Set the start and end trim for the progress spinner arc. @param startAngle start angle @param endAngle end angle

@param show Set to true to display the arrowhead on the progress spinner.

If the start / end trim are offset to begin with, store them so that animation starts from that offset.

Update the ring color if this is within the last 25% of the animation. The new ring color will be a translation from the starting ring color to the ne

Set the overall size for the progress spinner. This updates the radius and stroke width of the ring. @param size One of {@link MaterialProgressDrawab

Add scroll listener to the recycler @param listener

Callback that will be called when {@link SwipeRefreshLayout#canChildScrollUp()} method is called to allow the implementer to override its behavior. @

{@inheritDoc}

@return int describing the next color the progress spinner should use when drawing.

Proceed to the next available ring color. This will automatically wrap back to the beginning of colors.

Implement this method to customize the AbsListView

插入，不会触发任何事情 @param object The object to insert into the array. @param index The index at which the object must be inserted.

Updates the header view to reflect the header data for the given position @param viewholder the header view holder @param position the header's item p

Creates a new header ViewHolder. @param parent the header's view parent @return a view holder for the created view

Set the dimensions of the arrowhead. @param width Width of the hypotenuse of the arrow head @param height Height of the arrow point

@param centerRadius Inner radius in px of the circle the progress spinner arc traces.

Set the listener to be notified when a refresh is triggered via the swipe gesture.

Set the background color of the progress spinner disc. @param color

Set the background color of the progress spinner disc. @param colorRes Resource id of the color.