的Android無法打開/創建具有開口的問題SQLiteDatabase

喜IM /從另一個類調用時創建一個SQLiteDatabase。 IM目前的學生，這是非常新的給我，所以請任何答案殘酷清晰，所以我可以跟着。的Android無法打開/創建具有開口的問題SQLiteDatabase

測試（）Route.java下調用數據庫類設置數據庫

DatabaseManager db = new DatabaseManager(Route.this, "dbSkyTrain.dbf", null, 1);

而崩潰時的DatabaseManager嘗試運行這行代碼。

感謝這麼多提前有這方面的幫助。我很確定我只是把它設置錯了。

Route.java：

public void Testing(){ 

     //Station Variables 
     int StnID;   //Unique ID, Format: ## 
     String StnLine;  //Format: XXX = Mil, Exp, Eve, Can or YVR 
     int StnLineIndex; //Format: ## 
     int StnZone;   //1, 2, 3 
     int StnTimePrev;  //Time in min to this station from previous station 
     int StnTimeNext;  //Time in min from this station to the next station 
     String StnSwitch; //Is this a switching station T or F 
     String StnName;  //Name 

     //Path Variables 
     int PathStartIndex; //Start station index 
     int PathEndIndex; //Destination or Switching station index 
     String PathLine;  //Line that the train is currently on 
     String PathSwitch; //Name of switching station or "False" if end index is destination 

     DatabaseManager db = new DatabaseManager(Route.this, "dbSkyTrain.dbf", null, 1); 
     Station station = new Station(); 
     Path path = new Path(); 


     //Get Station usage 
     station = db.getStation("Lougheed"); 
     StnID = station.ID(); 
     StnLine = station.Line(); 
     StnLineIndex = station.LineIndex(); 
     StnZone = station.Zone(); 
     StnTimePrev = station.TimeNext(); 
     StnTimeNext = station.TimePrev(); 
     StnSwitch = station.Switch(); 
     StnName = station.Name(); 

     //alternative get station method 
     station = db.getStation("Mil", 10); 
     StnID = station.ID(); 
     StnLine = station.Line(); 
     StnLineIndex = station.LineIndex(); 
     StnZone = station.Zone(); 
     StnTimePrev = station.TimeNext(); 
     StnTimeNext = station.TimePrev(); 
     StnSwitch = station.Switch(); 
     StnName = station.Name(); 
     db.close(); 


     //Path usage - returns endIndex of destination station or switching station 
     path = getPath("Lougheed", "YVR-Airport"); 
     PathStartIndex = path.StartIndex(); 
     PathEndIndex = path.EndIndex(); 
     PathLine = path.Line(); 
     PathSwitch = path.SwitchStn(); 

     Toast.makeText(Route.this, PathLine + " " + PathStartIndex + " " + PathEndIndex + " " + PathSwitch , Toast.LENGTH_LONG).show(); 




    } 

    //Get Route instructions////////////////////////////////////////////////////////////////////////////////////// 
    public Path getPath(String StartStation, String EndStation){ 

     String strSQL; 
     String strLine, strLineStart, strLineEnd; 
     int intIndexStart, intIndexEnd; 
     String strSwitch; 

     //Table Station Variables 
     String tbl_Stations = "tblStations"; 

     String key_StnID = "StnID"; 
     String key_StnName = "StnName"; 
     String key_StnLine = "StnLine"; 
     String key_StnLineIndex = "StnLineIndex"; 
     String key_StnZone = "StnZone"; 
     String key_StnTimePrev = "StnTimePrev"; 
     String key_StnTimeNext = "StnTimeNext"; 
     String key_StnSwitch = "StnSwitch"; 



     DatabaseManager dbManager = new DatabaseManager(Route.this, "dbSkyTrain.dbf", null, 1); 
     SQLiteDatabase db = dbManager.getWritableDatabase(); 

     //First Station 
     strSQL = "SELECT * FROM " + tbl_Stations + " WHERE " + key_StnName + "=" + StartStation; 
     Cursor c = db.rawQuery(strSQL, null); 
     c.moveToFirst(); 

     Station station = new Station(c.getString(0), c.getString(1), c.getString(2), c.getString(3), c.getString(4), c.getString(5), c.getString(6), c.getString(7)); 

     strLineStart = station.Line(); 
     intIndexStart = station.LineIndex(); 


