Question

我使用以编程方式制作的按钮构建水平滚动视图（请参阅下面的代码）。现在我想在我通常使用自动布局的按钮之间留出一些间距。

int x = 0;
for (int i = 0; i < 14; i++) {        
    UIButton *button = [[UIButton alloc]  initWithFrame:CGRectMake(x, 0, 10, self.soundBar.frame.size.height)];
    [button setTitle:[NSString stringWithFormat:@"Button %d", i] forState:UIControlStateNormal];
    [button setBackgroundColor:[UIColor redColor]];
    [button sizeToFit];
    [[self soundBar] addSubview:button];

    x += button.frame.size.width;
}

[[self soundBar] setContentSize:CGSizeMake(x, self.soundBar.frame.size.height)];

如何在这些按钮之间留下间距。我使用正确的方法来做到这一点吗？

Answer 1

您可以根据数据获取字符串大小，并为该字符串添加填充以获得间距。

int x=0;
for (int i=0; i<14; i++)
    {
        UIButton *btn=[[UIButton alloc]init];
        btn.titleLabel.font = [UIFont fontWithName:@"yourfontname" size:15];
        [btn setTitle:[NSString stringWithFormat:@"Button %d", i] forState:UIControlStateNormal];
        CGSize stringsize = [btn.title sizeWithFont:[UIFont fontWithName:@"yourfontname" size:15]];
        btn.tag = i;
        [btn setFrame:CGRectMake(x,0,stringsize.width+30, 45)];
        x = x + stringsize.width + 30;
        [self.scrollView addSubview:btn];
}

替换sizeWithFont：

CGSize size = [string sizeWithAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:15.0f]}];

iOS水平滚动视图与使用自动布局的按钮

1 个答案: