SQLiteCantOpenDatabaseException：未知错误（代码14）无法打开数据库

Totalys 发表于 Dev

Totalys

尝试获取可读或可写的数据库时出现此错误。“ SQLiteCantOpenDatabaseException：未知错误（代码14）无法打开数据库”我在SQLiteOpenHelper中遇到了这个奇怪的问题，在这里我已经看到了一些类似的答案，但都没有解决我的问题。像我一样绝望的是，我在下面发布我的代码，希望有人能找到我没有看到的东西...

（一个重要信息：我从另一个正在运行的应用程序中获得了该应用程序。但是，在调试时，我仍然没有更改dbname。它与先前应用程序的名称（ks.db）相同。该数据库存在在我的调试设备上，但tr.db没有）

我的DatabaseHelper类是这样的：

//Singleton
private static DatabaseHelper sInstance;

//Log
private static String TAG = "Database";

private static final String NAME_DB = "tr.db";
private static final String PATH_DB_DEBUG = "/mnt/sdcard/";
private static final int VERSION = 4;

//TABLE NAMES
private static final String TABLE_USERS = "users";
private static final String TABLE_TRACKS = "tracks";
private static final String TABLE_ROTAS = "rotas";
...
/**
     *
     * @param context
     * @return Unique instance of DataBaseHelper
     */
    public static synchronized DatabaseHelper getInstance(Context context) {
        if (sInstance == null) {
            sInstance = new DatabaseHelper(context.getApplicationContext());
        }
        return sInstance;
    }

我的Android清单：

...

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> ...

在主要活动中：

    //DB
    DatabaseHelper database;
...
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
...
        //database
        database = DatabaseHelper.getInstance(this.getApplicationContext());
        database.getReadableDatabase(); ( <- Error HERE)

这是完整的错误堆栈：

> 12-13 15:02:43.798    5764-5764/com.snitram.toriders E/SQLiteLog﹕ (14)
> cannot open file at line 31307 of [2ef4f3a5b1] 12-13 15:02:43.798   
> 5764-5764/com.snitram.toriders E/SQLiteLog﹕ (14) os_unix.c:31307: (2)
> open(/storage/emulated/0tr.db) - 12-13 15:02:43.811   
> 5764-5764/com.snitram.toriders E/SQLiteDatabase﹕ Failed to open
> database '/storage/emulated/0tr.db'.
>     android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
>             at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:207)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:191)
>             at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
>             at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:806)
>             at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:791)
>             at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
>             at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:571)
>             at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:269)
>             at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
>             at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:187)
>             at com.snitram.toriders.activities.LoginActivity.onCreate(LoginActivity.java:222)
>             at android.app.Activity.performCreate(Activity.java:6245)
>             at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1130)
>             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
>             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
>             at android.app.ActivityThread.-wrap11(ActivityThread.java)
>             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
>             at android.os.Handler.dispatchMessage(Handler.java:102)
>             at android.os.Looper.loop(Looper.java:148)
>             at android.app.ActivityThread.main(ActivityThread.java:5443)
>             at java.lang.reflect.Method.invoke(Native Method)
>             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
>             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 12-13
> 15:02:43.814    5764-5764/com.snitram.toriders E/SQLiteOpenHelper﹕
> Couldn't open /storage/emulated/0tr.db for writing (will try
> read-only):
>     android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
>             at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:207)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:191)
>             at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
>             at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:806)
>             at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:791)
>             at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
>             at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:571)
>             at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:269)
>             at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
>             at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:187)
>             at com.snitram.toriders.activities.LoginActivity.onCreate(LoginActivity.java:222)
>             at android.app.Activity.performCreate(Activity.java:6245)
>             at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1130)
>             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
>             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
>             at android.app.ActivityThread.-wrap11(ActivityThread.java)
>             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
>             at android.os.Handler.dispatchMessage(Handler.java:102)
>             at android.os.Looper.loop(Looper.java:148)
>             at android.app.ActivityThread.main(ActivityThread.java:5443)
>             at java.lang.reflect.Method.invoke(Native Method)
>             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
>             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 12-13
> 15:02:43.815    5764-5764/com.snitram.toriders E/SQLiteLog﹕ (14)
> cannot open file at line 31307 of [2ef4f3a5b1] 12-13 15:02:43.815   
> 5764-5764/com.snitram.toriders E/SQLiteLog﹕ (14) os_unix.c:31307: (2)
> open(/storage/emulated/0tr.db) - 12-13 15:02:43.816   
> 5764-5764/com.snitram.toriders E/SQLiteDatabase﹕ Failed to open
> database '/storage/emulated/0tr.db'.
>     android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
>             at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:207)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:191)
>             at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
>             at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:806)
>             at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:791)
>             at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
>             at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:234)
>             at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:187)
>             at com.snitram.toriders.activities.LoginActivity.onCreate(LoginActivity.java:222)
>             at android.app.Activity.performCreate(Activity.java:6245)
>             at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1130)
>             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
>             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
>             at android.app.ActivityThread.-wrap11(ActivityThread.java)
>             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
>             at android.os.Handler.dispatchMessage(Handler.java:102)
>             at android.os.Looper.loop(Looper.java:148)
>             at android.app.ActivityThread.main(ActivityThread.java:5443)
>             at java.lang.reflect.Method.invoke(Native Method)
>             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
>             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 12-13
> 15:02:43.816    5764-5764/com.snitram.toriders D/AndroidRuntime﹕
> Shutting down VM 12-13 15:02:43.817    5764-5764/com.snitram.toriders
> E/AndroidRuntime﹕ FATAL EXCEPTION: main
>     Process: com.snitram.toriders, PID: 5764
>     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.snitram.toriders/com.snitram.toriders.activities.LoginActivity}:
> android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error
> (code 14): Could not open database
>             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2426)
>             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
>             at android.app.ActivityThread.-wrap11(ActivityThread.java)
>             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
>             at android.os.Handler.dispatchMessage(Handler.java:102)
>             at android.os.Looper.loop(Looper.java:148)
>             at android.app.ActivityThread.main(ActivityThread.java:5443)
>             at java.lang.reflect.Method.invoke(Native Method)
>             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
>             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
>      Caused by: android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error
> (code 14): Could not open database
>             at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:207)
>             at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:191)
>             at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
>             at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
>             at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:806)
>             at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:791)
>             at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
>             at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:234)
>             at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:187)
>             at com.snitram.toriders.activities.LoginActivity.onCreate(LoginActivity.java:222)
>             at android.app.Activity.performCreate(Activity.java:6245)
>             at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1130)
>             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
>             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
>             at android.app.ActivityThread.-wrap11(ActivityThread.java)
>             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
>             at android.os.Handler.dispatchMessage(Handler.java:102)
>             at android.os.Looper.loop(Looper.java:148)
>             at android.app.ActivityThread.main(ActivityThread.java:5443)
>             at java.lang.reflect.Method.invoke(Native Method)
>             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
>             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)