Ios 当sourceType为照片库时未调用UIImagePickerController委托

我有一个问题，当呈现sourceType=UIImagePickerController源类型PhotoLibrary时，UIImagePickerController的委托没有被调用

奇怪的是，它在照相机模式下工作得非常好

接口声明：

@interface ChatVC : UIViewController <UIActionSheetDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>

下面是同一视图控制器中的委托方法实现：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary<NSString *,id> *)editingInfo {
    NSLog(@"Image Picker Controller Picked Image - Deprecated");
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    NSLog(@"Image Picker Controller Picked Image");    
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    NSLog(@"Image Picker Controller Cancelled");
    [picker dismissViewControllerAnimated:YES completion:nil];
}

-（无效）图像选择器控制器：（UIImagePickerController*）选择器未完成图像：（UIImage*）图像编辑信息：（NSDictionary*）编辑信息{
NSLog（@“图像选择器控制器拾取的图像-已弃用”）；
[picker DismissionViewControllerInitiated:是完成：无]；
}
-（void）imagePickerController:（UIImagePickerController*）picker未使用信息完成PickingMediaWithInfo:（NSDictionary*）信息{
NSLog（@“图像选择器控制器拾取的图像”）；
[picker DismissionViewControllerInitiated:是完成：无]；
}
-（无效）ImagePickerController IDCancel:（UIImagePickerController*）选择器{
NSLog（@“图像选择器控制器已取消”）；
[picker DismissionViewControllerInitiated:是完成：无]；
}

在摄影机模式下打开时，一切正常，我可以看到调用了相应的委托方法

但当以照片库模式打开并选择照片时，不会发生任何事情，也不会调用委托方法。然而，当我点击Cancel按钮时，我可以看到-ImagePickerControllerdCancel:delegate方法被调用

我甚至怀疑内存警告会以某种方式使委托无效，但这里的情况并非如此

请有人帮我解决这个问题

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提前谢谢

您使用什么版本的Xcode、iOS和什么设备测试此功能？@rmaddy感谢您的回复。我已经用iOS 8和iOS 9在模拟器和设备上进行了测试。Xcode 7.1版。使用您附带的代码，它工作得非常好。调用了

imagePickerController:didFinishPickingMediaWithInfo:

。在iO8.4/9.1模拟器上测试。@trick14是的，我知道。它应该工作得很好。但问题是，它没有像预期的那样工作，并且想知道应用程序的其他部分可能出现什么问题？有什么想法吗？你能分享一下这个项目吗？我确信您附加的源代码没有问题。

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary<NSString *,id> *)editingInfo {
    NSLog(@"Image Picker Controller Picked Image - Deprecated");
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    NSLog(@"Image Picker Controller Picked Image");    
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    NSLog(@"Image Picker Controller Cancelled");
    [picker dismissViewControllerAnimated:YES completion:nil];
}