     //Second Station 
     strSQL = "SELECT * FROM " + tbl_Stations + " WHERE " + key_StnName + "=" + EndStation; 
     c = db.rawQuery(strSQL, null); 
     c.moveToFirst(); 

     station = new Station(c.getString(0), c.getString(1), c.getString(2), c.getString(3), c.getString(4), c.getString(5), c.getString(6), c.getString(7)); 

     strLineEnd = station.Line(); 
     intIndexEnd = station.LineIndex(); 

     db.close();

DatabaseManager.java

package com.example.skytrainfinalproject; 

import android.content.Context; 
import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteDatabase.CursorFactory; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.widget.Toast; 

public class DatabaseManager extends SQLiteOpenHelper{ 

    //Database variables 
    String db_Name = "dbSkyTrain.dbf"; 

    //Table Station Variables 
    String tbl_Stations = "tblStations"; 

    String key_StnID = "StnID"; 
    String key_StnName = "StnName"; 
    String key_StnLine = "StnLine"; 
    String key_StnLineIndex = "StnLineIndex"; 
    String key_StnZone = "StnZone"; 
    String key_StnTimePrev = "StnTimePrev"; 
    String key_StnTimeNext = "StnTimeNext"; 
    String key_StnSwitch = "StnSwitch"; 

    //Table Options Variables 
    String tbl_Options = "tblOptions"; 

    String key_OptID = "OptID"; 
    String key_OptName = "OptName"; 
    String key_OptValue = "OptValue"; 

    //Table GPS Variables 
    String tbl_Gps = "tblGps"; 

    String key_GpsID = "GpsID"; 
    String key_GpsName = "GpsName"; 
    String key_Gpslongitude = "Gpslongitude"; 
    String key_Gpslatitude = "Gpslatitude"; 


    //Constructor////////////////////////////////////////////////////////////////////////////////////// 
    public DatabaseManager(Context context, String dbName, CursorFactory factory, 
      int version) { 
     super(context, dbName, factory, version); 


    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 


     //Drop tables -comment out tables to save 
     db.execSQL("DROP TABLE IF EXISTS " + tbl_Stations); 
     db.execSQL("DROP TABLE IF EXISTS " + tbl_Options); 
     //db.execSQL("DROP TABLE IF EXISTS " + tbl_Gps); 

     //Recreate tables 
     CreateTblStations(); 
     CreateTblOptions(); 
     //CreateTblGps(); 

    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 


    } 

    //Create GPS Table////////////////////////////////////////////////////////////////////////////////////// 
    public void CreateTblGps(){ 

    } 

    //Add GPS////////////////////////////////////////////////////////////////////////////////////// 
    public void addGps(){ 

    } 

    //Get GPS////////////////////////////////////////////////////////////////////////////////////// 
    public void getGps(){ 

    } 

    //Create Options Table////////////////////////////////////////////////////////////////////////////////////// 
    public void CreateTblOptions(){ 

     SQLiteDatabase db = getWritableDatabase(); 

     //Table Values 
     String Create_tblOptions = "CREATE TABLE IF NOT EXISTS " + tbl_Options + "(" + 
            key_OptID + " INTEGER PRIMARY KEY," + 
            key_OptName +" TEXT," + 
            key_OptValue + " TEXT)"; 

     //Create Table 
     db.execSQL(Create_tblOptions); 


     addOption(db, "01", "TicketDefault", "Adult"); 

     addOption(db, "02", "TicketA1", "2.75"); 
     addOption(db, "03", "TicketA2", "4.00"); 
     addOption(db, "04", "TicketA3", "5.50"); 

     addOption(db, "05", "TicketC1", "1.75"); 
     addOption(db, "06", "TicketC2", "2.75"); 
     addOption(db, "07", "TicketC3", "3.75"); 

     addOption(db, "08", "AfterHours", "6:30"); 
     addOption(db, "09", "YVRCharge", "5.00"); 

     db.close();  
    } 

    //Add Option////////////////////////////////////////////////////////////////////////////////////// 
    public void addOption(SQLiteDatabase db, String ID, String Name, String Value){ 

