我創建了一個應用程序,它將值存儲到數據庫中並檢索存儲的數據。在運行模式下運行應用程序時,一切似乎都正常(值存儲和檢索成功),但是當我在調試模式下運行時,該進程拋出IllegalStateException,至今未找到原因。數據庫問題:如何診斷和解決問題?
以檢索對象記錄的方法如下:
public Recording getRecording(String filename) {
Recording recording = null;
String where = RECORDING_FILENAME + "='" + filename + "'";
Log.v(TAG, "retrieving recording: filename = " + filename);
try {
cursor = db.query(DATABASE_TABLE_RECORDINGS, new String[]{RECORDING_FILENAME, RECORDING_TITLE, RECORDING_TAGS, RECORDING_PRIVACY_LEVEL, RECORDING_LOCATION, RECORDING_GEO_TAGS, RECORDING_GEO_TAGGING_ENABLED, RECORDING_TIME_SECONDS, RECORDING_SELECTED_COMMUNITY}, where, null, null, null, null);
if (cursor.getCount() > 0) {
cursor.moveToFirst();
//String filename = c.getString(0);
String title = cursor.getString(1);
String tags = cursor.getString(2);
int privacyLevel = cursor.getInt(3);
String location = cursor.getString(4);
String geoTags = cursor.getString(5);
int iGeoTaggingEnabled = cursor.getInt(6);
String recordingTime = cursor.getString(7);
String communityID = cursor.getString(8);
cursor.close();
recording = new Recording(filename, title, tags, privacyLevel, location, geoTags, iGeoTaggingEnabled, recordingTime, communityID);
}
}
catch (SQLException e) {
String msg = e.getMessage();
Log.w(TAG, msg);
recording = null;
}
return recording;
}
並從另一個類稱爲(設置):
private Recording getRecording(String filename) {
dbAdapter = dbAdapter.open();
Recording recording = dbAdapter.getRecording(filename);
dbAdapter.close();
return recording;
}
通過代碼運行雖然上述一切工作正常,但然後我注意到另一個線程中的異常: alt text http://img509.imageshack.us/img509/862/illegalstateexception.jpg
並不知道可能性導致此異常,也無法調試該線程的代碼來診斷原因。
如果有人知道這裏有什麼可能的問題,我會非常感激。
謝謝!
什麼是異常的完整堆棧跟蹤?或者至少,相關的位? – MattC 2009-11-13 18:27:30