I want to store some data when mobile is not in covered area. and when service came back it will upload data on the server. but data is not inserting. i`ve checked many tutorail on net. but same all the time. app close unexpecdately.
LogCat error
10-12 12:08:54.754: E/Service Example(1374): Service Started..
10-12 12:08:54.814: E/AndroidRuntime(1374): FATAL EXCEPTION: main
10-12 12:08:54.814: E/AndroidRuntime(1374): java.lang.RuntimeException: Unable create service com.remote.synchronizer.haris.OfflineDataService: java.lang.NullPointerException
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.app.ActivityThread.handleCreateService(ActivityThread.java:1955)
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.app.ActivityThread.access$2500(ActivityThread.java:117)
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:985)
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.os.Handler.dispatchMessage(Handler.java:99)
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.os.Looper.loop(Looper.java:123)
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.app.ActivityThread.main(ActivityThread.java:3683)
10-12 12:08:54.814: E/AndroidRuntime(1374): at java.lang.reflect.Method.invokeNative(Native Method)
10-12 12:08:54.814: E/AndroidRuntime(1374): at java.lang.reflect.Method.invoke(Method.java:507)
10-12 12:08:54.814: E/AndroidRuntime(1374): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-12 12:08:54.814: E/AndroidRuntime(1374): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-12 12:08:54.814: E/AndroidRuntime(1374): at dalvik.system.NativeStart.main(Native Method)
10-12 12:08:54.814: E/AndroidRuntime(1374): Caused by: java.lang.NullPointerException
10-12 12:08:54.814: E/AndroidRuntime(1374): at com.remote.synchronizer.haris.SQLiteAdapter.Write(SQLiteAdapter.java:59)
10-12 12:08:54.814: E/AndroidRuntime(1374): at com.remote.synchronizer.haris.OfflineDataService.onCreate(OfflineDataService.java:37)
10-12 12:08:54.814: E/AndroidRuntime(1374): at android.app.ActivityThread.handleCreateService(ActivityThread.java:1945)
10-12 12:08:54.814: E/AndroidRuntime(1374): ... 10 more
SQLiteAdapter
package com.remote.synchronizer.haris;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class SQLiteAdapter extends SQLiteOpenHelper {
public static final String DATABASE_NAME = "Product";
public static final String TABLE_NAME = "Order";
public static final int DATABASE_VERSION = 1;
public static final String KEY_ID = "_id";
public static final String KEY_NAME = "name";
public static final String KEY_SHOP = "shop";
private static final String KEY_CITY = "city";
private static final String KEY_DATE = "date";
private static final String KEY_ORDER = "order";
private static final String CREATE_TABLE =
"CREATE TABLE " + TABLE_NAME + " ("
+ KEY_ID + " integer primary key autoincrement, "
+ KEY_NAME + " VARCHAR,"
+ KEY_SHOP + " VARCHAR," + KEY_CITY + " VARCHAR, " + KEY_DATE + " VARCHAR, " + KEY_ORDER + " VARCHAR " + ");";
public SQLiteAdapter(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(CREATE_TABLE);
}
private SQLiteDatabase sqLiteDatabase;
private SQLiteAdapter sqLiteHelper;
/*private Context context;
public SQLiteAdapter(Context c){
context = c;
}
*/
public void Read() throws android.database.SQLException {
sqLiteDatabase = sqLiteHelper.getReadableDatabase();
}
public void Write() throws android.database.SQLException {
sqLiteDatabase = sqLiteHelper.getWritableDatabase();
}
public void close(){
sqLiteHelper.close();
}
public long insert(String name, String shop, String city, String date, String order){
ContentValues contentValues = new ContentValues();
contentValues.put(KEY_NAME, name);
contentValues.put(KEY_SHOP, shop);
contentValues.put(KEY_SHOP, city);
contentValues.put(KEY_DATE, date);
contentValues.put(KEY_ORDER, order);
return sqLiteDatabase.insert(TABLE_NAME, null, contentValues);
}
public int deleteAll(){
return sqLiteDatabase.delete(TABLE_NAME, null, null);
}
/*public void delete_byID(int id){
sqLiteDatabase.delete(TABLE_NAME, KEY_ID+"="+id, null);
}
public Cursor queueAll(){
String[] columns = new String[]{KEY_ID, KEY_NAME, KEY_SHOP, KEY_CITY, KEY_DATE, KEY_ORDER};
Cursor cursor = sqLiteDatabase.query(TABLE_NAME, columns,
null, null, null, null, null);
return cursor;
}*/
public List<NameValuePair> getAllContacts() {
List<NameValuePair> postParameters = new ArrayList<NameValuePair>();
String selectQuery = "SELECT * FROM " + TABLE_NAME;
Read();
Cursor cursor = sqLiteDatabase.rawQuery(selectQuery, null);
if(cursor.moveToFirst()){
while(!cursor.isAfterLast())
{
postParameters.add(new BasicNameValuePair("User", cursor.getString(cursor.getColumnIndex(KEY_NAME))));
postParameters.add(new BasicNameValuePair("ShopName", cursor.getString(cursor.getColumnIndex(KEY_SHOP))));
postParameters.add(new BasicNameValuePair("city", cursor.getString(cursor.getColumnIndex(KEY_CITY))));
postParameters.add(new BasicNameValuePair("OrderDate", cursor.getString(cursor.getColumnIndex(KEY_DATE))));
postParameters.add(new BasicNameValuePair("OrderDetail", cursor.getString(cursor.getColumnIndex(KEY_ORDER))));
cursor.moveToNext();
}
}
cursor.close();
return postParameters;
};
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(SQLiteAdapter.class.getName(),
"Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS " + CREATE_TABLE);
