[android] How to make a GridLayout fit screen size

I archive this using LinearLayout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:height="166dp"
            android:text="Tile1"
            android:gravity="center"
            android:background="#6f19e5"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="Tile2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:height="126dp"
            android:gravity="center"
            android:layout_weight=".50"
            android:background="#f1d600"/>

        <TextView
            android:text="Tile3"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:height="126dp"
            android:gravity="center"
            android:layout_weight=".50"
            android:background="#e75548"/>

    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="Tile4"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:height="126dp"
            android:gravity="center"
            android:layout_weight=".50"
            android:background="#29d217"/>

        <TextView
            android:text="Tile5"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:height="126dp"
            android:gravity="center"
            android:layout_weight=".50"
            android:background="#e519cb"/>

    </LinearLayout>
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:height="176dp"
            android:text="Tile6"
            android:gravity="center"
            android:background="#09eadd"/>
    </LinearLayout>
</LinearLayout>