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屏幕旋转

dazhizhi 2020-06-30 22:37 78 查看 https://blog.51cto.com/2254359

第一步

AppDelegate.h
里增加一个属性

@property (nonatomic, assign) NSInteger allowRotation;

用来区分哪个界面可以横屏

哪个界面不可以

第二步

AppDelegate.m
里增加一个方法

-(UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
if(self.allowRotation==1)
{
return UIInterfaceOrientationMaskAll;
}
else
{
return UIInterfaceOrientationMaskPortrait;
}
}

第三步

在需要横屏的界面调用以下代码即可

AppDelegate * appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
appDelegate.allowRotation = 1;
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIInterfaceOrientationPortrait] forKey:@"orientation"];
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger: UIDeviceOrientationLandscapeRight] forKey:@"orientation"];
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationPortraitUpsideDown] forKey:@"orientation"];
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationLandscapeLeft] forKey:@"orientation"];

Demo地址:https://github.com/YouZhiZheShiJingCheng/revolve/tree/master

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