Question

我需要知道如何在iPhone SDK中打开图库。我相信我的代码是正确的，但我仍然有例外。

这是我的代码：

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
        imgpkrController.delegate = self;
        imgpkrController.allowsEditing = YES;
        imgpkrController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        //[self presentModalViewController:(UIViewController *)imgpkrController animated:YES];

        [self presentViewController:(UIViewController *)imgpkrController animated:YES completion:nil];}

使用此代码即可获得异常：

UIApplicationInvalidInterfaceOrientation', reason:
  preferredInterfaceOrientationForPresentation must return a supported interface orientation!

所以我尝试了这段代码：

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
        UIInterfaceOrientation interface = [[UIApplication sharedApplication] statusBarOrientation];
        if(interface == UIDeviceOrientationPortrait)
        {
            imgpkrController.delegate = self;
            imgpkrController.allowsEditing = YES;
            imgpkrController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
            //[self presentModalViewController:(UIViewController *)imgpkrController animated:YES];

            [self presentViewController:(UIViewController *)imgpkrController animated:YES completion:nil];

        }else if (interface ==UIDeviceOrientationLandscapeLeft || interface ==UIDeviceOrientationLandscapeRight)
        {
            imgpkrController.delegate = self;
            imgpkrController.allowsEditing = YES;
            imgpkrController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
            //[self presentModalViewController:(UIViewController *)imgpkrController animated:YES];
            [self presentViewController:(UIViewController *)imgpkrController animated:YES completion:nil];}}

但这给出了同样的例外。任何人都可以帮我解决这个问题吗？

Answer 1

我认为您使用的早期代码没有任何问题。为此目的继续使用该代码。我认为 UIInterfaceOrientation 中的代码存在问题。你可以试试这个Go to Target-＆gt;总结 - ＆gt;然后尝试从那里处理方向。

如果这没有用，那么您需要在以下链接中研究UIInterfaceOrientation

http://www.scott-sherwood.com/ios-6-uiapplicationinvalidinterfaceorientation-exception/

如何在iPhone上打开图库以选择图像？

1 个答案: