UISceneDelegate
在
Xcode11中新建項(xiàng)目，發(fā)現(xiàn)從iOS13開(kāi)始，AppDelegate中不再管理Window挎袜，而是將功能遷移到了SceneDelegate中窘游。-
首先看一下
info.plist的變化
enable Multipe Windows--- 是否允許分屏Scene Configuratiton--- 屏幕配置項(xiàng)Application Session Role--- 程序屏幕配置規(guī)則（為每個(gè)Scene指定規(guī)則）Configuration Name--- 配置名稱Delegate Class Name--- 代理類名稱Storyboard Name---Storyboard名稱
- 根據(jù)上面配置，我們可以解讀為惜纸，創(chuàng)建項(xiàng)目時(shí)叶撒，系統(tǒng)默認(rèn)為我們做了設(shè)置，一個(gè)名為
Default Configuratiton的默認(rèn)配置堪簿，代理類名稱為SceneDelegate,入口名為Main的Storyboard痊乾， -
AppDelegate中代碼如下
#pragma mark - UISceneSession lifecycle
- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options {
// Called when a new scene session is being created.
// Use this method to select a configuration to create the new scene with.
return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];
}
那么問(wèn)題來(lái)了，想要自定義Window,不通過(guò)Storyboard創(chuàng)建椭更，該如何操作?
在iOS13及以上系統(tǒng)
- 如果繼續(xù)使用
SceneDelegate哪审，需要將info.plist中的Storyboard Name選項(xiàng)刪除（即不指定Storyboard） -
SceneDelegate中代碼修改如下：
- (void)scene:(UIScene *)scene willConnectToSession:(UISceneSession *)session options:(UISceneConnectionOptions *)connectionOptions {
if (@available(ios 13, *)) {
if (scene) {
self.window = [[UIWindow alloc] initWithWindowScene:(UIWindowScene *)scene];
self.window.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:[[ViewController alloc]init]];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
}
}
}
低于iOS13的系統(tǒng)
- 刪除
info.plist文件中的Application Scene Manifest選項(xiàng) - 刪除
SceneDelegate文件 - 刪除
AppDelegate中的SceneDelegate方法 -
AppDelegate.h中添加
@property (strong, nonatomic) UIWindow *window;
-
AppDelegate修改代碼如下：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
ViewController * vc = [[ViewController alloc]init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:vc];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}
