Android SQLite SELECT语句未执行

Question

I'm building an SQLite database to manage orders, order items and customer datas on an Android device. I have implemented the DataHelper with SQLiteOpen helper as a private class inside DataAdapter.java and have been able to insert data into the database.

However when I run a simple select _id, order_id, retailer, qty from the_order the code throws and exception. When I look at the last SQL Statement it seems the select is not executed.

Here is the code for the DataAdapter.java, the getAllOrders method has the select statement.

package com.orderdelivery;

import java.util.ArrayList;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

public class DataAdapter {

private DataHelper dHelper;
private Context context;
private SQLiteDatabase db;
public static final String ORDER_TABLE_NAME ="the_order";
 public static final String ITEM_TABLE_NAME="item";
 public static final String CUSTOMER_TABLE_NAME="customer";
 public static final String CUSTOMER_KEY_ID="_id";
public static final String CUSTOMER_KEY_ORDER_ID = "order_id";
public static final String CUSTOMER_KEY_NAME = "name";
public static final String CUSTOMER_KEY_ADDRESS = "address";
public static final String CUSTOMER_KEY_COUNTRY = "country";
public static final String CUSTOMER_KEY_ZIPCODE = "zip_code";
public static final String CUSTOMER_KEY_CITY = "city";
public static final String CUSTOMER_KEY_HOMEPHONE = "home_phone";
public static final String CUSTOMER_KEY_CELLPHONE = "cell_phone"; 
public static final String ITEM_KEY_NAME="name";
public static final String ITEM_KEY_ID="item_id";
public static final String ITEM_KEY_ORDER_ID="order_id";
public static final String ITEM_KEY_DESCRIPTION="description";
public static final String ITEM_KEY_QTY="qty";
public static final String ITEM_KEY_BRAND="brand";
public static final String ITEM_KEY_CURRENTQTY="current_qty";
public static final String ITEM_KEY_ITEM_ID_INC="_id";
public static final String ITEM_KEY_PRICE="price";
public static final String ITEM_KEY_BARCODE="barcode";
public static final String ORDER_KEY_ORDER_ID = "order_id";
public static final String ORDER_KEY_ORDER_IDSQLITE="_id";
public static final String ORDER_KEY_STATUS="status";
public static final String ORDER_KEY_CONFIRMATIONCODE="confirmation_code";
public static final String ORDER_KEY_HOUR = "hour";
public static final String ORDER_KEY_MINUTE="minute";
public static final String ORDER_KEY_RETAILER="retailer_name";
public static final String ORDER_KEY_RETAILERADDRESS="retailer_address";
public static final String ORDER_KEY_QTY="qty";
private static final String DATABASE_NAME = "orderdata.db";
private static final int    DATABASE_VERSION =1;
private static final String ORDER_TABLE_CREATE = "create table the_order(order_id text not null, qty integer not null," 
                                                + " status text not null, confirmation_code text not null, hour integer not null," 
                                                + " minute integer not null, retailer_name text not null, retailer_address text not null, _id integer primary key autoincrement, unique(order_id));";
private static final String CUSTOMER_TABLE_CREATE= "create table customer(order_id text not null, name text not null, "
                                                  +"address text not null, country text not null,city text not null,zip_code text not null, "
                                                  +"home_phone text not null, cell_phone text not null, _id integer primary key autoincrement, foreign key(order_id) references the_order(order_id));";
private static final String ITEMS_TABLE_CREATE="create table item(order_id text not null, name text not null, "
                                              +"description text not null, qty integer not null, brand text not null, current_qty integer not null, price real not null, "
                                              +"item_id integer not null , barcode text, _id integer primary key autoincrement, foreign key(order_id) references the_order(order_id));";




public DataAdapter(Context context) {

    this.context = context;
}

public DataAdapter open() throws SQLException{

    //For testing
//      db.delete(this.ORDER_TABLE_NAME, null, null);
//      db.delete(this.ITEM_TABLE_NAME, null, null);
//      db.delete(this.CUSTOMER_TABLE_NAME, null, null);

