Question

我有一个按钮和一个文本字段。按钮位于textField下方。现在，当我单击按钮时，新文本字段应显示在第一个文本字段下方，并且还应更改按钮的框架。当我尝试这个时它第一次工作，但是当我第二次点击时，新的文本字段没有显示，按钮框也没有改变。帮助我解决这个问题。

我写的代码是：

<div class="product" >
  <div class="product-item">
    <div class="product-item-container">
        <div class="product-item-show-scroll">
            <div class="product-item__content">
                <h3>Title</h3>
                <div class="product-item__img">
                    <img src="#">
                </div>
            </div>
        </div>

        <div class="product-item-under-scroll">
            <div class="btn__group">
                <button class="quick-cart">Quick Cart</button>
            </div>
        </div>
    </div>

    <div class="product-item__bottom">
        <p class="price">Price</p>
    </div>
  </div>

  <div class="md-modal">
    Modal content for product
  </div>

</div>

Answer 1

声明x并在@implementation ViewController块中像

    @implementation Viewcontroller
 {
 int x,y;
 }

并将其他代码写为

 -(void)onboardCertificatesAddBtnBtnTap
 {


if (y =585, x=632) {

    _boardCertificationField= [[UITextField alloc]initWithFrame:CGRectMake(5, y+50, self.scrollView.frame.size.width/2-25, 40)];
    _boardCertificationField.font = [UIFont systemFontOfSize:17];
    _boardCertificationField.borderStyle=UITextBorderStyleRoundedRect;
    [_scrollView addSubview:_boardCertificationField];

    _expDateField = [[UITextField alloc]initWithFrame:CGRectMake(220, y+50, self.scrollView.frame.size.width/2-40, 40)];
    _expDateField .font = [UIFont systemFontOfSize:17];
    _expDateField .borderStyle=UITextBorderStyleRoundedRect;
    [_scrollView addSubview:_expDateField];

    _boardCertificatesAddBtn.frame = CGRectMake(5, x+50, 20, 20);

    [_boardCertificatesAddBtn setImage:[UIImage imageNamed:@"Add1.png"] forState:UIControlStateNormal];
    [_scrollView addSubview:_boardCertificatesAddBtn];

    [_boardCertificatesAddBtn addTarget:self action:@selector(onboardCertificatesAddBtnBtnTap) forControlEvents:UIControlEventTouchUpInside];

    y=y+50;
    x=x+50;
}        
      else  {

    _boardCertificationField= [[UITextField alloc]initWithFrame:CGRectMake(5, y+50, self.scrollView.frame.size.width/2-25, 40)];
    _boardCertificationField.font = [UIFont systemFontOfSize:17];
    _boardCertificationField.borderStyle=UITextBorderStyleRoundedRect;
    [_scrollView addSubview:_boardCertificationField];

    _expDateField = [[UITextField alloc]initWithFrame:CGRectMake(220, y+50, self.scrollView.frame.size.width/2-40, 40)];
    _expDateField .font = [UIFont systemFontOfSize:17];
    _expDateField .borderStyle=UITextBorderStyleRoundedRect;
    [_scrollView addSubview:_expDateField];

    _boardCertificatesAddBtn.frame = CGRectMake(5, x+50, 20, 20);

    [_boardCertificatesAddBtn setImage:[UIImage imageNamed:@"Add1.png"] forState:UIControlStateNormal];
    [_scrollView addSubview:_boardCertificatesAddBtn];

    [_boardCertificatesAddBtn addTarget:self action:@selector(onboardCertificatesAddBtnBtnTap) forControlEvents:UIControlEventTouchUpInside];


    y=y+50;
    x=x+50;
}

单击按钮时，必须显示文本字段？

1 个答案: