public UIPanelBase currentPanel; //当前在显示的UI界面
public void ShowUIPanel(string panelName)
{
//如果要显示的页面已经加载过
if (uiPool.ContainsKey(panelName))
{
if (currentPanel == null)//如果当前没有界面在显示
{
currentPanel = uiPool[panelName];
currentPanel.Show();
}
else if (currentPanel.name != panelName) //如果不是当前界面
{
//隐藏当前界面
currentPanel.Hide();
currentPanel = uiPool[panelName];
currentPanel.Show();
}
}
else//如果没有加载过
{
//通过C#反射利用字符串去获取当前UI界面的控制组件的类型
System.Type t = Assembly.GetExecutingAssembly().GetType(panelName);
GameObject go = ResourcesManager.Instance.LoadPrefab(panelName);//获取Panel预制体
//实例化
go = Instantiate <GameObject>(go, canvas);
//添加Panel的脚本
UIPanelBase panel = go.AddComponent(t) as UIPanelBase;
go.name = panelName;
//加入池中
uiPool.Add(panelName, panel);
//如果当前有UI界面
if (currentPanel != null)
{
//更换当前页面
currentPanel.Hide();
currentPanel = panel;
currentPanel.Show();
}
else
{
//没有则直接显示
currentPanel = panel;
currentPanel.Show();
}
}
}