/// <summary>
/// 清除导航栈内所有数据，通常来说，跳转场景前需要进行这种操作，除非某些GameObject是DontDestroyed,同时需要声明的是，栈内页面的顺序和正确性需要自己维护好
/// </summary>
public void ClearNavigationStack()
{
if (mNavigationStack != null && mNavigationStack.Count > 0)
{
while (mNavigationStack.Count > 0)
{
UIBasePanel top = mNavigationStack.Pop();
top.OnExit();
}
}
mNavigationStack.Clear();
Resources.UnloadUnusedAssets();
}
/// <summary>
/// 关闭栈顶页面，如果允许回退的页面，就不pop出栈
/// </summary>
/// <param name="target">当前页面，需要注意的是，页面导航栈需要自行维护好</param>
public void PopPanel(UIBasePanel target)
{
if (target == null && !target.ActiveSelf)
{
return;
}
if (mNavigationStack != null && mNavigationStack.Count > 0)
{
if (CheckIfNeedBack(target))
{
target.OnExit();
}
else
{
mNavigationStack.Pop().OnExit();
}
}
else
{
target.OnExit();
}
}
/// <summary>
/// 出栈并移除显示
/// </summary>
public void PopPanel()
{
if (m_PanelStack.Count <= 0)
{
return;
}
UIBasePanel topPanel = m_PanelStack.Pop();
topPanel.OnExit();
if (m_PanelStack.Count <= 0)
{
return;
}
topPanel = m_PanelStack.Peek();
topPanel.OnResume();
}