保存图像 SQLite 数据库

Question

嗨，我

有这个SQLite数据库，它工作正常，我添加了一个名为Image的列，其数据类型为Blob。然后我允许用户从他们的图库中选择一个图像，然后从中将其更改为 URi，然后更改为 byte[]，但是当我尝试保存数据时，没有收到任何错误消息，但数据没有保存，我不知道为什么？

有什么帮助吗？

用于创建表的我的查询

 public String CREATEQUERY = "CREATE TABLE " + TableData.TableInfo.TABLE_NAME + "("+ TableData.TableInfo.USERNAME + " TEXT," + TableData.TableInfo.PASSWORD + " TEXT," + TableData.TableInfo.IMAGE + "BLOB);";

我的插入方法

public void InsertData (DatabasOpperations DBOpp, String Name, String Password, byte[] Image){
    SQLiteDatabase SQL = DBOpp.getWritableDatabase();
    ContentValues ContentV = new ContentValues();
    ContentV.put(TableData.TableInfo.USERNAME, Name);
    ContentV.put(TableData.TableInfo.PASSWORD, Password);
    ContentV.put(TableData.TableInfo.IMAGE, Image);
    long Insert = SQL.insert(TableData.TableInfo.TABLE_NAME, null, ContentV);
    Cursor Cur = SQL.query(TableData.TableInfo.TABLE_NAME, null, null, null, null, null, null);
    int Res = Cur.getCount();
    int Res2 = Cur.getColumnIndex(TableData.TableInfo.IMAGE);
    Log.d("DatabaseOperations", "Success, 1 Row Added");
    Log.d("DatabaseOperations", "Num " + Res);
    Log.d("DatabaseOperations", "Num " + Res2);
}

调用此方法并保存数据的 java 类

DB.InsertData(DB, Uname, Pass, DBByte);
Toast.makeText(getApplicationContext(), "Success, Registered!", Toast.LENGTH_SHORT).show();
Intent Home = new Intent(Reg.this, MainActivity.class);
startActivity(Home);
finish();

DBByte 是一个

public byte[] DBByte;

图像从 Uri 转换为字节[]

public void onActivityResult(int RequestCode, int ResultCode, Intent Data) {
    if (ResultCode == RESULT_OK) {
        if (RequestCode == SELECTED) {
            Uri SelectedImageUri = Data.getData();
            SelectedImagePath = getPath(SelectedImageUri);
            Log.d("DatabaseOperations", "Image Path :  " + SelectedImagePath);
            Img.setImageURI(SelectedImageUri);
            try {
                FileInputStream FileInpStream = new FileInputStream(SelectedImagePath);
                BufferedInputStream BufInputStream = new BufferedInputStream(FileInpStream);
                DBByte = new byte[BufInputStream.available()];
                BufInputStream.read(DBByte);
                Log.d("DatabaseOperations", "Image Size :  " + DBByte.length + " KB");
            }
            catch (IOException e) {
                Log.d("DatabaseOperations", "Error :  " + SelectedImagePath);
            }
        }
    }
}

Answer 1

您在此处缺少空格，因此没有 BLOB 列

TableInfo.IMAGE + "BLOB);"