導航欄在UIImagePickerController關閉後沒有響應

Question

僅在iOS 7上，使用UIImagePickerController後，我的應用中的導航欄不響應任何觸摸，然後解散（是否已選擇圖片）。導航欄下方的屏幕功能正常，但現在無法在應用中導航回來;用戶被困在這個屏幕上。

我從代碼啓動UIImagePickerController，但應用程序的其餘部分放在故事板中。

UIImagePickerController *mediaUI = [[UIImagePickerController alloc] init]; 
mediaUI.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; 
mediaUI.mediaTypes = [NSArray arrayWithObject:(NSString *) kUTTypeImage]; 
mediaUI.allowsEditing = NO; 
mediaUI.delegate = self; 
[controller presentModalViewController: mediaUI animated: YES]; 

在此先感謝您的幫助。

Answer 1

我注意到日誌顯示「啓動控制器的不平衡呼叫開始/結束外觀轉換」。當它出現時，我立即從另一個控制器啓動圖像選擇器控制器。這適用於iOS 8，但iOS 7需要延遲。我通過在短暫延遲後調用我的方法來修復它：

[self performSelector:@selector(takePicture) withObject:nil afterDelay:.1]; 

Answer 2

我希望你正確執行這些步驟！

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 

    [picker dismissViewControllerAnimated:YES completion:NULL]; 

} 

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { 

    [picker dismissViewControllerAnimated:YES completion:NULL]; 

} 

當你調用

UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
picker.delegate = self; 
picker.allowsEditing = YES; 
picker.sourceType = UIImagePickerControllerSourceTypeCamera; 

[self presentViewController:picker animated:YES completion:NULL];

乾杯！