java - Android hide and show components -


i making sqlite android application list data , show graphs , visit web site starting default browser(not in application using webview) , send emails using form . have couple of forms . thinking instead of using several activities , xml layouts put in 1 xml layout , on button click show , hide components done javascript these components ...

<scrollview xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="fill_parent"      android:layout_height="fill_parent">  <relativelayout     android:layout_width="match_parent"     android:layout_height="432dp"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     tools:context=".mainactivity" >      <textview         android:id="@+id/textview1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_alignparenttop="true"         android:layout_centerhorizontal="true"         android:layout_margintop="32dp"         android:text="enter company name " />      <edittext         android:id="@+id/edittext1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/textview1"         android:layout_centerhorizontal="true"         android:ems="10">          <requestfocus />     </edittext>      <spinner         android:id="@+id/spinner1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/edittext1"         android:layout_centerhorizontal="true"         android:layout_margintop="17dp"          android:entries="@array/country_arrays"         android:prompt="@string/country_prompt"         />      <spinner         android:id="@+id/spinner2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignleft="@+id/spinner1"         android:layout_below="@+id/spinner1"          android:entries="@array/limit_arrays"         android:prompt="@string/limit_prompt"         />      <button         android:id="@+id/button1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/spinner2"         android:layout_centerhorizontal="true"         android:text="hide" />      <button         android:id="@+id/button2"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/button1"         android:layout_centerhorizontal="true"         android:text="show" />  </relativelayout> </scrollview>

then show or hide components using example 

spinner1.setvisibility(view.visible);  spinner1.setvisibility(view.gone);

this seams working fine , getting kind of low on space on xml screen. how put more components in bottom , make view scroll down although have put 

<scrollview xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="fill_parent"      android:layout_height="fill_parent">

on top of xml layout . , idea menu organisation ?


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