I use below code to convert, but it seems can only get the content in the display screen and can not get the content not in the display screen.
Is there a way to ge
The issue here is that the only actual pixel content that ever exists is that which is visible on the display screen. Android and other mobile platforms are very careful about memory use and one of the ways a scrolling view can maintain performance is to not draw anything that is offscreen. So there is no "full" bitmap anywhere -- the memory containing the content that moves offscreen is recycled.