ios6,ios7强制转屏

在父视图控制器里面写如下代码

-(void)setViewOrientation:(UIInterfaceOrientation )orientation{    if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {        [[UIDevice currentDevice] performSelector:@selector(setOrientation:)                                       withObject:(id)orientation];    }    [UIViewController attemptRotationToDeviceOrientation];//这句是关键}-(NSUInteger)supportedInterfaceOrientations{    return UIInterfaceOrientationMaskPortrait;}-(BOOL)shouldAutorotate{    return YES;}- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{    return toInterfaceOrientation==UIInterfaceOrientationPortrait;}

在子视图控制器的加入，这里子视图控制器要横屏

- (void)viewWillAppear:(BOOL)animated{    [super viewWillAppear :YES];    [self setViewOrientation:UIInterfaceOrientationLandscapeRight];}
//重写下面子类的方法

- (NSUInteger) supportedInterfaceOrientations{

    returnUIInterfaceOrientationMaskLandscapeRight;

}

 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation NS_DEPRECATED_IOS(2_0, 6_0){

    return toInterfaceOrientation == UIInterfaceOrientationLandscapeRight;

}