如何 return 来自 Spinner 适配器的 arrayList

Question

我的客户微调器有以下微调器适配器。除了每个项目的不同文本外，我还有不同的字体和背景颜色。我通过传递一个 arrayList<ArrayList<String>> 来指示这一点，它指示每个项目的颜色和文本值 - 内部数组列表代表一个项目。

现在我想通过获取其 id 并拉出正确的 arrayList 来将所选项目数组列表返回到调用 class，但我不确定如何构造此方法的参数。像 spinner.getItemDetails_Arraylist(...);

public class SpinnerAdapter extends ArrayAdapter<ArrayList<String>>{ 
    ArrayList<ArrayList<String>> list = new ArrayList<ArrayList<String>>();

    private Context c;
    public SpinnerAdapter (Context context, int textViewResourceId, ArrayList<ArrayList<String>> objectList) {
        super(context, textViewResourceId, objectList);
        // TODO Auto-generated constructor stub
        this.c = context;
        this.list =objectList;
    }

    @Override
    public View getDropDownView(int position, View convertView,ViewGroup parent) {
        // TODO Auto-generated method stub
        return getCustomView(position, convertView, parent);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        return getCustomView(position, convertView, parent);
    }

    public View getCustomView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        //return super.getView(position, convertView, parent);

        LayoutInflater inflater=(LayoutInflater) c.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        View row=inflater.inflate(R.layout.spinner_custom, parent, false);
        TextView textView_item=(TextView)row.findViewById(R.id.textView_teamName);

        //Pull team details from the object at position
        ArrayList<String> itemDetails = list.get(position);  
        String itemName = itemDetails.get(0);
        String itemAbbreviation = itemDetails.get(1);
        String iteme_primaryColor = itemDetails.get(2);
        String item_secondaryColor = itemDetails.get(3);

        //Update the spinner item controls
        textView_team.setText(teamName);
        textView_item.setBackgroundColor(Color.parseColor(item_primaryColor));
        textView_item.setTextColor(Color.parseColor(item_secondaryColor));

        return row;
    }
}

Answer 1

您可以在您的微调器上尝试此 setOnItemSelectedListener 并获取所选位置的视图，然后您可以提取您的列表

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> arg0, View view,
            int position, long arg3) {
        TextView tv=(TextView) view.findViewById(R.id.textView_teamName);

        int color_id = tv.getCurrentTextColor(); // get textColor 

        ColorDrawable cd = (ColorDrawable) tv.getBackground();
        int backcolor_id = cd.getColor(); // get background color

        String text = tv.getText().toString(); // get the text
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
    }
});

另一种解法：
如果您仍然有原始的 ArrayList，您可以使用相同的 setOnItemSelectedListener 来获取所选项目的位置，然后您可以从原始列表

中获取它的小列表

ArrayList<String> selected_item = new ArrayList<String>();

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> arg0, View view,
            int position, long arg3) {
        selected_item = originalList.get(position);
        // where original list is your main ArrayList<ArrayList>
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
    }
});

如何 return 来自 Spinner 适配器的 arrayList

how to return a arrayList from a spinner adapter

android

custom-controls

android-spinner