afater windowmanager addview how to removeview

**Surface management ：** Windows don't have drawing function, So every window needs one Surface To draw for yourself ,WMS This is this.and WMS Is the manager of these windows, It naturally becomes the transfer station of the input system. The transfer station of the input system ： Touching a window on the device screen will generate a touch event ,InputManagerService（IMS） Handle touch events, Find the most appropriate window to feedback events. ** Window animation ：** When switching windows, Using window animation can make this process look more dazzling and vivid, This window animation is made by WMS The animation subsystem of, The manager of the animation subsystem is WindowAnimator. ** Window management ：**WMS Window manager, combination WindowManager Start the window 、 add to 、 Delete, And the size of the management window 、 Hierarchy, etc.

Here is a brief description of the functions ： WMS The general function of is shown in the figure below ： About WMS It's just too much, Here is a brief introduction to its general functions and startup process. It supports all businesses related to views, This is very consistent with the single responsibility principle of software design, Its business and ActivityManagerService（ abbreviation AMS） Together, they almost occupy framework Half of the business, So it's important. If you are overriding this method with your own custom content, consider including the standard layout android.R.layout#list_content}in your layout file, so that you continue to retain all of the standard behavior of ListFragment.If you want to know WindowManager Management mechanism, First of all, let's introduce WMS Is a very important system service. If doing so, the returned view hierarchy must have a ListView whose id is android.R.id#list android.R.id.list} and can optionallyhave a sibling view id android.R.id#empty android.R.id.empty}that is to be shown when the list is empty.

Subclasses can override to replace with their own layout. * Provide default implementation to return a simple list view.

Afater windowmanager addview how to removeview