iphone：點擊按鈕將旋轉視圖

Question

我嘗試手動旋轉視圖時出現問題。例如，我有一個視圖控制器在橫向上運行，並且我在該視圖上有一個按鈕。我想點擊該按鈕強制將視圖旋轉爲縱向（倒置縱向）。我搜索但找不到答案。

感謝您的幫助

Answer 1

你可以試試這個：

- (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)]; 

    } 

}