android.database.sqlite.SQLiteException: no such table: liongenman16b1(Sqlite code 1): ，编译时：
android.database.sqlite.SQLiteException: no such table: liongenman16b1(Sqlite code 1): , while compiling:
**我正在使用现有的数据库。首先我在 sqlite 管理器中创建一个数据库，然后将其放入断言中。 **
You can see my database screen shoot and here also exits my table which i am calling DBhelper class
** 错误是**
android.database.sqlite.SQLiteException: no such table: liongenman16b1(Sqlite code 1): , while compiling: SELECT DISTINCT street FROM liongenman16b1 ORDER BY street,(OS error - 2:No such file or directory)
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.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1334)
at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1268)
at com.example.rehankhan.parkken_app.Database.DBhelper.Get_Street(DBhelper.java:74)
at com.example.rehankhan.parkken_app.Fragments.Search_Frag.onCreateView(Search_Frag.java:80)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2087)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1113)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1295)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1643)
at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1272)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1120)
at android.support.v4.view.ViewPager.run(ViewPager.java:277)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:799)
at android.view.Choreographer.doCallbacks(Choreographer.java:612)
at android.view.Choreographer.doFrame(Choreographer.java:580)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:785)
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:5593)
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:960)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
我的 DBHelper Class
package com.example.rehankhan.parkken_app.Database;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import com.example.rehankhan.parkken_app.Model.mapelmt;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Rehan Khan on 3/13/2017.
*/
public class DBhelper extends SQLiteOpenHelper {
private Context acontext;
public static final String DBNAME="mapdata.sqlite";
public static final String TABLE="liongenman16b1";
public static final String DBLOCATION="/data/data/com.example.rehankhan.parkken_app/databases/";
private SQLiteDatabase mdatabase;
public DBhelper(Context context)
{
super(context, "mapdata.sqlite",null, 1);
this.acontext=context;
}
public void openDatabase(){
String dbpath=acontext.getDatabasePath(DBNAME).getPath();
if(mdatabase !=null && mdatabase.isOpen()){
return;
}
File file = new File(dbpath);
if (file.exists() && !file.isDirectory())
mdatabase = SQLiteDatabase.openDatabase(dbpath, null, SQLiteDatabase.OPEN_READWRITE);
// mdatabase = SQLiteDatabase.openDatabase(dbpath, null, SQLiteDatabase.OPEN_READWRITE);
}
public void closeDatabase(){
if(mdatabase!=null){
mdatabase.close();
}
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
}
@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
}
public List<mapelmt> Get_Street(){
List<mapelmt> MapelmentsArry=null;
long result;
String course,time,room;
openDatabase();
SQLiteDatabase db = getReadableDatabase();
// Toast.makeText(get, "Your BMI is " + result, Toast.LENGTH_SHORT).show();
String query = "SELECT DISTINCT street FROM " + TABLE + " ORDER BY street";
//String query = "SELECT DISTINCT street FROM liongenman16b1 ORDER BY street";
游标cursor = db.rawQuery(query, null); //这一行有错误 DBhelper.java:67
if(cursor.moveToNext()) {
MapelmentsArry = new ArrayList<>();
do {
mapelmt data = new mapelmt();
///okk here 2
data.setStreet(cursor.getString(cursor.getColumnIndex("street")));
MapelmentsArry.add(data);
}while (cursor.moveToNext());
}
else{
return null;
}
// Log.e("arry", String.valueOf(time_table.length));
cursor.close();
closeDatabase();
return MapelmentsArry;
}
}
**我的代码 class 我正在调用 DBhelper class 。我知道认识你不是很有必要 **
package com.example.rehankhan.parkken_app.Fragments;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import com.example.rehankhan.parkken_app.Adapter.MapElementAdapter;
import com.example.rehankhan.parkken_app.Database.DBhelper;
import com.example.rehankhan.parkken_app.Model.mapelmt;
import com.example.rehankhan.parkken_app.R;
import java.util.List;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link Search_Frag.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link Search_Frag#newInstance} factory method to
* create an instance of this fragment.
*/
public class Search_Frag extends Fragment {
// 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;
private ListView listView;
MapElementAdapter adapter;
private List<mapelmt> streetList;
DBhelper data;
public Search_Frag() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment Search_Frag.
*/
// TODO: Rename and change types and number of parameters
public static Search_Frag newInstance(String param1, String param2) {
Search_Frag fragment = new Search_Frag();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v= inflater.inflate(R.layout.fragment_search_, container, false);
listView=(ListView) v.findViewById(R.id.street_list);
data=new DBhelper(this.getContext());
streetList=data.Get_Street(); //this error line (Search_Frag.java:80)
if(streetList!=null)
{
adapter=new MapElementAdapter(this.getContext(),streetList);
///set Adapter
listView.setAdapter(adapter);
// Toast.makeText(getBaseContext(),"you couse"+inset_Course,Toast.LENGTH_LONG).show();
}
return v;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* 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
void onFragmentInteraction(Uri uri);
}
}
我想你错过了创建 table 的代码。
只需添加此代码
@Override
public void onCreate(SQLiteDatabase db) {
Log.e(TAG, "onCreate Database");
db.execSQL("# Add here your create table code ");
}
已编辑答案
那么你需要按照这个代码。
public static class DataBaseHelper extends SQLiteOpenHelper {
private static Context mContext;
private static String DB_PATH = "";
private static final String ASSETS_DATABASE_NAME = "mapdata.sqlite";
private DataBaseHelper(Context context) {
super(context, DBNAME, null, 1);
mContext = context;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
DB_PATH = context.getApplicationInfo().dataDir + "/databases/";
} else {
DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
}
new Handler().post(new Runnable() {
@Override
public void run() {
// If u want to Copy Database from Assets.
try {
CopyAndCreateDataBase();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
// If database not exists copy it from the assets
public void CopyAndCreateDataBase() throws IOException {
boolean mDataBaseExist = checkDataBase();
if (!mDataBaseExist) {
this.getReadableDatabase();
this.getWritableDatabase();
this.close();
try {
// Copy the database from assests
copyDataBase();
String mPath = DB_PATH + DBNAME;
Log.v(TAG, "Database created : " + mPath);
} catch (IOException mIOException) {
throw new Error("ErrorCopyingDataBase");
}
}
}
// Check that the database exists here: /data/data/yourpackage/databases/DatabaseName
private boolean checkDataBase() {
File dbFile = new File(DB_PATH + DBNAME);
// Log.v("dbFile", dbFile + " "+ dbFile.exists());
return dbFile.exists();
}
// Copy the database from assets
private void copyDataBase() throws IOException {
InputStream mInput = mContext.getAssets().open(ASSETS_DATABASE_NAME);
String outFileName = DB_PATH + DBNAME;
OutputStream mOutput = new FileOutputStream(outFileName);
byte[] mBuffer = new byte[1024];
int mLength;
while ((mLength = mInput.read(mBuffer)) > 0) {
mOutput.write(mBuffer, 0, mLength);
}
mOutput.flush();
mOutput.close();
mInput.close();
}
}
**我正在使用现有的数据库。首先我在 sqlite 管理器中创建一个数据库，然后将其放入断言中。 ** You can see my database screen shoot and here also exits my table which i am calling DBhelper class
** 错误是**
android.database.sqlite.SQLiteException: no such table: liongenman16b1(Sqlite code 1): , while compiling: SELECT DISTINCT street FROM liongenman16b1 ORDER BY street,(OS error - 2:No such file or directory)
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.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1334)
at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1268)
at com.example.rehankhan.parkken_app.Database.DBhelper.Get_Street(DBhelper.java:74)
at com.example.rehankhan.parkken_app.Fragments.Search_Frag.onCreateView(Search_Frag.java:80)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2087)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1113)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1295)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801)
at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1643)
at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1272)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1120)
at android.support.v4.view.ViewPager.run(ViewPager.java:277)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:799)
at android.view.Choreographer.doCallbacks(Choreographer.java:612)
at android.view.Choreographer.doFrame(Choreographer.java:580)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:785)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5593)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
我的 DBHelper Class
package com.example.rehankhan.parkken_app.Database;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import com.example.rehankhan.parkken_app.Model.mapelmt;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Rehan Khan on 3/13/2017.
