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UIImagePickerController显示黑色预览屏幕

调用UIImagePickerController使用相机时遇到问题.有时,但往往没有,预览屏幕显示为黑色(因为相机本身被覆盖).在做了一些研究后,似乎没有正确委托它的人......但是,我相信我的设置是正确的.重新启动应用程序是修复它的原因.

在我的.h文件中,我包含了UIImagePickerControllerDelegate和UINavigationControllerDelegate.

这是.m文件的代码

- (IBAction)camera:(id)sender {
        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

    #if TARGET_IPHONE_SIMULATOR
        imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    #else
        imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
    #endif
        imagePickerController.editing = YES;
        imagePickerController.delegate = self;
        [self presentViewController:imagePickerController animated:YES completion:nil];
    }
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关于为什么会发生这种情况的任何想法?

谢谢

uiimagepickercontroller ios

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