Your issue “there is always only one table created”, will be due to the very common misconception that the onCreate method, in DatabaseHelper.java (generally termed the Database Helper) runs every time the App is run. Actually the onCreate method is only automatically invoked once for the lifetime of the database. If the data held in … Read more
developer.android check this out.. such a small data should be stored in Shared Preferences, As you are new to technology try to solve problem yourself before asking such questions. Google is your tool.. solved Add Database to Android Application [closed]
Create Parent child relational table structure like : User (Parent) a.Interests (Child of User mapped using user_id,interest_id) b.Profession (Child of User mapped using user_id,profession_id) Company (Parent) a.Product(Child of Company mapped using company_id,product_id) 1 solved What is the ideal way to store customized objects
Try it like this: public List<String> getAllLabels() throws SQLiteException { List<String> labels = new ArrayList<String>(); // Select All Query String selectQuery = “select ” + FIGOODSDETAIL_FINISHGOODS + ” from ” + FI_GOODS_DETAIL_TABLE ; SQLiteDatabase db = this.getReadableDatabase(); try { Cursor cursor = db.rawQuery(selectQuery, null); // looping through all rows and adding to list if (cursor.moveToFirst()) … Read more
Like Tobiel said if your data is stored in your database a query will be much better. However, if you need to do it in code you should modify your Collection sort. If in your scoreList you have a collection of Score objects you can compare their scores like this: Collections.sort(scoreList, new Comparator<Score>() { @Override … Read more
Use the operator LIKE in the WHERE clause: SELECT * FROM tablename WHERE user_id = ? OR ‘,’ || can_read_by || ‘,’ LIKE ‘%,’ || ? || ‘,%’; Change ? with the user’s id that you want. See the demo. solved Opposite of WHERE IN SQlite with PHP [duplicate]
I am explaining step by step follow this step. Step 1: Download SQLite browser from http://sqlitebrowser.org/ Step 2: Create a new Database file. Step 3: Copy this file to your assets folder in android studio. Step 4: write this code to your splash activity or any activity before using any database operation. public void copyAssets() … Read more
I’m guessing from what little you have written that you want a variable list of fields (where the list of fields is retrieved from tableB) to be retrieved from tableA. This isn’t possible directly in SQL. You will need to make 2 calls, the first one to retrieve the list of fields, and the second … Read more
I think you are missing some logic operator between those two conditions. eg.: cursor = db.rawQuery(“SELECT * FROM videoplayer where ” + KEY_TAG_ONE + ” like ‘%”+ searchText +”%’ OR ” + KEY_TAG_TWO + ” like ‘%”+ searchText +”%'”, null); Which should select records where KEY_TAG_ONE or KEY_TAG_TWO contains searchText solved Like query for multiple … Read more
Solved this problem. i’m inserting the newly added value into the database but not depending on the database to retrieve and display it but i created new textview and i’m directly getting the text from edittext and setting it to new textview that i created and displaying it.it worked 🙂 solved Not able to display … Read more
You need to move the Cursor to a valid row before trying to access column values with get…(). Add if (cursor.moveToFirst()) { // cursor.get…() } around the cursor access. In case you want all result rows, add a loop, too: if (cursor.moveToFirst()) { do { // cursor.get…() } while (cursor.moveToNext()); } This specific stacktrace is … Read more
This is a question of opinion, so I’m not sure this is the best forum. However you have several options, including some that could be completely free. Rails and PHP as you have mentioned can be used to create a backend using mysql as the data layer. If you are new to both of those … Read more
You can use SharedPreference for achieving this. You need to implement the logic in your SplashActivity. You need to check whether already logged in or not using the value stored in shared preference and show next activity based on that. In your SplashActivity (Where you launch the login activity), add the logic like: // Retrieving … Read more
Sqlite doesn’t place an explicit limit on the length of the VARCHAR, however the maximum length of any string or blob is limited to the maximum length value, which is 1 billion by default. You can increase or decrease this limit as well, though. So you’re really only limited by the memory you have available. … Read more
Try this. int removedId = database.delete(MySQLiteHelper.TABLE_DEVICE , MySQLiteHelper.KEY_ADDRESS + “= ?”,new String[] {address}); solved SQLite exception while trying to delete row