XML : Table Layout complex design

I am trying to create this using table layout but unable to sort out the weight ratio. i tried several combinations but they turn out to be disaster. can someone guide me through weight distribution of such design.

'

  <?xml version="1.0" encoding="utf-8"?>    

  <TableLayout      android:layout_width="match_parent"      android:layout_height="match_parent"      android:stretchColumns="2"      android:weightSum="8">            <TableRow          android:layout_height="wrap_content"          android:layout_weight="0.5"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.25"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.25"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="2"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="1"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="1"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="1"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="1"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="0.5"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.25"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.25"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="1"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="1"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>      <TableRow          android:layout_height="wrap_content"          android:layout_weight="1"          android:layout_width="wrap_content"  >            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"/>            <ImageButton              android:layout_height="wrap_content"              android:layout_weight="0.5"              android:layout_width="wrap_content"              android:background="@drawable/Image_1"              />      </TableRow>   </TableLayout>    

'