<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="600dip"
    android:layout_height="400dip"
    android:orientation="vertical">
            
    <EditText
        android:id="@+id/cardname_edit"
        android:layout_height="200dip"
        android:layout_width="550dip" 
        android:scrollHorizontally="true"
       
        android:capitalize="none"
        android:maxLength="10" 
        android:gravity="fill_horizontal"
        android:textAppearance="?android:attr/textAppearanceMedium" />   
      
       <LinearLayout android:id = "@+id/button_next"
                android:layout_width="400px"
       android:layout_height="80px"
       android:layout_marginTop="10px"
       android:layout_marginLeft="2px"
       android:layout_marginRight="5px"  
       android:orientation="horizontal">
    
    <Button  android:id = "@+id/CardNameSave"
             android:text = "@string/save"
             android:layout_gravity="center_vertical"
             android:layout_width = "135dp"
             android:layout_height = "wrap_content"/> 
     <Button android:id = "@+id/CardNameCancel"
             android:text = "@string/cancel"
             android:layout_gravity="center_vertical"
             android:layout_width = "135dp"
             android:layout_height = "wrap_content"/>    
  </LinearLayout>

</LinearLayout>

xml 파일을 다음과같이했는데요  실행하면 edittext 박스가안나와요

button 두개만나오네요 ㅠㅠ 왜이러죠 ㅠ