当我打开 xcode是创建新的工程文件还是点开文件playground
第二个问题：在哪里提交文件和申请参赛
感谢您的回复。
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Hi ,
I found the problem while writing the program
When I use XCODE file single view .. playgrounds
how to set up then app in IPAD?
Looking forward to your reply :
thanks :)