ios屏幕旋转注意事项

下面是一些代码：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;

//返回yes表示支持屏幕的旋转哦，如果为no，你的view将不会跟随屏幕旋转

}

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {  

//屏幕将要转到时执行
    if (self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft || self.interfaceOrientation == UIInterfaceOrientationLandscapeRight) {  //如果是模向时执行啥事件
        // 重新加载一个Nib文件 
        //[[NSBundle mainBundle] loadNibNamed:@"LoginViewLandscape" owner:self options:nil]; 
        NSLog(@"cccccccccccccccccccc");   
       
       
    }else {  

//如果是纵向时执行啥事件
        // 重新加载一个Nib文件 
        // [[NSBundle mainBundle] loadNibNamed:@"LoginView" owner:self options:nil]; 
        NSLog(@"kkkkkkkkkkkkkkkkkkkkk");   
       
       
    } 
}

-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{    //屏幕转动结束后触发，跟上面的差不多，也可以调用这个
    if(fromInterfaceOrientation == UIInterfaceOrientationLandscapeLeft)
    {  //如果向左方向，显示提示框
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"弹窗"
                                                       message:@"左横屏"
                                                      delegate:self
                                             cancelButtonTitle:@"关闭"
                                             otherButtonTitles:nil];
        [alert show];
        [alert release];
    }
}