my tabs dont work what should i do (android app eclipse) - android-layout

Question

i am using eclipse to make an android app and i have added tabs to it but when i run the app all of the stuff in the tabs overlap onto one page how can i fix this, here is my code:
<RelativeLayout 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" >
<TabHost
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:showDividers="middle"
android:tabStripEnabled="true" >
</TabWidget>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:id="#+id/tab1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:text="#string/Lat" />
<TextView
android:id="#+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView1"
android:layout_below="#+id/textView1"
android:layout_marginTop="20dp"
android:text="#string/Long" />
<TextView
android:id="#+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/TextView01"
android:layout_below="#+id/TextView01"
android:layout_marginTop="20dp"
android:text="#string/Alt" />
<TextView
android:id="#+id/TextView06"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/TextView01"
android:layout_alignParentRight="true"
android:layout_marginRight="20dp"
android:text="#string/Current_Lat" />
<TextView
android:id="#+id/TextView05"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/TextView02"
android:layout_alignRight="#+id/TextView06"
android:text="#string/Current_Long" />
<TextView
android:id="#+id/TextView07"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/TextView02"
android:layout_alignBottom="#+id/TextView02"
android:layout_alignRight="#+id/TextView05"
android:text="#string/Current_Alt" />
<TextView
android:id="#+id/TextView03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/TextView02"
android:layout_below="#+id/TextView02"
android:layout_marginTop="20dp"
android:text="#string/Speed" />
<TextView
android:id="#+id/TextView04"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/TextView03"
android:layout_alignBottom="#+id/TextView03"
android:layout_alignRight="#+id/TextView07"
android:text="#string/Current_Speed" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="#string/start" />
</RelativeLayout>
<LinearLayout
android:id="#+id/tab2"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</LinearLayout>
<LinearLayout
android:id="#+id/tab3"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
</RelativeLayout>
also i am trying to put a map into my app, how would i go about doing this?