Pay attention to the details of setting the view center and size in iOS

Pay attention to the details of setting the view center and size in iOS

_ ShowImageView. center = self. center;

_ ShowImageView. size = _ showImage. size;

NSLog (@ "First: _ showImageView. frame ==%@", NSStringFromCGRect (_ showImageView. frame ));

_ ShowImageView. center = self. center;

_ ShowImageView. bounds = (CGRect) {CGPointZero, _ showImage. size };

NSLog (@ "second type: _ showImageView. frame ==%@", NSStringFromCGRect (_ showImageView. frame ));

10:41:59. 311 NeiHanShe [6205: 60b]First: _ ShowImageView. frame ==={ {160,284}, {265,146.13971 }}

10:41:59. 311 NeiHanShe [6205: 60b]Second: _ ShowImageView. frame =={{ 27.5, 210.93015 },{ 265,146.13971 }}

For all correct settings, select the second type. Otherwise, the self. center in the first type will be treated as x y of _ showImageView. frame.