迅速
//将内容对齐到框架的左侧 button.contentHorizontalAlignment = .left //将内容对齐到框架的右侧 button.contentHorizontalAlignment = .right //将内容对齐框架的中心 button.contentHorizontalAlignment = .center //使内容填充框架 button.contentHorizontalAlignment = .fill
目标C
//将内容向左对齐 button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft; //将内容向右对齐 button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight; //将内容对齐中心 button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter; //对齐内容以填充框架 button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentFill;