Android ListView item blinks on selection

I am creating a custom ListView as below

Main Layout

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">

    <ListView android:id="@+id/listview"
    android:layout_width="0dip"
    android:layout_height="wrap_content"
    android:layout_margin="3dip"  
    android:fadingEdge="none"
    android:soundEffectsEnabled="true"       
    android:clickable="true"                
    android:scrollbars="none"
    android:divider="#ffcccccc"
    android:dividerHeight="1dip"                
    android:layout_weight="1"/>
</LinearLayout>

Custom ListView

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="w开发者_Go百科rap_content"
android:orientation="horizontal"
android:background="@drawable/sellistitem">  
  <TextView
   android:id="@+id/ListItem"       
   android:layout_width="wrap_content"
   android:layout_height="30dip"
   android:layout_margin="1dip"             
   android:textColor="@color/BLACK"
   android:gravity="center_vertical"
   android:layout_alignParentLeft="true"
   android:layout_alignParentTop="true" 
   android:padding="5dip"/>           
</RelativeLayout>

and Selector as below

<selector 
xmlns:android="http://schemas.android.com/apk/res/android"> 
<item android:state_pressed="true" android:drawable="@drawable/BLUE" /> 
<item android:drawable="@drawable/WHITE" /> 
</selector> 

The Drawable

 <resources>
    <drawable name="WHITE">#ffffff</drawable>
    <drawable name="BLUE">#ff0033cc</drawable>
 </resources>

Having done this the selection part works fine. However when I click on any item ,the selected item blinks twice before actually changing to blue. It doesn't change to blue directly as it should. How can I remove this blinking effect?

Regards,

try this android:cacheColorHint="#00000000" to listview

Selectors are tricky, in general. Try this for your selector instead:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_pressed="true" 
        android:state_enabled="true"
        android:drawable="@drawable/selected_background" />
  <item android:state_focused="false" 
        android:state_pressed="false" 
        android:state_selected="false"
        android:state_checked="false" 
        android:state_enabled="true" 
        android:state_checkable="false"
        android:drawable="@drawable/normal_background"/>
</selector>

Note that the android:drawable attribute does not have to be a drawable. If it's a simple color you can reference it with the @color/background_color format.

EDIT:

Ok, those white and blue "drawables" aren't drawables, they're just colors, you're better off defining them in the colors.xml. It could be that that is actually the reason for the flickering.

<resources>
    <color name="blue">#ff0033cc</color>
    <color name="white">#ffffff</color>
</resources>