对于这个应用程序，我有一个使用受密码保护的 sqlcipher 的数据库。
我有一个活动允许我使用以下代码更改密码：
SQLiteDatabase database = SQLiteDatabase.openDatabase(getDatabasePath("db").getPath() , oldPass, null,0) ;
database.rawExecSQL("PRAGMA rekey = '"+newPass+"';");
database.close();
执行前一段代码后，应用程序恢复正常操作，同时尝试再次访问数据库，我得到：
10-21 16:40:28.961 26635-26635/com.example E/Database: CREATE TABLE android_metadata failed
10-21 16:40:28.981 26635-26635/com.example E/Database: Failed to setLocale() when constructing, closing the database
net.sqlcipher.database.SQLiteException: file is encrypted or is not a database
at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2101)
at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:1967)
at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:900)
at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:943)
at net.sqlcipher.database.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:107)
其次是：
Caused by: net.sqlcipher.database.SQLiteException: file is encrypted or is not a database
at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2101)
at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:1967)
at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:900)
at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:943)
at net.sqlcipher.database.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:107)
有人对这里发生的事情有任何提示或想法吗？我可能正在更改密码错误，或者其他什么。
我真的很感激任何帮助。
编辑 1：修改通行证并尝试再次打开数据库文件的执行日志：
10-21 23:22:46.915 17043-17043/com.example D/testapp: Finalizing DB Facade Object
10-21 23:22:46.945 17043-17043/com.example D/testapp: saveDBPasswordSettings - oldPass: ##
10-21 23:22:46.945 17043-17043/com.example D/testapp: saveDBPasswordSettings - newPass: #newpass#
10-21 23:22:46.945 17043-17043/com.example D/testapp: saveDBPasswordSettings - 0
10-21 23:22:47.025 1462-1788/? E/ENSWrapper: return OMX_ErrorNotImplemented - GetExtensionIndex OMX.ST.AFM.pcmprocessing.transducer_equalizer h=0x003a8180 cParameterName=STE.ADM IndexType=unknown OMX_INDEXTYPE [ 0x00000002 ]
10-21 23:22:47.095 17043-17043/com.example D/testapp: saveDBPasswordSettings - 1
10-21 23:22:47.105 17043-17043/com.example D/testapp: saveDBPasswordSettings - 2
10-21 23:22:47.105 17043-17043/com.example D/testapp: saveDBPasswordSettings - 3
10-21 23:22:47.115 17043-17043/com.example D/testapp: saveDBPasswordSettings - 4
10-21 23:22:47.115 17043-17043/com.example D/testapp: saveDBPasswordSettings - 5
10-21 23:22:47.125 17043-17043/com.example D/testapp: saveDBPasswordSettings - 6
10-21 23:22:47.145 17043-17043/com.example D/testapp: setCacheDbPassword - Called with : newpass
10-21 23:22:47.205 17043-17043/com.example D/testapp: setDbencriptionAskonstart - Called with : false
10-21 23:22:47.225 17043-17043/com.example D/testapp: Finalizing DB Facade Object
10-21 23:22:47.235 17043-17043/com.example D/dalvikvm: Trying to load lib /data/data/com.example/lib/libstlport_shared.so 0x4110ff20
10-21 23:22:47.235 17043-17043/com.example D/dalvikvm: Shared lib '/data/data/com.example/lib/libstlport_shared.so' already loaded in same CL 0x4110ff20
10-21 23:22:47.235 17043-17043/com.example D/dalvikvm: Trying to load lib /data/data/com.example/lib/libsqlcipher_android.so 0x4110ff20
10-21 23:22:47.235 17043-17043/com.example D/dalvikvm: Shared lib '/data/data/com.example/lib/libsqlcipher_android.so' already loaded in same CL 0x4110ff20
10-21 23:22:47.235 17043-17043/com.example D/dalvikvm: Trying to load lib /data/data/com.example/lib/libdatabase_sqlcipher.so 0x4110ff20
10-21 23:22:47.235 17043-17043/com.example D/dalvikvm: Shared lib '/data/data/com.example/lib/libdatabase_sqlcipher.so' already loaded in same CL 0x4110ff20
10-21 23:22:47.235 17043-17043/com.example D/testapp: USING PASSWORD : newpass
10-21 23:22:47.325 1462-1788/? D/ADM: devset:588 STATUS API LEAVE: Opened new device 'Speaker', handle = 101
10-21 23:22:47.405 17043-17043/com.example I/Database: sqlite returned: error code = 26, msg = file is encrypted or is not a database
10-21 23:22:47.405 17043-17043/com.example E/Database: CREATE TABLE android_metadata failed
10-21 23:22:47.515 17043-17043/com.example E/Database: Failed to setLocale() when constructing, closing the database
net.sqlcipher.database.SQLiteException: file is encrypted or is not a database
at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2101)
at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:1967)
at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:900)
at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:943)
at net.sqlcipher.database.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:107)
at com.example.db.TestDataSource.open(TestDataSource.java:45)
at com.example.db.DBFacade.init(DBFacade.java:91)
at com.example.ui.config.DBPasswordActivity.saveDBPasswordSettings(DBPasswordActivity.java:118)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at android.view.View$1.onClick(View.java:3098)
