我也面临同样的问题。

添加一个新的图像集到XcodeAssets。 将图像添加到映像集中。 添加图像视图，以启动屏幕和设置您的imageset为图像 在Imageview的属性检查器中，取消选中“清除图形上下文” 清理生成文件夹并再次运行。

You have to make sure that the file name of your image has a format like .png or .jpg at the end otherwise it will not work. Also, before adding your image, you have to make sure that the image file is in your "Assets.xcassets" folder within your project. This can be done with a simple drag and drop. Also, make sure when you've added your image to your storyboard that the image name in the top left also matches the real image file name. I would try looking into Constraints too. Hope this helps. Good luck with your App.

在投入了大量的时间后，我得到了解决方案:-

Step 1:- Quit Xcode
Step 2:- Delete the app from device/simulator
Step 3:- Restart your device (if you are using simulator then you have to quit simulator)
Step 4:- Clear all derived data 
Step 5:- Clear Bin
Step 6:- Open Xcode and relaunch the app, it will work 

我的问题。

原因:我在拖拽到Xcode后重命名了图片。 解决方案:在拖拽到Xcode后不要重命名图像。这给理解Xcode带来了问题。在拖动或添加到Xcode之前重命名图像。

希望它能帮助你!

我有启动屏幕文件命名，但它不存在。当我删除这个我的发射图像出现。

在这个问题上加上我的0.02美元;我通过使用PNG图像而不是JPG/JPEG图像解决了这个问题。

在将图像转换为PNG并将其压缩以减小大小之后，一切都很正常。