Android : Not scrolling screen

I have layout the file of the screen in which there is GridView with elements and lianerlayout is slightly lower in which shall information on clicking elements in GridView is output. Here XML file:

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="360dp"
        android:orientation="vertical" >

        <RelativeLayout
            android:id="@+id/header"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/calendar_top" >

            <RelativeLayout
                android:id="@+id/previous"
                android:layout_width="40dip"
                android:layout_height="30dip"
                android:layout_alignParentLeft="true" >

                <ImageView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerInParent="true"
                    android:background="@drawable/arrow_left" />
            </RelativeLayout>

            <TextView
                android:id="@+id/title_calendar"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="5dip"
                android:textColor="#000000"
                android:textSize="18dip"
                android:textStyle="bold" />

            <RelativeLayout
                android:id="@+id/next"
                android:layout_width="40dip"
                android:layout_height="30dip"
                android:layout_alignParentRight="true" >

                <ImageView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerInParent="true"
                    android:background="@drawable/arrow_right" />
            </RelativeLayout>
        </RelativeLayout>

        <GridView
            android:id="@+id/gridview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:listSelector="@android:color/transparent"
            android:numColumns="7"
            android:stretchMode="columnWidth" >
        </GridView>

    </LinearLayout>

            <LinearLayout
                android:id="@+id/linLayout_all_ivents_in_this_day"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical" >

            </LinearLayout>

</LinearLayout>

The screen is scrolled if I expose any value of height, in my case 360dp (android:layout_height = "360dp"), but it looks ugly and if I expose android:layout_height value = to "wrap_content", it looks as it would be desirable that, but the screen ceases to be scrolled.