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1、 开发的时候已竖屏的尺寸开发
    self.view.frame = CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width);
2、 旋转视图
   //设置状态栏
    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:NO];
    CGFloat duration = [UIApplication sharedApplication].statusBarOrientationAnimationDuration;
    //设置旋转动画
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:duration];
    //设置导航栏旋转
    self.navigationController.navigationBar.frame = CGRectMake(-204,224, [[UIScreen mainScreen] bounds].size.height, 32);
    self.navigationController.navigationBar.transform = CGAffineTransformMakeRotation(M_PI*1.5);
    //设置视图旋转
    self.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
    self.view.transform = CGAffineTransformMakeRotation(M_PI*1.5);
    [UIView commitAnimations];

    self.view.bounds = CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width);
    
说明：1）这里要注意状态栏的方向和试图旋转方向保持一致性
     2）必须自己设置类自身的bounds
     3）状态栏旋转必须重写方法shouldAutorote方法
-(BOOL)shouldAutorotate
{
    return NO;
}