ListSelector applies to the entire list

user_248521 0
Viewed 53555

I have a simple list with a listselector like so.

<ListView android:id="@+id/list" android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:layout_below="@+id/round"
    android:listSelector="#99000000" android:clickable="true" android:cacheColorHint="#00000000" android:background="#00000000">
</ListView>

As you can see android:listSelector="#99000000" but the "black alpha" color is applied to the entire list, not the selected item.

So this is what I have now but the entire list still turns black

::listview_background.xml 

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_enabled="false" android:state_focused="true"
        android:drawable="@drawable/list_normal" />
  <item android:state_pressed="true"
        android:drawable="@drawable/list_pressed" />
  <item android:state_focused="true"
        android:drawable="@drawable/list_active" />
</selector>

::colors.xml

<resources>
    <drawable name="list_normal">#96FFFFFF</drawable>
    <drawable name="list_active">#66000000</drawable>
    <drawable name="list_pressed">#CA000000</drawable>
</resources>

::the xml tag in my list 

android:listSelector="@drawable/listview_background"
android
6 Answers

The list selector is a StateListDrawable — it contains reference to multiple drawables for each state the list can be, like selected, focused, pressed, disabled...

In your case, by setting a single colour, the list is drawing #9000 for every single state.

You need to define a StateListDrawable as described above, with XML similar to the following. This is what you set in your android:listSelector attribute.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_enabled="false" android:state_focused="true"
        android:drawable="@drawable/item_disabled" />
  <item android:state_pressed="true"
        android:drawable="@drawable/item_pressed" />
  <item android:state_focused="true"
        android:drawable="@drawable/item_focused" />
</selector>

Or, to set the same list selector for all lists in your application, you can override the selector in the Widget.ListView theme:

<style name="Widget.ListView" parent="Widget.AbsListView">
  <item name="android:listSelector">@drawable/my_custom_selector</item>
</style>
user_2349380
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