xcode - For 循环中的 UITextView 缺少参数

Question

Xcode 在调用 textShown1 = CustomTextView 行时抛出参数 textContainer 缺少参数。我很好奇为什么它只在 for 循环内部抛出错误，而在循环外部则不会。

for i in 1...paragraphCount {
    // Missing 'argument textContainer in call below', various other errors like 'consuective statements on a line must be separated by ;'
    textShown1 = CustomTextView(frame: CGRect(x: 0, y: 125 + (50*i)), width: CGRectGetWidth(self.frame), height: CGRectGetHeight(self.frame)-400))

    paragraphs.append(textShown1)
    self.view?.addSubview(textShown1)

}

    textShown1 = CustomTextView(frame: CGRect(x: 0, y: 50, width: CGRectGetWidth(self.frame), height: CGRectGetHeight(self.frame)-400))

我认为它也可能因不是 CGFloat 而导致问题，但在尝试转换它后它仍然会引发错误。我将 CustomTextView 更改为 UITextView 只是为了让代码不那么困惑:

for i in 1...8 {

    var converted: CGFloat = CGFloat(i)
    // Missing 'argument textContainer in call below', various other errors like 'consuective statements on a line must be separated by ;'
    textShown1 = UITextView(frame: CGRect(x: 0, y: (50 * converted)), width: CGRectGetWidth(self.frame), height: CGRectGetHeight(self.frame)-400)

    paragraphs.append(textShown1)
    self.view?.addSubview(textShown1)

}

Answer 1

CGRect(x: 0, y: 125 + (50*i)), width: CGRectGetWidth(self.frame), height: CGRectGetHeight(self.frame)-400)

应该是

CGRectMake(0, CGFloat(125 + (50*i)), CGRectGetWidth(self.view.frame), CGFloat(CGRectGetHeight(self.view.frame)-400))