虽然在大多数情况下，方向对我的应用程序来说工作正常，但我在 iPad 1 上测试时遇到问题。如果我的设备倾斜角度相对较低，则有时会在选项卡中导航标签栏以横向模式显示，但页面调用纵向模式 uiview，然后尝试以横向模式呈现它，搞砸了我的 UI。
我想弄清楚是否有一种方法可以锁定“如果标签栏出现在横向模式下，总是调用横向 UIViews，如果在纵向模式下，总是调用纵向 UIView。”
在每个 View Controller 上，我都设置了以下内容:
- (void)viewDidLoad
{
[super viewDidLoad];
// iPad-specific condition here
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
if (UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation)){
self.view = self.portraitViewiPad;
}
else {
self.view = self.landscapeViewiPad;
}
}
}
-(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
// iPad-specific condition here
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
if (toInterfaceOrientation == UIInterfaceOrientationPortrait || toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) {
//show portrait XIB here
self.view = self.portraitViewiPad;
} else {
//show landscape XIB here
self.view = self.landscapeViewiPad;
}
}
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
// iPad-specific interface here
return YES;
}
else
{
// For iPhone and iPod touch interface
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
}
我还使用以下认为可以解决问题的方法调整了应用程序委托(delegate):
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{
//CALLS RELOAD METHODS HERE AND EACH UIVIEW IS PROPERLY BEING CALLED
}
更新:
通过检查状态栏的方向并相应地显示正确的 uiview 来更正此问题。以下是我如何更新我的 viewDidLoad 方法:
if ([[UIApplication sharedApplication] statusBarOrientation] == UIDeviceOrientationLandscapeLeft){
NSLog(@"Left landscape detected");
self.view = self.landscapeViewiPad;
} else if ([[UIApplication sharedApplication] statusBarOrientation] == UIDeviceOrientationLandscapeRight){
NSLog(@"Right landscape detected");
self.view = self.landscapeViewiPad;
} else if ([[UIApplication sharedApplication] statusBarOrientation] == UIDeviceOrientationPortrait){
NSLog(@"Portrait orientation detected");
self.view = self.portraitViewiPad;
} else if ([[UIApplication sharedApplication] statusBarOrientation] == UIDeviceOrientationPortraitUpsideDown){
NSLog(@"Upsidedown Portrait detected");
self.view = self.portraitViewiPad;
}
最佳答案
我认为您不想测试 [[UIDevice currentDevice] orientation]。正如文档所指出的那样，值可能与应用程序 UI 的实际方向不同。我认为您需要依赖对 [UIViewController shouldRotateTo...] 和 [UIViewController willRotateTo...] 的调用。
关于iphone - UITabBar 识别纵向或横向方向，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10585832/