RecyclerView/Adapter调用notifyItem

RecyclerView调用notifyItemChanged闪烁问题相信很多人都遇到过。
那是因为recyclerView默认设置的动画DefaultItemAnimator造成的，
DefaultItemAnimator继承自SimpleItemAnimator，里面有个方法是
只要设置为false，就可以不显示动画了，也就解决了闪烁问题。

一行代码搞定

  ((SimpleItemAnimator)recyclerView.getItemAnimator()).setSupportsChangeAnimations(false);

查看源码

/**
    * Sets whether this ItemAnimator supports animations of item change events.
    * If you set this property to false, actions on the data set which change the
    * contents of items will not be animated. What those animations do is left
    * up to the discretion of the ItemAnimator subclass, in its
    * {@link #animateChange(ViewHolder, ViewHolder, int, int, int, int)} implementation.
    * The value of this property is true by default.
    *
    * @param supportsChangeAnimations true if change animations are supported by
    *                                 this ItemAnimator, false otherwise. If the property is false,
    *                                 the ItemAnimator
    *                                 will not receive a call to
    *                                 {@link #animateChange(ViewHolder, ViewHolder, int, int, int,
    *                                 int)} when changes occur.
    * @see Adapter#notifyItemChanged(int)
    * @see Adapter#notifyItemRangeChanged(int, int)
    */
   public void setSupportsChangeAnimations(boolean supportsChangeAnimations) {
       mSupportsChangeAnimations = supportsChangeAnimations;
   }