iOS6的旋屏控制技巧app
在iOS5.1 和 以前的版本中, 咱们一般利用 shouldAutorotateToInterfaceOrientation: 来单独控制某个UIViewController的旋屏方向支持,好比:ide
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation == UIInterfaceOrientationPortrait);
- }
可是在iOS6中,这个方法被废弃了,使用无效。spa
shouldAutorotateToInterfaceOrientation:.net
Returns a Boolean value indicating whether the view controller supports the specified orientation. (Deprecated in iOS 6.0. Override the supportedInterfaceOrientations andpreferredInterfaceOrientationForPresentation methods instead.)blog
实践后会发现,经过supportedInterfaceOrientations的单独控制是没法锁定屏幕的。内存
- -(NSUInteger)supportedInterfaceOrientations
- {
- return UIInterfaceOrientationMaskPortrait;
- }
屡次实验后总结出控制屏幕旋转支持方向的方法以下:ci
子类化UINavigationController,增长方法it
- - (BOOL)shouldAutorotate
- {
- return self.topViewController.shouldAutorotate;
- }
-
- - (NSUInteger)supportedInterfaceOrientations
- {
- return self.topViewController.supportedInterfaceOrientations;
- }
而且设定其为程序入口,或指定为 self.window.rootViewControllerio
随后添加本身的view controller,若是想禁止某个view controller的旋屏:(支持所有版本的控制)class
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation == UIInterfaceOrientationPortrait);
- }
-
- -(BOOL)shouldAutorotate
- {
- return NO;
- }
-
- -(NSUInteger)supportedInterfaceOrientations
- {
- return UIInterfaceOrientationMaskPortrait;
- }
若是想又开启某个view controller的所有方向旋屏支持:
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
- }
-
- -(NSUInteger)supportedInterfaceOrientations
- {
- return UIInterfaceOrientationMaskAllButUpsideDown;
- }
-
- -(BOOL)shouldAutorotate
- {
- return YES;
- }
从而实现了对每一个view controller的单独控制。
顺便提一下,若是整个应用全部view controller都不支持旋屏,那么干脆:
- - (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
- {
- return UIInterfaceOrientationMaskPortrait;
- }
下次再说说iOS6的内存控制吧
来源:http://blog.csdn.net/yiyaaixuexi/article/details/8035014