/// <summary>
/// 用于回收再利用
/// 默认调用了LoadContent以及Reinit
/// 注意的是：screenType不能为Between
/// </summary>
/// <param name="screenType">屏幕种类</param>
/// <param name="createScreen">生成屏幕的方法</param>
public void ChangeScreenTo(ScreenType screenType, CreateScreen createScreen)
{
if (currentScreen != null)
{
previousScreenType = currentScreenType;
previousScreen = currentScreen;
//注意，一定要先释放Input资源，并且注意不要重复释放！
previousScreen.UnloadContent();
}
if (!screenDictionary.ContainsKey(screenType))
{
/*
#region 设置新页面
* screenDictionary.Add(screenType, createScreen());
* new Thread(new ThreadStart(screenDictionary[screenType].RegistCotent)).Start();
* nextScreenType = screenType;
* nextScreen = screenDictionary[screenType];
#endregion
*
#region 设置Between页面
* //设置BetweenScreen。
* //默认存在BetweenScreen
* currentScreenType = ScreenType.Between;
* currentScreen = screenDictionary[ScreenType.Between];
* currentScreen.ReInit();
#endregion
*/
//为了省事，这是老方法
screenDictionary.Add(screenType, createScreen());
currentScreenType = screenType;
currentScreen = screenDictionary[screenType];
currentScreen.BaseLoadContent();
}
else
{
#region 直接加载新页面
currentScreenType = screenType;
currentScreen = screenDictionary[screenType];
//重新启动
currentScreen.ReInit();
#endregion
#region 清理资源
ReleaseScreen();
//重置nextScreen
nextScreen = null;
#endregion
}
}
/// <summary>
/// 只有在加载页面动画完成后才释放资源
/// </summary>
public static void ReleaseScreen()
{
if (previousScreen != null)
{
//重置资源
//特别注意的是，释放Input资源应该在加载新页面之前！
SAGlobal.CleanTemporalContent();
if (previousScreen.Releasable)
{
screenDictionary.Remove(previousScreenType);
}
//重置指针
previousScreen = null;
}
}