    //Actual code
    dHelper = new DataHelper(context);
    db = dHelper.getWritableDatabase();
    boolean test = db.isOpen();
    test = db.isReadOnly();
    test = db.isDbLockedByCurrentThread();
    return this;
}

public void close(){
    dHelper.close();
    db.close();

}

public long addOrder(String id, String status, String confirmationCode, int hour,        int minute, String retailer, String retailerAddress, int qty){

    ContentValues values = new ContentValues();
    values.put(this.ORDER_KEY_ORDER_ID, id);
    values.put(this.ORDER_KEY_STATUS,status);
    values.put(this.ORDER_KEY_CONFIRMATIONCODE,confirmationCode);
    values.put(this.ORDER_KEY_HOUR, hour);
    values.put(this.ORDER_KEY_MINUTE,minute);
    values.put(this.ORDER_KEY_RETAILER, retailer);
    values.put(this.ORDER_KEY_RETAILERADDRESS,retailerAddress);
    values.put(this.ORDER_KEY_QTY,qty);

    return db.insert(this.ORDER_TABLE_NAME, null, values);



}

public long addItem(String id, String name, String orderId, String description, int  qty, String brand, int currentQty ,double price, String barcode){

    ContentValues values = new ContentValues();
    values.put(this.ITEM_KEY_NAME, name);
    values.put(this.ITEM_KEY_ORDER_ID, orderId);
    values.put(this.ITEM_KEY_DESCRIPTION, description);
    values.put(this.ITEM_KEY_QTY, qty);
    values.put(this.ITEM_KEY_BRAND, brand);
    values.put(this.ITEM_KEY_CURRENTQTY, currentQty);
    values.put(this.ITEM_KEY_PRICE, price);
    values.put(this.ITEM_KEY_ID, id);
    values.put(this.ITEM_KEY_BARCODE, barcode);

    return db.insert(this.ITEM_TABLE_NAME, null, values);   
}

public long addCustomer(String orderId, String name,String address, String country, String city ,String zipCode, String homePhone, String cellPhone){

    ContentValues values = new ContentValues();
    values.put(this.CUSTOMER_KEY_ORDER_ID, orderId);
    values.put(this.CUSTOMER_KEY_NAME, name);
    values.put(this.CUSTOMER_KEY_ADDRESS, address);
    values.put(this.CUSTOMER_KEY_COUNTRY, country);
    values.put(this.CUSTOMER_KEY_CITY, city);
    values.put(this.CUSTOMER_KEY_ZIPCODE, zipCode);
    values.put(this.CUSTOMER_KEY_HOMEPHONE,homePhone);
    values.put(this.CUSTOMER_KEY_CELLPHONE,cellPhone);


    return db.insert(this.CUSTOMER_TABLE_NAME, null, values);   
}

public int changeOrderStatus(String orderId, String status){

    ContentValues values = new ContentValues();
    values.put(ORDER_KEY_STATUS, status);
    return db.update(ORDER_TABLE_NAME, values, this.ORDER_KEY_ORDER_ID+"=?", new String[]{orderId});
}

public int changeItemCurrentQty(String orderId, String itemId, int currentQty){

    ContentValues values = new ContentValues();
    values.put(this.ITEM_KEY_CURRENTQTY, currentQty);


    return db.update(ITEM_TABLE_NAME, values, this.ITEM_KEY_ORDER_ID+"="+orderId+" and "+this.ITEM_KEY_ID+"="+itemId, null);
}

public int changeItemTotalQuantity(String orderId, String itemId, int qty){

    ContentValues values = new ContentValues();
    values.put(this.ITEM_KEY_QTY, qty);

    return db.update(this.ITEM_KEY_QTY,values,this.ITEM_KEY_ORDER_ID+"="+orderId+" and "+this.ITEM_KEY_ID+"="+itemId,null);
}

