在我的应用程序数据库,我通过复制了已储存在我的资产文件夹中现有的SQLite数据库的数据库。安卓果冻豆:损坏的升级
在代码我还检查数据库的版本,因此,如果应用程序的较新版本安装有更高数据库版本,则数据库重新创建(在onUpgrade方法)。
我遇到的问题是,升级过程完全运作以往的Android版本,但由于安装果冻豆,我已经越来越数据库已损坏的错误。如果我清理安装应用程序(因此不需要升级数据库,只需创建),那么应用程序也可以正常运行。
我测试了这两个设备是用4.1.1 S3,和一个的Nexus 4与4.2.1。
任何想法,为什么它会启动失败上最新的Android版本?谢谢!
的错误如下:
01-09 09:59:50.941: E/SQLiteLog(15915): (11) database corruption at line 51776 of [00bb9c9ce4]
01-09 09:59:50.941: E/SQLiteLog(15915): (11) database disk image is malformed
01-09 09:59:50.941: E/DefaultDatabaseErrorHandler(15915): Corruption reported by sqlite on database: /data/data/myapp/databases/services.sqlite
01-09 09:59:50.941: E/DefaultDatabaseErrorHandler(15915): deleting the database file: /data/data/myapp/databases/services.sqlite
01-09 09:59:50.991: E/SQLiteLog(15915): (1) no such table: services
01-09 09:59:50.991: D/AndroidRuntime(15915): Shutting down VM
01-09 09:59:50.991: W/dalvikvm(15915): threadid=1: thread exiting with uncaught exception (group=0x40c3c930)
01-09 09:59:50.991: E/AndroidRuntime(15915): FATAL EXCEPTION: main
01-09 09:59:50.991: E/AndroidRuntime(15915): java.lang.RuntimeException: Unable to start activity ComponentInfo{myapp/myapp.MainActivity}: android.database.sqlite.SQLiteException: no such table: services (code 1): , while compiling: (my query)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.ActivityThread.access$600(ActivityThread.java:141)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.os.Handler.dispatchMessage(Handler.java:99)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.os.Looper.loop(Looper.java:137)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.ActivityThread.main(ActivityThread.java:5039)
01-09 09:59:50.991: E/AndroidRuntime(15915): at java.lang.reflect.Method.invokeNative(Native Method)
01-09 09:59:50.991: E/AndroidRuntime(15915): at java.lang.reflect.Method.invoke(Method.java:511)
01-09 09:59:50.991: E/AndroidRuntime(15915): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-09 09:59:50.991: E/AndroidRuntime(15915): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-09 09:59:50.991: E/AndroidRuntime(15915): at dalvik.system.NativeStart.main(Native Method)
01-09 09:59:50.991: E/AndroidRuntime(15915): Caused by: android.database.sqlite.SQLiteException: no such table: services (code 1): , while compiling: (my query)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1161)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1032)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1200)
01-09 09:59:50.991: E/AndroidRuntime(15915): at myapp.c.f(Unknown Source)
01-09 09:59:50.991: E/AndroidRuntime(15915): at myapp.bk.a(Unknown Source)
01-09 09:59:50.991: E/AndroidRuntime(15915): at myapp.MainActivity.onCreate(Unknown Source)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.Activity.performCreate(Activity.java:5104)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
01-09 09:59:50.991: E/AndroidRuntime(15915): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
01-09 09:59:50.991: E/AndroidRuntime(15915): ... 11 more
代码来创建和升级数据库如下:
public void createDatabase() throws IOException {
boolean dbExist = checkDatabase();
if(dbExist) {
this.getWritableDatabase();
}
dbExist = checkDatabase();
SQLiteDatabase db_Read = null;
if(!dbExist) {
db_Read = this.getReadableDatabase();
try {
copyDatabase();
} catch(IOException e) {
throw new Error ("Error copying database");
}
}
}
private 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;
}
private void copyDatabase() throws IOException {
InputStream myInput = myContext.getAssets().open(DB_NAME);
String outFileName = DB_PATH + DB_NAME;
OutputStream myOutput = new FileOutputStream(outFileName);
byte[] buffer = new byte[1024];
int length;
while((length = myInput.read(buffer))>0) {
myOutput.write(buffer, 0, length);
}
myOutput.flush();
myOutput.close();
myInput.close();
}
public SQLiteDatabase openDatabase() throws SQLException {
String myPath = DB_PATH + DB_NAME;
myDatabase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
return myDatabase;
}
@Override
public synchronized void close() {
if(myDatabase != null) {
myDatabase.close();
}
super.close();
}
@Override
public void onUpgrade (SQLiteDatabase db, int oldVersion, int newVersion) {
sc.updatedDB = true;
if (newVersion > oldVersion) {
try {
copyDatabase();
} catch (IOException e) {
throw new Error("Error upgrading database");
}
}
}
你onUpgrade方法很奇怪。以及您复制数据库文件而不是添加新表和选择/插入数据的事实。 – vorrtex
我不介意在升级时将数据保存在数据库中,我只需要更新结构(表,列),因此我想从资产文件夹中的sqlite数据库复制新结构。 – jay