每当我向数据库添加一些表时，都会收到此错误。如果我删除我的游戏并再次安装它，我没有得到那个错误，所以有那个表。我试图将数据库版本更改为2而不是1，但它会更新但仍然会收到错误。有什么问题？这是logcat：
04-17 20:01:08.117: D/szipinf(10494): Initializing inflate state
04-17 20:01:08.217: D/szipinf(10494): Initializing inflate state
04-17 20:01:08.227: D/szipinf(10494): Initializing zlib to inflate
04-17 20:01:10.277: E/DataBaseHelper(10494): database updated
04-17 20:01:10.507: I/Database(10494): sqlite returned: error code = 1, msg = no such table: tblLogicTest
04-17 20:01:10.507: E/DataAdapter(10494): getTestData >>android.database.sqlite.SQLiteException: no such table: tblLogicTest: , while compiling: SELECT * FROM tblLogicTest WHERE 1 = 1 ORDER BY _ID ASC
04-17 20:01:10.507: D/AndroidRuntime(10494): Shutting down VM
04-17 20:01:10.507: W/dalvikvm(10494): threadid=1: thread exiting with uncaught exception (group=0x40018560)
04-17 20:01:10.527: E/AndroidRuntime(10494): FATAL EXCEPTION: main
04-17 20:01:10.527: E/AndroidRuntime(10494): java.lang.RuntimeException: Unable to start activity ComponentInfo{rs.androidaplikacije.themostcompleteiqtest/rs.androidaplikacije.themostcompleteiqtest.LogicTest}: android.database.sqlite.SQLiteException: no such table: tblLogicTest: , while compiling: SELECT * FROM tblLogicTest WHERE 1 = 1 ORDER BY _ID ASC
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.ActivityThread.performLaunchActivity(ActivityThread.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.ActivityThread.access$1500(ActivityThread.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.ActivityThread$H.handleMessage(ActivityThread.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.os.Looper.loop(Looper.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.ActivityThread.main(ActivityThread.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 20:01:10.527: E/AndroidRuntime(10494): at java.lang.reflect.Method.invoke(Method.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at com.android.internal.os.ZygoteInit.main(ZygoteInit.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at dalvik.system.NativeStart.main(Native Method)
04-17 20:01:10.527: E/AndroidRuntime(10494): Caused by: android.database.sqlite.SQLiteException: no such table: tblLogicTest: , while compiling: SELECT * FROM tblLogicTest WHERE 1 = 1 ORDER BY _ID ASC
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:49)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at rs.androidaplikacije.themostcompleteiqtest.TestAdapter.getTestDataLogic(TestAdapter.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at rs.androidaplikacije.themostcompleteiqtest.LogicTest.nextQuestion(LogicTest.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at rs.androidaplikacije.themostcompleteiqtest.LogicTest.onCreate(LogicTest.java:93)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.)
04-17 20:01:10.527: E/AndroidRuntime(10494): at android.app.ActivityThread.performLaunchActivity(ActivityThread.)
04-17 20:01:10.527: E/AndroidRuntime(10494): ... 11 more
数据库助手：
public class DataBaseHelper extends SQLiteOpenHelper
{
private static String TAG = "DataBaseHelper"; // Tag just for the LogCat window
//destination path (location) of our database on device
private static String DB_PATH = "/data/data/rs.androidaplikacije.themostcompleteiqtest/databases/";
private static String DB_NAME ="pitanja.sqlite";// Database name
private static SQLiteDatabase mDataBase;
private final Context mContext;
private static final int DATABASE_VERSION = 3;
public DataBaseHelper(Context mojContext)
{
super(mojContext, DB_NAME, null, 3);// 1 it's Database Version
DB_PATH = mojContext.getApplicationInfo().dataDir + "/databases/";
this.mContext = mojContext;
}
public void createDataBase() throws IOException
{
//If database not exists copy it from the assets
this.getReadableDatabase();
this.close();
try
{
//Copy the database from assests
copyDataBase();
Log.e(TAG, "createDatabase database created");
}
catch (IOException mIOException)
{
throw new Error("ErrorCopyingDataBase");
}
}
/**
* Check if the database already exist to avoid re-copying the file each time you open the application.
