如何打開iPhone上的圖庫以選擇圖像？

Question

我需要知道如何在iPhone SDK中打開圖庫。我相信我的代碼是正確的，但我仍然得到一個例外。

這是我的代碼：

-(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];} 

通過使用此代碼我得到異常：

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

所以，我想這個代碼：

-(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];}} 

但是這給同樣的例外。有人能幫我解決這個問題嗎？

Answer 1

我不認爲你之前使用的代碼有任何問題。繼續爲此使用該代碼。我認爲UIInterfaceOrientation中的代碼存在問題。你可以試試這個轉到Target-> Summery - >，然後嘗試從那裏處理方向。

如果不那麼幫你需要學習有關UIInterfaceOrientation在以下鏈接

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