@return the recycler adapter

Adds the specified object at the end of the array. @param object The object to add at the end of the array.

应该使用这个获取item个数 @return

Adds the specified Collection at the end of the array. @param collection The Collection to add at the end of the array.

这个函数包含了头部和尾部view的个数，不是真正的item个数。 @return

This method converts dp unit to equivalent pixels, depending on device density. @param dp A value in dp (density independent pixels) unit. Which we n

设置适配器，关闭所有副view。展示recyclerView 适配器有更新，自动关闭所有副view。根据条数判断是否展示EmptyView @param adapter

Set the layout manager to the recycler @param manager

Returns the header id for the item at the given position. The item in one group should return the same HeaderId. @param position the item position @r

删除，不会触发任何事情 @param object The object to remove.

Set the absolute color of the progress spinner. This is should only be used when animating between current and next color when the spinner is rotating

@param index Index into the color array of the color to display in the progress spinner.

Pre API 11, this does an alpha animation. @param progress

Set the listener when refresh is triggered and enable the SwipeRefreshLayout @param listener

@return The amount the progress spinner is currently rotated, between [0..1].

设置适配器，关闭所有副view。展示进度条View 适配器有更新，自动关闭所有副view。根据条数判断是否展示EmptyView @param adapter

@return Whether it is possible for the child view of this layout to scroll up. Override this if the child view is a custom view.

{@inheritDoc}

Pre API 11, alpha is used to make the progress circle appear instead of scale.

@param show Set to true to show the arrow head on the progress spinner.

Called when a swipe gesture triggers a refresh.

Reset the progress spinner to default rotation, start and end angles.

@param scale Set the scale of the arrowhead for the spinner.

Set the colors used in the progress animation. The first color will also be the color of the bar that grows in response to a user swipe gesture. @par

Set the color resources used in the progress animation from color resources. The first color will also be the color of the bar that grows in response

Set the colors the progress spinner alternates between. @param colors Array of integers describing the colors. Must be non-<code>null</code>.