iOS6的旋屏控制技巧,ios6技巧
在iOS5.1 和 之前的版本中, 我們通常利用 shouldAutorotateToInterfaceOrientation: 來單獨控制某個UIViewController的旋屏方向支援,比如:
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation == UIInterfaceOrientationPortrait);
- }
但是在iOS6中,這個方法被廢棄了,使用無效。
shouldAutorotateToInterfaceOrientation:
Returns a Boolean value indicating whether the view controller supports the specified orientation. (Deprecated in iOS 6.0. Override the supportedInterfaceOrientations andpreferredInterfaceOrientationForPresentation methods instead.)
實踐後會發現,通過supportedInterfaceOrientations的單獨控制是無法鎖定螢幕的。
- -(NSUInteger)supportedInterfaceOrientations
- {
- return UIInterfaceOrientationMaskPortrait;
- }
多次實驗後總結出控制旋轉螢幕支援方向的方法如下:
子類化UINavigationController,增加方法
- - (BOOL)shouldAutorotate
- {
- return self.topViewController.shouldAutorotate;
- }
-
- - (NSUInteger)supportedInterfaceOrientations
- {
- return self.topViewController.supportedInterfaceOrientations;
- }
並且設定其為程式入口,或指定為 self.window.rootViewController
隨後添加自己的view controller,如果想禁止某個view controller的旋屏:(支援全部版本的控制)
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation == UIInterfaceOrientationPortrait);
- }
-
- -(BOOL)shouldAutorotate
- {
- return NO;
- }
-
- -(NSUInteger)supportedInterfaceOrientations
- {
- return UIInterfaceOrientationMaskPortrait;
- }
如果想又開啟某個view controller的全部方向旋屏支援:
- - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
- {
- return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
- }
-
- -(NSUInteger)supportedInterfaceOrientations
- {
- return UIInterfaceOrientationMaskAllButUpsideDown;
- }
-
- -(BOOL)shouldAutorotate
- {
- return YES;
- }
從而實現了對每個view controller的單獨控制。
順便提一下,如果整個應用所有view controller都不支援旋屏,那麼乾脆:
- - (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
- {
- return UIInterfaceOrientationMaskPortrait;
- }
iOS613有智可以調節螢幕技術?
手機耳機上方有一小黑條就是感應器,你可以那個電筒照拿個小黑條會變亮離開亮的地方就變暗。