自定義陣列適配器內的刷新列表

Question

我已經看過大部分討論這個問題的問題，但似乎找不到解決我的問題的任何問題。我有一個自定義數組適配器將數據傳遞給一個列表，我需要列表刷新一次，我已經刪除了一個項目，我明白，notifyDataSetChanged（）應該是我的解決方案，但還沒有使它工作 對不起，我亂的代碼 但我仍然在學習:) 任何幫助，將不勝感激，感謝名單:)

我的適配器：

public class CustomBasketAdapter extends ArrayAdapter<String> 
{ 

private String TAG ="Vik"; 
public String stringEmail= ""; 
public String stringStore= ""; 
private String product = ""; 
private String quantity = ""; 
private String store = ""; 

//String[] stringEmail={"stefan.grobler@gmail.com"}; 

private final Activity context; 
private final String[] storename; 
private final String[] itemprice; 
private final String[] itemname; 
private final String[] productquantity; 
private final String[] basketlinetotal; 



//public CustomListAdapter(Activity context, String[] itemname,String[]  itemprice, Integer[] imgid) { 
public CustomBasketAdapter(Activity context, String[] storename,String[] itemprice, String[] productquantity, String[] itemname, String[] basketlinetotal) { 
super(context, R.layout.viewbasket_layout, storename); 




// TODO Auto-generated constructor stub 
this.context=context; 
this.storename=storename; 
this.itemprice=itemprice; 
this.itemname=itemname; 
this.productquantity=productquantity; 
this.basketlinetotal=basketlinetotal; 

Intent intent = ((Activity) context).getIntent(); 
    if (null != intent) 
{ 
    stringEmail = intent.getStringExtra("EmailAddress"); 
    stringStore = intent.getStringExtra("StoreDescription"); 
} 

Toast toast = Toast.makeText(getContext(),stringEmail, Toast.LENGTH_LONG); 
       toast.setGravity(Gravity.CENTER, 0, 10); 
       //toast.show(); 

} 

public View getView(int position,View view,ViewGroup parent) { 
LayoutInflater inflater=context.getLayoutInflater(); 
View rowView=inflater.inflate(R.layout.viewbasket_layout, null,true); 

final TextView txtstore = (TextView) rowView.findViewById(R.id.txtstorename); 
final TextView txtproduct = (TextView) rowView.findViewById(R.id.txtproduct); 
final TextView txtquantity = (TextView) rowView.findViewById(R.id.txtquantity); 
TextView txtprice = (TextView) rowView.findViewById(R.id.txtprice); 
TextView txttotal = (TextView) rowView.findViewById(R.id.txttotal); 
Button btnclear = (Button) rowView.findViewById(R.id.btnclearitem); 

txtstore.setText(storename[position]); 
txtproduct.setText(itemname[position]); 
txtquantity.setText(productquantity[position]); 
txtprice.setText(itemprice[position]); 
txttotal.setText(basketlinetotal[position]); 


btnclear.setOnClickListener(new OnClickListener(){ 

    @Override 
    public void onClick(View arg0) { 

     product = txtproduct.getText().toString(); 
     quantity = txtquantity.getText().toString(); 
     store = txtstore.getText().toString(); 

     DeleteFromBasket(); 

     Toast toast = Toast.makeText(getContext(),"Item Cleared", Toast.LENGTH_LONG); 
      toast.setGravity(Gravity.CENTER, 0, 10); 
      toast.show(); 

      notifyDataSetChanged(); 



    } 
    /*your onclick code*/ 
}); 



return rowView; 




}; 



public void ChannelToService() 
{ 

String SOAP_ACTION = "http://tempuri.org/ITHubServ/DeleteFromBasket"; 
String METHOD_NAME = "DeleteFromBasket"; 
String NAMESPACE = "http://tempuri.org/"; 
String URL = "http://www.buh34nart.co.za/THubServ.svc?wsdl"; 
String OrderLine = ""; 

try{ 

    SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME); 

    String basketline = stringEmail + "|" + store + "|" + product.replace("|", "") + "|" + quantity; 

    //OrderLine = OrderLine.substring(0,OrderLine.length() -1); 
    Request.addProperty("Line", basketline); 
    //Request.addProperty("UserPassword", txtPass.getText().toString()); 

    SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
    soapEnvelope.dotNet = true; 
    soapEnvelope.setOutputSoapObject(Request); 

    HttpTransportSE transport= new HttpTransportSE(URL); 

    Object Response = null; 

     transport.call(SOAP_ACTION, soapEnvelope); 

     Response = soapEnvelope.getResponse(); 

    // data = Response.toString().split("[\\x7C]"); 

     //Log.i(TAG, "Result Order: " + Response); 
     //if(Response.toString().equals("1")) 
     //{ 
     // runOnUiThread(new Runnable() { 
     //    public void run() { 

       //Toast toast = Toast.makeText(LoginPage.this,"Incorrect Username/Password" + 
       //"    Login Failed", Toast.LENGTH_LONG); 
       //toast.setGravity(Gravity.CENTER, 0, 10); 
       //toast.show(); 
       //Not Registered or psw wrong or email wrong (forgot password) 
     //   } 
     // }); 
     //} 
     //else 
     //{ 
     // if(Response.toString().equals("9")) 
     // { 
     //  startActivity(new Intent("com.ctc.android.widget.TechnicalError")); 
     //  // Probleem met system Technical 
     // } 
     // else 
     // { 
       //btnloginclick(); 
     // } 

    // }   
} 

catch(Exception Ex) {} 
} 



    public void DeleteFromBasket() 
{ 
    AsyncCallWS task = new AsyncCallWS(); 
    task.execute(); 

} 



private class AsyncCallWS extends AsyncTask<Void, Void, Void> { 


ProgressDialog progDailog = new ProgressDialog(getContext()); 

@Override 
protected Void doInBackground(Void... params) { 
    Log.i(TAG, "doInBackground"); 
    ChannelToService(); 
    return null; 
} 

@Override 
protected void onPostExecute(Void result) { 
    Log.i(TAG, "onPostExecute"); 
    CustomBasketAdapter.this.clear(); 
    CustomBasketAdapter.this.addAll(); 
    CustomBasketAdapter.this.notifyDataSetChanged(); 

    progDailog.dismiss(); 





} 


@Override 
protected void onPreExecute() { 
    Log.i(TAG, "onPreExecute"); 
    super.onPreExecute(); 
    progDailog.setMessage("Loading..."); 
    progDailog.setIndeterminate(false); 
    progDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER); 
    progDailog.setCancelable(true); 
    progDailog.show(); 
} 

@Override 
protected void onProgressUpdate(Void... values) { 
    Log.i(TAG, "onProgressUpdate"); 
    } 

} 


} 

Answer 1

沒關係我找到了解決辦法 我做了什麼叫做從自定義適配器

  if(context instanceof ViewBasket){ 
      ((ViewBasket)context).GetBasketProducts(); 
     } 

內建立名單 方法因爲刪除該項目只改變了數據庫上的數據，這些數據通過我需要的信息再次請求信息

Answer 2

我想，你是不是刪除項目字符串數組中，你的問題。你應該改變

CustomBasketAdapter.this.clear(); 
CustomBasketAdapter.this.addAll(); 
CustomBasketAdapter.this.notifyDataSetChanged(); 

通過

CustomBasketAdapter.this.remove(item); 
CustomBasketAdapter.this.notifyDataSetChanged();