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Editorial Team
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Asked: 2026-06-03T02:26:32+00:00

I’ve got a weird gap in my Android layout. I’ve set the background colors

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I’ve got a weird gap in my Android layout. I’ve set the background colors of my views and layouts so that you can see what is where. The gray box in the middle is the gap. I’ve got a RelativeLayout overall (white background), with a toolbar at the top (seen in pink), then a LinearLayout which is everything else (seen in yellow). In that yellow layout I’ve got two children: detail information (seen in blue), and a ListView (seen in red). However, the gray area in the middle… I have no idea where that is coming from.

enter image description here

Here is my layout file (with some info clipped for readability):

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#fff"
>
    <RelativeLayout
        android:id="@+id/toolbar"
        android:layout_width="fill_parent"
        android:layout_height="44dp"
        android:background="@drawable/toolbar_gradient"
        android:layout_alignParentTop="true" 
        android:background="#f0f"
       >

        <Button style="@style/Button.Done" />
    </RelativeLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@id/toolbar"
        android:paddingTop="4dp"
        android:weightSum="10"
        android:orientation="vertical"
        android:background="#ff0"
    >
        <LinearLayout 
            android:layout_width="fill_parent" 
            android:layout_height="0dp" 
            android:layout_weight="3.5" 
            android:weightSum="9"
            android:orientation="vertical"
            android:background="#00f"
            >

        </LinearLayout>

        <ListView
            android:id="@+id/tableView"
            android:layout_width="fill_parent"
            android:layout_height="0dp"
            android:layout_weight="6.5"
            android:background="#f00" >
        </ListView>
    </LinearLayout>

</RelativeLayout>

What is happening here? What am I missing?

EDIT: It appears the layout xml may not be the problem. I’ve been working to reduce and reduce and reduce and find the real culprit. It’s looking like my problem exists in the ListAdapter code. Will update more as I discover it.

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1 Answer

  1. Editorial Team

    Ok, so after what felt like endless iterations of removing things until it was fixed and adding things back in until it broke again to narrow down to the specific problem I have discovered my error. I narrowed the problem down to my styling on the layout of the cells inside the ListView above.

    I created a script awhile back to help me generate many different style.xml copies for different layout sizes and such so that I can provide good font size or layout_height values for different devices and make them look right. However, due to an error in my styles template, the style.xml which was being generated with a line <item name="android:layout_height">dp</item>. The missing number before the dp caused whacky behavior.

    sigh Well, THAT sucked. 😉

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