ImageView
            android:src="@drawable/photo_3"
            android:layout_width="120dp"
            android:layout_height="120dp"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="120dp">

        <ImageView
            android:src="@drawable/photo_4"
            android:layout_width="120dp"
            android:layout_height="120dp"/>
    </LinearLayout>

</LinearLayout>




run 하였을때 밑과같은 빌드오류가 됩니다. 

Installed Build Tools revision 31.0.0 is corrupted. Remove and install again using the SDK Manager.