Question

我需要添加3个相关的微调器，其中第一个中的选定内容会影响第二个中显示的内容，然后第二个选择的内容会影响第三个中的内容。有没有人已经遇到过这个问题，你是怎么过来的？

我在考虑在资源中维护一些数组，这些数组已编号，然后根据前一个微调器中选择的选项加载到适配器中。这是一个好方法吗？

谢谢，米

Answer 1

我会用这样的东西做到这一点：

spinner1.setOnItemSelectedListener(new OnItemSelectedListener() 
{
    @Override
    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) 
    {
        SpinnerAdapter adapter = ...create or load the second adapter based on selected item...
        spinner2.setAdapter (adapter);
        spinner3.setAdapter (..create empty adapter...);
    }

    @Override
    public void onNothingSelected(AdapterView<?> parentView) 
    {
        spinner2.setAdapter (..create empty adapter...);
        spinner3.setAdapter (..create empty adapter...);
    }
});

spinner2.setOnItemSelectedListener(new OnItemSelectedListener() 
{
    @Override
    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) 
    {
        SpinnerAdapter adapter = ...create or load the third adapter based on selected item...
        spinner3.setAdapter (adapter);
    }

    @Override
    public void onNothingSelected(AdapterView<?> parentView) 
    {
        spinner3.setAdapter (..create empty adapter...);
    }
});

关于微调器的提示

1 个答案: