android surfaceview onDraw 与 thread.onDraw

Question

安卓游戏用什么比较好:

• 一个带有渲染线程的SurfaceView

  或

• 一个 SurfaceView，带有调用 SurfaceView 函数的线程 doDraw()

谢谢。

Answer 1

SurfaceView 中的绘图已经在单独的线程中处理。您不需要生成新的。

参见 API doc关于它:

One of the purposes of this class is to provide a surface in which a secondary thread can render into the screen. If you are going to use it this way, you need to be aware of some threading semantics:

• All SurfaceView and SurfaceHolder.Callback methods will be called from the thread running the SurfaceView's window (typically the main thread of the application). They thus need to correctly synchronize with any state that is also touched by the drawing thread.
• You must ensure that the drawing thread only touches the underlying Surface while it is valid -- between SurfaceHolder.Callback.surfaceCreated() and SurfaceHolder.Callback.surfaceDestroyed().