Question

我有一个ListView，CustomAdapter最多有50行（屏幕上一次只有11行）。每行包含spinner和两个EditText。我为这三列中的每一列传递了3组数据到适配器。当选择spinner项或更改文本时，我想修改适配器内的相关数据集，以便通过调用activity检索它。

我可以针对每个OnItemSelectedListener()注册spinner，但是，我无法找到方法来了解spinner所在的行。因此，我无法更新数据集。

这是适配器。

SQLiteDatabase      db;
Activity            mActivity;
int             []  mCategories;
String          []  mComments;
String          []  allCategories;
int             []  mAmounts;
String          []  spinnerValues;


TransCatListAdapter(Activity activity, int[] categories, String[] comments, int[] amounts){
    super (activity, R.layout.transcat_row, comments);

    mActivity   = activity;
    mCategories = categories;
    mComments   = comments;
    mAmounts    = amounts;

    db = DatabaseHelper.getInstance(activity);

}
public View getView(int pos, View convertView, ViewGroup parent) {
    View row = convertView;
    if (row==null) {
        LayoutInflater inflater=mActivity.getLayoutInflater();
        row = inflater.inflate(R.layout.transcat_row, null);
    }
    Spinner     SPNCategory = (Spinner) row.findViewById(R.id.trncatrow_category);
    EditText    ETComment   = (EditText) row.findViewById(R.id.trncatrow_comment);
    EditText    ETAmount    = (EditText) row.findViewById(R.id.trncatrow_amount);

    SPNCategory.setAdapter(new CategorySpinnerAdapter(mActivity, R.layout.categoryspinnerstyle, DatabaseMethods.getCategories(db)));

    ETComment.setText(mComments[pos]);
    ETAmount.setText(Utils.formatAsMoneyString(mAmounts[pos]));
    return (row);
}

Answer 1

因此，如果我理解正确，您希望能够向您的微调器注册OnItemSelectedListener，但您希望能够识别哪个旋转器是正确的？试试这个

getView(int pos, View convertView, ViewGroup parent) {
...
    spinner     SPNCategory = (Spinner) row.findViewById(R.id.trncatrow_category);
    spinner.setOnItemSelectedListener(new YourSpinnerListener(pos);
...

private class YourSpinnerListener implements OnItemSelectedListener {

    private int mSpinnerPosition;

    public YourSpinnerListener(int spinnerPosition) {
        mSpinnerPosition = spinnerPosition;
    }

    @Override
    public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub

    }
}

这个实现OnItemSelectedListener的类现在引用了微调器的位置。

玩得开心！

在listView中获取Spinner更改

1 个答案: