iOS设置UIButton文字对齐方式和边距

• 按钮垂直对齐方式

@property(nonatomic) UIControlContentVerticalAlignment contentVerticalAlignment;
typedef NS_ENUM(NSInteger, UIControlContentVerticalAlignment) {
UIControlContentVerticalAlignmentCenter
= 0,
UIControlContentVerticalAlignmentTop
= 1,
UIControlContentVerticalAlignmentBottom
= 2,
UIControlContentVerticalAlignmentFill
= 3,
};

• 按钮水平对齐方式

@property(nonatomic) UIControlContentHorizontalAlignment contentHorizontalAlignment;
typedef NS_ENUM(NSInteger, UIControlContentHorizontalAlignment) {
UIControlContentHorizontalAlignmentCenter = 0,
UIControlContentHorizontalAlignmentLeft
= 1,
UIControlContentHorizontalAlignmentRight
= 2,
UIControlContentHorizontalAlignmentFill
= 3,
UIControlContentHorizontalAlignmentLeading
API_AVAILABLE(ios(11.0), tvos(11.0)) = 4,
UIControlContentHorizontalAlignmentTrailing API_AVAILABLE(ios(11.0), tvos(11.0)) = 5,
};

 设置按钮文字左对齐

btn.contentHorizontalAlignment = UIControlContentHorizonAlignmentLeft;

设置按钮文字与边框距离

btn.contentEdgeInsets = UIEdgeInsetsMake(0,10, 0, 0);

最后

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