*/
public class DBhelper extends SQLiteOpenHelper {
private Context acontext;
public static final String DBNAME="mapdata.sqlite";
public static final String TABLE="liongenman16b1";
public static final String DBLOCATION="/data/data/com.example.rehankhan.parkken_app/databases/";
private SQLiteDatabase mdatabase;
public DBhelper(Context context)
{
super(context, "mapdata.sqlite",null, 1);
this.acontext=context;
}
public void openDatabase(){
String dbpath=acontext.getDatabasePath(DBNAME).getPath();
if(mdatabase !=null && mdatabase.isOpen()){
return;
}
File file = new File(dbpath);
if (file.exists() && !file.isDirectory())
mdatabase = SQLiteDatabase.openDatabase(dbpath, null, SQLiteDatabase.OPEN_READWRITE);
// mdatabase = SQLiteDatabase.openDatabase(dbpath, null, SQLiteDatabase.OPEN_READWRITE);
}
public void closeDatabase(){
if(mdatabase!=null){
mdatabase.close();
}
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
}
@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
}
public List<mapelmt> Get_Street(){
List<mapelmt> MapelmentsArry=null;
long result;
String course,time,room;
openDatabase();
SQLiteDatabase db = getReadableDatabase();
// Toast.makeText(get, "Your BMI is " + result, Toast.LENGTH_SHORT).show();
String query = "SELECT DISTINCT street FROM " + TABLE + " ORDER BY street";
//String query = "SELECT DISTINCT street FROM liongenman16b1 ORDER BY street";
游标cursor = db.rawQuery(query, null); //这一行有错误 DBhelper.java:67
if(cursor.moveToNext()) {
MapelmentsArry = new ArrayList<>();
do {
mapelmt data = new mapelmt();
///okk here 2
data.setStreet(cursor.getString(cursor.getColumnIndex("street")));
MapelmentsArry.add(data);
}while (cursor.moveToNext());
}
else{
return null;
}
// Log.e("arry", String.valueOf(time_table.length));
cursor.close();
closeDatabase();
return MapelmentsArry;
}
}
**我的代码 class 我正在调用 DBhelper class 。我知道认识你不是很有必要 **
package com.example.rehankhan.parkken_app.Fragments;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import com.example.rehankhan.parkken_app.Adapter.MapElementAdapter;
import com.example.rehankhan.parkken_app.Database.DBhelper;
import com.example.rehankhan.parkken_app.Model.mapelmt;
import com.example.rehankhan.parkken_app.R;
import java.util.List;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link Search_Frag.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link Search_Frag#newInstance} factory method to
* create an instance of this fragment.
*/
public class Search_Frag extends Fragment {
// 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;
private ListView listView;
MapElementAdapter adapter;
private List<mapelmt> streetList;
DBhelper data;
public Search_Frag() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment Search_Frag.
*/
// TODO: Rename and change types and number of parameters
public static Search_Frag newInstance(String param1, String param2) {
Search_Frag fragment = new Search_Frag();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v= inflater.inflate(R.layout.fragment_search_, container, false);
listView=(ListView) v.findViewById(R.id.street_list);
data=new DBhelper(this.getContext());
streetList=data.Get_Street(); //this error line (Search_Frag.java:80)
if(streetList!=null)
{
adapter=new MapElementAdapter(this.getContext(),streetList);
///set Adapter
listView.setAdapter(adapter);
// Toast.makeText(getBaseContext(),"you couse"+inset_Course,Toast.LENGTH_LONG).show();
}
return v;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* 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
void onFragmentInteraction(Uri uri);
}
}
我想你错过了创建 table 的代码。
只需添加此代码
@Override
public void onCreate(SQLiteDatabase db) {
Log.e(TAG, "onCreate Database");
db.execSQL("# Add here your create table code ");
}
已编辑答案
那么你需要按照这个代码。
public static class DataBaseHelper extends SQLiteOpenHelper {
private static Context mContext;
private static String DB_PATH = "";
private static final String ASSETS_DATABASE_NAME = "mapdata.sqlite";
private DataBaseHelper(Context context) {
super(context, DBNAME, null, 1);
mContext = context;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
DB_PATH = context.getApplicationInfo().dataDir + "/databases/";
} else {
DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
}
new Handler().post(new Runnable() {
@Override
public void run() {
// If u want to Copy Database from Assets.
try {
CopyAndCreateDataBase();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
// If database not exists copy it from the assets
public void CopyAndCreateDataBase() throws IOException {
boolean mDataBaseExist = checkDataBase();
if (!mDataBaseExist) {
this.getReadableDatabase();
this.getWritableDatabase();
this.close();
try {
// Copy the database from assests
copyDataBase();
String mPath = DB_PATH + DBNAME;
Log.v(TAG, "Database created : " + mPath);
} catch (IOException mIOException) {
throw new Error("ErrorCopyingDataBase");
}
}
}
// Check that the database exists here: /data/data/yourpackage/databases/DatabaseName
private boolean checkDataBase() {
File dbFile = new File(DB_PATH + DBNAME);
// Log.v("dbFile", dbFile + " "+ dbFile.exists());
return dbFile.exists();
}
// Copy the database from assets
private void copyDataBase() throws IOException {
InputStream mInput = mContext.getAssets().open(ASSETS_DATABASE_NAME);
String outFileName = DB_PATH + DBNAME;
OutputStream mOutput = new FileOutputStream(outFileName);
byte[] mBuffer = new byte[1024];
int mLength;
while ((mLength = mInput.read(mBuffer)) > 0) {
mOutput.write(mBuffer, 0, mLength);
}
mOutput.flush();
mOutput.close();
mInput.close();
}
}