Android中的自定义路径数据库

Question

我想打开一个自定义路径，创建一个数据库，创建一个表并插入值。

public class MySQLiteOpenHelper extends SQLiteOpenHelper {
    MySQLiteOpenHelper(Context context) {
        super(context, "/mnt/sdcard/database_name.db", null, 0);
    }
}

public class DBHandler extends SQLiteOpenHelper {

    public Context context;
    public static final String DATABASE_PATH=Environment.getExternalStorageDirectory().getAbsolutePath()+"/WebService/Databases/";
    private static final String DATABASE_NAME="database_name.db";

    public DBHandler(Context context){
        //Create the Database
        super(context, DATABASE_PATH+DATABASE_NAME, null, 1);
        this.context=context;
        Log.i("databaseService","Database Created ");
    }
}

---

Stacktrace：

E/SQLiteLog: (14) cannot open file at line 35807 of [553a923c82]
(14) os_unix.c:35807: (2) open(/storage/emulated/0/WebService/Databases/database_name.db) - 
E/SQLiteDatabase: Failed to open database '/storage/emulated/0/WebService/Databases/database_name.db'.
android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
    at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
    at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:211)
    at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:195)
    at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:493)
    at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:200)