在我的Android应用程序中，有一个预定义的数据库，位于assets文件夹中。我创建了一个表android_metadata，其中包含一个名为locale的列，并且有一个记录en_US。在我的应用程序中，用户应输入他/她的详细信息并单击保存按钮。单击保存按钮时出现以下错误。
10-21 09:37:06.010: E/SQLiteLog(6278): (11) database corruption at line 50741 of [00bb9c9ce4]
10-21 09:37:06.010: E/SQLiteLog(6278): (11) database corruption at line 50780 of [00bb9c9ce4]
10-21 09:37:06.010: E/SQLiteLog(6278): (11) statement aborts at 16: [SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1]
10-21 09:37:06.160: E/SQLiteDatabase(6278): Failed to open database '/data/data/my.easymedi.controller/databases/EasyMediInfo.db'.
10-21 09:37:06.160: E/SQLiteDatabase(6278): android.database.sqlite.SQLiteException: Failed to change locale for db '/data/data/my.easymedi.controller/databases /EasyMediInfo.db' to 'en_US'.
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnection.setLocaleFromConfiguration(SQLiteConnection.java:386)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:218)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:193)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:804)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:789)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:669)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at my.easymedi.db.DBHelper.openDataBase(DBHelper.java:153)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at my.easymedi.controller.AddNewPerson.onClick(AddNewPerson.java:202)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.view.View.performClick(View.java:4202)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.view.View$PerformClick.run(View.java:17340)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.os.Handler.handleCallback(Handler.java:725)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.os.Handler.dispatchMessage(Handler.java:92)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.os.Looper.loop(Looper.java:137)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.app.ActivityThread.main(ActivityThread.java:5039)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at java.lang.reflect.Method.invokeNative(Native Method)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at java.lang.reflect.Method.invoke(Method.java:511)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at dalvik.system.NativeStart.main(Native Method)
10-21 09:37:06.160: E/SQLiteDatabase(6278): Caused by: android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed (code 11)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnection.nativeExecuteForString(Native Method)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnection.executeForString(SQLiteConnection.java:634)
10-21 09:37:06.160: E/SQLiteDatabase(6278): at android.database.sqlite.SQLiteConnection.setLocaleFromConfiguration(SQLiteConnection.java:367)
10-21 09:37:06.160: E/SQLiteDatabase(6278): ... 22 more
我的DBHelper课程正在关注。
package my.easymedi.db;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import my.easymedi.entity.Person;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import android.widget.Toast;
public class DBHelper extends SQLiteOpenHelper {
private static final String pkg = "my.easymedi.controller";
private static String DB_PATH = "";
private static String DB_NAME = "EasyMediInfo.db";
private static final int DB_VERSION = 1;
private final Context myContext;
private SQLiteDatabase myDatabase;
public DBHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
// this.myContext = context;
if (android.os.Build.VERSION.SDK_INT >= 4.2) {
DB_PATH = context.getApplicationInfo().dataDir + "/databases/";
} else {
DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
}
this.myContext = context;
}
public void createDataBase() {
boolean dbExist = checkDataBase();
System.out.println("==="+dbExist+"===");
if (dbExist) {
// do nothing - database already exist
} else {
this.getReadableDatabase();
this.close();
try {
copyDataBase();
Log.d("CREATE_DB", "createDatabase database created");
} catch (IOException e) {
Toast.makeText(myContext, e.getMessage(), Toast.LENGTH_SHORT)
.show();
Log.d("CREATE_DB", e.getMessage());
}
}
}
private void copyDataBase() throws IOException {
System.out.println("***copy db***");
InputStream databaseInput = null;
/* Path to copy the database */
String outFileName = DB_PATH + DB_NAME;