public Cursor getAllOrders(){

//      Cursor cursor = db.query(this.ORDER_TABLE_NAME, 
    //              new String[]{this.ORDER_KEY_ORDER_IDSQLITE,         this.ORDER_KEY_ORDER_ID, this.ORDER_KEY_RETAILER, this.ORDER_KEY_QTY, this.ORDER_KEY_STATUS         },
    //              null, 
    //              new String[]{}, 
    //              null,
    //              null,
    //              this.ORDER_KEY_ORDER_IDSQLITE);
        String query = "select "+this.ORDER_KEY_ORDER_IDSQLITE +",         "+this.ORDER_KEY_RETAILER+", "+this.ORDER_KEY_QTY+", "+this.ORDER_KEY_ORDER_ID+",         "+this.ORDER_KEY_STATUS+ " from the_order;";

        Cursor c = db.rawQuery(query, null);

        return c;

    }

    public void deleteAll(){

        db.delete(ORDER_TABLE_NAME, null, null);
        db.delete(ITEM_TABLE_NAME, null, null);
    db.delete(CUSTOMER_TABLE_NAME,null,null);
}

    public Cursor getAllItems(String orderId){

        Cursor c = db.query(this.ITEM_TABLE_NAME, new String[]    {this.ITEM_KEY_ITEM_ID_INC,     this.ITEM_KEY_NAME,this.ITEM_KEY_BRAND,this.ITEM_KEY_CURRENTQTY,this.ITEM_KEY_QTY},     this.ITEM_KEY_ORDER_ID+"=?", new String[]{orderId}, null, null, this.ITEM_KEY_ITEM_ID_INC);

    return c;
}

public Cursor getItemForList(String orderId, String itemId){

        Cursor c = db.query(this.ITEM_TABLE_NAME, new String[]    {this.ITEM_KEY_ITEM_ID_INC,this.ITEM_KEY_NAME,this.ITEM_KEY_BRAND,this.ITEM_KEY_CURRENTQTY,  this.ITEM_KEY_QTY}, this.ITEM_KEY_ORDER_ID+"=? and "+ this.ITEM_KEY_ID+" =?", new String[]     {orderId,itemId}, null, null, null);

    return c;
}

    public ArrayList<String> getItemDetails(String orderId, String itemId){
        Cursor c = db. query(this.ITEM_TABLE_NAME, new String[]      {this.ITEM_KEY_ITEM_ID_INC,this.ITEM_KEY_NAME,this.ITEM_KEY_BRAND,     this.ITEM_KEY_CURRENTQTY,this.ITEM_KEY_QTY,this.ITEM_KEY_PRICE,this.ITEM_KEY_DESCRIPTION},     this.ITEM_KEY_ID+" =? and "+ this.ITEM_KEY_ORDER_ID +" =?", new String[]{itemId,     orderId},null,null,null);
    //TODO
    c.moveToFirst();

    ArrayList<String> data = new ArrayList<String>();
    data.add(c.getString(c.getColumnIndex(this.ITEM_KEY_NAME)));
    data.add(c.getString(c.getColumnIndex(this.ITEM_KEY_BRAND)));
    data.add(((Double)     c.getDouble(c.getColumnIndex(this.ITEM_KEY_DESCRIPTION))).toString());
    data.add(c.getString(c.getColumnIndex(this.ITEM_KEY_CURRENTQTY)));
    data.add(c.getString(c.getColumnIndex(this.ITEM_KEY_QTY)));

    return data;
}

public ArrayList<String> getOrderDetails(String orderId){

    Cursor cursorOrder = db.query(this.ORDER_TABLE_NAME, new String[]   {this.ORDER_KEY_ORDER_IDSQLITE,     this.ORDER_KEY_STATUS,this.ORDER_KEY_RETAILER,this.ORDER_KEY_STATUS,this.ORDER_KEY_HOUR,thi  s.ORDER_KEY_MINUTE}, this.ORDER_KEY_ORDER_ID+" =?", new String[]{orderId}, null, null,     null);
        Cursor cursorCustomer = db.query(this.CUSTOMER_TABLE_NAME, new String[]    {this.CUSTOMER_KEY_ID,     this.CUSTOMER_KEY_NAME,this.CUSTOMER_KEY_ADDRESS,this.CUSTOMER_KEY_CITY,this.CUSTOMER_KEY_C  OUNTRY,this.CUSTOMER_KEY_ZIPCODE,this.CUSTOMER_KEY_CELLPHONE,this.CUSTOMER_KEY_HOMEPHONE},     this.CUSTOMER_KEY_ORDER_ID+" =?", new String[]{orderId}, null, null, null);

    cursorOrder.moveToFirst();
    cursorCustomer.moveToFirst();