* @return true if it exists, false if it doesn't
*/
public boolean checkDataBase(){
SQLiteDatabase checkDB = null;
try{
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
}catch(SQLiteException e){
//database does't exist yet.
}
if(checkDB != null){
checkDB.close();
}
return checkDB != null ? true : false;
}
/*Check that the database exists here: /data/data/your package/databases/Da Name
private boolean checkDataBase()
{
File dbFile = new File(DB_PATH + DB_NAME);
//Log.v("dbFile", dbFile + " "+ dbFile.exists());
return dbFile.exists();
}
*/
//Copy the database from assets
private void copyDataBase() throws IOException
{
InputStream mInput = mContext.getAssets().open(DB_NAME);
String outFileName = DB_PATH + DB_NAME;
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();
}
//Open the database, so we can query it
public boolean openDataBase() throws SQLException
{
String mPath = DB_PATH + DB_NAME;
//Log.v("mPath", mPath);
mDataBase = SQLiteDatabase.openDatabase(mPath, null, SQLiteDatabase.CREATE_IF_NECESSARY);
//mDataBase = SQLiteDatabase.openDatabase(mPath, null, SQLiteDatabase.NO_LOCALIZED_COLLATORS);
return mDataBase != null;
}
@Override
public void close()
{
if(mDataBase != null)
mDataBase.close();
super.close();
}
@Override
public void onCreate(SQLiteDatabase arg0) {
}
@Override
public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {
try {
// delete existing?
// Copy the db from assests
copyDataBase();
Log.e(TAG, "database updated");
} catch (IOException mIOException) {
Log.e(TAG, mIOException.toString());
try {
throw mIOException;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
适配器：
public class TestAdapter
{
protected static final String TAG = "DataAdapter";
private final Context mContext;
private SQLiteDatabase mDb;
private DataBaseHelper mDbHelper;
public TestAdapter(Context context)
{
this.mContext = context;
mDbHelper = new DataBaseHelper(mContext);
}
public TestAdapter createDatabase() throws SQLException
{
try
{
mDbHelper.createDataBase();
}
catch (IOException mIOException)
{
Log.e(TAG, mIOException.toString() + " UnableToCreateDatabase");
throw new Error("UnableToCreateDatabase");
}
return this;
}
public TestAdapter open() throws SQLException
{
try
{
mDbHelper.openDataBase();
mDbHelper.close();
mDb = mDbHelper.getReadableDatabase();
}
catch (SQLException mSQLException)
{
Log.e(TAG, "open >>"+ mSQLException.toString());
throw mSQLException;
}
return this;
}
public void close()
{
mDbHelper.close();
}
public Cursor getTestDataMDPI(String whereClause)
{;
try
{
String sql ="SELECT * FROM tblPitanjaDanskaMDPI WHERE 1 = 1 " + whereClause + " ORDER BY _ID ASC";
Cursor mCur = mDb.rawQuery(sql, null);
if (mCur!=null)
{
mCur.moveToNext();
}
return mCur;
}
catch (SQLException mSQLException)
{
Log.e(TAG, "getTestData >>"+ mSQLException.toString());
throw mSQLException;
}
}
public Cursor getTestDataHDPI(String whereClause)
{;
try
{
String sql ="SELECT * FROM tblPitanjaDanskaHDPI WHERE 1 = 1 " + whereClause + " ORDER BY _ID ASC";
Cursor mCur = mDb.rawQuery(sql, null);
if (mCur!=null)
{
mCur.moveToNext();
}
return mCur;
}
catch (SQLException mSQLException)
{
Log.e(TAG, "getTestData >>"+ mSQLException.toString());
throw mSQLException;
}
}
public Cursor getTestDataLogic(String whereClause)
{;
try
{
String sql ="SELECT * FROM tblLogicTest WHERE 1 = 1 " + whereClause + " ORDER BY _ID ASC";
Cursor mCur = mDb.rawQuery(sql, null);
if (mCur!=null)
{
mCur.moveToNext();
}
return mCur;
}
catch (SQLException mSQLException)
{
Log.e(TAG, "getTestData >>"+ mSQLException.toString());
throw mSQLException;
}
}
}
答案 0 :(得分：0)
除非您增加数据库版本，否则不会调用onUpgrade方法。