Android的SQLite數據庫泄露錯誤

具有SQLite的問題，我，我不知道我可以解決Android的SQLite數據庫泄露錯誤

我不知道這個錯誤可以使OutOfMemoryError異常，因爲我有這個錯誤太所以請幫助我解決這個錯誤

A SQLiteConnection object for database ......... was leaked!

我的數據庫代碼

public class DB_Sqlit extends SQLiteOpenHelper { 

public static final String BDname = "mdata.db"; 

public DB_Sqlit(Context context) { 
    super(context, BDname, null, 1); 
} 

@Override 
public void onCreate(SQLiteDatabase db) { 
    db.execSQL("create table favorite (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, img TEXT, url TEXT, num TEXT, size TEXT)"); 
    } 

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
    db.execSQL("DROP TABLE IF EXISTS favorite"); 
    onCreate(db); 

} 



public Boolean Insert_to_favorite(String name, String img, String url, String num, String size) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues contentValues = new ContentValues(); 
    contentValues.put("name", name); 
    contentValues.put("img", img); 
    contentValues.put("url", url); 
    contentValues.put("num", num); 
    contentValues.put("size", size); 


    long result = db.insert("favorite", null, contentValues); 

    if (result == -1) 
     return false; 
    else 
     return true; 

} 


public List getAllList_Favorite() { 
    List<listitem_gib> list = new ArrayList<listitem_gib>(); 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from favorite", null); 

    if (rs.moveToFirst()){ 
     do { 
      listitem_gib model = new listitem_gib(); 
      model.setId(rs.getString(0)); 
      model.setName(rs.getString(1)); 
      model.seturl(rs.getString(3)); 
      model.setimg(rs.getString(2)); 
      model.setnum(rs.getString(4)); 
      model.setsize(rs.getString(5)); 

      list.add(model); 
     }while (rs.moveToNext()); 
    } 
    Log.d("rewayat data", list.toString()); 
    return list; 
} 


public int get_check_List_Favorite(String Title) { 

    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from favorite Where name like '"+ Title +"'", null); 
    rs.moveToFirst(); 
    Cursor cursor = null; 
    try { 
     int count = rs.getCount(); 
     return count; 
     // do some work with the cursor here. 
    } finally { 
     // this gets called even if there is an exception somewhere above 
     if(cursor != null) 
      cursor.close(); 
    } 

} 


public Integer DeleteFav(String id) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    return db.delete("favorite", "id = ?", new String[]{id}); 
}}}

如何IC請修復此錯誤？

我有問題，這個錯誤可以使OutOfMemoryError？

數據庫編輯

public class DB_Sqlit extends SQLiteOpenHelper { 

public static final String BDname = "mdata.db"; 

public DB_Sqlit(Context context) { 
    super(context, BDname, null, 1); 
} 

@Override 
public void onCreate(SQLiteDatabase db) { 
    db.execSQL("create table favorite (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, img TEXT, url TEXT, num TEXT, size TEXT)"); 
    db.execSQL("create table download (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, img TEXT, url TEXT, num TEXT, size TEXT)"); 

} 

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
    db.execSQL("DROP TABLE IF EXISTS favorite"); 
    db.execSQL("DROP TABLE IF EXISTS download"); 
    onCreate(db); 

} 



public Boolean Insert_to_favorite(String name, String img, String url, String num, String size) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues contentValues = new ContentValues(); 
    contentValues.put("name", name); 
    contentValues.put("img", img); 
    contentValues.put("url", url); 
    contentValues.put("num", num); 
    contentValues.put("size", size); 


    long result = db.insert("favorite", null, contentValues); 
    db.close(); 

    if (result == -1) 
     return false; 
    else 
     return true; 

