我正在测试Android 4.0+上的应用程序,它效果很好。在2.2/2.3上,我一直有SQLlite
游标问题。奇怪的是,如果这发生像应用程序启动时的90%。我无法解释为什么它有时会起作用。不关闭游标 - 仅在Android 4.0之前?
下面是部分LogCat
:
05-01 20:02:30.341: E/Cursor(369): Finalizing a Cursor that has not been deactivated or closed. database = /data/data/com.---.---/databases/cats.db, table = trending_watching, query = SELECT _id, item_id, item, review, review_id, cat, user, url FROM trending_watching
05-01 20:02:30.341: E/Cursor(369): android.database.sqlite.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here
这里是哪里的问题发生:
在闪屏,我抢从MySQL值,并把他们在两个不同的SQLlite表。我可以验证表中正在填充数据。启动画面退出。
下一个活动需要两个SQLLite表,并得到这样的数据:
// Open Database
watchItemIdList = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_ITEM_ID);
watchUsers = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_USER);
watchCats = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_CAT);
watchReviews = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_REVIEW);
watchReviewId = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_REVIEW_ID);
watchItems = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_ITEM);
watchUrl = datasource
.getWatchStrings(MySQLiteHelper.COLUMN_TREND_WATCH_URL);
// Close database
在这里得到数据:
public List<String> getWatchStrings(String dbColumn) {
Cursor cursor = database.query(MySQLiteHelper.TABLE_WATCHING_REVIEWS,
allTrendWatchingColumns, null, null, null, null, null);
List<String> array = new ArrayList<String>();
while (cursor.moveToNext()) {
String uname = cursor.getString(cursor.getColumnIndex(dbColumn));
array.add(uname);
}
return array;
}
的应用不断崩溃,我从LogCat
上相信此行:
Cursor cursor = database.query(MySQLiteHelper.TABLE_WATCHING_REVIEWS,
allTrendWatchingColumns, null, null, null, null, null);
并确保在'finally'块中调用'cursor.close()',以确保始终调用它。 – 2013-05-01 20:47:52
谢谢!标记正确。 – KickingLettuce 2013-05-01 21:14:07