AbstractListView源码分析3

 /**
     * Normal list that does not indicate choices
     */
    public static final int CHOICE_MODE_NONE = 0;

    /**
     * The list allows up to one choice
     */
    public static final int CHOICE_MODE_SINGLE = 1;
    /**
     * The list allows multiple choices
     */
    public static final int CHOICE_MODE_MULTIPLE = 2;

    /**
     * The list allows multiple choices in a modal selection mode
     */

    public static final int CHOICE_MODE_MULTIPLE_MODAL = 3;

以上属性表明了选项的状态的，如单选、多选等等

 /**
     * The thread that created this view.
     */
    private final Thread mOwnerThread;创建视图的线程

/**
     * Controls if/how the user may choose/check items in the list
     */
    int mChoiceMode = CHOICE_MODE_NONE;表明用户指定的模式

    /**
     * Controls CHOICE_MODE_MULTIPLE_MODAL. null when inactive.
     */
    ActionMode mChoiceActionMode;ActionMode用来实现Listview的多选功能，通过设置它来激活多选功能

   /**
     * Wrapper for the multiple choice mode callback; AbsListView needs to perform
     * a few extra actions around what application code does.
     */
    MultiChoiceModeWrapper mMultiChoiceModeCallback;封装了多选模式的回调接口

  /**
     * Running count of how many items are currently checked
     */
    int mCheckedItemCount;当前checked的数目