    ArrayList<String> data = new ArrayList<String>();
    data.add(orderId);
         data.add(cursorOrder.getString(cursorOrder.getColumnIndex(this.ORDER_KEY_STATUS)));
         data.add(cursorOrder.getString(cursorOrder.getColumnIndex(this.ORDER_KEY_RETAILER)));

    //concat dateHour
    String date =     cursorOrder.getString(cursorOrder.getColumnIndex(this.ORDER_KEY_HOUR))+":"+cursorOrder.getS  tring(cursorOrder.getColumnIndex(this.ORDER_KEY_MINUTE));

        data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_NAME)));
        data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_ADDRESS)));
        data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_CITY)));
        data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_COUNTRY))  );
        data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_ZIPCODE)));
        data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_CELLPHONE)));
               data.add(cursorCustomer.getString(cursorCustomer.getColumnIndex(this.CUSTOMER_KEY_HOMEPHONE)));

        return data;
}

private class DataHelper extends SQLiteOpenHelper {





    public DataHelper(Context context){
        super(context,DATABASE_NAME,null,DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase arg0) {

        arg0.execSQL(ORDER_TABLE_CREATE);
        arg0.execSQL(ITEMS_TABLE_CREATE);
        arg0.execSQL(CUSTOMER_TABLE_CREATE);

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // TODO Auto-generated method stub
        Log.w("Orders","Upgrading database, this will drop tables and recreate.");
        //drop tables!!! TODO AS SOON AS BACK FROM LUNCH!!
        db.execSQL("drop table if exists "+ITEM_TABLE_NAME);
        db.execSQL("drop table if exists "+ORDER_TABLE_CREATE);
        db.execSQL("drop table if exists "+CUSTOMER_TABLE_NAME);
    }

}
}

This is the OrderList.Java in which I call the getAllOrders method on the OnCreate :

package com.orderdelivery;


import java.util.ArrayList;

import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.CursorAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView; 
import com.orderdelivery.DataAdapter;

public class OrderList extends ListActivity {

ArrayList<Order> orders;
OrderListAdapter oAdapter;
SimpleOrderAdapter oCursorAdapter;
static Order active = null;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {



    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    ListView list = getListView();
  //  list.setAdapter(oCursorAdapter);
       list.setOnItemClickListener(new OnItemClickListener(){

        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {


            startActivity(new    Intent("com.orderdelivery.GROCERYITEMLIST"));
            // TODO Auto-generated method stub
        }



       });

 //        orders = new ArrayList<Order>();
 //        
 //        for(int i =0; i<5;i++){
 //         orders.add(new Order("19995","Pueblo, Maya",i,"Pending", null, null,       null)); //Customer, items, confirmation...
 //        }
 //        
 //        oAdapter = new OrderListAdapter(this,R.layout.row,orders);
 //        list.setAdapter(oAdapter);
 //       
         DataAdapter dbAdapter = new DataAdapter(this);
         dbAdapter.open();

       dbAdapter.deleteAll();
       dbAdapter.addOrder("1995", "Pending", "100101", 12, 31, "Pueblo,Xtra",    "Mayaguez" , 1);
       dbAdapter.addCustomer("1995", "Robert Soler", "Urb. Villa Mofongo II3", "PR",    "Mayaguez", "00617", "787-391-5555", "787-391-5555");
       dbAdapter.addItem("0101", "Habichuelas Blancas", "1995", "Si es GOYA tiene que    ser bueno", 1, "Goya", 0, 2.75, "1001019");

