横向均匀分布三个按钮ios

Posted 2023-03-13

【中文标题】横向均匀分布三个按钮ios

【英文标题】：Horizontally distribute three buttons evenly ios

【发布时间】：2017-06-03 13:33:07

【问题描述】：

我有三个UIButtons 和一个支架UIView 我希望我的所有三个UIButton 在UIView 内垂直居中，并且我希望它们水平分布均匀

float ycentre = CGRectGetMidY(self.buttonHolderView.bounds);
float xposition = (self.buttonHolderView.frame.size.width - 135.0f)/4.0f;


self.button1 = [[UIButton alloc]initWithFrame:CGRectMake(xposition,0, 45, 30)];
self.button1.center = CGPointMake(self.button1.frame.origin.x, ycentre);


self.button2 = [[UIButton alloc]initWithFrame:CGRectMake((xposition*2)+45,0, 45, 30)];
self.button2.center = CGPointMake(self.button2.frame.origin.x, ycentre);

self.button3 = [[UIButton alloc]initWithFrame:CGRectMake((xposition*3)+90,0, 45, 30)];
self.button3.center = CGPointMake(self.button3.frame.origin.x, ycentre);
[self.button3 addTarget:self action:@selector(ShareButtonClicked) forControlEvents:UIControlEventTouchUpInside];

[self.buttonHolderView addSubview:self.button1];
[self.buttonHolderView addSubview:self.button2];
[self.buttonHolderView addSubview:self.button3];

每个按钮都有高度 30 和宽度 45 ，但我的代码没有平均分配它们有什么问题？

【问题讨论】：

发布您正在寻找的用户界面...

【参考方案1】：

将它们放在UIStackView 中。它使间隔视图变得非常容易。

【讨论】：

最好的方法。冰雹UIStackView...！ :P

注意UIStackView需要ios 9.0+

【参考方案2】：

如下设置按钮的frame，不要设置center

float thirdOfWidth = (self.buttonHolderView.frame.width/3.0);
float buttonWidth = 45.0;
float buttonHeight = 30.0;

self.button1 = [[UIButton alloc]initWithFrame:CGRectMake(thirdOfWidth*0 + (thirdOfWidth - buttonWidth)/2, (self.buttonHolderView.frame.height - buttonHeight)/2, 45, 30)];

self.button2 = [[UIButton alloc]initWithFrame:CGRectMake(thirdOfWidth*1 + (thirdOfWidth - buttonWidth)/2, (self.buttonHolderView.frame.height - buttonHeight)/2, 45, 30)];

self.button3 = [[UIButton alloc]initWithFrame:CGRectMake(thirdOfWidth*2 + (thirdOfWidth - buttonWidth)/2, (self.buttonHolderView.frame.height - buttonHeight)/2, 45, 30)];

【参考方案3】：

也可以通过任意数量的按钮循环完成

        NSInteger count = 3;
        CGFloat buttonWidth = 45;
        CGFloat buttonHeight = 30;
        CGFloat x = (self.bounds.size.width - buttonWidth) / 2;
        CGFloat verticalSpacing = ((self.bounds.size.height - buttonHeight * count) / count) - buttonHeight / 2;
        CGFloat y = verticalSpacing;

        for (int i = 0; i < count; i++) 
            UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(x, y, buttonWidth, buttonHeight)];
            [self addSubview:button];
            y += buttonHeight + verticalSpacing;