需求如下：
1.app整体只能竖屏，部分页面才可以横屏
2.app整体只能竖屏，部分页面也是竖屏，但是点击某个按钮可以使当前页面变为横屏，如全屏视频播放键。
需求1解决方法：
1.在targets - general中设置设备支持方向如下，确保设备各个方法均支持
屏幕快照 -12-08 下午6.41.26.png
2.在appdelegate的.h文件声明属性来标记当前设备方向@property(assign,nonatomic)UIInterfaceOrientationinterfaceOrientation;
在appdelegate的.m文件中：-(UIInterfaceOrientationMask)application:(UIApplication*)applicationsupportedInterfaceOrientationsForWindow:(nullableUIWindow*)window{
if(self.interfaceOrientation==UIInterfaceOrientationUnknown){//直播间用
returnUIInterfaceOrientationMaskAllButUpsideDown;
}elseif(self.interfaceOrientation==UIInterfaceOrientationLandscapeRight){
//交易页面横屏用
returnUIInterfaceOrientationMaskLandscapeRight;
}else{returnUIInterfaceOrientationMaskPortrait;
}
}
3.在需要横屏的ViewController的ViewWillApper方法里面：Appdelegate*delegate=p.p1[UIApplicationsharedApplication].delegate;
delegate.canRotate=YES;
需求2解决方法：
方法1：
1.在targets - general中设置设备支持方向如下，确保整体都是竖屏
屏幕快照 -12-08 下午6.30.25.png
2.在横屏(如button点击)事件处，代码如下-(void)fullScreenBtnAction{if(_isNormalOrientation){//如果当前是默认的竖屏
//注：当前self是UIView对象，如果是VC，则为self.view.....
self.frame=CGRectMake(0,0,kScreenSize.height,kScreenSize.width);CGRectframe=[UIScreenmainScreen].applicationFrame;//transfrom会以当前center为锚点旋转，所以旋转后位置有偏移，需要处理
CGPointcenter=CGPointMake(frame.origin.x+ceil(frame.size.width/2),frame.origin.y+ceil(frame.size.height/2));self.center=center;
//取状态栏旋转时间//CGFloatduration=[UIApplicationsharedApplication].statusBarOrientationAnimationDuration;
[UIViewbeginAnimations:nilcontext:nil];
[UIViewsetAnimationDuration:0.3];self.transform=CGAffineTransformMakeRotation(M_PI_2);
[UIViewcommitAnimations];
}else{
[UIViewbeginAnimations:nilcontext:nil];
[UIViewsetAnimationDuration:0.3];self.transform=CGAffineTransformIdentity;
[UIViewcommitAnimations];//_originRect是进入横屏前self的frame
self.frame=_originRect;
}
_isNormalOrientation=!_isNormalOrientation;//更改状态}
***方法2：
1.在targets - general中设置设备支持方向如下，确保设备各个方法均支持 (弃用 可不设置)
屏幕快照 -12-08 下午6.41.26.png
2.在appdelegate的.h文件声明属性interfaceOrientation标记方向@property(assign,nonatomic)UIInterfaceOrientationinterfaceOrientation;
在appdelegate的.m文件中实现设备方向方法：-(UIInterfaceOrientationMask)application:(UIApplication*)applicationsupportedInterfaceOrientationsForWindow:(nullableUIWindow*)window{
if(self.interfaceOrientation==UIInterfaceOrientationUnknown){//直播间用
returnUIInterfaceOrientationMaskAllButUpsideDown;
}elseif(self.interfaceOrientation==UIInterfaceOrientationLandscapeRight){//交易页面横屏用
returnUIInterfaceOrientationMaskLandscapeRight;
}else{returnUIInterfaceOrientationMaskPortrait;
}
}横竖屏转换：//转换到竖屏-(void)rotateToPortraitScreenWithInvocation{
AppDelegate*delegate=(AppDelegate*)[UIApplicationsharedApplication].delegate;
SELselector=NSSelectorFromString(@"setOrientation:");
NSInvocation*invocation=[NSInvocationinvocationWithMethodSignature:[UIDeviceinstanceMethodSignatureForSelector:selector]];
[invocationsetSelector:selector];
[invocationsetTarget:[UIDevicecurrentDevice]];
intval=UIDeviceOrientationPortrait;
[invocationsetArgument:&valatIndex:2];
[invocationinvoke];
delegate.interfaceOrientation=UIInterfaceOrientationPortrait;
}//转换到横屏模式-(void)rotateToLandscapWithIncovation{
AppDelegate*delegate=(AppDelegate*)[UIApplicationsharedApplication].delegate;
delegate.interfaceOrientation=UIInterfaceOrientationUnknown;
SELselector=NSSelectorFromString(@"setOrientation:");
NSInvocation*invocation=[NSInvocationinvocationWithMethodSignature:[UIDeviceinstanceMethodSignatureForSelector:selector]];
[invocationsetSelector:selector];
[invocationsetTarget:[UIDevicecurrentDevice]];
intval=UIInterfaceOrientationLandscapeRight;
[invocationsetArgument:&valatIndex:2];
[invocationinvoke];
}
作者：CoderYZY
链接：/p/95cdf3262bc6
