SQLite抛出错误“未关闭游标及数据库对象”特殊原因一例

sszxf

Android 2.3.3
Eclipse Version: 3.7.0
LogCat
　　LogCat 报错信息：

02-13 13:29:32.830: WARN/ActivityManager(62): Launch timeout has expired, giving up wake lock!  
02-13 13:29:33.381: DEBUG/dalvikvm(17173): GC_CONCURRENT freed 771K, 57% free 2908K/6727K, external 2013K/2137K, paused 7ms+5ms  
02-13 13:29:33.630: DEBUG/dalvikvm(17173): GC_FOR_MALLOC freed 867K, 58% free 2836K/6727K, external 2013K/2137K, paused 178ms  
02-13 13:29:33.859: ERROR/Database(17173): close() was never explicitly called on database '/data/data/com.tmall.nokia/databases/taobaoNokia.db'
02-13 13:29:33.859: ERROR/Database(17173): android.database.sqlite.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here
02-13 13:29:33.859: ERROR/Database(17173): at android.database.sqlite.SQLiteDatabase.(SQLiteDatabase.java:1847)
02-13 13:29:33.859: ERROR/Database(17173): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:820)
02-13 13:29:33.859: ERROR/Database(17173): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:854)
02-13 13:29:33.859: ERROR/Database(17173): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:847)
02-13 13:29:33.859: ERROR/Database(17173): at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:544)
02-13 13:29:33.859: ERROR/Database(17173): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:203)
02-13 13:29:33.859: ERROR/Database(17173): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:118)
02-13 13:29:33.859: ERROR/Database(17173): at com.tmall.nokia.db.RecordDBHelper.query(RecordDBHelper.java:49)
02-13 13:29:33.859: ERROR/Database(17173): at com.tmall.nokia.manage.RecordDBopt.get(RecordDBopt.java:78)
02-13 13:29:33.859: ERROR/Database(17173): at com.tmall.nokia.manage.RecordMessage.sendMseeage(RecordMessage.java:111)
02-13 13:29:33.859: ERROR/Database(17173): at com.tmall.nokia.manage.RecordMessage.sendMseeage(RecordMessage.java:87)
02-13 13:29:33.859: ERROR/Database(17173): at com.tmall.nokia.Report.run(Report.java:49)
02-13 13:29:33.859: ERROR/Database(17173): at java.lang.Thread.run(Thread.java:1019)
02-13 13:29:33.830: WARN/ActivityManager(62): Launch timeout has expired, giving up wake lock!
02-13 13:29:34.381: DEBUG/dalvikvm(17173): GC_CONCURRENT freed 771K, 57% free 2908K/6727K, external 2013K/2137K, paused 7ms+5ms
02-13 13:29:34.630: DEBUG/dalvikvm(17173): GC_FOR_MALLOC freed 867K, 58% free 2836K/6727K, external 2013K/2137K, paused 178ms
　　发生错误原因分析：
　　主要错误：

02-13 13:29:33.859: ERROR/Database(17173): android.database.sqlite.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here

　　出错处代码

SQLiteDatabase db = getWritableDatabase();
　　意思是指在此处打开数据库操作之前，应用程序没有关闭游标或数据库对象。
　　在应用中，对数据库操作完成后，应该对游标及数据库进行关闭操作

if (!cur.isClosed()) {
cur.close();
}
db.close();

　　检查操作数据库的相关源代码，确认在退出前关闭了游标及数据库对象。
那还抛出未关闭的错误是怎么回事呢？继续检查发现，抛出此错误之前，在操作数据库过程中还抛出了另外的一个错误。
　　原来在抛出第一个错误以后，关闭操作未执行，导致再次操作数据库时抛出“应用程序没有关闭游标或数据库对象”的错误。
　　解决办法：
　　检查数据库操作部分代码，在抛出错误处理部分，关闭游标及数据库对象（cursor or database object）