我正在多个异步调用中读/写我的SQLite数据库，但是尝试按照建议here这样做。这一切在正常操作中都能正常工作。但是，如果我将方向翻转为横向和背面，则在我的getWritableDatabase中尝试onCreate时会出现以下错误。
09-21 06:52:49.835 E: (5) database is locked
09-21 06:52:49.840 E: Failed to open database '/data/user/0/com.pipperpublishing.soccerrefpro/databases/Games.db'.
android.database.sqlite.SQLiteDatabaseLockedException: database is locked (code 5): , while compiling: PRAGMA journal_mode
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Error Code : 5 (SQLITE_BUSY)
Caused By : The database file is locked.
(database is locked (code 5): , while compiling: PRAGMA journal_mode)
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at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1005)
at android.database.sqlite.SQLiteConnection.executeForString(SQLiteConnection.java:709)
at android.database.sqlite.SQLiteConnection.setJournalMode(SQLiteConnection.java:386)
at android.database.sqlite.SQLiteConnection.setWalModeFromConfiguration(SQLiteConnection.java:360)
at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:252)
at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:203)
at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:514)
at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:206)
at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:178)
at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:1063)
at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:1018)
at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:824)
at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:681)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
at com.pipperpublishing.refwatch.RefWatch.onCreate(RefWatch.java:548)
at android.app.Activity.performCreate(Activity.java:6912)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2900)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3008)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4974)
at android.app.ActivityThread.-wrap21(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1656)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6688)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
据推测，我的一些异步线程仍然保持着数据库连接。我尝试在重新打开之前关闭数据库，但这没有用。
异步调用完成并不重要（实际上我抓住了导致的异常），但我想避免应用程序崩溃。
如果没有干净的数据库管理，我可以在onStop（）中杀死所有剩余的异步线程。
建议欢迎。