Android 应用程序崩溃仅在设备上，而不在模拟器上

错误： 04-24 08:48:10.779:INFO/Database（31359）：sqlite返回：错误代码=14，消息=无法在源代码行25467处打开文件

什么样的错误只会干扰设备而不会干扰模拟器

我应该从哪里开始检查

public class DBHelper extends SQLiteOpenHelper {

private static String DB_PATH = "";
private static final String DB_NAME = "med.sqlite";
private SQLiteDatabase myDataBase;
private final Context myContext;

private static DBHelper mDBConnection;

/**
 * Constructor 
 * Takes and keeps a reference of the passed context in order to access to the application assets and resources.
 * @param context
 */
private DBHelper(Context context) {
    super(context, DB_NAME, null, 1);
    this.myContext = context;
    DB_PATH = "/data/data/"+ context.getApplicationContext().getPackageName()   + "/databases/";
    // The Android's default system path of your application database is
    // "/data/data/mypackagename/databases/"
}

/**
 * getting Instance
 * @param context
 * @return DBAdapter
 */
public static synchronized DBHelper getDBAdapterInstance(Context context) {
    if (mDBConnection == null) {
        mDBConnection = new DBHelper(context);
    }
    return mDBConnection;
}

/**
 * Creates an empty database on the system and rewrites it with your own database.
 **/
public void createDataBase() throws IOException {
    boolean dbExist = checkDataBase();
    if (dbExist) {
        // do nothing - database already exist
    } else {
        // By calling following method 
        // 1) an empty database will be created into the default system path of your application 
        // 2) than we overwrite that database with our database.
        this.getReadableDatabase();
        try {
            copyDataBase();
        } catch (IOException e) {
            throw new Error("Error copying database");
        }
    }
}

/**
 * Check if the database already exist to avoid re-copying the file each time you open the application.
 * @return true if it exists, false if it doesn't
 */
private boolean checkDataBase() {
    SQLiteDatabase checkDB = null;
    try {
        String myPath = DB_PATH + DB_NAME;
        checkDB = SQLiteDatabase.openDatabase(myPath, null,
                SQLiteDatabase.OPEN_READONLY);

    } catch (SQLiteException e) {
        // database does't exist yet.
    }
    if (checkDB != null) {
        checkDB.close();
    }
    return checkDB != null ? true : false;
}

/**
 * Copies your database from your local assets-folder to the just created
 * empty database in the system folder, from where it can be accessed and
 * handled. This is done by transfering bytestream.
 * */
private void copyDataBase() throws IOException {
        // Open your local db as the input stream
    InputStream myInput = myContext.getAssets().open(DB_NAME);
        // Path to the just created empty db
    String outFileName = DB_PATH + DB_NAME;
        // Open the empty db as the output stream
    OutputStream myOutput = new FileOutputStream(outFileName);
        // transfer bytes from the inputfile to the outputfile
    byte[] buffer = new byte[1024];
    int length;
    while ((length = myInput.read(buffer)) > 0) {
        myOutput.write(buffer, 0, length);
    }
        // Close the streams
    myOutput.flush();
    myOutput.close();
    myInput.close();
}

/**
 * Open the database
 * @throws SQLException
 */
public void openDataBase() throws SQLException {
    String myPath = DB_PATH + DB_NAME;

    myDataBase = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);       
}

/**
 * Close the database if exist
 */
@Override
public synchronized void close()
{
    if (myDataBase != null)
        myDataBase.close();
    super.close();
}

/**
 * Call on creating data base for example for creating tables at run time
 */
@Override
public void onCreate(SQLiteDatabase db)
{
}

/**
 * can used for drop tables then call onCreate(db) function to create tables again - upgrade
 */
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
}

// ----------------------- CRUD Functions ------------------------------

/**
 * This function used to select the records from DB.
 * @param tableName
 * @param tableColumns
 * @param whereClase
 * @param whereArgs
 * @param groupBy
 * @param having
 * @param orderBy
 * @return A Cursor object, which is positioned before the first entry.
 */
public Cursor selectRecordsFromDB(String tableName, String[] tableColumns,
        String whereClase, String whereArgs[], String groupBy,
        String having, String orderBy)
{
    return myDataBase.query(tableName, tableColumns, whereClase, whereArgs,
            groupBy, having, orderBy);
}



/**
 * select records from db and return in list
 * @param tableName
 * @param tableColumns
 * @param whereClase
 * @param whereArgs
 * @param groupBy
 * @param having
 * @param orderBy
 * @return ArrayList<ArrayList<String>>
 */
public ArrayList<ArrayList<String>> selectRecordsFromDBList(String tableName, String[] tableColumns,
        String whereClase, String whereArgs[], String groupBy,
        String having, String orderBy)
{       