onCreate(db);
}
}
OfflineDataService.java
package com.remote.synchronizer.haris;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import org.apache.http.NameValuePair;
import android.app.IntentService;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
public class OfflineDataService extends IntentService {
boolean wifi,edge;
private Timer timer= new Timer();
SQLiteDatabase db;
String un,shop,city,date,order;
private SQLiteAdapter mySQLiteAdapter;
Cursor cursor;
public OfflineDataService() {
super("OfflineDataService");
}
@Override
public void onCreate() {
super.onCreate();
Log.e("Service Example", "Service Started.. ");
mySQLiteAdapter = new SQLiteAdapter(this);
mySQLiteAdapter.Write();
}
@Override
protected void onHandleIntent(Intent intent) {
Bundle bundle=intent.getExtras();
un=bundle.getString("un");
shop=bundle.getString("shop");
city=bundle.getString("city");
date=bundle.getString("date");
order=bundle.getString("order");
Log.e("Service Started", "Successful");
//Inserting New Record
mySQLiteAdapter.insert(un,shop,city,date,order);
timer.scheduleAtFixedRate(new TimerTask(){
@Override
public void run() {
//Checking network connectivity
wifi=NetworkInfo.Wifi(OfflineDataService.this);
edge=NetworkInfo.EDGE(OfflineDataService.this);
if(wifi==true||edge==true)
{
DataSender();
}
else
{
//Toast toast=Toast.makeText(getApplicationContext(), "Testing", toast.LENGTH_LONG).show();
}
}
}, 1000, 5000);
}
/*@Override
public void onDestroy() {
super.onDestroy();
Log.e("Service Example", "Service Destroyed.. ");
mySQLiteAdapter.deleteAll();
}*/
private void DataSender()
{
timer.cancel();
List<NameValuePair> contacts=new ArrayList<NameValuePair>();
contacts=mySQLiteAdapter.getAllContacts();
String url="http://10.0.2.2:3325/Product/Create?";
int response = 0;
try
{
response = CustomHttpClient.executeHttpPost(url, contacts);
if(response==200)
{
//notification
}
else{}
//error.setText("Sorry!! Try again later.\n Response Code: "+ response);
}
catch (Exception e)
{
e.printStackTrace();
// error.setText(e.toString());
}
}
}
What’s wrong with my code?
New Error in log cat
10-12 14:57:00.424: E/Service Example(1494): Service Started..
10-12 14:57:00.664: E/Database(1494): Failure 1 (near "Order": syntax error) on 0x5b7638 when preparing 'CREATE TABLE Order (_id integer primary key autoincrement, name VARCHAR,shop VARCHAR,city VARCHAR, date VARCHAR, order VARCHAR );'.
10-12 14:57:00.764: E/AndroidRuntime(1494): FATAL EXCEPTION: main
10-12 14:57:00.764: E/AndroidRuntime(1494): java.lang.RuntimeException: Unable to create service com.remote.synchronizer.haris.OfflineDataService: android.database.sqlite.SQLiteException: near "Order": syntax error: CREATE TABLE Order (_id integer primary key autoincrement, name VARCHAR,shop VARCHAR,city VARCHAR, date VARCHAR, order VARCHAR );
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.app.ActivityThread.handleCreateService(ActivityThread.java:1955)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.app.ActivityThread.access$2500(ActivityThread.java:117)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:985)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.os.Handler.dispatchMessage(Handler.java:99)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.os.Looper.loop(Looper.java:123)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.app.ActivityThread.main(ActivityThread.java:3683)
10-12 14:57:00.764: E/AndroidRuntime(1494): at java.lang.reflect.Method.invokeNative(Native Method)
10-12 14:57:00.764: E/AndroidRuntime(1494): at java.lang.reflect.Method.invoke(Method.java:507)
10-12 14:57:00.764: E/AndroidRuntime(1494): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-12 14:57:00.764: E/AndroidRuntime(1494): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-12 14:57:00.764: E/AndroidRuntime(1494): at dalvik.system.NativeStart.main(Native Method)
10-12 14:57:00.764: E/AndroidRuntime(1494): Caused by: android.database.sqlite.SQLiteException: near "Order": syntax error: CREATE TABLE Order (_id integer primary key autoincrement, name VARCHAR,shop VARCHAR,city VARCHAR, date VARCHAR, order VARCHAR );
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.database.sqlite.SQLiteDatabase.native_execSQL(Native Method)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1763)
10-12 14:57:00.764: E/AndroidRuntime(1494): at com.remote.synchronizer.haris.SQLiteAdapter.onCreate(SQLiteAdapter.java:42)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:126)
10-12 14:57:00.764: E/AndroidRuntime(1494): at com.remote.synchronizer.haris.SQLiteAdapter.Write(SQLiteAdapter.java:59)
10-12 14:57:00.764: E/AndroidRuntime(1494): at com.remote.synchronizer.haris.OfflineDataService.onCreate(OfflineDataService.java:37)
10-12 14:57:00.764: E/AndroidRuntime(1494): at android.app.ActivityThread.handleCreateService(ActivityThread.java:1945)
10-12 14:57:00.764: E/AndroidRuntime(1494): ... 10 more
You define your
sqLiteHelperbut never initialize it. This means when this line below (in yourWrite()method) is run, it causes theNullPointerExceptionshown in logcat.Change it to…
..or make sure
sqLiteHelperis intialized before use.NOTE: As it stands, your
Read()method will fail in the same way unless you initializesqLiteHelperor usthisinstead.