iOS Development--Error summary & common errors and warnings in development summary (27)

Summary of common errors and warnings in development (27)

Project Summary

Error One: index 4 beyond bounds [1.. 3]

solution: Array angle label out of bounds

Error Two: This class was not key value coding-compliant for the key label

Solution: The connection error, generally did not delete the corresponding connection

Error Three: Unrecognized selector sent to Intsnace xxxxxxxxx

solution: The corresponding method is not correct, it may be that the method is not implemented, or does not exist, more is the xib in the corresponding code in the wrong way

iOS Development--Error summary & common errors and warnings in development summary (27)