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第一次使用片段。無法將字符串從Asynctask傳遞到片段
嘗試將字符串值從傳遞給片段。
public class FillCust extends AsyncTask<String, String, List<Map<String, String>>> {
String z = "" ;
@Override
protected void onPostExecute(List<Map<String, String>> r) {
super.onPostExecute(r);
custName = String.valueOf(CustData.get(0).get("A"));
contactPerson = String.valueOf(CustData.get(0).get("B"));
telNo = String.valueOf(CustData.get(0).get("C"));
assignedBranch = String.valueOf(CustData.get(0).get("D"));
}
@Override
protected List<Map<String, String>> doInBackground(String... params) {
try {
Connection con = connectionClass.CONN();
if (con == null) {
z = "Error in connection with SQL server";
} else {
String query = "select * from tblCustomer_Master where Customer_ID ='" + CustID + "'";
PreparedStatement ps = con.prepareStatement(query);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
Map<String, String> datanum = new HashMap<String, String>();
datanum.put("A", rs.getString("Company_Name"));
datanum.put("B", rs.getString("Contact_Person"));
datanum.put("C", rs.getString("Tel_No"));
datanum.put("D", rs.getString("Assigned_Branch"));
CustData.add(datanum);
}
z = "Success";
}
} catch (Exception ex) {
z = "Error retrieving data from table";
}
return CustData;
}
}
我的界面
public String getCompanyname(String result) {
return custName ;
}
你不會從'doInBackground'返回任何東西。 – Vucko
是的,我正在從doInbackground返回List「CustData」! hw我可以使用列表通過界面傳遞嗎? –
哦,對不起,我沒有注意到它。那麼,我個人喜歡使用[EventBus](https://github.com/greenrobot/EventBus)從'onPostExecute'發佈自定義事件,因爲它是異步的,您可以在獲取新數據時更新需要更新的UI 。 – Vucko