ios - UIImagePickerControllerSourceType.SavedPhotosAlbum调用黑屏

Question

我需要从用户图库中获取图像。这适用于 UIImagePickerControllerSourceType.Camera 但是当我用 UIImagePickerControllerSourceType.SavedPhotosAlbum 调用 UIImagePickerController 时，我得到一个黑色图像:

这是我的代码:

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        let picker : TGMImagePicker = segue.destinationViewController as TGMImagePicker
        if segue.identifier == "Camera" {
            picker.sourceType = UIImagePickerControllerSourceType.Camera
        } else if segue.identifier == "Library" {
            picker.sourceType = UIImagePickerControllerSourceType.SavedPhotosAlbum
        }

        picker.setCaptureBlock { (image) -> Void in
            self.userImageView.image = image
        }
    }

Answer 1

哇，就在我发表评论时，我找到了解决方案。如果你还在寻找，对我来说关键是添加初始化 pickercontroller 的顶行:

if(segue.identifier == "presentCameraPicker"){
        var nextVC = cameraPickerController()
        nextVC = segue.destinationViewController as cameraPickerController
        nextVC.sourceType = UIImagePickerControllerSourceType.Camera
}else if(segue.identifier == "presentPhotoPicker"){
       var nextVC = cameraPickerController()
        nextVC = segue.destinationViewController as cameraPickerController
        nextVC.sourceType = UIImagePickerControllerSourceType.SavedPhotosAlbum
}

请注意，我在我的 Storyboard 中对同一个 View Controller 使用了两个不同的转场。一个用于相机选择器的是模式演示，一个用于照片选择器的是弹出窗口。