android - ScrollView is only showing single view inside its sub-hierarchy -

i supposed add scrollview, enable user scroll down after button. however, not showing supposed show.

whatever add after button, doesn't show on device/emulator. supposed add imageview under button , seem not displaying after button.

following xml:

<?xml version="1.0" encoding="utf-8"?> <scrollview xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fillviewport="true">     <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical" android:layout_width="match_parent"     android:layout_height="match_parent"         android:weightsum="1">            <textview             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:textappearance="?android:attr/textappearancemedium"             android:text="description:"             android:id="@+id/textview14"             android:paddingtop="20dp"             android:layout_below="@+id/edittext"             android:layout_alignleft="@+id/edittext"             android:layout_alignstart="@+id/edittext" />         <textview             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:textappearance="?android:attr/textappearancemedium"             android:text="restaurant location:"             android:id="@+id/textview15"             android:paddingtop="20dp"             android:layout_below="@+id/edittext2"             android:layout_alignleft="@+id/edittext2"             android:layout_alignstart="@+id/edittext2" />          <button             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="new button"             android:id="@+id/button2"             android:layout_below="@+id/imageview3"             android:layout_centerhorizontal="true" />         </relativelayout> </scrollview> 

the problem not aligning views correctly. example, there's no edittext2, edittext , imageview3 , you're aligning views around left or below of them.

either replace relativelayout linearlayout or use xml (i've replaced unknown ids correct ones):

<?xml version="1.0" encoding="utf-8"?> <scrollview xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fillviewport="true">      <relativelayout         android:layout_width="match_parent"         android:layout_height="match_parent">            <textview             android:id="@+id/textview14"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:textappearance="?android:attr/textappearancemedium"             android:text="description:"             android:paddingtop="20dp" />         <textview             android:id="@+id/textview15"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:textappearance="?android:attr/textappearancemedium"             android:text="restaurant location:"             android:paddingtop="20dp"             android:layout_below="@+id/textview14" />          <button             android:id="@+id/button2"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="new button"             android:layout_below="@id/textview15"             android:layout_centerhorizontal="true" />     </relativelayout> </scrollview>