iOS两个强制旋转屏幕的方法

// 第一个- (void)doForceScreenRotate(){    // 状态栏动画持续时间    CGFloat duration = [UIApplication sharedApplication].statusBarOrientationAnimationDuration;    [UIView animateWithDuration:duration animations:^{    // 修改状态栏的方向及view的方向进而强制旋转屏幕        [[UIApplication sharedApplication] setStatusBarOrientation:_bottomView.landscapeModel?UIInterfaceOrientationLandscapeRight:UIInterfaceOrientationPortrait];        self.navigationController.view.transform = _bottomView.landscapeModel ? CGAffineTransformMakeRotation(M_PI_2) : CGAffineTransformIdentity;        self.navigationController.view.bounds = CGRectMake(self.navigationController.view.bounds.origin.x, self.navigationController.view.bounds.origin.y, self.view.frame.size.height, self.view.frame.size.width);    }];}

//第二个：//非arc：- (void)doForceScreenRotate2 {    if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]){        [[UIDevice currentDevice] performSelector:@selector(setOrientation:) withObject:(id)UIInterfaceOrientationLandscapeRight];    }}

//arc下：- (void)doForceScreenRotate3 {    if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {        SEL selector = NSSelectorFromString(@"setOrientation:");        NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];        [invocation setSelector:selector];        [invocation setTarget:[UIDevice currentDevice]];        int val = UIInterfaceOrientationLandscapeRight;        [invocation setArgument:&val atIndex:2];        [invocation invoke];    }}