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POListView blank rows
 

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    <p>For some reason my ListView has blank rows as seen in the pic here. I can't delete them but with the rows with data in them I could delete them just fine.I'm using a SimpleCursorAdapter,ListAdapter and CursorAdapter to populate my ListView from a SQLitedatabase.</p> <p><img src="https://i.stack.imgur.com/tUWmZ.png" alt="Admin Activity"></p> <p>Admin Class</p> <pre><code>package com.fullfrontalgames.numberfighter; import android.app.AlertDialog; import android.app.Dialog; import android.app.ListActivity; import android.content.Context; import android.content.DialogInterface; import android.database.Cursor; import android.os.Bundle; import android.support.v4.widget.CursorAdapter; import android.support.v4.widget.SimpleCursorAdapter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; public class Admin extends ListActivity { @Override public void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.admin); DBAdapter db = new DBAdapter(this); db.open(); ListView UsernameList = (ListView)findViewById(android.R.id.list); final Cursor playeraccounts = db.GetAllPlayers(); db.changeCursor(playeraccounts); String[] from = new String[] { "USERNAME" }; int[] to = new int[] { R.id.AdminTextView }; ListAdapter cursorAdapter = new SimpleCursorAdapter(this, R.layout.admin, playeraccounts, from, to, 0); UsernameList.setAdapter(cursorAdapter); abstract class CustomCursorAdapter extends CursorAdapter { public CustomCursorAdapter(Context context, Cursor c, int flags) { super(context, playeraccounts, flags); inflater = LayoutInflater.from(context); } LayoutInflater inflater; @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { convertView = inflater.inflate(R.layout.admin, null); holder = new ViewHolder(); holder.text1 = (TextView)convertView.findViewById(R.id.AdminTextView); holder.button = (Button)convertView.findViewById(R.id.PlayerDelete); convertView.setTag(holder); } else { holder = (ViewHolder)convertView.getTag(); return convertView; } class ViewHolder { TextView text1; } holder.text1.setText(position); holder.button.setText(position); return convertView; } } } public void onClickDelete(View view) { int id = 0; Button deletebutton = (Button)findViewById(R.id.PlayerDelete); // TODO Auto-generated method stub showDialog(id); } @Override public Dialog onCreateDialog(final int id) { final DBAdapter db = new DBAdapter(this); db.open(); switch (id) { case 0: return new AlertDialog.Builder(this).setIcon(R.drawable.icon) .setTitle("Would you like to delete this player?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int whichButton) { // TODO Auto-generated method stub TextView playernames = (TextView)findViewById(R.id.AdminTextView); String userName = playernames.getText().toString(); db.deleteEntry(userName); Toast.makeText(getBaseContext(), "Player deleted", Toast.LENGTH_SHORT).show(); } }).setNegativeButton("No", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int whichButton) { Toast.makeText(getBaseContext(), "Canceled", Toast.LENGTH_SHORT) .show(); } }) .create(); } return null; } } </code></pre> <p>DBAdapter class</p> <pre><code> package com.fullfrontalgames.numberfighter; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.SQLException; import android.database.sqlite.SQLiteDatabase; public class DBAdapter { static final String DATABASE_NAME = "NFDB.db"; static final int DATABASE_VERSION = 2; public static final int NAME_COLUMN = 1; // TODO: Create public field for each column in your table. // SQL Statement to create a new database. static final String DATABASE_CREATE = "create table NFDB (" + "ID integer primary key autoincrement, " + "USERNAME text," + "PASSWORD text, EMAIL text, NUMBERINPUT text, " + "SCORE text, FRIENDS text); "; static final String CREATE_INDEX_KEYTYPE = "CREATE UNIQUE INDEX idx_keytype ON tableName(USERNAME)"; // Variable to hold the database instance public SQLiteDatabase db; // Context of the application using the database. private final Context context; // Database open/upgrade helper private final DataBaseHelper DBHelper; public DBAdapter(Context _context) { context = _context; DBHelper = new DataBaseHelper(context, DATABASE_NAME, null, DATABASE_VERSION); } public DBAdapter open() throws SQLException { db = DBHelper.getWritableDatabase(); return this; } public void close() { db.close(); } public SQLiteDatabase getDatabaseInstance() { return db; } public void insertEntry(String userName, String password, String email) { ContentValues newValues = new ContentValues(); // Assign values for each row. newValues.put("USERNAME", userName); newValues.put("PASSWORD", password); newValues.put("EMAIL", email); // Insert the row into your table db.insert("NFDB", null, newValues); // /Toast.makeText(context, "Reminder Is Successfully Saved", // Toast.LENGTH_LONG).show(); } public int deleteEntry(String userName) { // String id=String.valueOf(ID); String where = "USERNAME=?"; int numberOFEntriesDeleted = db.delete("NFDB", where, new String[] { userName }); // Toast.makeText(context, // "Number fo Entry Deleted Successfully : "+numberOFEntriesDeleted, // Toast.LENGTH_LONG).show(); return numberOFEntriesDeleted; } public String getSinlgeEntry(String userName) { Cursor cursor = db.query("NFDB", null, " USERNAME=?", new String[] { userName }, null, null, null); if (cursor.getCount() &lt; 1) // UserName Not Exist { cursor.close(); return "NOT EXIST"; } cursor.moveToFirst(); String password = cursor.getString(cursor.getColumnIndex("PASSWORD")); cursor.close(); return password; } public void updateEntry(String userName, String password) { // Define the updated row content. ContentValues updatedValues = new ContentValues(); // Assign values for each row. updatedValues.put("USERNAME", userName); updatedValues.put("PASSWORD", password); String where = "USERNAME = ?"; db.update("NFDB", updatedValues, where, new String[] { userName }); } public String getData() { String[] columns = new String[] { "ID", "USERNAME" }; Cursor c = db .query("NFDB", columns, null, null, null, null, null, null); String result = ""; int iRow = c.getColumnIndex("ID"); int iName = c.getColumnIndex("USERNAME"); for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { result = result + c.getString(iRow) + " " + c.getString(iName) + "/n"; } return result; } public String getUsername(String searchName) { Cursor c = db.query("NFDB", new String[] { "USERNAME" }, "USERNAME = ?", new String[] { searchName }, null, null, null); if (c.moveToNext()) return c.getString(0); else return ""; } public void InsertScore(String Username, String Score) { ContentValues ScoreValues = new ContentValues(); ScoreValues.put("USERNAME", Username); ScoreValues.put("SCORE", Score); db.insert("NFDB", null, ScoreValues); } public String GetGameScore(String Username, String Score) { Cursor cursor = db.query("NFDB", null, "USERNAME", new String[] { Username, Score }, null, null, null); cursor.moveToFirst(); cursor.close(); return Username; } public String GetAllScore() { String[] columns = new String[] { "ID", "USERNAME", "SCORE" }; Cursor cursor = db.query("NFDB", columns, null, null, null, null, null); String result = ""; int iRow = cursor.getColumnIndex("ID"); int iUsername = cursor.getColumnIndex("USERNAME"); int iScore = cursor.getColumnIndex("SCORE"); for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) { result = result + cursor.getString(iRow) + " " + cursor.getString(iUsername) + " " + cursor.getString(iScore) + "/n"; } return result; } public void InsertNumber(String Number) { ContentValues NumberValues = new ContentValues(); ; NumberValues.put("NUMBERINPUT", Number); db.insert("NFDB", null, NumberValues); } public String GetNumber(String Username, String Number) { Cursor cursor = db.query("NFDB", null, "USERNAME", new String[] { Username, Number }, null, null, null, null); cursor.moveToFirst(); cursor.close(); return Username; } public String GetAllNumbers() { String[] columns = new String[] { "ID", "USERNAME", "NUMBERINPUT" }; Cursor cursor = db.query("NFDB", columns, null, null, null, null, null, null); String result = ""; int iRow = cursor.getColumnIndex("ID"); int iName = cursor.getColumnIndex("USERNAME"); int iNumber = cursor.getColumnIndex("NUMBERINPUT"); for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) { result = result + cursor.getString(iRow) + " " + cursor.getString(iName) + " " + cursor.getString(iNumber) + "/n"; } return result; } public void InsertFriends(String Friends) { ContentValues FriendValues = new ContentValues(); FriendValues.put("FRIENDS", Friends); db.insert("NFDB", null, FriendValues); } public int DeleteFriends(String Friends) { String where = "FRIENDS=?"; int numberOfEntriesDeleted = db.delete("NFDB", where, new String[] { Friends }); return numberOfEntriesDeleted; } public String GetFriend(String Defender) { Cursor cursor = db.query("NFDB", null, "FRIENDS", new String[] { Defender }, null, null, null, null); cursor.moveToFirst(); cursor.close(); return Defender; } public int PlayFriend() { Cursor cursor = db.query("NFDB", null, "FRIENDS", null, null, null, null, null); cursor.moveToFirst(); cursor.close(); return 0; } public Cursor GetAllFriends() { return db.rawQuery("select rowid _id,FRIENDS FROM NFDB", null); } public int get(String string) { // TODO Auto-generated method stub return 0; } public Cursor GetAllPlayers() { return db.rawQuery("select rowid _id,* from NFDB", null); } public Cursor GetAllFriends2() { return db.rawQuery("select rowid _id,FRIENDS FROM NFDB", null); } public Cursor changeCursor(Cursor newcursor) { return newcursor; } } </code></pre>
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    1. USCranosaur
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    1. COdid you check the database for empty/null records ?
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      1. USS.D.
    2. COtry checking your sqlite DB, it might have some null cols.
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      1. USPradeep Pati
    3. CO@User117 if I'm using a raw query to pull this up how would I find this?
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      1. USCranosaur
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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