iphone：点击按钮将旋转视图

Question

我尝试手动旋转视图时出现问题。例如，我有一个视图控制器在横向上运行，并且我在该视图上有一个按钮。我想点击该按钮强制将视图旋转为纵向（倒置纵向）。我搜索但找不到答案。

感谢您的帮助

Answer 1

你可以试试这个：

- (void)buttonPressed { 

    // check current orientation 
    if ([[UIApplication sharedApplication] statusBarOrientation] != UIDeviceOrientationLandscapeLeft) { 

     // no, the orientation is wrong, we must rotate the UI 
     self.view.userInteractionEnabled = NO; 

     // setup status bar 
     [[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationLandscapeLeft animated:NO]; 
     // rotate main view, in this sample the view of navigation controller is the root view in main window 
     [self.view setTransform: CGAffineTransformMakeRotation(M_PI/2)]; 
     // set size of view 
     [self.view setFrame:CGRectMake(0, 0, 748, 1024)]; 

    } 

}