    Cursor oCursor = dbAdapter.getAllOrders();
    oCursorAdapter = new SimpleOrderAdapter(this,R.layout.row,oCursor,null,null);

    list.setAdapter(oCursorAdapter);


}

public static Order getCurrentActiveOrder()
{
    return active;
}

public void setCurrentActiveOrder(Order o){
    active = o;
}

private class OrderListAdapter extends ArrayAdapter<Order> {

    private ArrayList<Order> orders;

    private OrderListAdapter(Context context, int textViewResourceId, ArrayList<Order>    orders)
    {
        super(context, textViewResourceId, orders);
        this.orders = orders;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {
        View v = convertView;
        if (v==null)
        {
            LayoutInflater vi = (LayoutInflater)    getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = vi.inflate(R.layout.row, null);
        }

        Order o = orders.get(position);
        if(o!=null){

            TextView orderNum = (TextView) v.findViewById(R.id.orderNumber);
            TextView location = (TextView) v.findViewById(R.id.location);
            TextView quantity = (TextView) v.findViewById(R.id.quantity);
            TextView status = (TextView) v.findViewById(R.id.status);

            if(orderNum!=null){
                orderNum.setText("Order " + o.getOrderNumber());

            }

            if(location!=null)
            {
                location.setText("Location: "+o.getOrderRetailer());
            }

            if(quantity!=null){
                quantity.setText("Qty: "+o.getTotalQuantity());

            }

            if(status!=null){
                status.setText("Status: "+ o.getStatus());
            }

        }

        return v;
    }
}

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
    // TODO Auto-generated method stub
    super.onListItemClick(l, v, position, id);

    Intent intent = new Intent("com.orderdelivery.GROCERYITEMLIST");

    Bundle bundle = new Bundle();

    bundle.putInt("position", position);


}

//Might be needed
public static Order getOrderAtPosition(int pos){

    return null;

}


private class SimpleOrderAdapter extends SimpleCursorAdapter {

    private LayoutInflater inflater;

    public SimpleOrderAdapter(Context context, int layout, Cursor c,
            String[] from, int[] to) {
        super(context, layout, c, from, to);
        // TODO Auto-generated constructor stub
    }

    @Override
    public void bindView(View v, Context context, Cursor c) {
        // TODO Auto-generated method stub
        super.bindView(v, context, c);
        TextView orderNum = (TextView) v.findViewById(R.id.orderNumber);
        TextView location = (TextView) v.findViewById(R.id.location);
        TextView quantity = (TextView) v.findViewById(R.id.quantity);
        TextView status = (TextView) v.findViewById(R.id.status);

        String orderNumString="Order "+    c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_ORDER_ID));
        String    locationString=c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_RETAILER));
        int qty = c.getInt(c.getColumnIndex(DataAdapter.ORDER_KEY_QTY));

        String statusString =    c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_STATUS));

        orderNum.setText(orderNumString);
        location.setText(locationString);
        quantity.setText(""+qty); //FIXXX
        status.setText(statusString);
    }

    @Override
    public View newView(Context context, Cursor c, ViewGroup parent) {
        // TODO Auto-generated method stub

        final LayoutInflater inflater = LayoutInflater.from(context);

        View v = inflater.inflate(R.layout.row, parent, false);


        TextView orderNum = (TextView) v.findViewById(R.id.orderNumber);
        TextView location = (TextView) v.findViewById(R.id.location);
        TextView quantity = (TextView) v.findViewById(R.id.quantity);
        TextView status = (TextView) v.findViewById(R.id.status);

        String orderNumString="Order "+ c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_ORDER_ID));
        String locationString="Location: "+c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_RETAILER));
        String qtyString ="Qty: "+ c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_QTY));
        String statusString = c.getString(c.getColumnIndex(DataAdapter.ORDER_KEY_STATUS));

        orderNum.setText(orderNumString);
        location.setText(locationString);
        quantity.setText(qtyString);
        status.setText(statusString);
        return v;



