在你问我之前我已经四处寻找解决问题的办法时,我自己无法解决问题,所以来找你们。
问题
我的光标有一个未被捕获的异常问题,我无法解决它....
错误
09-04 15:48:38.863: I/dalvikvm(1421): Uncaught exception thrown by finalizer (will be discarded):
09-04 15:48:38.863: I/dalvikvm(1421): Ljava/lang/IllegalStateException;: Finalizing cursor android.database.sqlite.SQLiteCursor@44ef6598 on null that has not been deactivated or closed
09-04 15:48:38.863: I/dalvikvm(1421): at android.database.sqlite.SQLiteCursor.finalize(SQLiteCursor.java:596)
09-04 15:48:38.873: I/dalvikvm(1421): at dalvik.system.NativeStart.run(Native Method)
关于其所抱怨的代码
public CCTrackLocation getTrackLocationForID(int id) {
CCTrackLocation trackLocation = new CCTrackLocation();
String selectQuery = "SELECT * FROM "+TABLE_TRACK_LOCATION+" WHERE \"id\" = "+ String.valueOf(id);
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery,null);
if (cursor.moveToFirst()) {
do {
trackLocation.setID(cursor.getInt(0));
trackLocation.segmentID = cursor.getInt(1);
trackLocation.timestamp = cursor.getDouble(2);
trackLocation.latitude = cursor.getDouble(3);
trackLocation.longitude = cursor.getDouble(4);
trackLocation.altitude = cursor.getDouble(5);
trackLocation.velocity = cursor.getDouble(6);
trackLocation.heading = cursor.getDouble(7);
trackLocation.haccuracy = cursor.getDouble(8);
trackLocation.vaccuracy = cursor.getDouble(9);
}while(cursor.moveToNext());
}
cursor.close();
db.close();
return trackLocation;
}
非常感谢任何帮助。
答案 0 :(得分:0)
为了安全起见,将所有db代码放在try / catch / finally子句中,并将cursor.close()和db.close()移动到它的finally部分,以确保关闭即使在
之前抛出异常,也可以使用游标和数据库答案 1 :(得分:0)
要解决这个问题,我就是这样做的。