The following readFile method reads a file and returns an array of bytes that we can pass to the setBytes method. Notice that the SQLiteJDBC driver does not implement the setBinaryStream() method, therefore, you must use the setBytes method instead. How to insert image and retrieve in sqlite database Android Studio. Finally, execute the UPDATE statement by calling the executeUpdate() method of the PreparedStatement object.After that, supply the values to the corresponding parameters using the set* methods of the PreparedStatement object. String picturePath '' File internalStorage mContext.getDir ( 'ReportPictures', Context.Then, create a PreparedStatement object from the Connection object. If you really, really want to you can use a very long hex literal as a blob literal: insert into memes (img, name) values (X0102030405060708090a0b0c0d0e0f, 1.Next, connect to the SQLite database to get the Connection object. ![]() and use that string as the value to insert via native SQL. ![]() The string representation of the image will be much larger than the binary representation. Im not sure that I, personally, would store the image as a base64-encoded string. To update the picture column with the data from the picture file: You extract the image as a byte and then either convert that to the bytes, as a string of hexadecimal characters and then enclose that string in X' yourhexadecimalstring '. To load and save more than one image, you would need to insert an ID field into the table, and then use a where clause on your SQL select statement. Second, prepare a picture file and place it in a folder e.g., C:\temp as follows: Materials Code language: SQL (Structured Query Language) ( sql ) ALTER TABLE materials ADD COLUMN picture blob Code language: SQL (Structured Query Language) ( sql ) Insert BLOB data into SQLite databaseįirst, query data from the materials table to view its content: SELECT id, You should save your images into a specific folder and then insert the path of each image into the database. The following ALTER TABLE statement adds the picture column to the materials table. ![]() To do this, we add a column whose data type is BLOB to the materials table. Suppose we have to store a picture for each material in the materials table. Summary: this tutorial shows you step by step how to update and select the BLOB from an SQLite database.įor the demonstration, we will use the materials table that we created in the creating table tutorial.
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