    ArrayList<ArrayList<String>> retList = new ArrayList<ArrayList<String>>();
      ArrayList<String> list = new ArrayList<String>();
      Cursor cursor = myDataBase.query(tableName, tableColumns, whereClase, whereArgs,
                groupBy, having, orderBy);        
      if (cursor.moveToFirst()) {
         do {
             list = new ArrayList<String>();
             for(int i=0; i<cursor.getColumnCount(); i++){                   
                 list.add( cursor.getString(i) );
             }   
             retList.add(list);
         } while (cursor.moveToNext());
      }
      if (cursor != null && !cursor.isClosed()) {
         cursor.close();
      }
      return retList;

}   

/**
 * This function used to insert the Record in DB. 
 * @param tableName
 * @param nullColumnHack
 * @param initialValues
 * @return the row ID of the newly inserted row, or -1 if an error occurred
 */
public long insertRecordsInDB(String tableName, String nullColumnHack,
        ContentValues initialValues) {
    return myDataBase.insert(tableName, nullColumnHack, initialValues);
}

/**
 * This function used to update the Record in DB.
 * @param tableName
 * @param initialValues
 * @param whereClause
 * @param whereArgs
 * @return true / false on updating one or more records
 */
public boolean updateRecordInDB(String tableName,
        ContentValues initialValues, String whereClause, String whereArgs[]) {
    return myDataBase.update(tableName, initialValues, whereClause,
            whereArgs) > 0;             
}

/**
 * This function used to update the Record in DB.
 * @param tableName
 * @param initialValues
 * @param whereClause
 * @param whereArgs
 * @return 0 in case of failure otherwise return no of row(s) are updated
 */
public int updateRecordsInDB(String tableName,
        ContentValues initialValues, String whereClause, String whereArgs[]) {
    return myDataBase.update(tableName, initialValues, whereClause, whereArgs);     
}

/**
 * This function used to delete the Record in DB.
 * @param tableName
 * @param whereClause
 * @param whereArgs
 * @return 0 in case of failure otherwise return no of row(s) are deleted.
 */
public int deleteRecordInDB(String tableName, String whereClause,
        String[] whereArgs) {
    return myDataBase.delete(tableName, whereClause, whereArgs);
}


/**
 * apply raw Query
 * @param query
 * @param selectionArgs
 * @return Cursor
 */
public Cursor selectRecordsFromDB(String query, String[] selectionArgs) {
    return myDataBase.rawQuery(query, selectionArgs);       
}


/**
 * apply raw query and return result in list
 * @param query
 * @param selectionArgs
 * @return ArrayList<ArrayList<String>>
 */
public ArrayList<ArrayList<String>> selectRecordsFromDBList(String query, String[] selectionArgs) {       
      ArrayList<ArrayList<String>> retList = new ArrayList<ArrayList<String>>();
      ArrayList<String> list = new ArrayList<String>();
      Cursor cursor = myDataBase.rawQuery(query, selectionArgs);

      if (cursor.moveToFirst()) {
         do {
             list = new ArrayList<String>();
             for(int i=0; i<cursor.getColumnCount(); i++){                   
                 list.add( cursor.getString(i) );
             }   
             retList.add(list);
         } while (cursor.moveToNext());
      }
      if (cursor != null && !cursor.isClosed()) {
         cursor.close();
      }

      return retList;
   }

你确定这条路吗

DB_PATH = "/data/data/"+ context.getApplicationContext().getPackageName()
    + "/databases/";

---

存在，并且可为您编写？我先检查一下。

也许数据库不是问题所在：

04-24 12:04:14.339:调试/资产（3807）： 数据超过解压数据最大值 （17304576对4194304）

---

可能assets文件夹对于手机来说太大了，但是对于emulator来说不是。尝试删除每个资产文件（数据库除外）或尝试减小数据库的大小。

是否将大文件插入数据库？我的意思是，它确实说，

不能打开源代码行25467处的文件，所以如果您有一个sql文件，请检查该行？如果没有实际编码，则无法从该错误中判断出任何错误出现错误的行将是有帮助的。实际上，尽可能多地粘贴代码行。另外，您可能会发现这个线程很有趣：您是如何打开数据库的？你在检查它是否存在吗？设备没有存储空间了吗？我会根据你的要求更新我的问题他应该处理掉！切勿使用硬编码路径（请阅读：）
DB_PATH = "/data/data/"+ context.getApplicationContext().getPackageName()
    + "/databases/";