在AppDelegate中添加方法關(guān)閉橫豎屏切換,方法如下
1.AppDelegate.h中外露一個(gè)屬性
@property(nonatomic,assign)BOOL allowRotation;//是否允許轉(zhuǎn)向
2.AppDelegate.m中添加方法(如果屬性值為YES,僅允許屏幕向左旋轉(zhuǎn),否則僅允許豎屏)
- (UIInterfaceOrientationMask)application:(UIApplication
*)application supportedInterfaceOrientationsForWindow:(nullable UIWindow
*)window
{
? ? if (_allowRotation == YES) {
? ? ? ? return UIInterfaceOrientationMaskLandscapeLeft;
? ? }else{
? ? ? ? return (UIInterfaceOrientationMaskPortrait);
? ? }
}
第三步:
1.在需要強(qiáng)制橫屏的控制器.m中添加旋轉(zhuǎn)為橫屏方法
- (void)setNewOrientation:(BOOL)fullscreen
{
if (fullscreen) {
? ? ? ? NSNumber *resetOrientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationUnknown];
? ? ? ? [[UIDevice currentDevice] setValue:resetOrientationTarget forKey:@"orientation"];
? ? ? ? NSNumber *orientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeLeft];
? ? ? ? [[UIDevice currentDevice] setValue:orientationTarget forKey:@"orientation"];
? ? }else{
? ? ? ? NSNumber *resetOrientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationUnknown];
? ? ? ? [[UIDevice currentDevice] setValue:resetOrientationTarget forKey:@"orientation"];
? ? ? ? NSNumber *orientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
? ? ? ? [[UIDevice currentDevice] setValue:orientationTarget forKey:@"orientation"];
? ? }
}
2.view DidLoad中添加以下代碼
AppDelegate * appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
? ? appDelegate.allowRotation = YES;//(以上2行代碼,可以理解為打開橫屏開關(guān))
[self setNewOrientation:YES];//調(diào)用轉(zhuǎn)屏代碼
3.重寫導(dǎo)航欄返回箭頭按鈕,拿到返回按鈕點(diǎn)擊事件
- (void)back
{
? ? AppDelegate * appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
? ? appDelegate.allowRotation = NO;//關(guān)閉橫屏僅允許豎屏
? ? [self setNewOrientation:NO];
? ? [self.navigationController popViewControllerAnimated:YES];
}
