Question

我的应用中有一个ListView，ListView中的每个项目都包含一个按钮和项目计数。点击每个项目中的按钮，我想显示一个对话框EditText输入相应项目的新计数，并使用我从对话EditText字段获得的值更新项目。

我创建了对话框以在按钮点击时输入新计数，但无法更新该值。
我的适配器

public class MyAdapter extends BaseAdapter {

    @Override
    public int getCount() {
        return planList.size();
    }

    @Override
    public Object getItem(int position) {
        return planList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        final SalesModel db_data = planList.get(position);

        if (convertView == null) {
            convertView = View.inflate(getApplicationContext(), R.layout.return_confirm, null);
        }

        TextView name = (TextView) convertView.findViewById(R.id.name);
        final TextView stock = (TextView) convertView.findViewById(R.id.stock);
        TextView amount = (TextView) convertView.findViewById(R.id.amount);
        ImageView minus = (ImageView) convertView.findViewById(R.id.minus);

        Double count = Double.parseDouble(db_data.getStock());
        Double price = Double.parseDouble(db_data.getSprice());
        Double s_price = count*price;
        String set_amount = s_price.toString();

        name.setText(db_data.getName());
        stock.setText(db_data.getStock());
        amount.setText(set_amount);

        minus.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                stock_return = ShowDialogue();

                Double n_stock = Double.parseDouble(db_data.getStock())-Double.parseDouble(stock_return);

                stock.setText(n_stock.toString());
            }
        });

        return convertView;
    }
}

显示对话的功能

public String ShowDialogue(){

    String stk_val;
    stock_return = "0.0";
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    final AlertDialog dialog = builder.create();
    dialog.setCancelable(false);
    LayoutInflater inflater = (LayoutInflater) this.getSystemService(this.LAYOUT_INFLATER_SERVICE);
    View dialogLayout = inflater.inflate(R.layout.popup_reminder, null);
    final EditText stk = (EditText)dialogLayout.findViewById(R.id.stock);
    Button ok = (Button)dialogLayout.findViewById(R.id.later );
    Button close = (Button)dialogLayout.findViewById(R.id.close);
    close.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View arg0) {

            dialog.dismiss();
        }
    });

    ok.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View arg0) {

            if(stk.getText().toString().trim().isEmpty()){
                stk.setError("Enter quantity");
            }
            else {
                stock_return = stk.getText().toString().trim();
            }
        }
    });

    dialog.setView(dialogLayout,0,0,0,0);
    dialog.show();

    return stock_return;

}

Answer 1

你做错了什么。在输入确定按钮之前，对话框无法返回。

试试这样：

let query = "Select [System.Id], [System.Title], [System.State] 
            From WorkItems Where [System.WorkItemType] = 'Bug' 
            order by [Microsoft.VSTS.Common.Priority] asc, [System.CreatedDate] desc";

client.getQuery("DMPLM_TP1", query).then ((wi) => {}, (query) => {});

像这样改变对话框..

 componentWillMount() {
    console.log(`componentDidUpdate`, prevProps);
    const user = firebase.auth().currentUser;

    if (user != null) {
      const db = firebase.firestore();
      const docRef = db.collection('userCheckInHistory').doc(user.uid);
      docRef
        .get()
        .then(doc => {
          if (doc.exists) {
            let shopId = this.props.shopId;
            let userShopHistoryData = doc.data();
            let userShopPick = userShopHistoryData[shopId];
              this.setState({
                checkInHistory: userShopPick,
                shopId: this.props.shopId
              });


          } else {
            console.log('No such document!');
            return false;
          }
        })
        .catch(function(error) {
          console.log('Error getting document:', error);
        });
    }
  }

单击列表视图项

1 个答案: