1、info中支持所有的方向
2、APPDelega.h中添加属性
@property (nonatomic,assign) BOOL allowRotate;
APPdelegate.m中实现方法
//此方法会在设备横竖屏变化的时候调用
- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
if (_allowRotate) {
return UIInterfaceOrientationMaskAll;
}else{
return UIInterfaceOrientationMaskPortrait;
}
}
3、在需要旋转的单个页面中添加
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
AppDelegate * delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
delegate.allowRotate = YES;
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
AppDelegate * delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
delegate.allowRotate = NO;
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 = UIInterfaceOrientationPortrait;
[invocation setArgument:&val atIndex:];
[invocation invoke];
}
}
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {
// 屏幕从竖屏变为横屏时执行
NSLog(@"屏幕从竖屏变为横屏");
}else{
// 屏幕从横屏变为竖屏时执行
NSLog(@"屏幕从横屏变为竖屏");
}
}
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
// do something after rotation
}
后话
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientChange:) name:UIDeviceOrientationDidChangeNotification object:[UIDevice currentDevice]];
- (void)orientChange:(NSNotification *)notification {
UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;
if (orientation == UIDeviceOrientationLandscapeLeft) {
NSLog(@"notification: 屏幕从竖屏变为横屏");
} else if (orientation == UIDeviceOrientationLandscapeRight) {
NSLog(@"notification: 屏幕从竖屏变为横屏");
} else if (orientation == UIDeviceOrientationPortrait) {
NSLog(@"notification: 屏幕从横屏变为竖屏");
}
}