at android.view.View.performClick(View.java:3574)
at android.view.View$PerformClick.run(View.java:14293)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4448)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
at dalvik.system.NativeStart.main(Native Method)
10-21 23:22:47.525 17043-17043/com.example D/AndroidRuntime: Shutting down VM
10-21 23:22:47.525 17043-17043/com.example W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x40aac210)
10-21 23:22:47.626 17043-17043/com.example E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:3103)
at android.view.View.performClick(View.java:3574)
at android.view.View$PerformClick.run(View.java:14293)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4448)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at android.view.View$1.onClick(View.java:3098)
... 11 more
Caused by: net.sqlcipher.database.SQLiteException: file is encrypted or is not a database
at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2101)
at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:1967)
at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:900)
at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:943)
at net.sqlcipher.database.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:107)
at com.example.db.TestDataSource.open(TestDataSource.java:45)
at com.example.db.DBFacade.init(DBFacade.java:91)
at com.example.ui.config.DBPasswordActivity.saveDBPasswordSettings(DBPasswordActivity.java:118)
... 14 more
10-21 23:22:47.656 1439-1720/? D/SurfaceFlinger: screenshot: sw=120, sh=180, minZ=0, maxZ=21035
10-21 23:22:47.656 1862-1299/? W/ActivityManager: Force finishing activity com.example/.ui.config.DBPasswordActivity
10-21 23:22:47.896 1439-1720/? I/libblt_hw: Library opened (handle = 4, fd = 32)
10-21 23:22:48.196 1862-1896/? W/ActivityManager: Activity pause timeout for ActivityRecord{414ad5f8 com.example/.ui.config.DBPasswordActivity}
10-21 23:22:50.398 1462-1789/? D/ADM: devset:282 STATUS Close device 'Speaker'
10-21 23:22:57.695 1862-1896/? W/ActivityManager: Launch timeout has expired, giving up wake lock!
10-21 23:22:58.206 1862-1896/? W/ActivityManager: Activity idle timeout for ActivityRecord{4111e850 com.example/.TestApp}
10-21 23:23:03.791 1462-1788/? D/ADM: devset:414 STATUS Open device 'Speaker', 44100 Hz, format=2, 3 x 6144 bytes bufs
10-21 23:23:03.801 17043-17043/com.example I/Process: Sending signal. PID: 17043 SIG: 9
10-21 23:23:03.811 1862-18347/? I/ActivityManager: Process com.example (pid 17043) has died.
10-21 23:23:03.821 1862-2211/? I/WindowManager: WIN DEATH: Window{41609620 com.example/com.example.ui.config.DBPasswordActivity paused=false}
10-21 23:23:03.831 1439-1892/? I/libblt_hw: Library closed (handle = 0, fd = 11)
10-21 23:23:03.831 1862-2816/? I/WindowManager: WIN DEATH: Window{4158a788 com.example/com.example.TestApp paused=false}
10-21 23:23:03.841 1862-18347/? W/ActivityManager: Force removing ActivityRecord{4111e850 com.example/.TestApp}: app died, no saved state
10-21 23:23:03.952 1439-1720/? I/libblt_hw: Library opened (handle = 0, fd = 11)
10-21 23:23:03.982 1462-1788/? E/ENSWrapper: return OMX_ErrorNotImplemented - GetExtensionIndex OMX.ST.AFM.pcmprocessing.transducer_equalizer h=0x0027f8e8 cParameterName=STE.ADM IndexType=unknown OMX_INDEXTYPE [ 0x00000002 ]
10-21 23:23:04.012 1862-2210/? W/InputManagerService: Got RemoteException sending setActive(false) notification to pid 17043 uid 10155
10-21 23:23:04.082 1439-1720/? I/libblt_hw: Library closed (handle = 4, fd = 32)
10-21 23:23:04.172 1462-1788/? D/ADM: devset:588 STATUS API LEAVE: Opened new device 'Speaker', handle = 101
10-21 23:23:07.295 1462-1789/? D/ADM: devset:282 STATUS Close device 'Speaker'
编辑2：
database.rawExecSQL("BEGIN IMMEDIATE TRANSACTION;");
database.rawExecSQL("PRAGMA rekey = '"+newPass+"';");
database.close();
其次是
getWritableDatabase(newPass);
失败：
10-24 11:47:44.652 1204-1204/com.example D/example: USING PASSWORD : aaa
10-24 11:47:44.952 1204-1204/com.example I/Database: sqlite returned: error code = 26, msg = file is encrypted or is not a database
10-24 11:47:44.952 1204-1204/com.example E/Database: CREATE TABLE android_metadata failed
10-24 11:47:44.972 1204-1204/com.example E/Database: Failed to setLocale() when constructing, closing the database
net.sqlcipher.database.SQLiteException: file is encrypted or is not a database
at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2101)
at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:1967)
at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:900)
at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:943)
at net.sqlcipher.database.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:107)
Edit3 - 解决方案：
DB 文件在安装时使用空字符串加密。
10-21 23:22:46.945 17043-17043/com.example D/testapp: saveDBPasswordSettings - oldPass: ##
10-21 23:22:46.945 17043-17043/com.example D/testapp: saveDBPasswordSettings - newPass: #newpass#