SQLiteOpenHelper关闭（）从未明确调用

我有两个活动在我的应用程序访问数据库。无论何时我改变移动设备的方向，我都会在logcat中发现以下错误，尽管程序确实有效。我从错误中了解到，我必须调用close()并关闭数据库和游标。但我在哪里准确地说。

会关闭活动的onDestroy()中的数据库和游标，解决问题吗？

Database pm; 
     Cursor c; 

    @Override 
     public void onDestroy() { 
      pm.close(); 
      c.close(); 
      // Any other cursors that are used... 

      super.onDestroy(); 
    }

这里是logcat的跟踪柜面需要...

02-16 22:37:50.419: E/Database(602): close() was never explicitly called on database 'portfolio' 
02-16 22:37:50.419: E/Database(602): android.database.sqlite.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here 
02-16 22:37:50.419: E/Database(602): at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1849) 
02-16 22:37:50.419: E/Database(602): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:822) 
02-16 22:37:50.419: E/Database(602): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:856) 
02-16 22:37:50.419: E/Database(602): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:849) 
02-16 22:37:50.419: E/Database(602): at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:553) 
02-16 22:37:50.419: E/Database(602): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:203) 
02-16 22:37:50.419: E/Database(602): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:118) 
02-16 22:37:50.419: E/Database(602): at com.xx.xxx.Database.<init>(Database.java:21) 
02-16 22:37:50.419: E/Database(602): at com.xx.xxx.Brokerage_Settings.onCreate(Brokerage_Settings.java:118) 
02-16 22:37:50.419: E/Database(602): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
02-16 22:37:50.419: E/Database(602): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 
02-16 22:37:50.419: E/Database(602): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 
02-16 22:37:50.419: E/Database(602): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
02-16 22:37:50.419: E/Database(602): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 
02-16 22:37:50.419: E/Database(602): at android.os.Handler.dispatchMessage(Handler.java:99) 
02-16 22:37:50.419: E/Database(602): at android.os.Looper.loop(Looper.java:130) 
02-16 22:37:50.419: E/Database(602): at android.app.ActivityThread.main(ActivityThread.java:3687) 
02-16 22:37:50.419: E/Database(602): at java.lang.reflect.Method.invokeNative(Native Method) 
02-16 22:37:50.419: E/Database(602): at java.lang.reflect.Method.invoke(Method.java:507) 
02-16 22:37:50.419: E/Database(602): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:878) 
02-16 22:37:50.419: E/Database(602): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636) 
02-16 22:37:50.419: E/Database(602): at dalvik.system.NativeStart.main(Native Method)

什么是关闭数据库和光标对象的最佳实践？

来源

2013-02-16 Vamsi Challa

你会得到什么错误？ – 2013-02-16 17:21:14

用logcat跟踪更新了问题。 – 2013-02-16 17:21:49

@VamsiChalla onPause（）是更好的地方。 – 2013-02-16 17:36:28