Android_SQLite.java

public class Database extends SQLiteOpenHelper {
    public Database(Context context) {
        super(context, "database_name", null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase sqLiteDatabase) {
        sqLiteDatabase.execSQL("CREATE TABLE table_name (table_id INTEGER PRIMARY KEY AUTOINCREMENT," +
                "column_1 TEXT, column_2 TEXT)");
    }

    @Override
    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
        sqLiteDatabase.execSQL("DROP TABLE IF EXISTS table_name");
        onCreate(sqLiteDatabase);
    }

    /**
     * insert Data into table
     */
    public void insert_data(String c1_text, String c2_text){
        SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
        ContentValues table_values = new ContentValues();
        table_values.put("column_1", c1_text);
		table_values.put("column_2", c2_text);

        // Inserting Row
        sqLiteDatabase.insert("table_name",null,table_values); //tableName, nullColumnHack, CotentValues
        sqLiteDatabase.close();
    }

    /**
     * get All data from table
     */
    public Cursor get_data(){
        SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
        Cursor table_cursor = sqLiteDatabase.rawQuery("SELECT * FROM table_name", null);
        return table_cursor;
    }

    // update area ----->
    /**
     * update single column
     */
    public boolean updateSingleColumn(String c_name, String update_string, String where_c_name, String identifier_string){
        SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();

        ContentValues table_values = new ContentValues();
        table_values.put(c_name,update_string);

        sqLiteDatabase.update("table_name", table_values, where_c_name + "= ?", new String[]{identifier_string});
        return true;
    }
	
    /**
     * update a row by id
     */
    public boolean updateAllDataById(String c1_text, String c2_text, String where_id){
        SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();

        ContentValues table_values = new ContentValues();
        table_values.put("column_1", c1_text);
		table_values.put("column_2", c2_text);

        sqLiteDatabase.update("table_name",table_values,"id= ?", new String[]{where_id});
        return true;
    }
	// <----- update area
	
    /**
     * delete a row
     */
    public Integer delete_forever(String where_c, String match_string){
        SQLiteDatabase sqLiteDatabase = this.getWritableDatabase();
        return sqLiteDatabase.delete("table_name", where_c+" = ?", new String[]{match_string});
    }
}

// database_name, table_name, table_id, column_1, column_2

invock_sql_data.java

Database database = new Database(this);


public void get_sqlite_data(){
	Cursor table_cursor = database.get_data();
	if (table_cursor.getCount() == 0){}

	while(table_cursor.moveToNext()){
		StringBuffer id = new StringBuffer();
		id.append(table_cursor.getString(0));
	}
}