iOS 设置UILabel 的内边距
- (void)drawTextInRect:(CGRect)rect { UIEdgeInsets insets = {0, 5, 0, 5}; [super drawTextInRect:UIEdgeInsetsInsetRect(rect, insets)]; }
参考:http://*.com/questions/3476646/uilabel-text-margin
http://unmi.cc/uilable-uitextfield-padding-insets/