Android源码中的低级错误

我这里要说的是MediaScanner.java,代码连接http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob_plain;f=media/java/android/media/MediaScanner.java;hb=HEAD

请看pruneDeadThumbnailFiles()这个函数

Cursor c = mMediaProvider.query(                    mThumbsUri,                    new String [] { "_data" },                    null,                    null,                    null);            Log.v(TAG, "pruneDeadThumbnailFiles... " + c);            if (c != null && c.moveToFirst()) {                do {                    String fullPathString = c.getString(0);                    existingFiles.remove(fullPathString);                } while (c.moveToNext());            }            for (String fileToDelete : existingFiles) {                if (Config.LOGV)                    Log.v(TAG, "fileToDelete is " + fileToDelete);                try {                    (new File(fileToDelete)).delete();                } catch (SecurityException ex) {                }            }            Log.v(TAG, "/pruneDeadThumbnailFiles... " + c);            if (c != null) {                c.close();            }

?难道写这个函数的工程师不知道要把数据库游标的关闭放在finally里面吗？导致了这样的问题：

01-06 00:19:22.949: ERROR/StrictMode(514): Releasing statement in a finalizer. Please ensure that you explicitly call close() on your cursor: SELECT _id, date_modified, _data FROM video WHERE (mime_type != 'video/avi'  AND mime_type != 'video01-06 00:19:22.949: ERROR/StrictMode(514): android.database.sqlite.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here01-06 00:19:22.949: ERROR/StrictMode(514):     at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:63)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:49)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1356)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:330)01-06 00:19:22.949: ERROR/StrictMode(514):     at com.android.providers.media.MediaProvider.query(MediaProvider.java:1607)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.content.ContentProvider$Transport.bulkQuery(ContentProvider.java:174)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:111)01-06 00:19:22.949: ERROR/StrictMode(514):     at android.os.Binder.execTransact(Binder.java:320)01-06 00:19:22.949: ERROR/StrictMode(514):     at dalvik.system.NativeStart.run(Native Method)