android:id - Name a ListView

How to Name an ListView

android:id was added in API Level 1
This is a unique identifier name for the ListView, so you can refer to the ListView later in your project.

1. Add a ListView in your main.xml file.

2. In the main.xml file, add the code below.

  <ListView
        ...
       android:id = "@+id/myListView"
  />

3. The "+" character is required if you have not yet defined that id, if perhaps the element you reference is lower in the .xml file.

Otherwise you if it's already defined above (or included) then you can omit the "+" char:

4. Compile and run!

Next Recommended Article: How to Extend the ListActivity class

Resources:
http://developer.android.com/reference/android/view/View.html#attr_android:id
http://developer.android.com/reference/android/R.attr.html#id
http://android-wtf.com/2012/11/difference-between-at-plus-id-and-at-id-in-android/
http://stackoverflow.com/questions/5025910/difference-between-id-and-id-in-android
http://stackoverflow.com/questions/5048586/can-you-set-tab-order-in-xml-layout