(Android sliding menu makes RenRenSlidingLayout source code, sidesliding layout objects, and shows or hides the menu layout on the left through finger sliding. Menu button, click the button to show the layout on the left, click again to hide the layout on the left, and then click again to act as an adapter for the contentListView, put the ListView in the content layout, bind the monitoring sliding events to the contentListView, and click the menu to show the layout on the left, Click the function of hiding the left layout again. When scrolling to display and hide the left layout, the speed at which the finger needs to slide can be as high as the left edge of the left layout. The value is determined by the width of the left layout. MarginLeft cannot be cut after reaching this value. Bind the view listening to sideslip events, that is, the left layout can be displayed and hidden only when the bound view is slided. Reset the parameters of the left layout and the right layout in onLayout. The source code rewrites the structure function of SlidingLayout, in which the screen width is obtained.)