I have some difficulties with designing my app. My screen should contain toolbar and some edit fields. these fields should be places in the upper part of the screen under the toolbar. In the end it should look like this (sorry for quality of the image):

[![enter image description here](https://i.stack.imgur.com/GerFi.jpg)](https://i.stack.imgur.com/GerFi.jpg)

For this I decided to break the screen height into four equals parts and to pose my edit fields in the second quarter. I tried to use the following code to acchieve this, but it doesn't help: all the smaller relative layouts take all the screen. 
I also tried:

* to substitute the parent Relative layout with Linear layout
* to replace "fill\_parent" with "wrap\_content".

After these actions the smaller layouts simply disappear.

```
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:baselineAligned="false"      > 

    <include android:id = "@+id/toolbarLogo" layout="@layout/toolbar_logo"></include>

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="0.25"
        />
    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="0.25"
        >

        <EditText
            .../>

        <EditText
            ...
            />

        <Button
            .../>    

    </RelativeLayout>

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="0.5"
        />

</RelativeLayout>

```

Could you help me please with this problem?