recently in writing iwatch project, encountered a very wonderful problem. Run the demo with no problem, after I upgrade to watch OS Beta 3, I get my heart rate data and I can't find the cause of the error. Xcode does not give an error. Later to help his friends to change his project, found that many of his projects in my Xcode in the error, said that the method can not be found. And then I went into the header file to see, found that the method name changed. I later asked him about Xcode, only to find that the original Xcode 7 was just updated to Beta 4. And I'm still using Beta3 's original. And then it dawned on me. I have just been with the new iwatch system, it must have changed a lot of ways. Then I'll go to the official website to download the latest version of Xcode beta 4. Because the company let a person stomach ache of speed, full download a day to complete. The project was reopened, and there were many errors. Because the methods have changed greatly. So make sure your system and development tools (Xcode) are in use with beta-developed kids ' shoes. Are the latest versions. Because the next beta updates will be changed every time.
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X-code Beta Development iwatch project, run without errors, but some of the operation is a bit of a collapse, and find the cause of error scenario one
