auto layout on ios versions prior to 6.0

　　The problem is that I discovered when tested with a Demo, the problem shown below:

　　The cause of the problem is in the right Builds for options, and I chose iOS 5.0 and Later, and check the "Use Auto Layout", was the emergence of this mistake. From the error message you may also know the solution, just remove the tick "Use Auto Layout" option to, as shown below.

 

 

 

 

 

Reproduced in: https: //www.cnblogs.com/eagle927183/p/3633251.html