我如何设置一个UIButton的标题为左对齐?

我需要在UIButton的左侧显示一个电子邮件地址，但它被定位到中心。

有什么方法来设置对齐到UIButton的左边?

这是我当前的代码:

UIButton* emailBtn = [[UIButton alloc] initWithFrame:CGRectMake(5,30,250,height+15)];
emailBtn.backgroundColor = [UIColor clearColor];
[emailBtn setTitle:obj2.customerEmail forState:UIControlStateNormal];
emailBtn.titleLabel.font = [UIFont systemFontOfSize:12.5];
[emailBtn setTitleColor:[[[UIColor alloc]initWithRed:0.121 green:0.472 blue:0.823 alpha:1]autorelease] forState:UIControlStateNormal];
[emailBtn addTarget:self action:@selector(emailAction:) forControlEvents:UIControlEventTouchUpInside];
[elementView addSubview:emailBtn];
[emailBtn release];

当前回答

UIButton *btn;
btn.contentVerticalAlignment = UIControlContentVerticalAlignmentTop;
btn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

2014-08-30 04:58:05

其他回答

UIButton *btn;
btn.contentVerticalAlignment = UIControlContentVerticalAlignmentTop;
btn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

2014-08-30 04:58:05

迅捷用户界面

你应该改变应用于文本的.frame修饰符的对齐属性。另外，将多行文本对齐设置为.leading。

Button {
    // handler for tapping on the button
} label: {
    Text("Label")
        .frame(width: 200, alignment: .leading)
        .multilineTextAlignment(.leading)
}

2021-07-13 08:00:16

如果您不想在代码中进行调整，也可以使用接口生成器。这里我左对齐文本，也缩进一些:

别忘了你也可以在按钮中对齐图像。

2014-03-29 00:13:15

斯威夫特 4+

button.contentHorizontalAlignment = .left
button.contentVerticalAlignment = .top
button.contentEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)

2017-09-22 11:37:28

如果你使用按钮。contenttedgeinsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)，你会得到一个警告，声明“contenttedgeinsets”在iOS 15.0中已弃用:使用UIButtonConfiguration时忽略此属性。另一种解决方案是:

15、0 +。

    var button: UIButton = {
        let button = UIButton(configuration: .filled())

        button.configuration?.contentInsets = NSDirectionalEdgeInsets(top: 16, leading: 20, bottom: 16, trailing: 20)
        button.contentHorizontalAlignment = .leading
        
        return button
    }()

2022-10-11 14:19:55

我如何设置一个UIButton的标题为左对齐?

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