     String insertRow; 


     insertRow = "INSERT INTO " + tbl_Options + " values ('" + Integer.parseInt(ID) + "', '" + Name + "', '" + Value + "');"; 
     db.execSQL(insertRow); 

    } 

    //Get Option////////////////////////////////////////////////////////////////////////////////////// 
    public Option getOption(int ID){ 

     String strSQL; 

     SQLiteDatabase db = getReadableDatabase(); 

     strSQL = "SELECT * FROM tblOptions WHERE OptID=" + String.valueOf(ID); 
     Cursor c = db.rawQuery(strSQL, null); 
     c.moveToFirst(); 

     Option option = new Option(c.getString(0), c.getString(1), c.getString(2)); 

     c.close(); 
     db.close(); 

     return option; 
    } 

    //Create Station Table////////////////////////////////////////////////////////////////////////////////////// 
    public void CreateTblStations(){ 

     SQLiteDatabase db = getWritableDatabase(); 

     //Table Values 
     String Create_tblStations = "CREATE TABLE IF NOT EXISTS " + tbl_Stations + "(" + 
            key_StnID + " INTEGER PRIMARY KEY," + 
            key_StnLine +" TEXT," + 
            key_StnLineIndex + " INTEGER," + 
            key_StnZone + " INTEGER," + 
            key_StnTimePrev + " INTEGER," + 
            key_StnTimeNext + " INTEGER," + 
            key_StnSwitch + " TEXT," + 
            key_StnName + " TEXT)"; 

     //Create Table 
     db.execSQL(Create_tblStations); 



     //Fill Table 

     //Format (StnID, LineIndex, Line, Zone, TimePrev, TimeNext, Switch, Name)   
     addStation(db, "01", "19", "Exp", "3", "2", "3", "F", "King George"); 
     addStation(db, "02", "18", "Exp", "3", "3", "2", "F", "Surrey Central"); 
     addStation(db, "03", "17", "Exp", "3", "2", "3", "F", "Gateway"); 
     addStation(db, "04", "16", "Exp", "3", "3", "2", "F", "Scott Road"); 

     addStation(db, "05", "28", "Mil", "1", "1", "0", "F", "VCC-Clark"); 
     addStation(db, "06", "27", "Mil", "1", "3", "1", "T", "Commercial"); 
     addStation(db, "07", "26", "Mil", "1", "1", "3", "F", "Renfrew"); 
     addStation(db, "08", "25", "Mil", "1", "3", "1", "F", "Rupert"); 
     addStation(db, "09", "24", "Mil", "2", "1", "3", "F", "Gilmore"); 
     addStation(db, "10", "23", "Mil", "2", "2", "1", "F", "Brentwood"); 
     addStation(db, "11", "22", "Mil", "2", "2", "2", "F", "Holdom"); 
     addStation(db, "12", "21", "Mil", "2", "2", "2", "F", "Sperling/Burnaby Lake"); 
     addStation(db, "13", "20", "Mil", "2", "3", "2", "F", "Lake City"); 
     addStation(db, "14", "19", "Mil", "2", "2", "3", "F", "Production Way/University"); 
     addStation(db, "15", "18", "Mil", "2", "3", "2", "T", "Lougheed"); 
     addStation(db, "16", "17", "Mil", "2", "2", "3", "F", "Braid"); 
     addStation(db, "17", "16", "Mil", "2", "3", "2", "F", "Sapperton"); 

     addStation(db, "18", "15", "Mil-Exp", "2", "1", "3", "T", "Columbia"); 
     addStation(db, "19", "14", "Mil-Exp", "2", "4", "1", "F", "New Westminster"); 
     addStation(db, "20", "13", "Mil-Exp", "2", "2", "4", "F", "22nd St"); 
     addStation(db, "21", "12", "Mil-Exp", "2", "3", "2", "F", "Edmonds"); 
     addStation(db, "22", "11", "Mil-Exp", "2", "2", "3", "F", "Royal Oak"); 
     addStation(db, "23", "10", "Mil-Exp", "2", "1", "2", "F", "Metrotown"); 
     addStation(db, "24", "09", "Mil-Exp", "1", "2", "1", "F", "Patterson"); 
     addStation(db, "25", "08", "Mil-Exp", "1", "2", "2", "F", "Joyce"); 
     addStation(db, "26", "07", "Mil-Exp", "1", "1", "2", "F", "29th Ave"); 
     addStation(db, "27", "06", "Mil-Exp", "1", "3", "1", "F", "Nanaimo"); 
     addStation(db, "28", "05", "Mil-Exp", "1", "3", "3", "T", "Commercial"); 
     addStation(db, "29", "04", "Mil-Exp", "1", "2", "3", "F", "Main"); 
     addStation(db, "30", "03", "Mil-Exp", "1", "1", "2", "F", "Stadium"); 
     addStation(db, "31", "02", "Mil-Exp", "1", "1", "1", "F", "Granville"); 
     addStation(db, "32", "01", "Mil-Exp", "1", "2", "1", "F", "Burrard"); 

     addStation(db, "33", "00", "Mil-Exp-Can-YVR", "1", "0", "2", "T", "Waterfront"); 

     addStation(db, "34", "01", "Can-YVR", "1", "2", "2", "F", "Vancouver City Center"); 
     addStation(db, "35", "02", "Can-YVR", "1", "2", "2", "F", "Yaletown-Roundhouse"); 
     addStation(db, "36", "03", "Can-YVR", "1", "2", "1", "F", "Olympic Village"); 
     addStation(db, "37", "04", "Can-YVR", "1", "1", "2", "F", "Broadway-City Hall"); 
     addStation(db, "38", "05", "Can-YVR", "1", "2", "3", "F", "King Edward"); 
     addStation(db, "39", "06", "Can-YVR", "1", "3", "2", "F", "Oakridge-41st"); 
     addStation(db, "40", "07", "Can-YVR", "1", "2", "3", "F", "Langara-49th"); 
     addStation(db, "41", "08", "Can-YVR", "1", "3", "2", "F", "Marine Drive"); 
     addStation(db, "42", "09", "Can-YVR", "2", "2", "9", "T", "Bridgeport"); 

     addStation(db, "43", "10", "Can", "2", "2", "2", "F", "Aberdeen"); 
     addStation(db, "44", "11", "Can", "2", "2", "2", "F", "Lansdowne"); 
     addStation(db, "45", "12", "Can", "2", "2", "0", "F", "Brighouse"); 

     addStation(db, "46", "10", "YVR", "2", "9", "2", "F", "Templeton"); 
     addStation(db, "47", "11", "YVR", "2", "2", "2", "F", "Sea Island Center"); 
     addStation(db, "48", "12", "YVR", "2", "2", "0", "F", "YVR-Airport"); 

     db.close(); 

    } 

    //Add Station////////////////////////////////////////////////////////////////////////////////////// 
    public void addStation(SQLiteDatabase db, String ID, String LineIndex, String Line, String Zone, String TimePrev, String TimeNext, String Switch, String Name){ 

     String insertRow; 


     insertRow = "INSERT INTO " + tbl_Stations + " values ('" + Integer.parseInt(ID) + "', '" + Integer.parseInt(LineIndex) + "', '" + Line + "', '" + Integer.parseInt(Zone) + "', '" + Integer.parseInt(TimePrev) + "', '" + Integer.parseInt(TimeNext) + "', '" + Switch + "', '" + Name + "');"; 
     db.execSQL(insertRow); 


    } 

    //Get Station////////////////////////////////////////////////////////////////////////////////////// 
    public Station getStation(String strStnName){ 

     String strSQL; 

     SQLiteDatabase db = getReadableDatabase(); 

     strSQL = "SELECT * FROM " + tbl_Stations + " WHERE " + key_StnName + "=" + strStnName; 
     Cursor c = db.rawQuery(strSQL, null); 
     c.moveToFirst(); 

     Station station = new Station(c.getString(0), c.getString(1), c.getString(2), c.getString(3), c.getString(4), c.getString(5), c.getString(6), c.getString(7)); 

     c.close(); 
     db.close(); 

     return station; 

    } 

    public Station getStation(String strLine, int intLineIndex){ 

     String strSQL; 

     SQLiteDatabase db = getReadableDatabase(); 

     strSQL = "SELECT * FROM " + tbl_Stations + " WHERE " + key_StnLine + "=" + strLine + " AND " + key_StnLineIndex + "=" + String.valueOf(intLineIndex); 
     Cursor c = db.rawQuery(strSQL, null); 
     c.moveToFirst(); 

