viewWillAppear上statusBarOrientation的值错误

Question

我需要根据方向更改视图的图像背景.为此,我使用statusBarOrientation方法viewWillAppear:

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    UIInterfaceOrientation currentOrientation = [[UIApplication sharedApplication] statusBarOrientation];
    if (UIInterfaceOrientationIsPortrait(currentOrientation)) {
        NSLog(@"PORTRAIT");
    } else if (UIInterfaceOrientationIsLandscape(currentOrientation)) {
        NSLog(@"LANDSCAPE");
    }   
}

问题是控制台总是显示PORTRAIT,即使iPad处于横向模式.相同的代码viewDidAppear工作正常,但为时已晚,用户可以看到图像的变化.这让我觉得statusBarOrientation的正确状态仍然不可用viewWillAppear,但我已经读过其他一些问题,这段代码应该在那里工作.

Answer 1

尝试

int type = [[UIDevice currentDevice] orientation];
    if (type == 1) {
        NSLog(@"portrait default");
    }else if(type ==2){
        NSLog(@"portrait upside");
    }else if(type ==3){
        NSLog(@"Landscape right");
    }else if(type ==4){
        NSLog(@"Landscape left");
    }