/* open the empty database as an output stream */
OutputStream databaseOutput = new FileOutputStream(outFileName);
/* open the local database as the input stream */
databaseInput = myContext.getAssets().open(DB_NAME);
/* Transfer byte from byte from input file to output file */
byte[] buffer = new byte[1024];
int length = databaseInput.read(buffer);
while (length > 0) {
databaseOutput.write(buffer, 0, length);
//databaseOutput.flush();
}
databaseOutput.flush();
databaseInput.close();
databaseOutput.close();
}
private boolean checkDataBase() {
File dbFile = new File(DB_PATH + DB_NAME);
return dbFile.exists();
/*SQLiteDatabase checkDB = null;
try {
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.NO_LOCALIZED_COLLATORS);
} catch (SQLiteException e) {
Toast.makeText(myContext, e.getMessage(), Toast.LENGTH_SHORT)
.show();
Log.d("Check_DB", e.getMessage());
}
if (checkDB != null) {
String str = "checked";
System.out.println("====" + str + "====");
checkDB.close();
}
return checkDB != null ? true : false;*/
}
/* Open the database */
public boolean openDataBase() {
String myPath = DB_PATH + DB_NAME;
Toast.makeText(myContext, myPath, Toast.LENGTH_SHORT).show();
myDatabase = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.OPEN_READWRITE);
if (myDatabase != null) {
System.out.println("====database opened====");
} else {
System.out.println("====error opening database====");
}
return myDatabase != null ? true : false;
}
public void closeDatabase() {
if(myDatabase != null){
myDatabase.close();
}
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
public boolean insertIntoDatabase(String table, ContentValues values) {
try {
myDatabase.insert(table, null, values);
Log.d("INSERT", "Information Saved");
return true;
} catch (Exception e) {
// TODO Auto-generated catch block
Log.d("INSERT", e.toString());
return false;
}
}
}
这是我保存按钮的代码段。
case R.id.btnSave:
personName = etName.getText().toString();
date_of_birth = tvDOB.getText().toString();
age = tvAge.getText().toString();
int selected_rb_ID = genderGrp.getCheckedRadioButtonId();
RadioButton rb = (RadioButton) findViewById(selected_rb_ID);
gender = rb.getText().toString();
bloodGrp = spiBloodGrp.getSelectedItem().toString();
Person person = new Person();
person.setName(personName);
person.setDate_of_birth(date_of_birth);
person.setAge(age);
person.setGender(gender);
person.setBloodGrp(bloodGrp);
ContentValues values = new ContentValues();
values.put(COLUMN_PERSON_NAME, person.getName());
values.put(COLUMN_DOB, person.getDate_of_birth());
values.put(COLUMN_AGE, person.getAge());
values.put(COLUMN_GENDER, person.getGender());
values.put(COLUMN_BLOODGRP, person.getBloodGrp());
DBHelper dbHelper = new DBHelper(this);
dbHelper.createDataBase();
dbHelper.openDataBase();
if(dbHelper.insertIntoDatabase("EMPerson", values)){
Toast.makeText(getApplicationContext(), "Data has been saved successfully", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(getApplicationContext(), "Oops ! Try again", Toast.LENGTH_SHORT).show();
}
dbHelper.closeDatabase();
break;
在我的主要活动中，我通过调用此代码段创建了数据库。
final DBHelper helper = new DBHelper(this);
helper.createDataBase();
如果有人能够如此善意地解释这是错误的话，我将非常感激。
提前完成
答案 0 :(得分：21)
您的copyDataBase()函数会从assets文件夹中复制db（EasyMediInfo.db）。似乎数据库是使用与'en_US'不同的语言环境创建的。
编辑
尝试更改：
myDatabase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
要：
myDatabase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.NO_LOCALIZED_COLLATORS | SQLiteDatabase.OPEN_READWRITE);
答案 1 :(得分：1)
当setLocale为zh_CN时，我遇到了同样的错误。 我没有编写新代码直接使用SQLiteDatabase，而是进行了修改 SQLiteOpenHelper：
/**
* A simplified version of SKD's SQLiteOpenHelper(only writable), original doc below
*
* A helper class to manage database creation and version management.
*
* <p>You create a subclass implementing {@link #onCreate}, {@link #onUpgrade} and
* optionally {@link #onOpen}, and this class takes care of opening the database
* if it exists, creating it if it does not, and upgrading it as necessary.
* Transactions are used to make sure the database is always in a sensible state.
*
* <p>This class makes it easy for {@link android.content.ContentProvider}
* implementations to defer opening and upgrading the database until first use,
* to avoid blocking application startup with long-running database upgrades.