} 


public List getAllList_Favorite() { 
    List<listitem_gib> list = new ArrayList<listitem_gib>(); 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from favorite", null); 

    if (rs.moveToFirst()){ 
     do { 
      listitem_gib model = new listitem_gib(); 
      model.setId(rs.getString(0)); 
      model.setName(rs.getString(1)); 
      model.seturl(rs.getString(3)); 
      model.setimg(rs.getString(2)); 
      model.setnum(rs.getString(4)); 
      model.setsize(rs.getString(5)); 

      list.add(model); 
     }while (rs.moveToNext()); 
    } 
    Log.d("rewayat data", list.toString()); 
    rs.close(); 
    db.close(); 
    return list; 
} 


public int get_check_List_Favorite(String Title) { 

    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from favorite Where name like '"+ Title +"'", null); 
    rs.moveToFirst(); 
    Cursor cursor = null; 
    try { 
     int count = rs.getCount(); 
     return count; 
     // do some work with the cursor here. 
    } finally { 
     // this gets called even if there is an exception somewhere above 
     if(cursor != null){ 
      rs.close(); 
      db.close(); 
     } 
    } 

} 


public Integer DeleteFav(String id) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    return db.delete("favorite", "id = ?", new String[]{id}); 
} 






public Boolean Insert_to_download(String name, String img, String url, String num, String size) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues contentValues = new ContentValues(); 
    contentValues.put("name", name); 
    contentValues.put("img", img); 
    contentValues.put("url", url); 
    contentValues.put("num", num); 
    contentValues.put("size", size); 


    long result = db.insert("download", null, contentValues); 
    db.close(); 

    if (result == -1) 
     return false; 
    else 
     return true; 

} 


public List getAllList_download() { 
    List<listitem_gib> list = new ArrayList<listitem_gib>(); 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from download", null); 

    if (rs.moveToFirst()){ 
     do { 
      listitem_gib model = new listitem_gib(); 
      model.setId(rs.getString(0)); 
      model.setName(rs.getString(1)); 
      model.seturl(rs.getString(3)); 
      model.setimg(rs.getString(2)); 
      model.setnum(rs.getString(4)); 
      model.setsize(rs.getString(5)); 

      list.add(model); 
     }while (rs.moveToNext()); 
    } 
    Log.d("rewayat data", list.toString()); 
    rs.close(); 
    db.close(); 
    return list; 
} 


public int get_check_List_download(String Title) { 

    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from download Where name like '"+ Title +"'", null); 
    rs.moveToFirst(); 
    Cursor cursor = null; 
    try { 
     int count = rs.getCount(); 
     return count; 
     // do some work with the cursor here. 
    } finally { 
     // this gets called even if there is an exception somewhere above 
     if(cursor != null) { 
      rs.close(); 
      db.close(); 
     } 
    } 
} 


public Integer Deletedown(String id) { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    return db.delete("download", "id = ?", new String[]{id}); 
}}

來源

2016-12-01 fekra

你需要關閉你的遊標每次你得到它們 –

你能告訴我我是如何新的Android和我從教程 – fekra

看到這個http://stackoverflow.com/questions/12801602/android-sqlite-泄露 –

OutOfMemoryError？記住，你必須關閉所有光標：

public List getAllList_Favorite() { 
    List<listitem_gib> list = new ArrayList<listitem_gib>(); 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor rs = db.rawQuery("select * from favorite", null); 

    if (rs.moveToFirst()){ 
     do { 
      listitem_gib model = new listitem_gib(); 
      model.setId(rs.getString(0)); 
      model.setName(rs.getString(1)); 
      model.seturl(rs.getString(3)); 
      model.setimg(rs.getString(2)); 
      model.setnum(rs.getString(4)); 
      model.setsize(rs.getString(5)); 

      list.add(model); 
     }while (rs.moveToNext()); 
    } 
    Log.d("rewayat data", list.toString()); 

    cursor.close(); //*** Add this line! 

    return list; 
}

如果你有這樣的信息：

請修正您的應用程序，以結束正在進行的事務正確和關閉數據庫時它不再需要。

確保關閉應用程序中的所有光標。

來源

2016-12-01 22:43:12 Jorgesys

我關閉所有遊標和數據庫，仍然是相同的問題 – fekra

你可以張貼你的logcat消息。 – Jorgesys

12-02 01：27：25.315：W/SQLiteConnectionPool（20138）：數據庫'/data/user/0/com.kamal.ahmed.rewaya/databases/mdata.db'的SQLiteConnection對象被泄漏！請修復您的應用程序以正確結束正在進行的事務，並在不再需要時關閉數據庫。 – fekra

Android的SQLite數據庫泄露錯誤

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