스크롤뷰만 넣으면 문제가 생깁니다.

Question

공부중인데 위젯에 스크롤 뷰만 넣으면 해당 위젯에서 "위젯을 로드하는 중 문제가 발생했습니다."라는 에러가 뜨네요.

?

<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:id="@+id/mLayout"             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:background="@layout/rounded_box"               android:gravity="center_vertical"               android:orientation="vertical"               android:paddingBottom="5dp"               android:paddingLeft="10dp"               android:paddingRight="10dp"               android:paddingTop="5dp">       <LinearLayout         android:id="@+id/titleWrap"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:orientation="horizontal">           <TextView             android:id="@+id/textView"             android:layout_width="70dp"             android:layout_height="wrap_content"             android:gravity="left"             android:lineSpacingExtra="3dp"             android:text="위젯 연습 >"             android:textColor="@android:color/holo_green_light"             android:textSize="12dp"             android:textStyle="bold"/>           <TextView             android:id="@+id/textViewCate"             android:layout_width="150dp"             android:layout_height="wrap_content"             android:gravity="left"             android:lineSpacingExtra="3dp"             android:text="카테고리"             android:textColor="@android:color/holo_blue_bright"             android:textSize="10dp"             android:textStyle="bold"/>       </LinearLayout>         <TextView         android:id="@+id/mText"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="3dp"         android:textColor="#ffffff"         android:textSize="13dp"/>       <TextView         android:id="@+id/mTextEng"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="4dp"         android:textColor="@android:color/holo_orange_light"         android:textSize="13dp"         android:textStyle="bold|italic"/>       <TextView         android:id="@+id/mText1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="3dp"         android:textColor="#ffffff"         android:textSize="13dp"/>       <TextView         android:id="@+id/mText1Eng"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="4dp"         android:textColor="@android:color/holo_orange_light"         android:textSize="13dp"         android:textStyle="bold|italic"/> </LinearLayout>

위와 같이 넣으면 문제가 없습니다.

그런데, 아래처럼 스크롤뷰로 감싸면 문제가 생깁니다.

?

<?xml version="1.0" encoding="utf-8"?> <ScrollView 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">   <LinearLayout android:id="@+id/mLayout"               android:layout_width="match_parent"               android:layout_height="match_parent"               android:background="@layout/rounded_box"               android:gravity="center_vertical"               android:orientation="vertical"               android:paddingBottom="5dp"               android:paddingLeft="10dp"               android:paddingRight="10dp"               android:paddingTop="5dp">       <LinearLayout         android:id="@+id/titleWrap"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:orientation="horizontal">           <TextView             android:id="@+id/textView"             android:layout_width="70dp"             android:layout_height="wrap_content"             android:gravity="left"             android:lineSpacingExtra="3dp"             android:text="위젯 연습 >"             android:textColor="@android:color/holo_green_light"             android:textSize="12dp"             android:textStyle="bold"/>           <TextView             android:id="@+id/textViewCate"             android:layout_width="150dp"             android:layout_height="wrap_content"             android:gravity="left"             android:lineSpacingExtra="3dp"             android:text="카테고리"             android:textColor="@android:color/holo_blue_bright"             android:textSize="10dp"             android:textStyle="bold"/>       </LinearLayout>         <TextView         android:id="@+id/mText"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="3dp"         android:textColor="#ffffff"         android:textSize="13dp"/>       <TextView         android:id="@+id/mTextEng"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="4dp"         android:textColor="@android:color/holo_orange_light"         android:textSize="13dp"         android:textStyle="bold|italic"/>       <TextView         android:id="@+id/mText1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="3dp"         android:textColor="#ffffff"         android:textSize="13dp"/>       <TextView         android:id="@+id/mText1Eng"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:gravity="left"         android:lineSpacingExtra="4dp"         android:textColor="@android:color/holo_orange_light"         android:textSize="13dp"         android:textStyle="bold|italic"/> </LinearLayout> </ScrollView>

안드로이드 스튜디오에선 특별한 에러도 발생하지 않는데 설치된 위젯이 안되네요.

문제가 뭘까요?