*
* <p>For an example, see the NotePadProvider class in the NotePad sample application,
* in the <em>samples/</em> directory of the SDK.</p>
*
* <p class="note"><strong>Note:</strong> this class assumes
* monotonically increasing version numbers for upgrades.</p>
*/
public abstract class SQLiteOpenHelper {
private static final String TAG = SQLiteOpenHelper.class.getSimpleName();
private final Context mContext;
private final String mName;
private final CursorFactory mFactory;
private final int mNewVersion;
private SQLiteDatabase mDatabase;
private boolean mIsInitializing;
private boolean mEnableWriteAheadLogging;
private final DatabaseErrorHandler mErrorHandler;
/**
* Create a helper object to create, open, and/or manage a database.
* This method always returns very quickly. The database is not actually
* created or opened until one of {@link #getWritableDatabase} or
* {@link #getReadableDatabase} is called.
*
* @param context to use to open or create the database
* @param name of the database file, or null for an in-memory database
* @param factory to use for creating cursor objects, or null for the default
* @param version number of the database (starting at 1); if the database is older,
* {@link #onUpgrade} will be used to upgrade the database; if the database is
* newer, {@link #onDowngrade} will be used to downgrade the database
*/
public SQLiteOpenHelper(Context context, String name, CursorFactory factory, int version) {
this(context, name, factory, version, null);
}
/**
* Create a helper object to create, open, and/or manage a database.
* The database is not actually created or opened until one of
* {@link #getWritableDatabase} or {@link #getReadableDatabase} is called.
*
* <p>Accepts input param: a concrete instance of {@link DatabaseErrorHandler} to be
* used to handle corruption when sqlite reports database corruption.</p>
*
* @param context to use to open or create the database
* @param name of the database file, or null for an in-memory database
* @param factory to use for creating cursor objects, or null for the default
* @param version number of the database (starting at 1); if the database is older,
* {@link #onUpgrade} will be used to upgrade the database; if the database is
* newer, {@link #onDowngrade} will be used to downgrade the database
* @param errorHandler the {@link DatabaseErrorHandler} to be used when sqlite reports database
* corruption, or null to use the default error handler.
*/
public SQLiteOpenHelper(Context context, String name, CursorFactory factory, int version,
DatabaseErrorHandler errorHandler) {
if (version < 1) throw new IllegalArgumentException("Version must be >= 1, was " + version);
mContext = context;
mName = name;
mFactory = factory;
mNewVersion = version;
mErrorHandler = errorHandler;
}
/**
* Return the name of the SQLite database being opened, as given to
* the constructor.
*/
public String getDatabaseName() {
return mName;
}
/**
* Enables or disables the use of write-ahead logging for the database.
*
* Write-ahead logging cannot be used with read-only databases so the value of
* this flag is ignored if the database is opened read-only.
*
* @param enabled True if write-ahead logging should be enabled, false if it
* should be disabled.
*
* @see SQLiteDatabase#enableWriteAheadLogging()
*/
public void setWriteAheadLoggingEnabled(boolean enabled) {
synchronized (this) {
if (mEnableWriteAheadLogging != enabled) {
if (mDatabase != null && mDatabase.isOpen() && !mDatabase.isReadOnly()) {
if (enabled) {
mDatabase.enableWriteAheadLogging();
} else {
mDatabase.disableWriteAheadLogging();
}
}
mEnableWriteAheadLogging = enabled;
}
}
}
/**
Simplified getWritableDatabase from SDK source
*/
public SQLiteDatabase getWritableDatabase() {
synchronized (this) {
return getDatabaseLocked();
}
}
private SQLiteDatabase getDatabaseLocked() {
// always get writable database
if (mDatabase != null) {
if (!mDatabase.isOpen()) {
// Darn! The user closed the database by calling mDatabase.close().
mDatabase = null;
} else if (!mDatabase.isReadOnly()) {
// The database is already open for business.