        }




}

}

This is my first post on the site so thanks to anyone who can help :)

'Edit' This is the logcat file output:

D/AndroidRuntime( 7415): CheckJNI is ON

D/AndroidRuntime( 7415): --- registering native functions ---

I/ActivityManager(   58): Starting activity: Intent { act=android.intent.action.MAIN     cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.orderdelivery/.OrderList }

I/ActivityManager(   58): Start proc com.orderdelivery for activity     com.orderdelivery/.OrderList: pid=7421 uid=10033 gids={1015}

D/AndroidRuntime( 7415): Shutting down VM

I/AndroidRuntime( 7415): NOTE: attach of thread 'Binder Thread #3' failed

D/dalvikvm( 7415): Debugger has detached; object registry had 1 entries

I/ARMAssembler(   58): generated scanline__00000077:03545404_00000004_00000000 [ 47   ipp] (67 ins) at [0x2ec420:0x2ec52c] in 1155044 ns

D/AndroidRuntime( 7421): Shutting down VM

W/dalvikvm( 7421): threadid=1: thread exiting with uncaught exception     (group=0x4001d800)

E/AndroidRuntime( 7421): FATAL EXCEPTION: main

E/AndroidRuntime( 7421): java.lang.RuntimeException: Unable to start activity      ComponentInfo{com.orderdelivery/com.orderdelivery.OrderList}:     java.lang.NullPointerException

E/AndroidRuntime( 7421):    at     android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)

E/AndroidRuntime( 7421):    at     android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)

E/AndroidRuntime( 7421):    at android.app.ActivityThread.access$2300(ActivityThread.java:125)

E/AndroidRuntime( 7421):    at     android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)

E/AndroidRuntime( 7421):    at android.os.Handler.dispatchMessage(Handler.java:99)

E/AndroidRuntime( 7421):    at android.os.Looper.loop(Looper.java:123)

E/AndroidRuntime( 7421):    at     android.app.ActivityThread.main(ActivityThread.java:4627)

E/AndroidRuntime( 7421):    at java.lang.reflect.Method.invokeNative(Native Method)

E/AndroidRuntime( 7421):    at java.lang.reflect.Method.invoke(Method.java:521)

E/AndroidRuntime( 7421):    at     com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)

E/AndroidRuntime( 7421):    at    com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)

E/AndroidRuntime( 7421):    at dalvik.system.NativeStart.main(Native Method)

E/AndroidRuntime( 7421): Caused by: java.lang.NullPointerException

E/AndroidRuntime( 7421):    at     android.widget.SimpleCursorAdapter.findColumns(SimpleCursorAdapter.java:307)

E/AndroidRuntime( 7421):    at android.widget.SimpleCursorAdapter.<init>  (SimpleCursorAdapter.java:87)

E/AndroidRuntime( 7421):    at com.orderdelivery.OrderList$SimpleOrderAdapter.<init>   (OrderList.java:171)

E/AndroidRuntime( 7421):    at com.orderdelivery.OrderList.onCreate(OrderList.java:74)

E/AndroidRuntime( 7421):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)

E/AndroidRuntime( 7421):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

E/AndroidRuntime( 7421):    ... 11 more

W/ActivityManager(   58):   Force finishing activity com.orderdelivery/.OrderList

W/ActivityManager(   58): Activity pause timeout for HistoryRecord{43f91798     com.orderdelivery/.OrderList}

I/ARMAssembler(   58): generated scanline__00000077:03515104_00000000_00000000 [ 33    ipp] (47 ins) at [0x329870:0x32992c] in 2032590 ns

D/AndroidRuntime( 7435): 

Answer 1

Your SimpleOrderAdapter subclasses SimpleCursorAdapter . You create it with a cursor (the result from your query) and null values for from and to . According to the javadoc, this is only allowed when the cursor is not available yet .

I see, that the application crashes during creation of a new SimpleOrderAdapter instance and therefor after the query. Looks to me, that you have to create this adapter with real values (column names and the indexes/ids of the text views).