If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
X-Code7报错: :CGContextTranslateCTM:invalidcontext0x0.Ifyouwanttoseethebacktrace,pleasesetCG_CONTEXT_SHOW_BACKTRACEenvironmentalvariable.X-Code7的bug,有强迫症的童鞋不要纠结了.这是apple的官方bugreporter: https://forums.de