return mDatabase;
}
}
if (mIsInitializing) {
throw new IllegalStateException("getDatabase called recursively");
}
SQLiteDatabase db = mDatabase;
try {
mIsInitializing = true;
if (db == null && mName == null) {
db = SQLiteDatabase.create(null);
} else if (db == null) {
try {
final String path = mContext.getDatabasePath(mName).getPath();
db = SQLiteDatabase.openDatabase(path, mFactory,
(SQLiteDatabase.CREATE_IF_NECESSARY
| SQLiteDatabase.OPEN_READWRITE
| SQLiteDatabase.NO_LOCALIZED_COLLATORS),
mErrorHandler);
} catch (SQLiteException ex) {
throw ex;
}
}
onConfigure(db);
final int version = db.getVersion();
if (version != mNewVersion) {
db.beginTransaction();
try {
if (version == 0) {
onCreate(db);
} else {
if (version > mNewVersion) {
onDowngrade(db, version, mNewVersion);
} else {
onUpgrade(db, version, mNewVersion);
}
}
db.setVersion(mNewVersion);
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
}
onOpen(db);
mDatabase = db;
return db;
} finally {
mIsInitializing = false;
if (db != null && db != mDatabase) {
db.close();
}
}
}
/**
* Close any open database object.
*/
public synchronized void close() {
if (mIsInitializing) throw new IllegalStateException("Closed during initialization");
if (mDatabase != null && mDatabase.isOpen()) {
mDatabase.close();
mDatabase = null;
}
}
/**
* Called when the database connection is being configured, to enable features
* such as write-ahead logging or foreign key support.
* <p>
* This method is called before {@link #onCreate}, {@link #onUpgrade},
* {@link #onDowngrade}, or {@link #onOpen} are called. It should not modify
* the database except to configure the database connection as required.
* </p><p>
* This method should only call methods that configure the parameters of the
* database connection, such as {@link SQLiteDatabase#enableWriteAheadLogging}
* {@link SQLiteDatabase#setForeignKeyConstraintsEnabled},
* {@link SQLiteDatabase#setLocale}, {@link SQLiteDatabase#setMaximumSize},
* or executing PRAGMA statements.
* </p>
*
* @param db The database.
*/
public void onConfigure(SQLiteDatabase db) {}
/**
* Called when the database is created for the first time. This is where the
* creation of tables and the initial population of the tables should happen.
*
* @param db The database.
*/
public abstract void onCreate(SQLiteDatabase db);
/**
* Called when the database needs to be upgraded. The implementation
* should use this method to drop tables, add tables, or do anything else it
* needs to upgrade to the new schema version.
*
* <p>
* The SQLite ALTER TABLE documentation can be found
* <a href="http://sqlite.org/lang_altertable.html">here</a>. If you add new columns
* you can use ALTER TABLE to insert them into a live table. If you rename or remove columns
* you can use ALTER TABLE to rename the old table, then create the new table and then
* populate the new table with the contents of the old table.
* </p><p>
* This method executes within a transaction. If an exception is thrown, all changes
* will automatically be rolled back.
* </p>
*
* @param db The database.
* @param oldVersion The old database version.
* @param newVersion The new database version.
*/
public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion);
/**
* Called when the database needs to be downgraded. This is strictly similar to
* {@link #onUpgrade} method, but is called whenever current version is newer
* than requested one.
* However, this method is not abstract, so it is not mandatory for a customer to
* implement it. If not overridden, default implementation will reject downgrade and
* throws SQLiteException
*
* <p>
* This method executes within a transaction. If an exception is thrown, all changes
* will automatically be rolled back.
* </p>
*
* @param db The database.
* @param oldVersion The old database version.
* @param newVersion The new database version.
*/
public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
throw new SQLiteException("Can't downgrade database from version "
+ oldVersion + " to " + newVersion);
}
/**
* Called when the database has been opened. The implementation
* should check {@link SQLiteDatabase#isReadOnly} before updating the
* database.
* <p>
* This method is called after the database connection has been configured
* and after the database schema has been created, upgraded or downgraded as necessary.
* If the database connection must be configured in some way before the schema
* is created, upgraded, or downgraded, do it in {@link #onConfigure} instead.
* </p>
*
* @param db The database.
*/
public void onOpen(SQLiteDatabase db) {}
}