iOS指定页面默认横屏，自由切换
1、修改工程的info.plist中”Supported interface orientations”的值（一般在工程的Taget-> General -> Deployment Info -> Device Orientation处打钩来选择设备支持）
2、实现工程的AppDelegate文件中的（application:supportedInterfaceOrientationsForWindow:）方法，在此方法中返回程序支持的方向枚举。
iOS 横竖屏设置
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| UIInterfaceOrientationMaskLandscape 支持左右横屏
UIInterfaceOrientationMaskAll 支持四个方向旋转
UIInterfaceOrientationMaskAllButUpsideDown 支持除了UpsideDown以外的旋转
-(BOOL)shouldAutorotate{
return YES;
}
- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskAllButUps
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1、先在AppDelegate中重写supportedInterfaceOrientationsForWindow方法
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| -(UIInterfaceOrientationMask)application:(UIApplication*)application supportedInterfaceOrientationsForWindow:(UIWindow*)window{
return UIInterfaceOrientationMaskAll;
}
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2、创建一个UINavigationController的子类BaseNaviController，设置self.window的RootViewController为BaseNaviController;
然后，我们在BaseNaviController.m文件里面也实现着两个方法：
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| -(BOOL)shouldAutorotate
{
return [self.topViewController shouldAutorotate];
}
-(UIInterfaceOrientationMask)supportedInterfaceOrientations
{
return [self.topViewController supportedInterfaceOrientations];
}
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3.在第一个页面写上，支持旋转 但是这个页面只支持竖屏，代码：
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|
-(BOOL)shouldAutorotate{
return YES;
}
- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskPortrait;
}
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4.第二个页面我们写上，我们所需要的横屏效果，代码：
当只需要锁定屏幕的旋转不需要设置屏幕的旋转方向 ( 方向固定是竖直)
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| // 是否支持屏幕旋转
-(BOOL)shouldAutorotate {
return NO;
}
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开启屏幕旋转并设置屏幕旋转支持的方向
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|
-(BOOL)shouldAutorotate {
return NO;
}
- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskAll;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
};
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对于非modal模式的viewController:如果不是rootViewController,则重写supportedInterfaceOrientations,preferredInterfaceOrientationForPresentation以及shouldAutorotate方法, 按照当前viewController的需要返回响应的值.如果是rootViewController,则如下重写方法:
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| -(NSUInteger)supportedInterfaceOrientations{
return self.topMostViewController.supportedInterfaceOrientations;
}
-(BOOL)shouldAutorotate{
return [self.topMostViewController shouldAutorotate];
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
return [self.topMostViewController preferredInterfaceOrientationForPresentation];
}
-(UIViewController*)topMostViewController{
//找到当前正在显示的viewController并返回.
}
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显而易见, 我们巧妙的绕开了UIKit只调用rootViewController的方法的规则. 把决定权交给了当前正在显示的viewController.
对于modal模式的viewController. 则按照需要重写supportedInterfaceOrientations,
preferredInterfaceOrientationForPresentation以及shouldAutorotate 方法即可.
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| UIApplication* app = [UIApplication sharedApplication];
// 判断设备方向状态，做响应的操作
if(app.statusBarOrientation == UIInterfaceOrientationPortrait || app.statusBarOrientation == UIInterfaceOrientationPortraitUpsideDown){
}else if(app.statusBarOrientation == UIInterfaceOrientationLandscapeLeft || app.statusBarOrientation == UIInterfaceOrientationLandscapeRight){
}
UIInterfaceOrientationPortrait---------按钮在下
UIInterfaceOrientationPortraitUpsideDown---------按钮在上
UIInterfaceOrientationLandscapeLeft---------按钮在左
UIInterfaceOrientationLandscapeRight---------按钮在右
// 通过状态栏电池图标来判断屏幕方向
if ([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationMaskPortrait) {
// 竖屏 balabala
} else {
// 横屏 balabala
}
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AppDelegate.m中有如下方法可以设置整个app的方向。
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| - (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
return UIInterfaceOrientationMaskLandscape;
}
该方法实质上是制定window的方向，虽然一个app有多个VC，但是window都只有一个，所以这个指定了window的方向，那所有VC的方向就都是统一的。
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已废弃方法
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| shouldAutorotateToInterfaceOrientation //在iOS6之前
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http://www.jianshu.com/p/f917df3e3b2e
视频播放器全屏旋转实现
https://github.com/JR-Dun/iOSRotationScreen
https://github.com/linsyorozuya/AutoRotateControlDemo
https://github.com/Jude309307972/RotateDemo
https://github.com/janicezhw/TestAutoRotation
