ios - 我的应用程序因 heightConstraints 而崩溃我不知道如何修复

Question

当我注释掉约束时它工作得很好，但问题是 textfield 的高度变得太小，当我添加 heightConstraint 时，它工作正常我的 iPhone XS Max，但在其他 Iphone 上崩溃了...

lazy var textField: MaterialTexField = { //MaterialTexField

    let tf = MaterialTexField()
    tf.translatesAutoresizingMaskIntoConstraints = false
    self.contentView.addSubview(tf)

    NSLayoutConstraint.activate([
        tf.leadingAnchor.constraint(equalTo: self.contentView.leadingAnchor, constant:16.0),
        tf.trailingAnchor.constraint(equalTo: self.contentView.trailingAnchor, constant:-16.0),
        tf.topAnchor.constraint(equalTo: self.contentView.topAnchor, constant:8.0),
        tf.bottomAnchor.constraint(equalTo: self.bottomAnchor, constant: 1),
//This is the problematic constraints
        tf.heightAnchor.constraint(lessThanOrEqualTo:self.contentView.heightAnchor, multiplier:0.9)

    return tf

}()

Answer 1

你要不要试试这个

tf.bottomAnchor.constraint(equalTo: self.contentView.bottomAnchor, constant: 1.0),

代替

tf.bottomAnchor.constraint(equalTo: self.bottomAnchor, constant: 1),