Question

我在数据库中执行一个简单的插入查询但我得到了标题中所示的例外情况求你帮帮我。

代码如下。

public void insertAutoAlbumDetails（String setId，String albumid， String Type，String albumName）{

    String query = "INSERT INTO "
            + ALBUM_DETAILS
            + "("
            + ALBUM_ID
            + ","
            + ALBUM_NAME
            + ","
            + ALBUM_TYPE
            + ","
            + USER_ID
            + ","
            + ALBUM_SETID
            + ") SELECT \""
            + albumid
            + "\",\""
            + albumName
            + "\",\""
            + Type
            + "\",\""
            + AppPreferences.getAppPreferences(context).getString(
                    AppConstants.USER_ID, "")
            + "\",\""
            + setId
            + "\" WHERE NOT EXISTS "
            + "("
            + "SELECT 1 FROM "
            + ALBUM_DETAILS
            + " WHERE "
            + ALBUM_ID
            + "=\""
            + albumid
            + "\" AND "
            + USER_ID
            + "=\""
            + AppPreferences.getAppPreferences(context).getString(
                    AppConstants.USER_ID, "") + "\")";

    this.Query(query);//// i get exception on this line.
}

获得以下异常......

02-11 18:11:35.370: W/System.err(26820): java.lang.IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase: /data/data/com.app.quirl/databases/canvera.sqlite
02-11 18:11:35.370: W/System.err(26820):    at android.database.sqlite.SQLiteClosable.acquireReference(SQLiteClosable.java:55)
02-11 18:11:35.370: W/System.err(26820):    at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1648)
02-11 18:11:35.370: W/System.err(26820):    at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1594)
02-11 18:11:35.370: W/System.err(26820):    at com.app.quirl.db.GetDB.Query(GetDB.java:50)
02-11 18:11:35.370: W/System.err(26820):    at com.app.quirl.db.AlbumDetailsDao.insertAutoAlbumDetails(AlbumDetailsDao.java:119)
02-11 18:11:35.370: W/System.err(26820):    at com.app.quirl.GetAutoCountService.uploadImages(GetAutoCountService.java:108)
02-11 18:11:35.370: W/System.err(26820):    at com.app.quirl.GetAutoCountService.access$0(GetAutoCountService.java:62)
02-11 18:11:35.370: W/System.err(26820):    at com.app.quirl.GetAutoCountService$startUploadImage.doInBackground(GetAutoCountService.java:56)
02-11 18:11:35.370: W/System.err(26820):    at com.app.quirl.GetAutoCountService$startUploadImage.doInBackground(GetAutoCountService.java:1)
02-11 18:11:35.370: W/System.err(26820):    at android.os.AsyncTask$2.call(AsyncTask.java:287)    
02-11 18:11:35.370: W/System.err(26820):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
02-11 18:11:35.370: W/System.err(26820):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
02-11 18:11:35.370: W/System.err(26820):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
02-11 18:11:35.370: W/System.err(26820):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-11 18:11:35.370: W/System.err(26820):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-11 18:11:35.370: W/System.err(26820):    at java.lang.Thread.run(Thread.java:856)

Answer 1

异常说：您正在尝试使用已关闭的连接来插入该值。在插入之前确保连接对数据库是开放的。

Answer 2

我的问题最终出现在onCreate()，我在执行db.close()后呼叫db.execSQL(TABLE_CREATE)。

在onCreate之后会自动调用

dbHelper.getReadableDatabase()。

这导致它崩溃，因为它用一个已经关闭的对象从数据库中检索所有值。我从db.close()删除onCreate后，一切正常。

您可能会拨打dbHelper.getReadableDatabase()，但这有用吗？

java.lang.illegalstateexception尝试重新打开已经关闭的对象sqlitequery prblem

2 个答案: