我试图在我的数据库中插入一些值，但我得到语法错误，我不知道为什么......任何人都可以帮助我吗？ ：）
数据库代码：
package com.cetabo.trackingpoint.util;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.provider.ContactsContract;
import android.util.Log;
import java.util.Date;
/**
* Created by VladxD on 5/16/2015.
*/
public class DataBase extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 2;
private static final String TABLE_NAME = "TrackedLocations";
private static int ID;
public static String created;
public static String guid;
public static String lng;
private static String lat;
private static String syncronized;
private static String sync_date;
private static String sync_status;
private static final String TABLE_CREATE = "CREATE TABLE " + TABLE_NAME + "(" + ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
+ created + " DEFAULT CURRENT_TIMESTAMP,"
+ guid + " VARCHAR(32),"
+ lng + " VARCHAR,"
+ lat + " VARCHAR,"
+ syncronized + " CHAR(1),"
+ sync_date + " DEFAULT NULL,"
+ sync_status + " CHAR(3)" + ");";
public DataBase(Context context) {
super(context, TABLE_NAME, null, DATABASE_VERSION);
Log.d("Database operation", "Table has created");
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(TABLE_CREATE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
public void insertInformation(DataBase db, String guid, String lon, String lat, String syncronized, Date sync_date, String sync_status) {
SQLiteDatabase database = db.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("guid", guid);
values.put("lon", lon);
values.put("lat", lat);
values.put("syncronized", syncronized);
values.put("sync_date", String.valueOf(sync_date));
values.put("sync_status", sync_status);
database.insert(TABLE_NAME, null, values);
Log.d("Database operation", "Insert on row");
db.close();
}
}
这是我的类，我尝试将信息插入数据库
package com.cetabo.trackingpoint;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.TextView;
import com.cetabo.trackingpoint.dummy.DummyContent;
import com.cetabo.trackingpoint.util.DataBase;
import com.cetabo.trackingpoint.util.DetectionLocation;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
/**
* A fragment representing a list of Items.
* <p/>
* Large screen devices (such as tablets) are supported by replacing the ListView
* with a GridView.
* <p/>
* Activities containing this fragment MUST implement the {@link OnFragmentInteractionListener}
* interface.
*/
public class PlacesFragment extends Fragment implements AbsListView.OnItemClickListener {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
/**
* The fragment's ListView/GridView.
*/
private AbsListView mListView;
ImageView imageView;
/**
* The Adapter which will be used to populate the ListView/GridView with
* Views.
*/
private ListAdapter mAdapter;
// TODO: Rename and change types of parameters
public static PlacesFragment newInstance(String param1, String param2) {
PlacesFragment fragment = new PlacesFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
/**
* Mandatory empty constructor for the fragment manager to instantiate the
* fragment (e.g. upon screen orientation changes).
*/
public PlacesFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
// TODO: Change Adapter to display your content
// mAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, android.R.id.text1, DummyContent.ITEMS);
}
String[] test = {"test", "test"};
String text = "Central Park";
Date data = new Date();
// PreferenceFragment preferenceFragment;
// ListPreference listPreference = (ListPreference) preferenceFragment.findPreference("sync_frequency");
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.fragment_place, container, false);
Context ctx = view.getContext();
DataBase db = new DataBase(getActivity().getApplicationContext());
final DetectionLocation detectionLocation = new DetectionLocation(ctx);
// CustomListAdapter adapter=new CustomListAdapter(getActivity(),test,String.valueOf(detectionLocation.getLongitude()+" "+detectionLocation.getLatitude()),data);
// mListView = (AbsListView) view.findViewById(android.R.id.list);
// mListView.setAdapter(adapter);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ctx);
// then you use
Integer val = Integer.valueOf(prefs.getString("sync_frequency", ""));
String sync_status = String.valueOf(val);
CustomListAdapter adapter = new CustomListAdapter(getActivity(), test, String.valueOf(detectionLocation.getLongitude() + " " + detectionLocation.getLatitude()), data);
db.insertInformation(db,"Guid",String.valueOf(detectionLocation.getLongitude()),String.valueOf(detectionLocation.getLatitude()),"Sincronizare",data, sync_status );
mListView = (AbsListView) view.findViewById(android.R.id.list);
mListView.setAdapter(adapter);
Timer timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
CustomListAdapter adapter = new CustomListAdapter(getActivity(), test, String.valueOf(detectionLocation.getLongitude() + " " + detectionLocation.getLatitude()), data);
mListView = (AbsListView) view.findViewById(android.R.id.list);
mListView.setAdapter(adapter);
}
});
}
}, val);
// getActivity().runOnUiThread(new Runnable() {
// @Override
// public void run() {
// CustomListAdapter adapter = new CustomListAdapter(getActivity(), test, String.valueOf(detectionLocation.getLongitude() + " " + detectionLocation.getLatitude()), data);
// mListView = (AbsListView) view.findViewById(android.R.id.list);
// mListView.setAdapter(adapter);
// }
// });
mListView.setOnItemClickListener(this);
// Set OnItemClickListener so we can be notified on item clicks
//EU/////////////
// System.out.printf(String.valueOf(listPreference.getValue()));
//////////////////////////
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
// try {
// mListener = (OnFragmentInteractionListener) activity;
// } catch (ClassCastException e) {
// throw new ClassCastException(activity.toString()
// + " must implement OnFragmentInteractionListener");
// }
// SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(activity);
// String myPref = sharedPrefs.getString("sync_frequency", "");
// System.out.printf("Valuarea mea este: "+myPref);
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (null != mListener) {
// Notify the active callbacks interface (the activity, if the
// fragment is attached to one) that an item has been selected.
mListener.onFragmentInteraction(DummyContent.ITEMS.get(position).id);
}
}
/**
* The default content for this Fragment has a TextView that is shown when
* the list is empty. If you would like to change the text, call this method
* to supply the text it should use.
*/
public void setEmptyText(CharSequence emptyText) {
View emptyView = mListView.getEmptyView();
if (emptyView instanceof TextView) {
((TextView) emptyView).setText(emptyText);
}
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
public void onFragmentInteraction(String id);
}
}
这是我的错误：
Process: com.cetabo.trackingpoint, PID: 5764
android.database.sqlite.SQLiteException: near "0": syntax error (code 1): , while compiling: CREATE TABLE TrackedLocations(0 INTEGER PRIMARY KEY AUTOINCREMENT,null DEFAULT CURRENT_TIMESTAMP,null VARCHAR(32),null VARCHAR,null VARCHAR,null CHAR(1),null DEFAULT NULL,null CHAR(3));
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1674)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1605)
at com.cetabo.trackingpoint.util.DataBase.onCreate(DataBase.java:42)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:251)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
at com.cetabo.trackingpoint.util.DataBase.insertInformation(DataBase.java:51)
at com.cetabo.trackingpoint.PlacesFragment.onCreateView(PlacesFragment.java:114)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:953)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1136)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1499)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:456)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
你知道我能做些什么才能让它发挥作用吗？
答案 0 :(得分：0)
您需要为列名提供值：
public static String created;
public static String guid;
public static String lng;
private static String lat;
private static String syncronized;
private static String sync_date;
private static String sync_status;
例如，
public static String created = "created";
等等。