     Station station = new Station(c.getString(0), c.getString(1), c.getString(2), c.getString(3), c.getString(4), c.getString(5), c.getString(6), c.getString(7)); 

     c.close(); 
     db.close(); 

     return station; 

    } 





}

錯誤日誌

03-30 18:23:32.736: W/ApplicationPackageManager(27014): getCSCPackageItemText() 
03-30 18:23:35.038: D/AndroidRuntime(27014): Shutting down VM 
03-30 18:23:35.038: W/dalvikvm(27014): threadid=1: thread exiting with uncaught exception (group=0x4189cda0) 
03-30 18:23:35.048: E/AndroidRuntime(27014): FATAL EXCEPTION: main 
03-30 18:23:35.048: E/AndroidRuntime(27014): Process: com.example.skytrainfinalproject, PID: 27014 
03-30 18:23:35.048: E/AndroidRuntime(27014): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.skytrainfinalproject/com.example.skytrainfinalproject.Route}: java.lang.IllegalStateException: getDatabase called recursively 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.ActivityThread.access$900(ActivityThread.java:161) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.os.Handler.dispatchMessage(Handler.java:102) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.os.Looper.loop(Looper.java:157) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.ActivityThread.main(ActivityThread.java:5356) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at java.lang.reflect.Method.invokeNative(Native Method) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at java.lang.reflect.Method.invoke(Method.java:515) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at dalvik.system.NativeStart.main(Native Method) 
03-30 18:23:35.048: E/AndroidRuntime(27014): Caused by: java.lang.IllegalStateException: getDatabase called recursively 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:204) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.example.skytrainfinalproject.DatabaseManager.CreateTblStations(DatabaseManager.java:152) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.example.skytrainfinalproject.DatabaseManager.onCreate(DatabaseManager.java:61) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:188) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.example.skytrainfinalproject.DatabaseManager.getStation(DatabaseManager.java:249) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.example.skytrainfinalproject.Route.Testing(Route.java:62) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at com.example.skytrainfinalproject.Route.onCreate(Route.java:28) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.Activity.performCreate(Activity.java:5426) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105) 
03-30 18:23:35.048: E/AndroidRuntime(27014): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269) 
03-30 18:23:35.048: E/AndroidRuntime(27014): ... 11 more 
03-30 18:23:37.160: I/Process(27014): Sending signal. PID: 27014 SIG: 9

來源

2014-03-30 Fenris

Stacktrace，請問？ – Turnsole

對不起，第一次使用該網站。它的現在。 – Fenris

如果您正在使用SQLiteOpenHelper那麼你很可能不想調用SQLiteDatabase.openOrCreateDatabase（...）。該助手類爲SQLiteDatabase提供了一個抽象層。你的構造應該是這樣的：

public DatabaseManager(Context context, String dbName, CursorFactory factory, 
     int version) { 
    super(context, dbName, factory, version); 
}

然後你可以使用你的數據庫是這樣的：根據需要

DatabaseManager dbManager = new DatabaseManager(context, "dbSkyTrain.dbf", null, 1); 
SQLiteDatabase db = dbManager.getWritableDatabase(); 
// Do database operations 
db.close();

的onCreate方法被調用。

來源

2014-03-30 23:06:23 Broatian

感謝您的回覆，我應用了您的修復程序，並將路由邏輯從databaseManager.java文件移至Route.java文件，但現在即時通訊獲得了不同的錯誤。我張貼在上面，如果你會那麼友善，看看會很棒。 – Fenris

根據你的日誌，似乎你仍然在DatabaseManager.getStation（..）中調用SQLiteDatabase.openOrCreateDatabase（..）。這需要一個你沒有提供的絕對路徑。替換DatabaseManager.getWritableDatabase（這與同時由供應的場景 – Broatian

感到很抱歉給您提供應用程序的數據庫的路徑前綴數據庫路徑的所有調用），我做了一些改變，並上傳新的日誌。我想知道它是否與上下文有關。如果從Route.java調用應該行看起來像這樣：DatabaseManager dbManager = new DatabaseManager（Route.this，「dbSkyTrain.dbf」，null，1）; – Fenris

的Android無法打開/創建具有開口的問題SQLiteDatabase

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