http://stackoverflow.com/questions/12943107/how-do-i-adjust-the-anchor-point-of-a-calayer-when-auto-layout-is-being-used
設置要旋轉或放縮的view的translatesAutoresizingMaskIntoConstraints =YES
即可解決在使用了autolayout時進行仿射變換無效的情況
設置要旋轉或放縮的view的translatesAutoresizingMaskIntoConstraints =YES
即可解決在使用了autolayout時進行仿射變換無效的情況