Question

我在角度应用程序中使用Primeng Tabview。我有如下所示的代码，使用代码设置活动选项卡。

public struct CarHandle
{
    internal int m_id;

    internal CarHandle(int id)
    {
        m_id = id;
    }
    public int ID { get { return m_id; } }
}


public class CarManager
{
    private struct CarData
    {
        public int Speed;
        public int Size;
    }

    private List<CarData> m_cars = new List<CarData>();
    private List<int> m_removedCars = new List<int>();

    public CarHandle CreateCar(int speed, int size)
    {
        var carData = new CarData() { Speed = speed, Size = size };
        // see if there is an empty slot we can use
        if (m_removedCars.Count > 0)
        {
            int ix = m_removedCars[m_removedCars.Count - 1];
            m_removedCars.RemoveAt(m_removedCars.Count - 1);
            m_cars[ix] = carData;
            return new CarHandle(ix);
        }
        else
        {
            m_cars.Add(carData);
            return new CarHandle(m_cars.Count-1);
        }
    }

    public void RemoveCar(ref CarHandle handle)
    {
        if (m_cars.Count > handle.ID && m_cars[handle.ID].Size != -1)
        {

            // remove from list if it is the last car in list
            if (handle.ID == m_cars.Count - 1)
            {
                m_cars.RemoveAt(m_cars.Count - 1);
            }
            else
            {
                // if we remove this item from the list, it would invalidate 
                // all handles after this index, so we just remember that we 
                // can reuse this slot
                m_removedCars.Add(handle.ID);
                m_cars[handle.ID] = new CarData() { Size = -1, Speed = -1 };
            }
        }
        // invalidate the handle so it cannot be used again
        handle.m_id = -1;
    }

    public int GetSize(CarHandle handle)
    {
        // TODO: add error checking!
        return m_cars[handle.ID].Size;
    }
}


class Program
{
    static void Main(string[] args)
    {
        CarManager manager = new CarManager();
        var car1 = manager.CreateCar(10, 20);
        var s1 = manager.GetSize(car1);
        System.Diagnostics.Debug.Assert(s1 == 20);
        var car2 = manager.CreateCar(30, 40);
        var s2 = manager.GetSize(car2);
        System.Diagnostics.Debug.Assert(s2 == 40);

        manager.RemoveCar(ref car1);
        System.Diagnostics.Debug.Assert(car1.ID == -1);
        s2 = manager.GetSize(car2);

        var car3 = manager.CreateCar(50, 60);
        var s3 = manager.GetSize(car3);
        System.Diagnostics.Debug.Assert(s3 == 60);
    }
}

但是一旦我手动转到选项卡并尝试单击按钮，它就不会转到右侧选项卡。不确定有什么问题或者如何使其有效？

Answer 1

手动更改标签时更新index变量。

<强> HTML

<p-tabView [activeIndex]="index" (onChange)="handleChange($event)">...

<强> TS

handleChange(e) {
  this.index = e.index;
}

请参阅Plunker

Answer 2

或者，使用双向绑定：

<p-tabView [(activeIndex)]="index"></p-tabView>

primeng tabview angular issue设置代码中的活动选项卡

2 个答案: