微調框setOnItemSelectedListener不啓動

Question

我對每個產品都有微調框。微調有產品選擇（如重量10磅，20磅等） 也有二級選項，如顏色。

爲此，我想讓客戶在將顏色綁定到同一個微調器後選擇第一個重量。但我不能讓快速啓動setOnItemSelectedListener。

謝謝你的時間！

ddlOptions = (Spinner) lnr.findViewById(R.id.ddlOptions); 
ddlOptions.setId(products.get(i).ID); 
SpinnerBind(ddlOptions, products.get(i).ID, -1); 


ddlOptions.setOnItemSelectedListener(new OnItemSelectedListener() { 
    int first = 0; 
    int ProductId = ddlOptions.getId(); 

    @Override 
    public void onItemSelected(AdapterView <? > parentView, View selectedItemView, int position, long id) { 
     if (first != 0) { 
      SpinnerBind(ddlOptions, ProductId, mItems.get(position).getId()); 
     } else first = 1; 
    } 

    @Override 
    public void onNothingSelected(AdapterView <? > parentView) { 
     // your code here 
    } 

}); 




public static class Element { 
    private String mText; 
    private int mId; 

    public Element(String text, int id) { 
     mText = text; 
     mId = id; 
    } 

    public int getId() { 
     return mId; 
    } 

    public void setId(int id) { 
     mId = id; 
    } 

    public String getmText() { 
     return mText; 
    } 

    public void setmText(String mText) { 
     this.mText = mText; 
    } 

    @Override 
    public String toString() { 
     return mText; 
    } 
} 

private List <Element> mItems; 



public void SpinnerBind(Spinner ddlOptions, int ProductId, int ParentId) { 
    mItems = new ArrayList <MainScreen.Element>(); 
    ArrayList <String> optionNames = new ArrayList <String>(); 
    ArrayList <ProductOption> productOptions = this.dhn.GetProductOptions(ProductId, ParentId); 

    for (int i = 0; i < productOptions.size(); i++) { 
     mItems.add(new Element(productOptions.get(i).OptionName, productOptions.get(i).ID)); 
    } 

    ArrayAdapter <MainScreen.Element> adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, android.R.id.text1, mItems); 

    ddlOptions.setAdapter(adapter); 
} 

Answer 1

這是愚蠢的問題。只需要第二個項目在微調。當選中相同的項目時，微調器不會觸發。