方法一：通知中心监听
name:
// UIDeviceOrientationDidChangeNotification 允许方向改变的情况下，监听设备方向，与电池条无关
// UIApplicationDidChangeStatusBarOrientationNotification 允许方向改变的情况下，监听电池条方向
-(void)notifitionSatatus{
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(statusBarOrientationChange:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
}
-(void)statusBarOrientationChange:(NSNotification*)notification{
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if (orientation == UIInterfaceOrientationLandscapeRight) // home键靠右
{
}
if (orientation ==UIInterfaceOrientationLandscapeLeft) // home键靠左
{
}
if (orientation == UIInterfaceOrientationPortrait)//home在下
{
}
if (orientation == UIInterfaceOrientationPortraitUpsideDown)
{
}
NSLog(@"%ld",orientation);
}
注意：在没有打开屏幕旋转的情况下，该通知无效
另外：viewcontrller内部控制及代理
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
} - (BOOL)shouldAutorotate
{
return YES;
} - (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskAll;
}
//
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
NSLog(@"UIViewController will rotate to Orientation: %d", toInterfaceOrientation);
} - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
NSLog(@"did rotated to new Orientation, view Information %@", self.view);
}
appdelegate中有相应改变其旋转方向的方法
-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
if (self.allowRotation) {
return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
}
return UIInterfaceOrientationMaskPortrait;
}
方法二：陀螺仪监测
- (void)startMotionManager{
if (_motionManager == nil) {
_motionManager = [[CMMotionManager alloc] init];
}
//检测时间间隔
_motionManager.deviceMotionUpdateInterval = 1.0;
if (_motionManager.deviceMotionAvailable) {
NSLog(@"Device Motion Available");
[_motionManager startDeviceMotionUpdatesToQueue:[NSOperationQueue currentQueue]
withHandler: ^(CMDeviceMotion *motion, NSError *error){
[self performSelectorOnMainThread:@selector(handleDeviceMotion:) withObject:motion waitUntilDone:YES];
}];
} else {
NSLog(@"No device motion on device.");
[self setMotionManager:nil];
}
}
- (void)handleDeviceMotion:(CMDeviceMotion *)deviceMotion{
double x = deviceMotion.gravity.x;
double y = deviceMotion.gravity.y;
if (fabs(y) >= fabs(x))
{
if (y >=){
//UIDeviceOrientationPortraitUpsideDown;
[self.delegate actionWithDeviceOrientation:UIDeviceOrientationPortraitUpsideDown];
}
else{
// UIDeviceOrientationPortrait;
[self.delegate actionWithDeviceOrientation:UIDeviceOrientationPortrait];
}
}
else
{
if (x >= ){
// UIDeviceOrientationLandscapeRight;
[self.delegate actionWithDeviceOrientation:UIDeviceOrientationLandscapeRight];
}
else{
// UIDeviceOrientationLandscapeLeft;
[self.delegate actionWithDeviceOrientation:UIDeviceOrientationLandscapeLeft];
}
}
}
//停止检测
-(void)endMotionManager{
[_motionManager stopDeviceMotionUpdates];
}