java - How to create a menu/tab in Android application? -

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i'm new java , android studio, i'm learning how make simple app buttons. application has bunch of buttons though, thought nicer if split buttons 2 windows/tabs using menu of sort. right now, xml file looks this:

<relative layout.... <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 1"     android:id="@+id/opt1"     android:layout_alignparentleft="true"     android:layout_alignparentstart="true" />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 2"     android:id="@+id/opt2"     android:layout_below="@+id/opt2"     />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 3"     android:id="@+id/opt3"     android:layout_alignparentright="true"     android:layout_alignparentend="true" />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 4"     android:id="@+id/opt4"     android:layout_alignbottom="@+id/opt2"     android:layout_alignparentright="true"     android:layout_alignparentend="true" />   <edittext     android:layout_width="300dp"     android:layout_height="80dp"     android:text="say something..."     android:id="@+id/text"     android:layout_below="@+id/opt2"     android:layout_alignparentleft="true"     android:layout_alignparentstart="true"     android:layout_margintop="10dp"     android:editable="true" />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 5"     android:id="@+id/opt5"     />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 6"     android:id="@+id/opt6"     android:layout_alignparentbottom="true" />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 7"     android:id="@+id/opt7"      android:enabled="false" />  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="option 8"     android:id="@+id/opt8"     android:layout_alignparentleft="true"     android:layout_alignparentstart="true"     android:enabled="false"     />   </relativelayout>

in main activity class, have action listeners these buttons in protected void oncreate(bundle savedinstancestate) method. now, layout cluttered , want move buttons 5-8 , edittext object tab or window of sort, don't know how that. there simple way go this? appreciated! thank you


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