如何在iOS中实现这一目标？

Question

我指的是DMD Panorama应用程序.

如您所见,此图像的顶部有一个阴阳符号.

旋转设备后,两个符号会更接近,如下所示:

你能告诉我如何检测设备的旋转,这样当设备旋转时,这两个图像会更接近吗？

感谢您的回复.

Answer 1

在viewWillAppear函数中添加通知程序

-(void)viewWillAppear:(BOOL)animated{
[[NSNotificationCenter defaultCenter] addObserver:self  selector:@selector(orientationChanged:)  name:UIDeviceOrientationDidChangeNotification  object:nil];}

方向改变通知此功能

- (void)orientationChanged:(NSNotification *)notification{
[self adjustViewsForOrientation:[[UIApplication sharedApplication] statusBarOrientation]];}

进而调用此函数处理moviePlayerController框架的方向

- (void) adjustViewsForOrientation:(UIInterfaceOrientation) orientation {

if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown) 
{ 
    //load the portrait view    
}
else if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) 
{
    //load the landscape view 
}}

在viewDidDisappear中删除通知

-(void)viewDidDisappear:(BOOL)animated{
[[NSNotificationCenter defaultCenter]removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];}