ios - 访问在运行时创建的UILabel

Question

我已经在UILabel (lblCount)的action方法上创建了UIButton (btnAdd)和UIButton (Add Item Button)。新的UILabel和UIButton已添加到scrollview中。 UILabel (lblCount)显示被点击的UIButton (btnAdd)的数量。在这里，addBtnClickCount是一个整数，用于计算点击次数。

    UILabel * lblCount = [[UILabel alloc] initWithFrame:CGRectMake( 50, 100*addBtnClickCount, 25, 25)];
    lblCount.text = [NSString stringWithFormat:@"%d",count];
    lblCount.tag = addBtnClickCount;
    lblCount.textColor = [UIColor whiteColor];
    lblCount.textAlignment = NSTextAlignmentCenter;
    [self.scrollView addSubview:lblCount];

    addBtnClickCount = addBtnClickCount+1;

当用户点击添加项目按钮时，将有多个 label (lblCount)和 button (btnAdd)。我想访问特定 label和 add button的特定 display the count。

Answer 1

您已经在标签上设置了标签。创建一个可变数组labelArray并为其添加标签。要访问特定标签，请在“添加”按钮的操作上执行以下代码。

       -(void)addItem:(UIButton*)button{
          UILabel* lblShowCount = [_labelArray objectAtIndex:[button tag]];
          lblShowCount.text = [NSString stringWithFormat:@"%d", [lblShowCount.text integerValue]+1];

         }