Question

I am facing this issue on Android 2.3.5 (and possibly earlier Android versions)

When my expnadablelistview is collapsed background is displayed correctly. As soon as one group row is expanded its background turns black.

Here is the listview

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

    <TextView  
        android:id="@+id/ExpandableListText"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:textColor = "#490600"
        android:paddingRight = "25sp"
        android:paddingLeft = "25sp"
    />

    <ExpandableListView 
        android:id="@+id/ExpandableListView01" 
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:divider="#000000"
        android:dividerHeight="1sp"
        android:childDivider="#000000"
        android:headerDividersEnabled="true"
        android:footerDividersEnabled="true"
        android:scrollingCache="false"
        android:cacheColorHint="#00000000"
         android:drawSelectorOnTop="true"
    />
</LinearLayout>

Here is XML for group row

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

>

    <TextView
        android:id="@+id/TextViewGroup" 
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_marginLeft="50sp"
        android:gravity="center_vertical"
        android:textColor = "#490600"
        android:paddingTop="7dip"
        android:paddingBottom="7dip"
    ><!--  -->
    </TextView>

</LinearLayout>

Here is child_row XML

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

>
 <!-- android:background="#666666" -->
    <!--  -->
    <TextView
        android:id="@+id/TextViewChild01" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="30sp"
        android:textColor = "#000000"
    >
    </TextView>

    <TextView
        android:id="@+id/TextViewChild02" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10sp"
        android:textColor = "#000000"
    >
    </TextView>

    <TextView
        android:id="@+id/TextViewChild03" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10sp"
        android:textColor = "#000000"
    >
    </TextView>

</LinearLayout>

Any help is highly appreciated

Answer 1

Customize your ExpandableListView class and then –

package com.test
//....................

View getView(.....) {
   View v = super.getView(....);

   //........
   //change it your color or or set the text you want.
   return(v);
}

and then set it into your layout –

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

<TextView  
    android:id="@+id/ExpandableListText"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:textColor = "#490600"
    android:paddingRight = "25sp"
    android:paddingLeft = "25sp"
/>

<com.test.ExpandableListView 
    android:id="@+id/ExpandableListView01" 
    android:layout_height="wrap_content"
    android:layout_width="fill_parent"
    android:divider="#000000"
    android:dividerHeight="1sp"
    android:childDivider="#000000"
    android:headerDividersEnabled="true"
    android:footerDividersEnabled="true"
    android:scrollingCache="false"
    android:cacheColorHint="#00000000"
     android:drawSelectorOnTop="true"
/>