问题描述
我正在开发一个以ORMLite作为数据库的Android应用程序。我想使用SQL查询找到两个字符串之间的Levenshtien距离。我们可以通过加载sqlite的spellfix扩展并调用editdist3函数来实现此目的。 我们可以在ORMLite中实现加载扩展吗？如何在ORMLite中加载拼写扩展名？我是ORMLite的新手
我在做
final String SQL_LOAD_EXTENSION = "SELECT load_extension('./libspellfix3');";
db.rawQuery(SQL_LOAD_EXTENSION,null);
我在JNI文件夹中添加了spellfix库。
我遇到错误
2020-09-09 17:07:50.640 23170-23170/com.example.sqliteextension E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.sqliteextension,PID: 23170
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sqliteextension/com.example.sqliteextension.MainActivity}: android.database.sqlite.SQLiteException: no such function: load_extension (code 1 SQLITE_ERROR):,while compiling: SELECT load_extension('./libspellfix3');
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3308)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3457)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2044)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7560)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: android.database.sqlite.SQLiteException: no such function: load_extension (code 1 SQLITE_ERROR):,while compiling: SELECT load_extension('./libspellfix3');
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:986)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:593)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:590)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:61)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:46)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1443)
at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1382)
at com.example.sqliteextension.WordsDBHelper.onCreate(WordsDBHelper.java:42)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:412)
at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:341)
at com.example.sqliteextension.WordsDBHelper.getEditDistance(WordsDBHelper.java:68)
at com.example.sqliteextension.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:7894)
at android.app.Activity.performCreate(Activity.java:7881)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3283)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3457)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2044)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7560)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
内置的Android SQLITE不支持load_extension（）函数吗？
解决方法
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