objective-c - ios强制设备旋转

Question

这是我的代码:

  if ([[UIApplication sharedApplication] statusBarOrientation] != UIInterfaceOrientationLandscapeLeft) {
      [appDelegate makeTabBarHidden:TRUE];
      self.navigationController.navigationBarHidden = YES;
      [UIView beginAnimations:@"newAlbum" context:NULL];
      [UIView setAnimationDelegate:self];
      [UIView setAnimationDidStopSelector:@selector(addResultGraph)];
      [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:YES];
      // Then rotate the view and re-align it:
      CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation( 90.0 * M_PI / -180.0 );
      landscapeTransform = CGAffineTransformTranslate( landscapeTransform, +90.0, +90.0 );
      [self.navigationController.view setTransform:landscapeTransform];
      [UIView commitAnimations];
  }

这样，从肖像模式开始，新的viewcontroller会以landscapeleft模式显示，并且一切正常，但是我的问题是:如果我以纵向模式从横向模式旋转设备，则状态栏会以纵向模式出现，而viewcontroller仍处于横向模式...

我该如何解决？
提前致谢!

Answer 1

您可以重新实现shouldAutorotateToInterfaceOrientation方法并执行类似的操作

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}

这样，您只能启用向左方向，并且如果将设备旋转为纵向，界面将不会旋转